JP6948065B2 - chimney - Google Patents

Description

The present invention relates to a chimney, and more particularly to a chimney for sufficiently lowering the temperature of exhaust gas.

So far, a configuration has been devised to lower the temperature of the gas discharged from the incinerator for the purpose of lowering the chimney and preventing the scattering of harmful substances. The invention disclosed in Patent Document 1 has a configuration in which water and dust contained in the exhaust gas are supplemented by spraying and contacting the exhaust gas flowing in the flue with atomized low-temperature water, and is disclosed in Patent Document 2. In the present invention, an air-cooled portion and a water-cooled portion are provided in the flue, and these are provided as a double pipe, and the middle thereof functions as an air flow path or a cooling water circulation flow path.

Japanese Unexamined Patent Publication No. 9-166315 Japanese Unexamined Patent Publication No. 2003-139321

The technique disclosed in Patent Document 1 described above has a configuration in which a flue is arranged in a horizontal direction and a nozzle for spraying atomized low-temperature water is provided above the flue. However, since the exhaust gas discharged from the incinerator tends to rise and cannot move smoothly along the flue, a draft fan is provided at the entrance of the flue. Further, since the atomized low-temperature water sprayed from the nozzle is dropped onto the smoke tube constituting the flue, a part of the smoke tube is composed of a perforated plate, and a water collecting pit is provided below the perforated plate. The structure was such that low-temperature water that had passed through the perforated plate was accumulated.

However, guiding the exhaust gas continuously generated from the incinerator to the flue by the draft fan causes the emission efficiency of the exhaust gas to depend on the performance of the fan, which causes a decrease in combustion efficiency due to the stagnation of the exhaust gas. Is a concern. In addition, the low-temperature water sprayed in the flue is sprayed in the form of mist, but for drainage, it must pass through a perforated plate provided in a part of the flue (smoke tube), and the perforated plate. In order to discharge the treated water to the flue pit by natural flow from the water, the perforation provided in the perforated plate needs to have an appropriate size, so that the exhaust gas pressurized by the draft fan leaks from the perforation. Was also a concern.

Therefore, according to the technique disclosed in Patent Document 2, an air-cooled portion and a water-cooled portion are provided, and further, the flue and the outside are formed by forming a circulation flow path in the middle of the double pipe also in the water-cooled portion. It has been devised to have a structure in which the two are not communicated with each other by a perforated plate or the like.

However, in the chimney having the above configuration, since the cooling water does not come into direct contact with the exhaust gas, a cooling effect cannot be expected, and as a result, the chimney has to be configured to meander. Further, such meandering of the smoke tube uses a plurality of U-shaped and inverted U-shaped meandering portions, and as a result, the exhaust gas is moved in the vertical direction. Therefore, an ejector device (intake fan) for that purpose. Was in need.

Further, in Patent Documents 1 and 2 described above, since the flues are arranged sideways or vertically, the updraft of the exhaust gas itself heated by the combustion equipment is ignored, and the exhaust gas is smooth. It would hinder the flow of.

The present invention has been made in view of the above points, and an object of the present invention is to provide a chimney capable of sufficiently lowering the temperature of the exhaust gas while utilizing the updraft of the exhaust gas itself. Is.

Therefore, the present invention is a chimney installed in an incineration facility, which is provided with an inclined smoke tube having a flue inclined in the vertical direction and continuously provided upward from the inclined smoke tube, and discharges cooling water to the inside. It is characterized by including a cooling smoke pipe having means and a water collecting means provided vertically below the cooling smoke pipe and for collecting cooling water discharged from the cooling water discharging means provided in the cooling smoke pipe. do.

According to the above configuration, the exhaust gas passes through the inclined smoke pipe and moves to the cooling smoke pipe, but the movement at this time is based on the updraft generated due to the high temperature of the exhaust gas. Further, since the cooling smoke pipe is provided with the cooling water discharge means, the cooling water is discharged at a position biased from the inlet of the inclined smoke pipe, and the flow-down position or the dropping position of the cooling water is the inlet of the inclined smoke pipe. Will be in a different place. Therefore, by installing the water collecting means at these different places, it is possible to collect the cooling water without providing a perforation in the smoke pipe.

