JP3103778B2 - Wax-like material production equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for producing a wax-like substance used for pigments, casting and the like.

[0002]

2. Description of the Related Art Conventionally, as an apparatus for producing a wax-like substance as described above, for example, as described in JP-A-5-84742, a synthetic resin waste such as a polyethylene resin is treated as a raw material. Devices for producing waxy substances useful for fuels, pigments or castings are known.

[0003] In such a manufacturing apparatus, as shown in FIG.
1a, a cylindrical combustion basket 22 is integrally mounted and fixed to the upper end opening of the storage tank 21.

[0004] In the lower part of the combustion basket 22, a roster 23 serving as a raw material receiving tray is formed in an upwardly convex disk shape so as to suppress uneven distribution of the raw material.
A large number of holes 23a are drilled in the roaster 23, and a number of air introduction holes 22a are drilled in the side wall of the combustion basket 22.

A closed box-shaped catalyst tank 24 filled with a linear metal catalyst for promoting deplasticization is provided in the lower end opening 22b of the combustion basket 22 with the lower end opening 22b. It is attached so as to close it, and the outer wall of the catalyst tank 24 has a mesh shape.

A cylindrical air balancer 25 for adjusting air supplied to the combustion basket 22 is provided at a predetermined interval on the outer periphery of the combustion basket 22, and an air introduction opening is provided at a lower portion of the air balancer 25. A portion 25a is provided.

A heater 26 and a temperature sensor 27 are provided in the storage tank 21 so as to control the temperature of the wax-like substance 30. The heater 26
Is provided so as to stabilize the generation of the hot gas 31 generated in the storage tank 21.

[0008] By stabilizing the temperature of the wax-like substance 30, the combustion temperature in the combustion basket 22 can be stabilized.
In the combustion basket 22, the carbon generated in 1 can be stably burned more and reduced.

Next, a method of manufacturing the wax-like substance 30 using the above-described manufacturing apparatus will be described.
As the raw material 32, a mixture of a combustible, for example, highly crosslinked polyethylene and a non-crosslinked, low crosslinked and highly crosslinked polyolefin such as polyethylene or a synthetic resin such as polystyrene for producing a wax-like substance is used. Into the basket 22 for use.

Thereafter, the highly crosslinked polyethylene in the raw material 32 is ignited and burned to melt the synthetic resin for producing a wax-like substance, and the melt 33 is dripped from the rostrole hole 23a. It passes between the catalysts in the tank 24 and accumulates in the receiving tank 21.

At this time, the oxygen in the catalyst tank 24 and the storage tank 21 is quickly consumed by the combustion in the combustion basket 22, and the inside of them is in an oxygen-deficient state. Is deplasticized in an oxygen-deficient state to become a wax-like substance 30 and stored in the receiving tank 21.

The wax-like substance 30 which has been melted to a high heat state as described above is partially vaporized by heat in an oxygen-deficient state to generate a flammable high-heat gas 31 which rises. In the combustion basket 22 as a place for burning the raw material 32, the air balancer 25
, And is mixed with air introduced from the air introduction hole 22a and burned, so that heat energy is supplied to the combustion basket 22 and the catalyst tank 24 autonomously.

[0013]

However, in the above-described conventional structure, the raw material 32 may be unevenly distributed on the rostrum 23, and the uneven distribution of the raw material 32 may cause uneven heating of the raw material 32. And Rostor 2
3 may cause clogging of the rostral hole 23a, causing a problem that the efficiency of melting and deplasticizing the raw material 32 may be reduced due to uneven heating and clogging.

[0014]

In order to solve the above-mentioned problems, a wax-like substance producing apparatus according to the present invention has a tank for receiving a melt of a wax-like substance having an upper end opening. Provided, the upper and lower ends are open, and a combustion basket for heating and melting the raw material is attached to the upper end opening,
A large number of air introduction holes are provided on the peripheral wall of the combustion basket to burn combustible gas from the tank, and a deplasticization promoting basket that opens at the upper end with respect to the lower opening of the combustion basket, A porous raw material tray, in which the peripheral wall is porous, and which is disposed inside the tank, and on which the raw material is placed, is provided laterally on the inner peripheral wall of the combustion basket, and is formed in the tank. A communication pipe for delivering flammable gas into the combustion basket is provided, and the raw material trays are separated from each other along the vertical direction.
A disc-shaped upper saucer that is displaced in multiple stages
And an annular lower part whose inner diameter is smaller than the outer diameter of the upper material pan
It is characterized in that it has a raw material tray and a coaxial shape .

