CN111550810B - Construction method for building lining of household garbage incinerator - Google Patents
Construction method for building lining of household garbage incinerator Download PDFInfo
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- CN111550810B CN111550810B CN202010335413.0A CN202010335413A CN111550810B CN 111550810 B CN111550810 B CN 111550810B CN 202010335413 A CN202010335413 A CN 202010335413A CN 111550810 B CN111550810 B CN 111550810B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/16—Making or repairing linings ; Increasing the durability of linings; Breaking away linings
- F27D1/1621—Making linings by using shaped elements, e.g. bricks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/16—Making or repairing linings ; Increasing the durability of linings; Breaking away linings
- F27D1/1626—Making linings by compacting a refractory mass in the space defined by a backing mould or pattern and the furnace wall
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- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention discloses a construction method for building a furnace lining of a household garbage incinerator, which comprises the following steps: 1) the construction of the sediment fill inside lining that falls, 2) the incineration chamber combustion area, the construction in sediment district that falls, 3) the construction of combustor and exhanst gas outlet side wall, 4) the construction of burning furnace upper furnace wall, 5) the construction of lower part back wall, 6) the construction of rubbish import abrupt slope, 7) the construction of rubbish feed inlet, 8) the construction in rubbish drying district, wherein: the vertical and straight wall surface in the furnace wall of the garbage incinerator adopts a construction method of a setting material, and the wall surface of a special-shaped or arched structure in the furnace wall of the garbage incinerator adopts a construction method of an indefinite material. According to different parts, different masonry materials are adopted, so that the technical requirements of heat preservation, wear resistance and fire resistance are met, the efficiency of furnace wall masonry construction is improved, and the construction quality is ensured.
Description
The technical field is as follows:
the invention relates to a construction method for building a lining of a household garbage incinerator, which is suitable for building a wear-resistant layer, a heat-insulating layer and a heat-insulating layer in the garbage incinerator.
Background art:
along with the improvement of the living standard of people, more and more domestic garbage is generated, and the incineration and deep burying are an effective and feasible treatment method in the aspect of garbage treatment. In order to achieve the purpose of long-term stable operation of the garbage incinerator, a good furnace lining is required to be protected; the refractory masonry materials are various in types, up to 360 tons, 13.4 tons of small welded metal parts and 32 specifications, and necessary construction technical measures are taken for production technical indexes of the wear-resistant refractory materials and working condition use effects of all parts of a boiler by carefully researching a furnace lining structure and combining construction experiences for many years to form a domestic garbage incinerator furnace lining masonry construction method.
The invention content is as follows:
the technical problem to be solved by the invention is as follows: aiming at the optimization of different building methods of all parts of the incinerator, the building construction method of the lining of the household garbage incinerator is provided, different building materials and different construction methods are adopted according to different internal construction parts of the incinerator, the overall strength and the connection performance are improved, and the technical requirements of heat preservation, wear resistance and fire resistance are met.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a construction method for building a furnace lining of a household garbage incinerator is characterized by comprising the following steps: the method comprises the following steps:
A. construction preparation:
1) tools and materials for preparation of construction comprise silicon carbide refractory bricks, corundum mullite wear-resistant refractory castable, silicon carbide wear-resistant refractory plastic, high-alumina hanging bricks, high-alumina refractory castable, aluminum silicate fiber felt, asbestos-free calcium silicate products and light heat-insulating castable;
2) measuring the size, and determining the thermal expansion size and the reserved expansion gap of each part;
B. the method comprises the following specific operation steps:
1) construction of inner lining of slag falling hopper
a. The lining structure is as follows:
front and rear walls: the pouring thickness of the corundum-mullite high-strength wear-resistant castable is 100mm, the pouring thickness of the light-weight castable is 150mm, and the total thickness is 250 mm;
b. welding an anchoring part: adopting Y-shaped flat steel grabbing nails in a cross staggered shape to carry out double-sided full joint, wherein the space between the flat steel grabbing nails is 200 multiplied by 200 mm; after the construction is finished, coating asphalt on the part of the anchoring piece, which needs to be poured with the wear-resistant refractory castable;
c. construction of the heat-insulating castable: pouring with light castable with the thickness of 150mm
d. Supporting an outer template: the template is erected by thick wood plywood, a release agent is coated on the surface of the contact castable before the template is erected, and the erected template is smooth in surface and is kept firm;
e. the construction of the corundum-mullite wear-resistant castable: controlling the stirring temperature of the casting material to be 5-40 ℃, uniformly and compactly tamping, stopping tamping when floating slurry is emitted from the surface of the casting material, and pouring the casting material with the thickness of 100 mm;
f. removing the template: when the strength of the castable meets the requirement, the formwork removal operation can be carried out, the surface and edges of the castable are ensured not to be damaged during formwork removal, and the formwork removal sequence follows the removal sequence of first support and then removal and then first removal;
g. and (5) maintenance: covering the casting material engineering surface with a wet gunny bag or a wet mat, spraying water in time to keep a wet state, spraying water on the casting material surface for oxygen protection by a sprayer for the position inconvenient to cover, maintaining for not less than 2 days, and regularly spraying water for inspection;
2) construction of combustion area and slag falling area of incineration chamber
a. The lining structure is as follows:
the air cooling wall at the lower part of the combustion zone: the building thickness of the refractory brick is 175mm, the thickness of the air interlayer is 60mm, the building thickness of the light heat-insulating brick is 115mm, the building thickness of the high-temperature asbestos-free microporous calcium silicate board is 100mm, and the total thickness of the whole wall is 450 mm;
side walls of the burnout zone and the slag falling zone: the pouring thickness of the corundum-mullite high-strength wear-resistant castable is 200mm, the building thickness of the light heat-insulating brick is 115mm, the building thickness of the aluminum silicate fiber cotton plate is 55mm, and the total thickness of the whole wall is 450 mm;