Further, the present invention is a chimney installed in an incineration facility, which is connected to the incineration facility and has a rising smoke pipe whose flue is in the vertical direction, and a rising smoke pipe which is continuously provided in the rising smoke pipe to vertically rotate the flue. An inclined smoke tube that is inclined with respect to the direction, a cooling smoke tube that is continuously provided upward from the inclined smoke tube and has a cooling water discharge means inside, and a cooling smoke tube that is close to the rising smoke tube in the vertical direction below the cooling smoke tube. It is characterized by being provided at a position and provided with a water collecting means for accumulating the cooling water discharged from the cooling water discharging means provided in the cooling smoke pipe.

According to the above configuration, the exhaust gas discharged from the incinerator can be first guided to the inclined smoke pipe through the rising smoke pipe, and can be raised along the inclined smoke pipe by utilizing the updraft of the exhaust gas itself. .. Further, since the water collecting means is provided in the vicinity of the rising smoke pipe, the flow of the exhaust gas passing through the inclined smoke pipe is not obstructed.

In the invention of each of the above configurations, it is preferable that the inclined smoke tube is formed by forming an inclined flue by an guiding member which is inclined at an angle of 30 degrees to 45 degrees with respect to the vertical direction.

In the case of the above configuration, the flue can be inclined at an angle of 30 to 45 degrees, and the flue can be moved based on the updraft of the exhaust gas itself. Further, since the flue is formed to be inclined by the guiding member, it is not necessary to secure the internal cross-sectional area for the exhaust gas to move as the smoke pipe. That is, the inclined smoke tube can be configured only by installing the inclined guide member in a relatively wide closed space. Here, the guide member means a configuration in which a part of the wall surface of the inclined smoke pipe is inclined, or a configuration in which the guide plate is installed on a flat plate-shaped guide plate inclined inside the inclined smoke pipe. These wall surfaces or guide plates are provided above the flue through which the exhaust gas should flow, and guide the exhaust gas rising due to the updraft in an oblique manner from above.

Further, in the case of the invention having the above configuration, it is provided so as to hang down from the guide member in the vicinity of the boundary between the inclined smoke pipe and the cooling smoke pipe to guide the flow or dripping of the cooling water discharged from the cooling water discharging means. It can be configured to include a drainage guide member for this purpose.

According to the above configuration, since the drainage guide member is provided so as to hang down from the guide member, the cooling water discharged in the cooling smoke pipe flows into the incinerator along the surface of the inclined smoke pipe (particularly the guide member). Can be prevented. This drainage guide member is composed of a plate-shaped member that hangs down (protrudes downward) from the vicinity of the upper end of the guide member (near the outlet of the inclined smoke pipe), and the cooling water transmitted to the plate-shaped member is the plate-shaped member. It will drip (or flow down) from the lower edge and will not flow down to the incinerator.

Further, in the invention having the above configuration, the cooling smoke pipe includes a cooling region provided with a cooling water discharge means and a connection region for connecting to the inclined smoke pipe, and the drainage guide member is the connection. It can be configured to be provided in the area.

According to the above configuration, the cooling water discharged in the cooling region flows down inside the cooling smoke pipe, or adheres to the wall surface and then flows down along the wall surface. In this way, since the cooling water propagating on the wall surface passes through the connection area, a part of the cooling water reaches the water collecting means directly and the other part reaches the water collecting means through the drainage guide member. .. Further, by forming the connection region, even when the discharged cooling water collides with the wall surface of the smoke tube and scatters, the droplets can be attached and the recovery efficiency of the cooling water can be improved. ..

Further, in the invention of each of the above configurations, a terminal smoke tube continuously provided in the cooling smoke tube is further provided, and the terminal smoke tube has an axis inclined with respect to the flue of the terminal smoke tube, and the lower tip thereof is provided. A rod-shaped steam trapping portion formed in contact with the wall surface in the terminal smoke tube can be provided.

According to the above configuration, since the rod-shaped steam trapping portion is provided obliquely in the terminal smoke pipe, the steam in the exhaust gas passing through the cooling smoke pipe comes into contact with the steam trapping portion. Due to the contact of the exhaust gas, a part of the cooling water discharged to the exhaust gas may evaporate and the steam may be mixed in the exhaust gas. Therefore, the steam is brought into contact with the steam trapping portion to promote cooling. Can be liquefied and the liquid can be guided to the wall surface of the terminal vapor tube. The liquid that has moved to the wall surface of the terminal smoke tube further passes through the wall surface of the cooling smoke tube and finally flows down to the water collecting means, and can be treated together with the cooling water discharged in the cooling smoke tube.