According to the above configuration, the raw material tray is vertically moved.
The upper raw material in the form of a disk is displaced
A circular pan with an inner diameter smaller than the outer diameter of the upper pan
By having the lower raw material pan coaxially,
Adjust the position of the ingredients on the ingredient pan up and down in the combustion basket.
The material is divided and placed at multiple positions in the
And combustible gas into the above-mentioned combustion basket
Can be introduced between the upper and lower material trays.
Wear.

[0016] Thus, in the above configuration, the bias of the raw material
Due to clogging of raw materials in porous raw material trays
The temperature in the combustion basket is unstable due to the unstable gas introduction.
It is possible to reduce unevenness of control and poor control.
From the above, the heating of the raw material can be made more uniform,
Melting and desorption of the above materials by heat in a combustion basket
It is possible to improve the efficiency of plasticization.

[0017] Incidentally, according to the above configuration, the combustion basket provided at the top opening of the tank, since it is possible to make the tank with the oxygen deficiency by the combustion of the gas in the basket the combustion The combustible gas volatilized from the melt of the wax-like substance in the tank is introduced into the combustion basket while avoiding combustion in the tank, and is introduced through a number of air introduction holes in the peripheral wall of the combustion basket. The gas can be burned using the introduced oxygen, and the raw material can be melted by heating by combustion, depolymerized by partial depolymerization, and deplasticized.

Further, by the combustion of such a gas, the raw material is melted on the raw material receiving tray, and passes through the deplasticization promoting basket which is provided in the tank and is also in an oxygen-deficient state. At this time, the formation of a melt of the deplasticized waxy substance is further promoted, and the melt accumulates in the tank.

In addition, in the above configuration, the communication pipe is provided for sending the combustible gas generated in the tank into the combustion basket, so that the combustible gas is stored in the combustion basket. On the other hand, it can be introduced more reliably.

From these facts, in the above configuration, the combustion in the combustion basket can be ensured by stabilizing the introduction of the combustible gas from the tank to the combustion basket. In this case, it is possible to reduce uneven temperature distribution and uneven control in the combustion basket due to uneven distribution of the raw material and clogging of the raw material in the porous raw material tray.

From the above, in the above configuration, the heating of the raw material can be performed more uniformly, and the efficiency of melting and deplasticizing the raw material by heat in the combustion basket can be improved. .

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

In the apparatus for producing a wax-like substance, as shown in FIG. 1, a bottomed cylindrical storage tank 1 for storing a wax-like substance melt has a tank upper end opening 1b, and , Supported by the support leg 1a.

The upper end opening 1 of the storage tank 1
For example, a vertically burning cylindrical combustion basket 2 that generates a melt B obtained by melting and deplasticizing a raw material A such as a thermoplastic resin by heating is integrally mounted on and fixed to b. ing. The above-mentioned deplasticization means that the raw material A is partially depolymerized by, for example, heat to lose the thermoplasticity of the raw material A.

On the side wall of the combustion basket 2, a large number of air introduction holes 2 for burning the inside of the combustion basket 2 by burning the combustible high-temperature gas G based on the raw material A.
b are formed in the thickness direction of the side wall so as to communicate between the inside and the outside of the combustion basket 2.

The lower end opening 2 of the combustion basket 2
A closed box-shaped catalyst tank (basic basket for promoting deplasticization) 4 is attached to a so as to close the lower end opening 2a from below. The catalyst tank 4 has a mesh-like portion 4a which is porous on the entire wall, and a metal catalyst for promoting deplasticization of the melt B, such as a linear catalyst made of platinum or copper, is provided in the catalyst tank 4. The catalyst 4b is packed and provided so as to pass through the melt B.