b. welding an anchoring part: welding lug shaft pull fasteners and wall surface pull hook bricks from a bottom starting pin, and welding Y, V type flat steel gripping nails at a side wall observation hole;
c. the construction key points are as follows:
firstly, carrying out wire drawing and lofting, wherein one end of a wire is fixed by a bottom foot at the lower part of a front arch shoulder of a combustion section of the incinerator, and the other end of the wire is fixed by the outer sides of wear-resistant layers of two side walls of a slag falling port of the incinerator, and carrying out integral straight line drawing; after the stay wire is lofted, brick arrangement is carried out, and a masonry mortar joint gap is reserved in the arrangement process; finally, performing segmentation and point fixing on two side walls of the whole waste incineration area according to the expansion distance, welding reinforcing steel bars on the two side walls firstly during point fixing, and then hanging a vertical line to fix a furnace wall thickness point, namely building a furnace wall surface;
secondly, when the air interlayer is constructed, a refractory brick, a light heat insulation brick and a light heat preservation brick are sequentially built on the fire surface, and the mortar joint is 1 mm; the masonry mortar joint of the calcium silicate board is 3mm, and all masonry should be fully covered with mortar; finally pouring light heat-insulating castable; wherein: the refractory bricks are made of silicon carbide mortar, and the heat-insulating brick building mortar at the air cooling interlayer part is made of refractory brick mortar;
thirdly, casting observation holes in two side walls of the combustion area, performing vertical mold casting when the two side walls are built to the upper part of the casting area of the observation holes, welding a grab nail and an anchoring piece before casting, checking the appearance size of a grinding tool before vertical mold, checking an angle when vertical grinding is fixed, finally casting corundum-mullite high-strength wear-resistant castable, and brushing asphalt on the grab nail cast into the wear-resistant castable;
fourthly, expansion joint: during construction, 3 vertical expansion joints of 30 mm are arranged every 2118 mm in the horizontal direction of the high-temperature section of the combustion zone, 1 expansion joint of 30 mm is vertically arranged in the starting section of 1342 mm, and expansion joints between the two side walls and the top furnace wall are reserved;
3) construction of combustor and flue gas outlet side wall
a. The lining structure is as follows:
firstly, a side wall of a flue gas outlet: the pouring thickness of the corundum-mullite high-strength wear-resistant castable is 200mm, the building thickness of the light heat-insulating brick is 115mm, the laying thickness of the high-temperature asbestos-free microporous calcium silicate plate is 80mm, the laying thickness of the aluminum silicate fiber cotton plate is 55mm, and the thickness of the whole wall is 450 mm;
secondly, an auxiliary burner: adopting corundum plastic material to carry out ramming construction;
b. welding an anchoring part:
firstly, a side wall of a flue gas outlet: adopting a mixed cloth form of the anchoring bricks and the flat steel nails, and alternately welding the Y-shaped nails and the anchoring bricks according to the spacing of 400 x 400 mm during construction;
② a burner: 8Y-shaped grabbing nails are uniformly distributed in the circumferential direction of the inner ring, and 8 anchoring bricks are uniformly distributed in the circumferential direction of the outer ring;
c. the construction key points are as follows:
during construction, the anchoring bricks are fixed before construction, so that the anchoring bricks are prevented from inclining or sliding out of the anchoring brick jacket in the construction process; brushing asphalt on all the nails poured into the wear-resistant layer before pouring;
4) construction of furnace wall of incinerator
a. The lining structure is as follows:
firstly, an upper front wall: the pouring thickness of the corundum-mullite high-strength wear-resistant pouring material is 150mm, the pouring thickness of the light pouring material is 100mm, the building thickness of the high-temperature asbestos-free microporous calcium silicate plate is 100mm, and the thickness of the whole wall is 350 mm;
secondly, a front arch top furnace wall: the pouring thickness of the corundum-mullite high-strength wear-resistant castable is 200mm, and the pouring thickness of the light castable is 150 mm;
③ the lower part of the rear arch: the pouring thickness of the corundum-mullite high-strength wear-resistant pouring material is 180mm, the pouring thickness of the light pouring material is 70mm, and the building thickness of the high-temperature asbestos-free microporous calcium silicate plate is 100 mm;
fourthly, the upper part of the rear arch top: the pouring thickness of the corundum-mullite high-strength wear-resistant castable is 200mm, the pouring thickness of the light castable is 150mm, the building thickness of the high-temperature asbestos-free microporous calcium silicate plate is 100mm, and the thickness of the whole wall is 450 mm;
fifth, upper rear wall: the pouring thickness of the corundum-mullite high-strength wear-resistant pouring material is 200mm, the pouring thickness of the light pouring material is 100mm, the building thickness of the high-temperature asbestos-free microporous calcium silicate plate is 150mm, and the thickness of the whole wall is 450 mm;
b. welding an anchoring part:
firstly, adopting a form of combining an anchoring brick and a flat steel grab nail to pull and fix the lining material;
secondly, during construction, the upper front wall is combined by adopting anchoring bricks and flat steel nails, and the interval is alternately welded by 340 mm and 300 mm; the furnace wall of the front arch top is welded with the flat steel nails alternately at the intervals of 340 mm × 300 mm, the upper part and the lower part of the rear arch top are welded with the flat steel nails alternately at the intervals of 380 mm × 300 mm;
c. the construction key points are as follows:
firstly, when the front arch, the rear arch and the arch shoulders are positioned, the front arch crown and the rear arch crown are partially cast in multiple sections, the horizontal section adopts an inverted vertical mold casting material, an outer steel plate at the top of the horizontal section is reserved before the boiler is installed, and full welding is carried out after the low-temperature furnace baking is finished; before pouring of the inverted vertical mold, whether the top anchoring part is fixed in place is firstly checked, and the pouring adopts a horizontal section template of the inverted vertical mold; reserving a horizontal top and an inclined top corner during construction of the horizontal arch top, grinding the castable at the position, and pouring a light castable after the refractory castable reaches a solidification period;
secondly, when the lining construction of the front arch slope section is carried out, firstly, 150mm of light castable is poured, after the light thermal insulation castable reaches the solidification strength, the vertical mold pouring is carried out, the end face of the anchoring brick is ensured to be attached to the template during the pouring, in addition, the sealing of each layer of template is required to ensure that the section of the castable is vertical to the furnace wall, the thickness of the sealing position is required to reach 2/3 of the thickness of the integral wear-resistant layer, and the pouring thickness of the corundum-mullite high-strength wear-resistant castable is ensured;