The invention of each of the above configurations further includes a terminal smoke tube continuously provided in the cooling smoke tube, and the terminal smoke tube is an outer tube that forms a space between the inner tube forming the flue and the inner tube. It can be assumed that the space portion is filled with crushed stone obtained by crushing natural ore.

According to the above configuration, the heat transferred from the inner tube of the terminal smoke tube is further transferred to the crushed stone, and the crushed stone having a large surface area can dissipate heat. This heat dissipation makes it possible to further reduce the temperature of the exhaust gas. In order to promote heat dissipation, the outer tube may be made of a porous tube such as a mesh.

In the invention of each of the above configurations, the cooling water discharge means may be composed of a plurality of water discharge pipes installed in the cooling smoke pipe, and the water discharge pipe may be configured to have a large number of perforations. ..

According to the above configuration, the discharged cooling water is in the form of fine water droplets or mist, and can be brought into contact with the majority of the exhaust gas passing through the cooling smoke pipe. If the supply of cooling water to the water discharge pipe is pressurized, the water pressure at the time of discharge will be increased, and water can be discharged to a wide range.

In the invention of each of the above configurations, the tank for storing the cooling water, the pump for pressurizing and supplying the cooling water stored in the tank to the cooling water discharging means, and the cooling water discharging means from the pump. A supply pipe for sending water and a return pipe for returning the cooling water accumulated in the water collecting means to the tank can be further provided.

According to the above configuration, the cooling water can be circulated and used, and the cooling water can be supplied in a pressurized state to the cooling water discharging means according to the output of the pump. For example, in the case of a cooling water discharge means using a water discharge pipe having a large number of perforations, it is possible to discharge water over a wide area with an appropriate water pressure. Further, by collecting the wastewater from the water collecting means, it is possible to prevent the outflow to the outside, and it is possible to recover the harmful substances by collecting the dust.

According to the present invention, since the exhaust gas is moved diagonally upward by the inclined smoke pipe, the exhaust gas can be moved without providing a forced air supply means such as a draft fan. In addition, due to the inclined smoke pipe, the position of the cooling smoke pipe is different from the position where the exhaust gas is discharged from the incineration equipment. Therefore, even if the cooling water is discharged in the cooling smoke pipe, the cooling water is used in the incineration equipment. It can be configured so that it does not flow into.

By enabling the water to be discharged at such different positions, it is possible to discharge a large amount of cooling water, so that the temperature can be sufficiently lowered by bringing a large amount of exhaust gas into contact with the cooling water. Further, in the case of the configuration in which the terminal smoke pipe is provided, heat is transferred from the exhaust gas lowered by the cooling water discharge means, which enables the exhaust gas temperature to be further lowered.

It is explanatory drawing which shows the outline of the whole incinerator using the chimney of this invention. (A) is a front view showing an embodiment of the present invention, and (b) is a cross-sectional view. It is explanatory drawing which shows the structure of embodiment of this invention. It is explanatory drawing which shows the structure of embodiment of this invention. It is explanatory drawing which shows the modification of embodiment. It is explanatory drawing which shows the modification of embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an outline of the entire incinerator facility in which the chimney of the present invention is used. As shown in this figure, the chimney 1 of the present invention is installed in the incinerator A, and the incinerator A may be a normal boiler, but incinerates combustible materials. It may be an incinerator for the purpose. The products incinerated by the incineration facility A may be paper products, wood, etc. in addition to petroleum products such as synthetic rubber and plastic products, and can be incinerated at an appropriate combustion temperature according to the products to be incinerated. ..

The present invention prevents the scattering of harmful gases such as dioxins by lowering the temperature of the exhaust gas (smoke, etc.) generated when the above-mentioned incinerator burns, and cools the incinerator early after combustion. This makes it possible to reduce the chimney.

The exhaust gas temperature lowering method in the present embodiment is a so-called water cooling method in which cooling water is ejected into the chimney to lower the passing exhaust gas temperature. The water used for cooling may be tap water to be supplied and the wastewater after being used for cooling may be discarded, but in consideration of the fact that harmful substances contained in the exhaust gas are supplemented, in this embodiment, , A water storage tank 2 is installed, and the water stored in the water storage tank 2 is circulated and supplied.