A cylindrical air balancer 5 for adjusting the amount of air supplied to the combustion basket 2 is provided at a predetermined distance from the outer periphery of the combustion basket 2 so as to cover the outer periphery of the combustion basket 2. ing. At the lower part of the air balancer 5, an air introduction opening 5a is provided. Also, the upper end opening 2 of the combustion basket 2
Above c and above the upper end of the air balancer 5 are open to the outside air.

Between the storage tank 1 and the combustion basket 2, the highly combustible hot gas G generated in the storage tank 1 is efficiently delivered into the combustion basket 2. A plurality of communication pipes 9 are provided along the vertical direction with respect to the outer wall of the storage tank 1. Each communication pipe 9
Are provided with pumps 10 for sending out the gas from the storage tank 1 to the basket 2 for combustion in order to promote the delivery of the hot gas G.

At the inner bottom of the storage tank 1, a pipe-shaped heater 6 as heating means for increasing the melting temperature of the wax-like substance C by electric heating is installed. Further, a temperature sensor 7 such as a bimetal or a thermocouple for detecting the melting temperature of the wax-like substance C is provided inside the receiving tank 1 as temperature detecting means.

A controller 8 as a control means such as a microcomputer for controlling the heater 6 on / off or proportionally controls a melt of the wax-like substance C based on a signal from the temperature sensor 7. It is provided so as to maintain a predetermined temperature.

Such a heater 6 is provided in the receiving tank 1.
It is attached to the inner bottom portion 1c, and its shape is not shown, but is divided into three along the circumferential direction of the inner bottom portion 1c while meandering so that the wax-like substance C can be evenly heated. In order to prevent the heater 6 from dropping, a heat-resistant cement (not shown) which covers and hardens the outer wall of the heater 6 is provided.

The shape of the heater 6 is not particularly limited to the above-mentioned shape as long as the wax-like substance C can be uniformly heated, and may be another shape, for example, a spiral shape. Also, the mounting position of the heater 6 is
If the wax-like substance C can be heated, it may be provided on the inner side wall of the storage tank 1. Furthermore, it is also possible to configure the heater 6 using high-frequency heating instead of electric heating as a heating method.

In the lower part of the above-mentioned combustion basket 2, a roaster (raw material tray) 3 for placing and melting and deplasticizing the raw material A is provided at a lower end opening 2 a of the combustion basket 2. So as to cover the combustion basket 2 from above.
Inside, along the vertical direction in the combustion basket 2,
It is installed so as to be multi-stage, for example, two-stage, displaced from each other.

Therefore, as shown in FIGS. 2 to 5, for example, such a roster 3 has a disk-shaped upper rostror 3b having a diameter smaller than the inner diameter of the combustion basket 2 and an inner wall of the combustion basket 2, And an annular lower roster 3c having an outer diameter capable of loosely fitting in the direction. In addition, the inner diameter of the lower roostru 3c is set to be slightly smaller than the outer diameter of the upper roostru 3b. The upper end 3b and the lower end 3c make it possible to cover the lower end opening 2a of the combustion basket 2 from above.

A substantially U-shaped hook 3d made of stainless steel for facilitating attachment / detachment is provided at the center of the upper surface of the upper rostrum 3b. In addition, upper Rostor 3
In b, a disk-shaped upper mounting plate 3e on which the raw material A is mounted is provided so as to have a large number of rostral holes 3a communicating with each other in the thickness direction.

The upper mounting plate 3e is formed of, for example, a stainless steel punching plate having the same outer diameter as that of the upper roster 3b. It has a hole 3a.

Further, a frusto-conical ring portion 3f for stabilizing the mounting position of the upper rostral 3b is provided at the center of the lower surface of the upper rostral 3b so that the diameter increases as the distance from the upper rostral 3b increases. , And is mounted so as to be coaxial with the vertical axis of the upper rostror 3b. The ring portion 3f
It is formed from the punching board, and has a ring hole (not shown) similar to the roast hole 3a.

In addition, the upper leg 3b is provided with an upper leg 3g for displacing the upper rod 3b upward with respect to the lower rod 3c so as to extend downward from the periphery of the lower surface of the upper rod 3b. It is provided in.