the construction method of the front and rear arch shoulders is consistent with the construction method of the front and rear arch shoulders slope section;
fixing the anchoring brick and the jacket when the anchoring brick is installed, brushing asphalt paint on the surface of the metal piece for both the grabbing nail and the air pipe in the pouring wear-resistant castable, and sticking a layer of 2 mm ceramic fiber paper on the surface of the metal piece when the diameter of the pipe is larger than 159 mm; before construction of the front arch furnace wall and the rear arch furnace wall, a layer of ceramic fiber blanket which is 30 mm thick and is compressed to 25 mm thick is paved, so that the width of an expansion joint between the furnace top furnace wall and the two side walls is 25 mm;
5) construction of lower rear wall
a. The lining structure is as follows: sequentially pouring corundum-mullite high-strength wear-resistant castable with the thickness of 200mm, pouring light castable with the thickness of 100mm, and building a high-temperature asbestos-free microporous calcium silicate plate with the thickness of 150mm, wherein the thickness of the whole wall is 450 mm;
b. welding an anchoring part: the anchoring bricks and the flat steel nails are combined for staggered welding, and the spacing is 200 x 400 mm;
c. the construction key points are as follows:
firstly, cutting according to the space between flat steel nails when a calcium silicate board is built, plugging holes by using a light castable after the building is finished, and fully spreading mortar in the building process of the calcium silicate board;
secondly, ramming and compacting the light castable, reserving a heat-insulating layer within a range of 200mm around the hole, finally pouring by using a vertical mold, and blocking to form 5mm expansion gaps;
6) abrupt slope of garbage inlet
a. The lining structure is as follows: sequentially building a high-temperature asbestos-free microporous calcium silicate plate with the thickness of 100mm and a high-strength zirconium-chromium corundum wear-resistant castable with the thickness of 140 mm;
b. welding an anchoring part: welding in the width direction of the Y-shaped flat steel nail grabbing furnace according to the distance of 200 mm;
c. the construction key points are as follows: after a calcium silicate plate is built at the position close to the steel plate, a 10 mm aluminum silicate fiber blanket is laid at the lower opening of the feeding platform and the end of the reverse-pushing fire grate respectively, the wear-resistant castable is poured compactly, and a 2 mm expansion gap is reserved at the position of every 1500 mm;
7) construction of garbage feeding hole
a. The lining structure is as follows:
firstly, a feed inlet front wall: sequentially building corundum-mullite high-strength wear-resistant castable with the thickness of 84mm and a high-temperature asbestos-free microporous calcium silicate plate with the thickness of 50 mm;
secondly, two side walls of a garbage feeding hole: sequentially laying corundum-mullite high-strength wear-resistant castable with the thickness of 100mm and a high-temperature asbestos-free microporous calcium silicate plate with the thickness of 50 mm; constructing and paving a wear-resistant layer at the manhole door with a corundum-mullite high-strength wear-resistant castable material with the thickness of 150 mm;
thirdly, pushing the garbage feeding hole: sequentially building a 150mm corundum-mullite high-strength wear-resistant castable and a 50mm thick high-temperature asbestos-free microporous calcium silicate plate, wherein the total wall thickness is 200 mm;
b. welding an anchoring part: the two side walls and the top are fixed by Y-shaped flat steel nails with the spacing of 200 x 200mm, and a layer of heat-resistant steel plate is welded on the outer part of the front wall refractory material surface;
c. the construction key points are as follows:
the installation sequence of the steel plates of the front wall of the garbage inlet is as follows: firstly, mounting anchoring screws, then constructing a heat-insulating material, mounting a steel plate, and finally pouring a corundum-mullite high-strength wear-resistant castable;
8) construction of garbage drying area
a. The lining structure is as follows:
constructing refractory bricks with the thickness of 175mm on a fire facing surface, constructing an air interlayer with the interval of 60mm, constructing light heat insulation bricks with the thickness of 115mm, and constructing a high-temperature asbestos-free microporous calcium silicate plate with the thickness of 100 mm;
b. welding an anchoring part: the hooks and the hook bricks are welded in a staggered way.
The construction of the furnace wall of the garbage incinerator adopts a construction mode combining a shaping material construction method and an indefinite material construction method, the vertical and straight wall surface in the furnace wall of the garbage incinerator adopts the shaping material construction method, and the wall surface of an arch structure in the furnace wall of the garbage incinerator adopts the indefinite material construction method; the construction steps of the setting material comprise: firstly, welding anchoring parts, constructing a foot brick, constructing a calcium silicate board, constructing a light insulating brick and constructing refractory bricks; the construction steps of the amorphous material comprise: welding anchoring parts, prefabricating anchoring bricks, constructing an aluminum silicate plate, constructing a heat-insulating pouring material, supporting an outer template, constructing a high-strength wear-resistant refractory pouring material, dismantling the template and maintaining.
During construction of the slag hopper lining, the light-weight castable is firstly constructed at the position, then the corundum-mullite high-strength wear-resistant castable is cast in a vertical mold, all the grabbing nails cast into the wear-resistant layer before the vertical mold are coated with asphalt, and an expansion gap of 5mm is reserved.
And the two side walls of the slag falling port and the inner lining at the conical hopper of the slag falling port are distributed in a smooth transition shape during construction.
The refractory bricks are SiC refractory bricks.
The anchoring bricks are distributed in a U-shaped structure, and ports of the anchoring bricks are distributed in an inward contraction shape.
The invention has the following positive beneficial effects:
the invention combines the construction method of the setting material with the construction method of the indefinite material, and the types and the thicknesses of the adopted materials are different according to different areas; the vertical and vertical walls adopt a construction method of a shaped material, and the arch structure adopts a construction method of an unshaped material, so that the garbage incinerator meets the technical requirements of heat preservation, wear resistance and fire resistance, and the integral strength and the connection performance are improved by arranging part of anchoring bricks during construction; the efficiency of bricklaying the construction of brickwork is improved, construction quality has been guaranteed.
Description of the drawings:
fig. 1 is a schematic structural view of an anchoring brick.