As shown in FIG. 2A, the chimney 1 of the present embodiment is basically composed of an exhaust gas introduction unit (rising smoke pipe) 3, an exhaust gas cooling unit 4, and a low temperature gas discharge unit (terminal smoke pipe) 5. It is composed. The exhaust gas introduction portion 3 is a straight pipe portion connected to the exhaust portion of the incinerator equipment A described above, and a flange portion 31 is provided at an end portion for connection with the incinerator equipment A. The exhaust gas cooling unit 4 is composed of an inclined smoke pipe 6, a cooling smoke pipe 7, and a drain portion (water collecting means) 8. By connecting the terminal smoke pipe 5 to the cooling smoke pipe 7, the exhaust gas cooling unit 4 is outward from the tip opening 51. It is supposed to be exhausted to.

As shown in FIG. 2B, the inclined smoke tube 6 inclines the flue by providing an inclined guiding member 61 with respect to the exhaust gas introduction portion 3 in which the flue is arranged in the vertical direction. The guide member 61 is composed of a part of the wall surface of the inclined smoke tube 6, and induces the rising exhaust gas by inclining the wall surface located above in the state where the flue is inclined. The guide member 61 is arranged with an inclination angle of 30 to 45 degrees with respect to the vertical direction, and by inclining it at an appropriate angle, the exhaust gas can be used while utilizing the updraft of the high-temperature exhaust gas itself. It can be guided diagonally upward. The flue is tilted by such guidance.

Further, the cooling smoke pipe 7 has a flue in the vertical direction, and the exhaust gas is guided vertically upward by the updraft of the exhaust gas passing through the inclined smoke pipe 6 described above. A cooling water discharge unit 9 is provided inside the cooling smoke pipe 7, and discharges the cooling water to the rising exhaust gas. The cooling water discharge portion 9 is composed of a header portion 91 provided on the upper side and a plurality of branch pipes 92 provided in a state of hanging from the header portion 91.

The header portion 91 is connected to the water supply pipe 93 in order to receive the supply of cooling water from the outside, and the water supply pipe 93 is arranged so as to penetrate the wall surface of the cooling smoke pipe 7. Therefore, the cooling water supplied from the outside via the water supply pipe 93 can be supplied to the individual branch pipes 92.

Further, the branch pipe 92 is formed in a bottomed cylindrical shape having a diameter smaller than that of the header portion 91, and innumerable ejection holes (perforations) 94 are provided on the side portions thereof. Therefore, the cooling water supplied to the branch pipe 92 is ejected from the ejection hole 94 into the cooling smoke pipe 7. When the supplied cooling water is pressurized, it is vigorously ejected from the ejection hole 94, and it is possible to eject even when a fine hole is formed. Moreover, at that time, the cooling water is ejected in the form of fine water droplets or mist, and it is possible to discharge the water droplets of the cooling water to almost the entire inside of the cooling smoke pipe 7.

The cooling smoke tube 7 is excellent in that the exhaust gas can be promoted to rise by aligning the flues in the vertical direction. However, when the exhaust gas rise rate is extremely high, the direction of the flue is changed. It may be inclined from the vertical direction, and the exhaust gas may be sufficiently increased while slowing down.

Since the drain portion 8 is formed in an inverted conical shape or an inverted polygonal pyramid shape and is provided directly below the cooling smoke pipe 7, the drain portion 8 receives the fall of the cooling water discharged into the cooling smoke pipe 7 and is located at one location ( Water can be collected in the apex portion) 81. The cooling water collected here is drained to the outside from the drainage portion 82 having the apex portion 81 open, or is returned to the water storage tank 2, so that the cooling water can be sequentially discharged to the outside. It is a thing.