On the other hand, on the upper surface of the lower roaster 3c, the ring portion 3f of the upper roster 3b is moved in order to maintain the upper roster 3b substantially coaxially with the lower roaster 3c by restricting the movement thereof. A restricting guide portion 3h is formed from a plurality of pipes projecting upward in a mountain shape, and is provided so as to face the inner surface of the ring portion 3f.

Therefore, the guide portion 3h passes the tip of the guide portion 3h along the up-down axis of the lower roaster 3c and fits loosely with the inner surface of the ring portion 3f.
The base end of h is formed to face the radially inner portion of the upper rostral 3b in the upper leg 3g so as to be loosely fitted.

Further, in the lower roster 3c, a lower mounting plate 3i made of the ring-shaped punching board is provided so as to be coaxial with each of the roster holes 3a. In addition, a ring-shaped guide portion 3k as a guide that faces the outside of the upper leg portion 3g and regulates the radial movement of the upper leg portion 3g is provided on the lower mounting plate 3.
i is provided along the periphery.

Further, a plurality of lower leg portions 3j are provided on the lower roast 3c so as to close the lower end opening 2a of the combustion basket 2 from above and to be seated sideways on the peripheral wall in the combustion basket 2. , Is provided on the lower surface of the lower roaster 3c so as to extend downward from the inner peripheral portion of the lower mounting plate 3i.

Next, a method for producing a wax-like substance using the above-described production apparatus will be described.
As shown in Table 1, as raw material A, a mixture of flammable, for example, highly cross-linked polyethylene and polyolefin or polystyrene such as non-cross-linked, low-cross-linked and highly cross-linked polyethylene for producing a wax-like substance is used. It is put into the basket for combustion 2 and is placed on the upper roastles 3b and the lower roastles 3c, respectively.

Thereafter, the highly crosslinked polyethylene in the raw material A is ignited and burned, thereby melting the synthetic resin for producing the waxy substance, and deplasticizing a part of the synthetic resin to reduce the molecular weight. A melt B, which is a mixture thereof, is dropped from each roast hole 3a, and the linear catalyst 4b of the catalyst tank 4 is dropped.
By passing through the gap, it is further deplasticized and changed into a wax-like substance C. The wax-like substance C falls and accumulates in the receiving tank 1.

That is, the catalyst tank 4 and the receiving tank 1
The oxygen inside reacts with the melt B and is quickly consumed, and the inside of them becomes oxygen-deficient. As a result, those that have not been deplasticized (depolymerized) or have insufficient deplasticization in the melt B are mainly deplasticized by the linear catalyst 4b in the catalyst tank 4 in an oxygen-deficient state. , Becomes low molecular weight and becomes a melt of the wax-like substance C, and the wax-like substance C
Is stored in the receiving tank 1 in a molten state. In addition,
The softening point which is the physical property of the waxy substance C taken out is 1
00-118 ° C.

The melting temperature of the wax-like substance C in the molten state becomes a predetermined temperature by heating / disconnection by the heater 6 controlled by the temperature sensor 7 and the controller 8. It is set as follows. Therefore, since the wax-like substance C in the above-described oxygen-deficient state has a stable melting temperature, the high-heat gas G such as a flammable ethylene gas in which a part of the wax-like substance C is vaporized is stably provided. Generated.

Thus, the high-heat gas G whose generation is controlled in this way rises through the catalyst tank 4 and the roastle 3,
Further, the raw material A reaches the combustion basket 2 as a combustion place of the raw material A via the communication pipes 9 and the pumps 10, and is mixed with air introduced from the air introduction holes 2 b. Thereby, the temperature in the combustion basket 2 is controlled to a desired temperature even when the outside air temperature changes, and the melting and deplasticization of the raw material A continuously charged into the combustion basket 2 are automatically stabilized. Is maintained.

At this time, particulate carbon may be generated simultaneously with the high-temperature gas G from the oxygen-deficient wax-like substance C, and such fine-particle carbon is removed from the storage tank 1 together with the high-temperature gas G. When the combustion basket 2 reaches the combustion basket 2, the air is sufficiently introduced from the large number of air introduction holes 2 b and the upper end opening 2 c of the combustion basket 2, and the combustion basket 2 has a desired high temperature. The above-mentioned particulate carbon is completely burned to be carbon dioxide gas.