The specific implementation mode is as follows:
the invention will be further explained and explained with reference to the drawings, in which:
a construction method for building a furnace lining of a household garbage incinerator is characterized by comprising the following steps: the method comprises the following steps:
A. construction preparation:
1) tools and materials for preparation of construction comprise silicon carbide refractory bricks, corundum mullite wear-resistant refractory castable, silicon carbide wear-resistant refractory plastic, high-alumina hanging bricks, high-alumina refractory castable, aluminum silicate fiber felt, asbestos-free calcium silicate products and light heat-insulating castable;
2) measuring the size, and determining the thermal expansion size and the reserved expansion gap of each part;
B. the method comprises the following specific operation steps:
1) construction of inner lining of slag falling hopper
a. The lining structure is as follows:
front and rear walls: the pouring thickness of the corundum-mullite high-strength wear-resistant castable is 100mm, the pouring thickness of the light-weight castable is 150mm, and the total thickness is 250 mm;
b. welding an anchoring part: adopting Y-shaped flat steel grabbing nails in a cross staggered shape to carry out double-sided full joint, wherein the space between the flat steel grabbing nails is 200 multiplied by 200 mm; before welding the anchoring part, performing spectrum recheck on the material to confirm that the material meets the requirements of equipment technical files and the model meets the design requirements of drawings; the welding distance deviation is controlled within the range of +/-5 mm; the appearance of the welding line has no defects of slag inclusion, undercut, air holes and the like, and the forming is good; after the construction is finished, coating asphalt on the part of the anchoring piece, which needs to be poured with the wear-resistant refractory castable;
c. construction of the heat-insulating castable: pouring by adopting light castable, wherein the thickness is 150 mm; the mixing ratio of the heat-insulating castable meets the requirements of manufacturers, the mixing temperature is controlled to be 5-40 ℃, and direct tamping is strictly forbidden by using machinery during tamping; maintaining for at least 1 day;
d. supporting an outer template: the template is erected by thick wood plywood, a release agent is coated on the surface of the contact castable before the template is erected, and the erected template is smooth in surface and is kept firm;
e. the construction of the corundum-mullite wear-resistant castable: controlling the stirring temperature of the casting material to be 5-40 ℃, uniformly and compactly tamping, stopping tamping when floating slurry is emitted from the surface of the casting material, and pouring the casting material with the thickness of 100 mm;
f. removing the template: when the strength of the castable meets the requirement, the formwork removal operation can be carried out, the surface and edges of the castable are ensured not to be damaged during formwork removal, and the formwork removal sequence follows the removal sequence of first support and then removal and then first removal;
g. and (5) maintenance: covering the casting material engineering surface with a wet gunny bag or a wet mat, spraying water in time to keep a wet state, spraying water on the casting material surface for oxygen protection by a sprayer for the position inconvenient to cover, maintaining for not less than 2 days, and regularly spraying water for inspection;
in the above description, the construction points of the part are: constructing a lightweight castable, then pouring a corundum-mullite high-strength wear-resistant castable in a vertical mold, pouring all the nails in the wear-resistant layer before the mold is erected, and coating asphalt, and reserving an expansion gap of 5 mm; smooth transition is formed when the two side walls of the slag falling port and the inner lining at the conical hopper of the slag falling port are constructed, and the top of the bifurcate port of the conical hopper is poured according to a structural schematic; before the construction of the two side walls of the slag falling port, a fixed area (a casting form of a wear-resistant layer) is marked on the position, the height is from the bottom plate to the top of the incineration chamber, and the horizontal width is from the surface of a fire-resistant layer of the rear wall of the incineration chamber to the brick structure;
2) construction of combustion zone and slag falling zone of incineration chamber
a. The lining structure is as follows:
the air cooling wall at the lower part of the combustion zone: the building thickness of the refractory brick is 175mm, the thickness of the air interlayer is 60mm, the building thickness of the light heat-insulating brick is 115mm, the building thickness of the high-temperature asbestos-free microporous calcium silicate board is 100mm, and the total thickness of the whole wall is 450 mm;
side walls of the burnout zone and the slag falling zone: the pouring thickness of the corundum-mullite high-strength wear-resistant castable is 200mm, the building thickness of the light heat-insulating brick is 115mm, the building thickness of the aluminum silicate fiber cotton plate is 55mm, and the total thickness of the whole wall is 450 mm;
b. welding an anchoring part: welding lug shaft pull fasteners and wall surface pull hook bricks from a bottom starting pin, and welding Y, V type flat steel gripping nails at a side wall observation hole;
c. the construction key points are as follows:
firstly, carrying out wire drawing and lofting, wherein one end of a wire is fixed by a bottom foot at the lower part of a front arch shoulder of a combustion section of the incinerator, and the other end of the wire is fixed by the outer sides of wear-resistant layers of two side walls of a slag falling port of the incinerator, and carrying out integral straight line drawing; after the stay wire is lofted, brick arrangement is carried out, and a masonry mortar joint gap is reserved in the arrangement process; finally, performing segmentation and point fixing on two side walls of the whole waste incineration area according to the expansion distance, welding reinforcing steel bars on the two side walls firstly during point fixing, and then hanging a vertical line to fix a furnace wall thickness point, namely building a furnace wall surface;
secondly, when the air interlayer is constructed, a refractory brick, a light heat insulation brick and a light heat preservation brick are sequentially built on the fire surface, and the mortar joint is 1 mm; the masonry mortar joint of the calcium silicate board is 3mm, and all masonry should be fully covered with mortar; finally pouring light heat-insulating castable; wherein: the refractory bricks are made of silicon carbide mortar, and the heat-insulating brick building mortar at the air cooling interlayer part is made of refractory brick mortar;
thirdly, casting observation holes in two side walls of the combustion area, performing vertical mold casting when the two side walls are built to the upper part of the casting area of the observation holes, welding a grab nail and an anchoring piece before casting, checking the appearance size of a grinding tool before vertical mold, checking an angle when vertical grinding is fixed, finally casting corundum-mullite high-strength wear-resistant castable, and brushing asphalt on the grab nail cast into the wear-resistant castable;
fourthly, expansion joint: during construction, 3 vertical expansion joints of 30 mm are arranged in the horizontal direction of the high-temperature section of the combustion zone every 2118 mm, 1 expansion joint of 30 mm is vertically arranged in the beginning section of 1342 mm, and expansion joints between the two side walls and the top furnace wall are reserved;
3) construction of combustor and flue gas outlet side wall
a. The lining structure is as follows:
firstly, a side wall of a flue gas outlet: the pouring thickness of the corundum-mullite high-strength wear-resistant castable is 200mm, the building thickness of the light heat-insulating brick is 115mm, the laying thickness of the high-temperature asbestos-free microporous calcium silicate plate is 80mm, the laying thickness of the aluminum silicate fiber cotton plate is 55mm, and the thickness of the whole wall is 450 mm;
secondly, an auxiliary burner: adopting corundum plastic material for ramming construction;
b. welding an anchoring part:
firstly, a side wall of a flue gas outlet: adopting a mixed cloth form of the anchoring bricks and the flat steel nails, and alternately welding the Y-shaped nails and the anchoring bricks according to the spacing of 400 x 400 mm during construction;