By the way, the drain portion 8 is provided close to the exhaust gas introduction portion (rising smoke pipe) 3. That is, it is provided at a position having a sufficient distance from the cooling smoke pipe 7, and the inclined smoke pipe 6 exists between the exhaust gas introduction portion 3 and the cooling smoke pipe 7. Therefore, the exhaust gas discharged from the incinerator flows into the inclined smoke pipe 6 via the exhaust gas introduction unit 3, is further guided by the guide member 61 of the inclined smoke pipe 6, moves diagonally upward, and then enters the cooling smoke pipe 7. Inflow (see arrow in the figure). On the other hand, the cooling water is discharged inside the cooling smoke pipe 7 and then falls to the drain portion 8 directly below by free fall. Therefore, the cooling water can come into contact with the exhaust gas inside the cooling smoke pipe 7, but falls in a direction different from the movement path of the exhaust gas, and the exhaust gas can be cooled in the middle of the movement path of the exhaust gas. Become.

A partition wall portion 83 is provided at the boundary between the exhaust gas introduction portion 3 and the drain portion 8 to prevent the cooling water collected in the drain portion 8 from leaking to the exhaust gas introduction portion 3. Further, a drainage guide member 62 that hangs down from the guide member 61 is provided near the boundary between the inclined smoke pipe 6 and the cooling smoke pipe 7, and the cooling water that moves to the exhaust gas introduction portion 3 along the wall surface of the guide member 61 is provided. It is guided to the drain section 8. Specifically, by providing the guide member 61 in a state where the plate-shaped member hangs down over the entire width direction of the wall surface, a plane having a steeper slope (for example, vertically downward) than the inclination angle of the guide member 61 is formed. By transmitting the cooling water to the flat surface, the dropping of the cooling water to the drain portion 8 directly below is guided.

Next, the details of each part will be described. FIG. 3 is a detailed view showing the configurations of the exhaust gas introduction portion (rising smoke pipe) 3 and the inclined smoke pipe 6. Both of these smoke pipes 3 and 6 are integrally configured and are connected to the cooling smoke pipe 7. Therefore, a continuous portion 10a is provided on the cooling smoke pipe 7, and a flange 11a for connection is provided at the upper end of the continuous portion 10a. Therefore, the continuous portion 10a forms a part of the connection region in the cooling smoke pipe 7.

The exhaust gas introduction portion 3 is formed by a rectangular tubular pipe as a whole, and is configured by welding a wall surface portion 30d to a peripheral portion having a U-shaped cross section by three side walls 30a, 30b, and 30c. Will be done. The side wall 30c located at the back is continuous with the drain portion 8, and the other side walls 30a and 30b are configured to also serve as the side walls 60a and 60b of the inclined smoke pipe 6.

The inclined smoke tube 6 has a peripheral portion having a U-shaped cross section formed by the side walls 60a and 60b as described above and the wall surface 12a continuous with the continuous portion 10a, and is continuous with the wall surface portion 30d of the exhaust gas introduction portion 3 (integrally). By welding the guide member 61 (constituently configured), a flue having an appropriate space is formed. Since the guide member 61 is installed in an inclined state, the end edges of the side walls 60a and 60b are formed in an oblique shape according to the inclination angle of the guide member 61.

In the present embodiment, the partition wall portion 83 formed between the exhaust gas introduction portion 3 and the drain portion 8 is composed of a flange portion for connecting the two. Therefore, the integrated partition wall portion 83 is formed by fixing (welding) the flange portion. Further, the drainage guide member 62 is provided in a state where the plate-shaped member is fixed to the inner wall surface of the guide member 61 in advance, and is provided in a state of hanging inside by joining the guide member 61.

Since the configuration is as described above, as shown in the figure, the end edges of the side walls 30a, 30b, 60a, and 60b of the plate-shaped member in which the wall surface portion 30d of the exhaust gas introduction portion 3 and the guide member 61 are integrally formed. The exhaust gas introduction portion 3 and the inclined smoke pipe 6 each have a hollow cylindrical shape and can form a flue by fixing the exhaust gas introduction portion 3 and the inclined smoke pipe 6 by welding or the like in a state of matching the above.

Further, FIG. 4 shows the details of the cooling smoke pipe 7. FIG. 4A shows the state inside the cooling smoke tube 7, and FIG. 4B shows the state of the cooling water discharge unit 9. As shown in these figures, the cooling smoke tube 7 is composed of a rectangular tubular pipe as a whole. Further, a connecting portion 10b for connecting to the continuous portion 10a of the inclined smoke tube 6 is configured in the lower portion, and a flange 11b is provided at the lower end thereof so as to be able to connect to the flange 11a of the continuous portion 10a described above. There is. By connecting both flanges 11a and 11b in such a state, a connecting region of the cooling smoke pipe 7 is formed between the continuous portion 10a and the connecting portion 10b.