The internal temperature of the combustion basket 2 is preferably about 1100 ° C. If the temperature is much lower than this, the generation of carbon soot is undesirably large.
Degradation proceeds, which is not preferable.

In order to prevent the generation of carbon soot due to poor combustion in the combustion basket 2 from the particulate carbon thus generated, the internal temperature of the combustion basket 2 is increased to a desired internal temperature. The melting temperature of the wax-like substance C is controlled so that the amount of the hot gas G generated is optimized.

In the above embodiment, the temperature of the waxy substance C in a molten state is controlled to be, for example, about 600 ° C. By controlling in this manner, the generated fine carbon particles are converted into the combustion basket 2.
The carbon dioxide can be completely burned inside to prevent carbon dioxide from being discharged to the outside, and the exhaust can be made clean.

By the way, in the conventional method using a single-stage rostor, uneven distribution and clogging of the raw material on the rostor occurs, the distribution of the combustion temperature in the combustion basket 2 becomes uneven, and the melting of the raw material -Deplasticization efficiency was sometimes reduced.

However, in the above configuration, the Rostor 3
Is provided so as to have a step that is displaced from each other in multiple stages in the vertical direction, for example, two stages, so that the uneven distribution of the raw material A on the roaster 3 and clogging due to a mixture with the raw material A and the melt B can be avoided. The distribution of the combustion temperature can be made more uniform, and the efficiency of melting and deplasticizing the raw material A can be improved.

For example, when the throughput of the raw material is compared between the conventional manufacturing apparatus of the same scale and the manufacturing apparatus of the present invention, the conventional manufacturing apparatus has a capacity of 0.5 t to 0.7 t / da.
y, but in the manufacturing apparatus of the present invention, 1.2t to
Clearly, the efficiency of melting and deplasticizing the raw material A was improved, and the throughput of the raw material A could be increased.

Further, in the manufacturing apparatus of the present invention, it was found that the wax-like substance C obtained by using the above-mentioned manufacturing apparatus had excellent physical properties, particularly as a wax for precision casting.

First, the results of an example of the composition of the obtained wax-like substance C, which were measured by elemental analysis, are as follows, and it was found that the above-mentioned wax-like substance C is substantially composed of only carbon and hydrogen. Was.

Elemental Analysis Results (1) Carbon [C] (wt%) 84.5 (2) Hydrogen [H] (wt%) 14.3 (3) Nitrogen [N] (wt%) 0.2 (4) ) Sulfur [S] (wt%) Less than 0.02 (5) Total chromium [T-CR] (μg / g) Detection limit (10 μg / g) or less (6) Cadmium [Cd] (μg / g) Detection limit (2) g / g or less (7) Lead [Pb] (g / g) detection limit (5 g / g) or less Each of the above-described elemental analysis methods is described in (1), (2), and (3) above. Is a C, H, N meter, and (4) is a turbidity method after combustion (JIS K 25
For 41), (5), (6) and (7) used the atomic absorption method, respectively.

Next, regarding the physical properties of the wax-like substance C, and for comparison, the conventional wax-like substance and each commercially available wax were produced by a conventional production apparatus using a single-stage Rostor. Table 1 shows the physical properties.

[0059]

[Table 1]

In the above physical properties, the viscosity is based on the Brookfield method, the softening point is the method described in JIS K-2207, the penetration is the method described in ASTM D 1321, and the oil content is the one described in JIS K-2235. Each method was measured.

Next, as another physical property of the wax-like substance C, a molding shrinkage test was performed. As a result, the result was 2.5%. On the other hand, the result of a molding shrinkage ratio test for a casting wax manufactured by Ferris Corporation in the United States was 2.2%.

When the wax-like substance C of the present invention is compared with a casting wax manufactured by Ferris Corporation of the United States, both of the above-mentioned molding shrinkage ratios are on the order of 2%, which impairs the practicality of casting molding accuracy. Although it has no molding shrinkage, the wax-like substance C is superior in mold releasability since it has a larger molding shrinkage than that manufactured by Ferris, USA.