② a burner: 8Y-shaped grabbing nails are uniformly distributed in the circumferential direction of the inner ring, and 8 anchoring bricks are uniformly distributed in the circumferential direction of the outer ring;
c. the construction key points are as follows:
during construction, the anchoring bricks are fixed before construction, so that the anchoring bricks are prevented from inclining or sliding out of the anchoring brick jacket in the construction process; brushing asphalt on all the nails poured into the wear-resistant layer before pouring;
4) construction of furnace wall of incinerator
a. The lining structure is as follows:
firstly, an upper front wall: the pouring thickness of the corundum-mullite high-strength wear-resistant pouring material is 150mm, the pouring thickness of the light pouring material is 100mm, the building thickness of the high-temperature asbestos-free microporous calcium silicate plate is 100mm, and the thickness of the whole wall is 350 mm;
secondly, a front arch top furnace wall: the pouring thickness of the corundum-mullite high-strength wear-resistant castable is 200mm, and the pouring thickness of the light castable is 150 mm;
③ the lower part of the rear arch: the pouring thickness of the corundum-mullite high-strength wear-resistant pouring material is 180mm, the pouring thickness of the light pouring material is 70mm, and the building thickness of the high-temperature asbestos-free microporous calcium silicate plate is 100 mm;
fourthly, the upper part of the rear arch top: the pouring thickness of the corundum-mullite high-strength wear-resistant castable is 200mm, the pouring thickness of the light castable is 150mm, the building thickness of the high-temperature asbestos-free microporous calcium silicate plate is 100mm, and the thickness of the whole wall is 450 mm;
fifth, upper rear wall: the pouring thickness of the corundum-mullite high-strength wear-resistant pouring material is 200mm, the pouring thickness of the light pouring material is 100mm, the building thickness of the high-temperature asbestos-free microporous calcium silicate plate is 150mm, and the thickness of the whole wall is 450 mm;
b. welding an anchoring part:
firstly, adopting a form of combining an anchoring brick and a flat steel grab nail to fixedly pull the lining material;
secondly, during construction, the upper front wall is combined by adopting anchoring bricks and flat steel nails, and the interval is alternately welded by 340 mm and 300 mm; the furnace wall of the front arch top is welded with the flat steel nails alternately at the intervals of 340 mm × 300 mm, the upper part and the lower part of the rear arch top are welded with the flat steel nails alternately at the intervals of 380 mm × 300 mm;
c. the construction key points are as follows:
firstly, when the front arch, the rear arch and the arch shoulders are positioned, the front arch crown and the rear arch crown are partially cast in multiple sections, the horizontal section adopts an inverted vertical mold casting material, an outer steel plate at the top of the horizontal section is reserved before the boiler is installed, and full welding is carried out after the low-temperature furnace baking is finished; before pouring of the inverted vertical mold, whether the top anchoring part is fixed in place is firstly checked, and the pouring adopts a horizontal section template of the inverted vertical mold; reserving a horizontal top and an inclined top corner during construction of the horizontal arch top, grinding the castable at the position, and pouring a light castable after the refractory castable reaches a solidification period;
secondly, when the lining construction of the front arch slope section is carried out, firstly, 150mm of light castable is poured, after the light thermal insulation castable reaches the solidification strength, the vertical mold pouring is carried out, the end face of the anchoring brick is ensured to be attached to the template during the pouring, in addition, the sealing of each layer of template is required to ensure that the section of the castable is vertical to the furnace wall, the thickness of the sealing position is required to reach 2/3 of the thickness of the integral wear-resistant layer, and the pouring thickness of the corundum-mullite high-strength wear-resistant castable is ensured;
the construction method of the front and rear arch shoulders is consistent with the construction method of the front and rear arch shoulders slope section;
fixing the anchoring brick and the jacket when the anchoring brick is installed, brushing asphalt paint on the surface of the metal piece for both the grabbing nail and the air pipe in the pouring wear-resistant castable, and sticking a layer of 2 mm ceramic fiber paper on the surface of the metal piece when the diameter of the pipe is larger than 159 mm; before construction of the front and rear arch furnace walls, a layer of ceramic fiber blanket with the thickness of 30 mm and the thickness of 25 mm is paved, so that the width of an expansion gap between the furnace top furnace wall and the two side walls is 25 mm;
5) construction of lower rear wall
a. The lining structure is as follows: sequentially pouring corundum-mullite high-strength wear-resistant castable with the thickness of 200mm, pouring light castable with the thickness of 100mm, and building a high-temperature asbestos-free microporous calcium silicate plate with the thickness of 150mm, wherein the thickness of the whole wall is 450 mm;
b. welding an anchoring part: the anchoring bricks and the flat steel nails are combined for staggered welding, and the distance is 200 x 400 mm;
c. the construction key points are as follows:
firstly, cutting according to the space between flat steel nails when a calcium silicate board is built, plugging holes by using a light castable after the building is finished, and fully spreading mortar in the building process of the calcium silicate board;
secondly, ramming and compacting the light castable, reserving a heat-insulating layer within a range of 200mm around the hole, finally pouring by using a vertical mold, and blocking to form 5mm expansion gaps;
6) abrupt slope of garbage inlet
a. The lining structure is as follows: sequentially building a high-temperature asbestos-free microporous calcium silicate plate with the thickness of 100mm and a high-strength zirconium-chromium corundum wear-resistant castable with the thickness of 140 mm;
b. welding an anchoring part: welding according to the distance of 200mm in the width direction of the Y-shaped flat steel nail grabbing furnace;
c. the construction key points are as follows: after a calcium silicate plate is built at the position close to the steel plate, a 10 mm aluminum silicate fiber blanket is laid at the lower opening of the feeding platform and the end of the reverse-pushing fire grate respectively, the wear-resistant castable is poured compactly, and a 2 mm expansion gap is reserved at the position of every 1500 mm;
7) construction of garbage feeding hole
a. The lining structure is as follows:
firstly, a feed inlet front wall: sequentially building a corundum-mullite high-strength wear-resistant castable with the thickness of 84mm and a high-temperature asbestos-free microporous calcium silicate plate with the thickness of 50 mm;
two side walls of a garbage feeding port: sequentially laying corundum-mullite high-strength wear-resistant castable with the thickness of 100mm and a high-temperature asbestos-free microporous calcium silicate plate with the thickness of 50 mm; constructing and paving a wear-resistant layer at the manhole door with a corundum-mullite high-strength wear-resistant castable material with the thickness of 150 mm;
thirdly, pushing the garbage feeding hole: sequentially building a 150mm corundum-mullite high-strength wear-resistant castable and a 50mm thick high-temperature asbestos-free microporous calcium silicate plate, wherein the total wall thickness is 200 mm;
b. welding an anchoring part: the two side walls and the top are fixed by Y-shaped flat steel nails with the spacing of 200 x 200mm, and a layer of heat-resistant steel plate is welded on the outer part of the front wall refractory material surface;
c. the construction key points are as follows:
the installation sequence of the steel plates of the front wall of the garbage inlet is as follows: firstly, mounting anchoring screws, then constructing a heat-insulating material, mounting a steel plate, and finally pouring a corundum-mullite high-strength wear-resistant castable;
8) construction of garbage drying area
c. The lining structure is as follows:
constructing refractory bricks with the thickness of 175mm on a fire facing surface, constructing an air interlayer with the interval of 60mm, constructing light heat insulation bricks with the thickness of 115mm, and constructing a high-temperature asbestos-free microporous calcium silicate plate with the thickness of 100 mm;
d. welding an anchoring part: the hooks and the hook bricks are welded in a staggered way.