As described above, the cooling water discharge unit 9 is installed inside the cooling smoke pipe 7. The diameter of the discharge section installation area 70 is larger than that of other smoke tubes so that the flue of the cooling smoke tube 7 does not shrink due to the installation of the cooling water discharge section 9. Therefore, the cooling water discharge unit 9 is provided along the inner wall surface of the expanded installation area 70.

That is, in the case of the present embodiment in which the cooling smoke pipe 7 is composed of a rectangular tubular pipe, the header portion 91 is arranged in the inner peripheral direction above the installation area (diameter expansion portion) 70, and is also a branch pipe. The 92 is arranged along the inner surface of the individual wall surfaces (four wall surfaces). In order to make such an arrangement, the cooling water discharge unit 9 is provided so as to form a substantially quadrangular tubular body as a whole, as shown in the figure.

In order to install these cooling water discharge portions 9 inside the cooling smoke pipe 7, in the present embodiment, a part of the wall surface 71 (particularly of the discharge portion installation area 70) of the cooling smoke pipe 7 is separately provided to discharge the cooling water. After the portion 9 is installed inside, the wall surface 71 is fixed by welding or the like. By selecting the wall surface 71 to be fixed to which the water supply pipe 93 is provided, the water supply pipe 93 can be easily installed. In order to install the water supply pipe 93, an insertion portion 72 is bored in the wall surface 71, and the water supply pipe 93 is sealed in the inserted state.

Further, by continuously connecting the terminal smoke pipe 5 to the cooling smoke pipe 7, the exhaust gas passing through the cooling smoke pipe 7 moves to the opening 51 while maintaining the ascending speed, and is discharged to the outside from the opening 51. NS. Maintaining the ascending speed means that, firstly, the exhaust gas induced in the cooling smoke pipe 7 with an appropriate ascending speed passes through the flue having almost the same cross-sectional area, which affects the speed. Can be eliminated. This is because when the same amount of exhaust gas moves, it is induced by the upward pressure of the subsequent exhaust gas, so that the fluid having an appropriate pressure moves. Secondly, when the air pressure is opened at the upper end of the cooling smoke pipe 7, the pressure inside the cooling smoke pipe 7 is not stable, and as a result, the pressure change causes the flow velocity change. The flow velocity is stabilized inside the cooling smoke pipe 7.

By stabilizing the moving speed of the exhaust gas moving inside the cooling smoke pipe 7 in this way, an appropriate amount of cooling water is provided for the exhaust gas passing inside the cooling water discharge unit 9 (particularly between the plurality of branch pipes 92). Will come into contact with each other, and the cooling (water cooling) effect can be stably applied. As a result, the temperature of the exhaust gas can be sufficiently lowered.

Since the embodiment of the present invention has the above-described configuration, the high-temperature exhaust gas is guided by the rising smoke pipe 3 and the inclined smoke pipe 6, moves diagonally upward, and is cooled by the cooling water in the cooling smoke pipe 7. It will be. At this time, since the exhaust gas has a high temperature, it moves due to the updraft of the exhaust gas itself, so that it is not necessary to provide a forced air supply means such as a draft fan. Further, since the cooling water discharged from the cooling smoke pipe 7 falls toward the drain portion 8 directly below and is discharged sequentially, it is possible to prevent the cooling water from being mixed into the incinerator facility.

The embodiments of the present invention are as described above, but the present invention is not limited to the above-described embodiments, and a part of the above-described embodiments may be partially modified or other elements may be added. It is possible.

For example, as shown in FIG. 5, an inner pipe 52 having a double pipe structure at the terminal smoke pipe 5, that is, having a cross-sectional area of the flue similar to that of the cooling smoke pipe 7 (particularly inside the cooling water discharge portion 9), and the inner pipe 52. It may be composed of an outer pipe 53 forming a space between the inner pipe 52 and the space, and the space may be filled with crushed stone 54 formed by crushing natural ore. In the case of such a configuration, the heat of the exhaust gas whose temperature has dropped through the cooling smoke pipe 7 can be further transferred to the inner pipe 52, and the heat can be absorbed by the crushed stone (crushed stone in contact with the inner pipe 52) 54. can. The heat absorbed by the crushed stone 54 is transferred to another neighboring crushed stone 54 and dissipated by the crushed stone having a large surface area, so that the temperature of the exhaust gas can be further lowered through the inner pipe 52. The outer tube 53 may be made of a thin wall or have a mesh structure in order to promote heat dissipation by the crushed stone 54.