The test method of the molding shrinkage rate test is as follows: a sample melted by heating is poured into a silicone rubber mold, the wax is taken out after cooling, the length is measured, and the shrinkage rate of the sample is obtained by the following calculation. This is a method for measuring the precision of the sample and the releasability of the prototype at the time of producing the prototype.

As the above test method, molding shrinkage (%) = 100-L, L: length of sample after cooling (mm), silicone rubber mold: 100 × 10 × 4 tmm, test room temperature: 23 ° C. Each was used.

Further, as another physical property of the wax-like substance C, a luter cling test (JIS K-5)
400, 8.4), the result was 2.7 mg. On the other hand, the result of the luter clinging test for the casting wax manufactured by the US Ferris Company was 13.9 m.
g.

When the wax-like substance C of the present application is compared with a casting wax manufactured by Ferris Corporation of the United States, in the luter cling test, the wax-like substance C shows that the wax-like substance C has a higher amount than the US ferris. It is clear that the wax-like substance C of the present invention is excellent in workability for producing a wax model such as a casting mold, since it is clearly smaller than that of the company.

From the above results, the wax-like substance C of the present application was
Is based on the luter cling test.
It turns out that it is 2-10 mg, more preferably 2.1-7 mg, and more preferably 2.2-5 mg. If the amount is less than 2 mg, it is difficult to produce a wax-like substance, and the wax-like substance has low toughness and is brittle, resulting in poor workability during molding.
If the amount exceeds g, the hardness is low and the workability is also poor.

The test method of the luter binding test is as follows. The luter is attached to a pencil scratching tester specified in JIS K-5400, 8.4, the sample is shaved by the luter, and the sample adhered to the rotary blade of the luter Is measured, and the quality of the workability of the sample is measured based on the amount of the sample attached.

The test method described above was as follows: test piece dimensions: 50 × 50 × 6 tmm, mounting angle: 4
5 °, moving distance: 30 mm, rotation speed: 2 × 10 ⁴ rpm, rotating blade: 1 mmφ, time: 12 sec, test room temperature:
23 ° C. was used.

As shown in Table 1 above, the wax-like substance C of the present invention has a viscosity at 140 ° C. of 500 to 200.
Since it is small, for example, within the range of 0 cps, the prototype can be easily removed from the mold material produced using the prototype of the wax-like substance C by melting.

The softening point of the wax-like substance C thus obtained is relatively high at 100 to 118 ° C. and 25 ° C.
Has a sufficient hardness of 1 dmm, that is, 0.1 mm or less, furthermore, the result of the molding shrinkage test is as small as 2.5%, and the result of the luter cling test is 2. 7 mg, which is extremely small as compared with the product made by Ferris, USA.

From the above, it can be seen that, during the working of a prototype by engraving or the like from a block of wax-like substance C, the block has a large shape-retaining force and easily softens even at room temperature, which is the working environment. In addition, since the block is not broken or deformed at the time of processing, the block can be easily engraved and carved by an amateur using a processing tool such as a chisel or an electric grinder.

Therefore, the wax-like substance C of the present application is:
Since it can be used as a casting wax that is easy to handle even for amateurs, it can be suitably used for lost wax casting and casting of arts and crafts having complicated shapes.

In particular, when the wax-like substance C is used as a raw material of a prototype when, for example, a pipe-shaped casting workpiece having a complicated shape to which pressure is applied is produced by casting,
Due to the above-mentioned excellent physical properties, the above cast workpiece can be integrally manufactured, so that compared to a conventional workpiece manufactured by welding or the like, the conventional joint can be prevented from deteriorating in strength. It can be suitably used as a raw material of a prototype for a cast workpiece as an industrial part to which pressure is applied.

Further, such a wax-like substance C can be used for various uses possessed by paraffin wax, for example, a compounding agent,
It can also be effectively used for fillers, extenders, abrasives, waxes for pigments, and the like.