In the above description, the construction of the furnace wall of the garbage incinerator adopts a construction mode combining a setting material construction method and an indefinite material construction method, the vertical and straight wall surface in the furnace wall of the garbage incinerator adopts the setting material construction method, and the wall surface of the arch structure in the furnace wall of the garbage incinerator adopts the indefinite material construction method; the construction steps of the setting material comprise: firstly, welding an anchoring part, constructing a foot brick, constructing a calcium silicate board, constructing a light heat-insulating brick, and constructing a refractory brick; the construction steps of the amorphous material comprise: welding anchoring parts, prefabricating anchoring bricks, constructing an aluminum silicate plate, constructing a heat-insulating castable, supporting an outer template, constructing a high-strength wear-resistant refractory castable, dismantling the template, and maintaining.
In the step 1) and the construction of the slag hopper lining, the light castable is constructed at the position, then the corundum-mullite high-strength wear-resistant castable is cast in a vertical mold, all the grab nails in the wear-resistant layer are cast in the vertical mold before the vertical mold, the asphalt is coated, and an expansion gap of 5mm is reserved.
In the step 1), the two side walls of the slag falling port and the inner lining at the conical hopper of the slag falling port are distributed in a smooth transition shape during construction.
In the above description, the refractory bricks are SiC refractory bricks.
The anchoring bricks are distributed in a U-shaped structure, and the ports of the anchoring bricks are distributed in an inward contraction shape, as shown in figure 1.
In the above description, the incinerator masonry material generally adopts a fixed material and an unfixed material, and the main materials include silicon carbide refractory bricks, corundum mullite wear-resistant refractory castable, silicon carbide wear-resistant refractory plastic, high-alumina hanging bricks, high-alumina refractory castable, aluminum silicate fiber felt, asbestos-free calcium silicate product and light heat-insulating castable.
According to the invention, the furnace lining masonry of the incinerator is adjusted and optimized, so that the construction time is shortened on the premise of ensuring the safety and the process, the engineering quality is ensured, and the materials used by the incinerator play a role to the maximum extent; by improving the collocation of the traditional heat-resistant steel bar and the pouring concrete masonry material, adopting the masonry construction combining the shaping of flat steel anchoring pieces, wear-resistant (fire), heat insulation, heat preservation materials and the like and the indefinite materials, and adopting different masonry materials according to different parts, the technical requirements of heat preservation, wear resistance and fire resistance are met, the efficiency of furnace wall masonry construction is improved, and the construction quality is ensured.
Claims (6)
1. A construction method for building a furnace lining of a household garbage incinerator is characterized by comprising the following steps: the method comprises the following steps:
A. construction preparation:
1) tools and materials for preparation of construction comprise silicon carbide refractory bricks, corundum mullite wear-resistant refractory castable, silicon carbide wear-resistant refractory plastic, high-alumina hanging bricks, high-alumina refractory castable, aluminum silicate fiber felt, asbestos-free calcium silicate products and light heat-insulating castable;
2) measuring the size, and determining the thermal expansion size and the reserved expansion gap of each part;
B. the method comprises the following specific operation steps:
1) construction of inner lining of slag falling hopper
a. The lining structure is as follows:
front and rear walls: the pouring thickness of the corundum-mullite high-strength wear-resistant castable is 100mm, the pouring thickness of the light-weight castable is 150mm, and the total thickness is 250 mm;
b. welding an anchoring part: adopting Y-shaped flat steel grabbing nails in a cross staggered shape to carry out double-sided full joint, wherein the space between the flat steel grabbing nails is 200 multiplied by 200 mm; after the construction is finished, coating asphalt on the part of the anchoring piece, which needs to be poured with the wear-resistant refractory castable;
c. construction of the heat-insulating castable: pouring with light castable with the thickness of 150mm
d. Supporting an outer template: the template is erected by adopting thick wood plywood, a release agent is coated on the surface of the contact castable before the template is erected, and the erected template needs to be smooth in surface and kept firm;
e. the construction of the corundum-mullite wear-resistant castable: controlling the stirring temperature of the casting material to be 5-40 ℃, uniformly and compactly tamping, stopping tamping when floating slurry is emitted from the surface of the casting material, and pouring the casting material with the thickness of 100 mm;
f. removing the template: when the strength of the castable meets the requirement, the formwork removal operation can be carried out, the surface and edges of the castable are ensured not to be damaged during formwork removal, and the formwork removal sequence follows the removal sequence of first support and then removal and then first removal;
g. and (5) maintenance: covering the casting material engineering surface with a wet gunny bag or a wet mat, spraying water in time to keep a wet state, spraying water on the casting material surface for oxygen protection by a sprayer for the position inconvenient to cover, maintaining for not less than 2 days, and regularly spraying water for inspection;
2) construction of combustion area and slag falling area of incineration chamber
a. The lining structure is as follows:
the air cooling wall at the lower part of the combustion zone: the building thickness of the refractory brick is 175mm, the thickness of the air interlayer is 60mm, the building thickness of the light heat-insulating brick is 115mm, the building thickness of the high-temperature asbestos-free microporous calcium silicate board is 100mm, and the total thickness of the whole wall is 450 mm;
side walls of the burnout zone and the slag falling zone: the pouring thickness of the corundum-mullite high-strength wear-resistant castable is 200mm, the building thickness of the light heat-insulating brick is 115mm, the building thickness of the aluminum silicate fiber cotton plate is 55mm, and the total thickness of the whole wall is 450 mm;
b. welding an anchoring part: welding lug shaft pulling and fixing pieces and wall surface pulling hook bricks from a bottom starting pin, and welding Y, V type flat steel grab nails at the side wall observation holes;
c. the construction key points are as follows:
firstly, carrying out wire drawing and lofting, wherein one end of a wire is fixed by a bottom foot at the lower part of a front arch shoulder of a combustion section of the incinerator, and the other end of the wire is fixed by the outer sides of wear-resistant layers of two side walls of a slag falling port of the incinerator, and carrying out integral straight line drawing; after the stay wire is lofted, brick arrangement is carried out, and a masonry mortar joint gap is reserved in the arrangement process; finally, performing segmentation and point fixing on two side walls of the whole waste incineration area according to the expansion distance, welding reinforcing steel bars on the two side walls firstly during point fixing, and then hanging a vertical line to fix a furnace wall thickness point, namely building a furnace wall surface;