Further, as shown in FIG. 6, a plurality of rod-shaped members (steam trapping portions) 13 that are inclined may be installed inside the terminal smoke tube 5. In this case, a sufficient space is provided so that the exhaust gas passing through the flue does not stagnate. However, for example, the terminal smoke pipe 5 is a quadrangular cylinder so that the rod-shaped member 13 exists in the path through which the exhaust gas moves. In the case of a shaped pipe, as shown in the figure, it has a long structure that extends from the upper part of one wall surface to the lower part of the other wall surface facing the other wall surface, and is installed in an inclined state. In the illustrated example, the two facing wall surfaces are inclined toward the other wall surface, but the rod-shaped member 13 may be inclined to only one of them, and the rod-shaped member 13 is also inclined in the orthogonal direction. It may be provided.

In the case of the above configuration, since the rod-shaped member 13 is provided inside the terminal smoke tube 5, the exhaust gas passing through the cooling smoke tube 7 opens the inside of the terminal smoke tube 5 while contacting the rod-shaped member 13. It will move to section 51. At this time, when the rod-shaped member 13 has a low temperature, the steam contained in the exhaust gas can be cooled and the steam can be liquefied. At this time, since the liquefied liquid adheres to the surface of the rod-shaped member 13, the axis of the rod-shaped member is inclined in order to guide the liquid to the wall surface. The liquid adhering to the rod-shaped member 13 flows down along with the inclination of the axis, moves to the inner wall surface of the terminal smoke tube 5, further flows down from the wall surface to the inner wall surface of the cooling smoke tube 7, and finally the drain portion. It will be collected in the water and collected together with other cooling water.

The installation of such a rod-shaped member (steam trapping portion) 13 is to prevent the cooling water discharged when the exhaust gas is cooled from being heated and evaporated, which is discharged together with the exhaust gas. Therefore, if the flue (particularly the flue of the terminal smoke tube 5) is long, it is assumed that the flue is gradually cooled when passing through the flue and may adhere to the wall surface as water droplets, but the chimney is reduced. Therefore, it can effectively capture vapors when constructed in a short flue. Therefore, each of the plurality of steam trapping portions 13 may be tubular so that cooling water or cold air can be supplied to the inside. Although the temperature of the passing exhaust gas has dropped through the cooling smoke tube 7, the temperature is higher than normal temperature. This is so that it can be cooled appropriately.

Further, the terminal smoke tube 5 may have both a configuration in which the space portion is filled with crushed stone 54 as a double pipe structure and a configuration in which the vapor trapping portion 13 is provided. Since one of these configurations is for promoting a further temperature decrease of the exhaust gas and the other is for liquefying and removing steam, each function can be performed even if both configurations are provided. It can be demonstrated at the same time. In this case, since the steam trapping portion 13 is inclined toward the wall surface toward the opening 51, the moving direction of the exhaust gas can be guided not a little toward the wall surface, and the cooling effect of the exhaust gas on the wall surface can be obtained. Can be improved. Further, in this case, cooling water is supplied to the space portion of the terminal smoke tube 5 having a double pipe structure to cool the filled crushed stone 54, and a part of the cooling water supplied to the space portion is tubular. It is possible to improve the cooling effect of the exhaust gas and the steam trapping effect by flowing the water into the steam trapping unit 13. In addition, these cooling waters may be configured so that they can be drained at the lower end of the terminal smoke pipe 5 so that they can be circulated.

Further, in the above-described embodiment, the shapes of the smoke pipes 5, 6 and 7 are all quadrangular cylindrical pipes, but the shape is not limited thereto. Therefore, it may be composed of a circular tubular pipe or a polygonal tubular pipe. Further, the inclination angle of the guide member 61 is 30 to 45 degrees, but if the upper end position of the inclined smoke pipe 6 (installation position of the cooling smoke pipe 7) deviates from the exhaust gas introduction portion 3 in the vertical direction, that angle is set. May be changed.