In addition, since the wax-like substance C is produced from synthetic resin waste such as polyethylene resin,
The cost is low. Therefore, it is possible to reduce the cost of, for example, a cast workpiece manufactured using the wax-like substance C.

Subsequently, as other physical properties of the wax-like substance C, the number average molecular weight (Mn) and the weight average molecular weight (Mw) were determined based on the following conditions of the GPC method.
Each was measured. Table 2 shows the results.

GPC measurement conditions Column: AD80M / S Mobile phase: o-dichlorobenzene Detector: IR (3.42 μm) Temperature: 140 ° C. Flow rate: 1.0 ml / min Sample concentration: 2.0 mg / ml test Room temperature: 22 ° C. For comparison, the number average molecular weight and the weight average molecular weight of a conventional wax-like substance and each commercially available wax by a conventional manufacturing apparatus using a single-stage Rostor are also the same. Was measured. Table 2 shows the results.

[0079]

[Table 2]

The commercially available casting waxes (made in Japan) described in Table 2 above are called utility waxes, and the commercially available casting waxes (manufactured by Ferris, USA) described in Table 2 above are used. Is what is called a hard wax.

From the results shown in Table 2, the wax-like substance C of the present application has Mn of 3 × 10 ^{3 to} 7.5 × 10 ³ , M
w is 5 × 10 ³ to 4 × 10 ⁴ and Mw / Mn is 2 to 5.5.
And Mn is 5 × 10 ³
７7 × 10 ³ , Mw is 1 × 10 ^{4 to} 3.5 × 10 ⁴ , M
It is understood that those having w / Mn in the range of 3 to 5 are desirable.

[0082]

According to the present invention, there is provided an apparatus for producing a waxy substance,
As described above, the upper and lower ends are open, and the raw material is heated and melted to form a wax-like substance. A communication pipe is provided laterally on the inner peripheral wall of the basket, for communicating the combustible gas generated in the tank into the combustion basket, and the material receiving tray is provided.
Are multi-stages displaced from each other along the vertical direction.
As shown in the figure, the upper raw material pan
Coaxially with the lower annular saucer with an inner diameter smaller than the diameter
It is configured to have.

Thus, uneven distribution of the above-mentioned raw materials and porous
Inability to introduce gas due to clogging of raw material in raw material pan
Stabilization makes the temperature inside the combustion basket uneven and
Since it is possible to reduce control defects,
The heating of the fuel can be made more uniform, and
The efficiency of melting and deplasticizing the above materials by heat
There is an effect that it can be improved .

[Brief description of the drawings]

FIG. 1 is a schematic sectional view of an apparatus for producing a wax-like substance of the present invention.

FIG. 2 is a perspective view of a roster of the manufacturing apparatus.

FIG. 3 is a front view of the above-mentioned roaster.

FIGS. 4A and 4B are explanatory views of an upper roostor in the roostor, wherein FIG. 4A is a front view and FIG.

FIGS. 5A and 5B are explanatory views of a lower roostor in the roostor, wherein FIG. 5A is a front view and FIG.

FIG. 6 is a schematic sectional view of a conventional wax-like substance manufacturing apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Receiving tank 2 Basket for combustion 3 Rostor (raw material tray) 4 Catalyst tank (basket for promoting deplasticization) A Raw material B Melt C Waxy substance

Claims (1)

(57) [Claims] 1. A tank for receiving a melt of a wax-like substance is provided having an upper end opening, and upper and lower ends are opened,
A combustion basket for heating and melting the raw material is attached to the upper end opening, and a number of air introduction holes are provided in a peripheral wall of the combustion basket for burning combustible gas from the tank. For the lower end opening of the basket, a deplasticization promoting basket that is opened at the upper end, the peripheral wall is porous, and is disposed inside the tank, and the porous raw material tray for mounting the raw material is provided Lateral the inner peripheral wall of the combustion basket, communicating pipe for delivering the generated combustible gas in the tank to the combustion in the basket is provided, the raw material receiving tray along a vertical direction Displace each other
And a disc-shaped upper material pan and upper
An annular lower raw material pan with an inner diameter smaller than the outer diameter of the raw material pan
And a device for producing a wax-like substance, wherein