secondly, when the air interlayer is constructed, a refractory brick, a light heat insulation brick and a light heat preservation brick are sequentially built on the fire surface, and the mortar joint is 1 mm; the masonry mortar joint of the calcium silicate board is 3mm, and all masonry should be fully covered with mortar; finally pouring light heat-insulating castable; wherein: the refractory bricks are made of silicon carbide mortar, and the heat-insulating brick building mortar at the air cooling interlayer part is made of refractory brick mortar;
thirdly, casting observation holes in two side walls of the combustion area, performing vertical mold casting when the two side walls are built to the upper part of the casting area of the observation holes, welding a grab nail and an anchoring piece before casting, checking the appearance size of a grinding tool before vertical mold, checking an angle when vertical grinding is fixed, finally casting corundum-mullite high-strength wear-resistant castable, and brushing asphalt on the grab nail cast into the wear-resistant castable;
fourthly, expansion joint: during construction, 3 vertical expansion joints of 30 mm are arranged every 2118 mm in the horizontal direction of the high-temperature section of the combustion zone, 1 expansion joint of 30 mm is vertically arranged in the starting section of 1342 mm, and expansion joints between the two side walls and the top furnace wall are reserved;
3) construction of burner and side wall of flue gas outlet
a. The lining structure is as follows:
firstly, a side wall of a flue gas outlet: the pouring thickness of the corundum-mullite high-strength wear-resistant castable is 200mm, the building thickness of the light heat-insulating brick is 115mm, the laying thickness of the high-temperature asbestos-free microporous calcium silicate board is 80mm, the laying thickness of the aluminum silicate fiber cotton board is 55mm, and the thickness of the whole wall is 450 mm;
secondly, an auxiliary burner: adopting corundum plastic material to carry out ramming construction;
b. welding an anchoring part:
firstly, a side wall of a flue gas outlet: adopting a mixed cloth form of the anchoring bricks and the flat steel nails, and alternately welding the Y-shaped nails and the anchoring bricks according to the spacing of 400 x 400 mm during construction;
② a burner: 8Y-shaped grabbing nails are uniformly distributed in the circumferential direction of the inner ring, and 8 anchoring bricks are uniformly distributed in the circumferential direction of the outer ring;
c. the construction key points are as follows:
during construction, the anchoring bricks are fixed before construction, so that the anchoring bricks are prevented from inclining or sliding out of the anchoring brick jacket in the construction process; brushing asphalt on all the nails poured into the wear-resistant layer before pouring;
4) construction of furnace wall of incinerator
a. The lining structure is as follows:
firstly, an upper front wall: the pouring thickness of the corundum-mullite high-strength wear-resistant pouring material is 150mm, the pouring thickness of the light pouring material is 100mm, the building thickness of the high-temperature asbestos-free microporous calcium silicate plate is 100mm, and the thickness of the whole wall is 350 mm;
secondly, a front arch top furnace wall: the pouring thickness of the corundum-mullite high-strength wear-resistant castable is 200mm, and the pouring thickness of the light castable is 150 mm;
③ the lower part of the rear arch: the pouring thickness of the corundum-mullite high-strength wear-resistant pouring material is 180mm, the pouring thickness of the light pouring material is 70mm, and the building thickness of the high-temperature asbestos-free microporous calcium silicate plate is 100 mm;
fourthly, the upper part of the rear arch top: the pouring thickness of the corundum-mullite high-strength wear-resistant castable is 200mm, the pouring thickness of the light castable is 150mm, the building thickness of the high-temperature asbestos-free microporous calcium silicate plate is 100mm, and the thickness of the whole wall is 450 mm;
fifth, upper rear wall: the pouring thickness of the corundum-mullite high-strength wear-resistant pouring material is 200mm, the pouring thickness of the light pouring material is 100mm, the building thickness of the high-temperature asbestos-free microporous calcium silicate plate is 150mm, and the thickness of the whole wall is 450 mm;
b. welding an anchoring part:
firstly, adopting a form of combining an anchoring brick and a flat steel grab nail to pull and fix the lining material;
secondly, during construction, the upper front wall is combined by adopting anchoring bricks and flat steel nails, and the interval is alternately welded by 340 mm and 300 mm; the furnace wall of the front arch top is welded with the flat steel nails alternately at the intervals of 340 mm × 300 mm, the upper part and the lower part of the rear arch top are welded with the flat steel nails alternately at the intervals of 380 mm × 300 mm;
c. the construction key points are as follows:
firstly, when the front arch, the rear arch and the arch shoulders are positioned, the front arch crown and the rear arch crown are partially cast in multiple sections, the horizontal section adopts an inverted vertical mold casting material, an outer steel plate at the top of the horizontal section is reserved before the boiler is installed, and full welding is carried out after the low-temperature furnace baking is finished; before pouring of the inverted vertical mold, whether the top anchoring part is fixed in place is firstly checked, and the pouring adopts a horizontal section template of the inverted vertical mold; reserving a horizontal top and an inclined top corner during construction of the horizontal arch top, grinding a castable at the position, and pouring a light castable after the refractory castable reaches a solidification period;
secondly, when the lining construction of the front arch slope section is carried out, firstly, 150mm of light castable is poured, after the light thermal insulation castable reaches the solidification strength, the vertical mold pouring is carried out, the end face of the anchoring brick is ensured to be attached to the template during the pouring, in addition, the sealing of each layer of template is required to ensure that the section of the castable is vertical to the furnace wall, the thickness of the sealing position is required to reach 2/3 of the thickness of the integral wear-resistant layer, and the pouring thickness of the corundum-mullite high-strength wear-resistant castable is ensured;
the construction method of the front and rear arch shoulders is consistent with the construction method of the front and rear arch shoulders slope section;
fixing the anchoring brick and the jacket when the anchoring brick is installed, brushing asphalt paint on the surface of the metal piece for both the grabbing nail and the air pipe in the pouring wear-resistant castable, and sticking a layer of 2 mm ceramic fiber paper on the surface of the metal piece when the diameter of the pipe is larger than 159 mm; before construction of the front and rear arch furnace walls, a layer of ceramic fiber blanket with the thickness of 30 mm and the thickness of 25 mm is paved, so that the width of an expansion gap between the furnace top furnace wall and the two side walls is 25 mm;