Although the details of the above embodiment have been described, the temperature of the exhaust gas can be lowered by water cooling by the cooling smoke pipe 7 at a position where the exhaust gas is obliquely guided by the inclined smoke pipe 6 and is continuous with the inclined smoke pipe 6, and the cooling is performed. If the structure is such that water can be collected by the drain portion 8 arranged directly under the smoke pipe 7, at least the moving direction of the exhaust gas and the moving path of the cooling water can be separated, and the smoke pipe is cooled without being arranged in the horizontal direction. It is something that can be done.

1 Chimney 2 Tank 3 Exhaust gas introduction part (rising smoke pipe)
4 Exhaust gas cooling unit 5 Low temperature gas exhaust unit (terminal smoke pipe)
6 Inclined smoke pipe 7 Cooling smoke pipe 8 Drain part (water collecting means)
9 Cooling water discharge unit (cooling water discharge means)
10a Continuous part 10b Connection part 11a, 11b Flange 12a Wall surface 13 Steam trapping part (rod-shaped member)
30a, 30b, 30c Side wall 30d Wall surface 31 Flange 51 Opening 52 Inner pipe 53 Outer pipe 54 Crushed stone 60a, 60b Side wall 61 Guidance member 62 Drainage guide member 70 Discharge part installation area (diameter expansion part)
71 Wall surface 72 Insertion part 81 Top part of drain part 82 Drainage part 83 Partition wall 91 Header part 92 Branch pipe 93 Water supply pipe 94 Ejection hole (perforation)
A incinerator

Claims (9)

A chimney installed in an incineration facility, which is an inclined smoke pipe having a flue inclined in the vertical direction, and a cooling smoke pipe which is continuously provided upward from the inclined smoke pipe and has a cooling water discharge means inside. The chimney is provided below the cooling smoke pipe in the vertical direction, and is provided with a water collecting means for collecting the cooling water discharged from the cooling water discharging means provided in the cooling smoke pipe. A chimney installed in an incineration facility, which is connected to the incineration facility and has an ascending smoke tube whose flue is oriented in the vertical direction, and a rising smoke tube which is continuously provided in the ascending smoke tube to incline the flue in the vertical direction. The inclined smoke pipe, the cooling smoke pipe which is continuously provided upward from the inclined smoke pipe and has a cooling water discharge means inside, and the cooling smoke pipe provided at a position close to the rising smoke pipe in the vertical direction of the cooling smoke pipe. A chimney provided with a water collecting means for collecting cooling water discharged from a cooling water discharging means provided in a cooling smoke pipe. The chimney according to claim 1 or 2, wherein the inclined smoke tube is formed by forming an inclined flue by an guiding member inclined at an angle of 30 to 45 degrees with respect to the vertical direction. A claim that is provided hanging from the guiding member in the vicinity of the boundary between the inclined smoke pipe and the cooling smoke pipe, and is provided with a drainage guiding member for guiding the flow or dropping of the cooling water discharged from the cooling water discharging means. Item 3. The chimney according to item 3. The cooling smoke pipe includes a cooling region provided with a cooling water discharge means and a connection region for connecting to the inclined smoke pipe, and the drainage guide member is provided in the connection region according to claim 4. The listed chimney. The cooling smoke tube is further provided with a terminal smoke tube continuously provided, the terminal smoke tube has an axis inclined with respect to the flue of the terminal smoke tube, and the lower tip abuts on the wall surface in the terminal smoke tube. The chimney according to any one of claims 1 to 5, which comprises a rod-shaped steam trapping portion. The cooling smoke pipe is further provided with a terminal smoke pipe continuously provided, and the terminal smoke pipe is composed of an inner pipe forming a flue and an outer pipe forming a space between the inner pipes. The chimney according to any one of claims 1 to 6, wherein the portion is filled with crushed stone obtained by crushing natural ore. The method according to any one of claims 1 to 7, wherein the cooling water discharge means is composed of a plurality of water discharge pipes installed in the cooling smoke pipe, and the water discharge pipe is configured to have a large number of perforations. Chimney. A tank for storing cooling water, a pump for pressurizing and supplying the cooling water stored in the tank to the cooling water discharging means, a supply pipe for supplying water from the pump to the cooling water discharging means, and the like. The chimney according to any one of claims 1 to 8, further comprising a return pipe for returning the cooling water accumulated in the water collecting means to the tank.

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