5) construction of lower rear wall
a. The lining structure is as follows: sequentially pouring corundum-mullite high-strength wear-resistant castable with the thickness of 200mm, pouring light castable with the thickness of 100mm, and building a high-temperature asbestos-free microporous calcium silicate plate with the thickness of 150mm, wherein the thickness of the whole wall is 450 mm;
b. welding an anchoring part: the anchoring bricks and the flat steel nails are combined for staggered welding, and the spacing is 200 x 400 mm;
c. the construction key points are as follows:
firstly, cutting according to the space between flat steel nails when a calcium silicate board is built, plugging holes by using a light castable after the building is finished, and fully spreading mortar in the building process of the calcium silicate board;
secondly, ramming and compacting the light castable, reserving a heat-insulating layer within a range of 200mm around the hole, finally pouring by using a vertical mold, and blocking to form 5mm expansion gaps;
6) construction of garbage inlet steep slope
a. The lining structure is as follows: sequentially building a high-temperature asbestos-free microporous calcium silicate plate with the thickness of 100mm and a high-strength zirconium-chromium corundum wear-resistant castable with the thickness of 140 mm;
b. welding an anchoring part: welding according to the distance of 200mm in the width direction of the Y-shaped flat steel nail grabbing furnace;
c. the construction key points are as follows: after a calcium silicate plate is built at the position close to the steel plate, a 10 mm aluminum silicate fiber blanket is laid at the lower opening of the feeding platform and the end of the reverse-pushing fire grate respectively, the wear-resistant castable is poured compactly, and a 2 mm expansion gap is reserved at the position of every 1500 mm;
7) construction of garbage feed inlet
a. The lining structure is as follows:
firstly, a feed inlet front wall: sequentially building corundum-mullite high-strength wear-resistant castable with the thickness of 84mm and a high-temperature asbestos-free microporous calcium silicate plate with the thickness of 50 mm;
secondly, two side walls of a garbage feeding hole: sequentially laying corundum-mullite high-strength wear-resistant castable with the thickness of 100mm and a high-temperature asbestos-free microporous calcium silicate plate with the thickness of 50 mm; constructing and paving a wear-resistant layer at the manhole door with a corundum-mullite high-strength wear-resistant castable material with the thickness of 150 mm;
thirdly, pushing the garbage feeding hole: sequentially building a 150mm corundum-mullite high-strength wear-resistant castable and a 50mm thick high-temperature asbestos-free microporous calcium silicate plate, wherein the total wall thickness is 200 mm;
b. welding an anchoring part: the two side walls and the top are fixed by Y-shaped flat steel nails with the spacing of 200 x 200mm, and a layer of heat-resistant steel plate is welded on the outer part of the front wall refractory material surface;
c. the construction key points are as follows:
the installation sequence of the steel plates of the front wall of the garbage inlet is as follows: firstly, mounting an anchoring screw, then constructing a heat insulation material, then mounting a steel plate, and finally pouring a corundum-mullite high-strength wear-resistant castable;
8) construction of garbage drying area
The lining structure is as follows:
constructing refractory bricks with the thickness of 175mm on a fire facing surface, constructing an air interlayer with the interval of 60mm, constructing light heat insulation bricks with the thickness of 115mm, and constructing a high-temperature asbestos-free microporous calcium silicate plate with the thickness of 100 mm;
welding an anchoring part: the hooks and the hook bricks are welded in a staggered way.
2. The lining construction method of a household garbage incinerator according to claim 1, characterized in that: the construction of the furnace wall of the garbage incinerator adopts a construction mode combining a shaping material construction method and an indefinite material construction method, the vertical and straight wall surface in the furnace wall of the garbage incinerator adopts the shaping material construction method, and the wall surface of an arch structure in the furnace wall of the garbage incinerator adopts the indefinite material construction method; the construction steps of the setting material comprise: firstly, welding anchoring parts, constructing a foot brick, constructing a calcium silicate board, constructing a light insulating brick and constructing refractory bricks; the construction steps of the amorphous material comprise: welding anchoring parts, prefabricating anchoring bricks, constructing an aluminum silicate plate, constructing a heat-insulating castable, supporting an outer template, constructing a high-strength wear-resistant refractory castable, dismantling the template, and maintaining.
3. The lining construction method of a household garbage incinerator according to claim 1, characterized in that: in the construction of the slag hopper lining, the light castable is firstly constructed at the position, then the corundum-mullite high-strength wear-resistant castable is cast in a vertical mold, all the grab nails in the wear-resistant layer are cast in the front of the vertical mold and coated with asphalt, and an expansion gap of 5mm is reserved.
4. The lining construction method of a household garbage incinerator according to claim 1, characterized in that: and the two side walls of the slag falling port and the inner lining at the conical hopper of the slag falling port are distributed in a smooth transition shape during construction.
5. The lining construction method of a household garbage incinerator according to claim 1, characterized in that: the refractory bricks are SiC refractory bricks.
6. The lining construction method of a household garbage incinerator according to claim 1, characterized in that: the anchoring bricks are distributed in a U-shaped structure, and ports of the anchoring bricks are distributed in an inward contraction shape.
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| CN115899711A (en) * | 2021-09-30 | 2023-04-04 | 华润水泥技术研发（广西）有限公司 | A refractory feeding chamber based on a rotary furnace and its refractory process |
| CN120115944B (en) * | 2025-05-08 | 2025-07-18 | 山东瀛洲节能环保科技有限公司 | A refractory material maintenance construction process for expansion joints of waste incinerators |
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| KR100773574B1 (en) * | 2001-10-17 | 2007-11-05 | 구로사키 하리마 코포레이션 | Construction method of amorphous refractory and irregular refractory used in the same |
| CN102719592A (en) * | 2011-03-30 | 2012-10-10 | 鞍钢股份有限公司 | Large-scale converter lining masonry method |
| CN203657444U (en) * | 2013-12-27 | 2014-06-18 | 中冶长天国际工程有限责任公司 | Prefabricated brick for rotary kiln and kiln liner of rotary kiln |
| CN104019314A (en) * | 2014-06-12 | 2014-09-03 | 鞍钢股份有限公司 | Construction method for lining of high-temperature expansion joint of dry quenching furnace |
| CN106370010B (en) * | 2016-08-31 | 2018-11-02 | 安徽芜湖海螺建筑安装工程有限责任公司 | A kind of lining structure embodiment of new type water stall kilneye |
| CN106811236B (en) * | 2017-01-24 | 2022-11-25 | 新奥科技发展有限公司 | A fluidized bed gasifier and its construction method |
| CN111043606A (en) * | 2019-12-30 | 2020-04-21 | 青岛首鑫冶金辅料科技有限公司 | Furnace building method for hazardous waste treatment rotary kiln |
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