CN215372501U - Be used for active carbon regeneration incineration disposal exhaust-heat boiler structure - Google Patents
Be used for active carbon regeneration incineration disposal exhaust-heat boiler structure Download PDFInfo
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- CN215372501U CN215372501U CN202121806246.XU CN202121806246U CN215372501U CN 215372501 U CN215372501 U CN 215372501U CN 202121806246 U CN202121806246 U CN 202121806246U CN 215372501 U CN215372501 U CN 215372501U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
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Abstract
A waste heat boiler structure for activated carbon regeneration incineration treatment comprises a high-temperature flue gas cooling structure, a flue gas quenching structure and an upper boiler barrel, wherein the high-temperature flue gas cooling structure is a double-return-stroke vertical cavity structure surrounded by membrane type water-cooled walls, the double-return-stroke vertical cavity structure consists of a flue gas descending channel and a flue gas ascending channel, a flue gas inlet is formed in the upper part of the flue gas descending channel, and a connecting flue is formed in the upper part of the flue gas ascending channel and is connected with the flue gas quenching structure through the connecting flue; the flue gas quenching structure is characterized in that a convection bank heating surface is longitudinally arranged in the flue gas quenching structure, a flue gas outlet is formed in the lower portion of the convection bank heating surface, and both the membrane water-cooled wall and the convection bank heating surface are connected with a boiler barrel on the upper portion. The utility model provides a waste heat boiler structure for activated carbon regeneration and incineration treatment, which can effectively recover heat energy of a contact type quenching tower.
Description
Technical Field
The utility model relates to the technical field of environment-friendly devices, in particular to a waste heat boiler structure for activated carbon regeneration and incineration treatment.
Background
7.6.1.7 regulations in the technical guideline for hazardous waste disposal (HJ2042-2014) specify that high-temperature flue gas generated by an incineration disposal system should be treated by rapid cooling, and the temperature of the flue gas should be reduced to below 200 ℃ within 1s so as to reduce the residence time of the flue gas in a temperature region of 200-500 ℃ and prevent the generation or secondary generation of dioxin.
At present, a quenching device for regeneration and incineration of activated carbon adopts a contact type quenching tower device, and high-temperature flue gas with the temperature of about 550 ℃ coming from a waste heat boiler after dangerous waste incineration is rapidly cooled to be below 200 ℃. The quenching tower adopts a water spraying direct cooling mode, the flue gas flowing through the tower is directly contacted with the sprayed liquid after atomization, the mass transfer speed and the heat transfer speed are high, the sprayed liquid is quickly vaporized to take away a large amount of heat, and the temperature of the flue gas can be quickly reduced to be below 200 ℃, so that the regeneration of dioxin-like substances is avoided. However, the contact type quenching tower device faces a serious problem of heat energy waste, namely, the exhaust temperature of the flue gas is reduced to below 200 ℃ rapidly at the stage of over 500 ℃, although the exhaust temperature meets the environmental protection requirement, the heat energy in the process is not effectively recycled.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides a waste heat boiler structure for activated carbon regeneration and incineration treatment, which can effectively recover the heat energy of a contact type quenching tower.
The technical scheme adopted by the utility model for solving the technical problems is as follows:
a waste heat boiler structure for activated carbon regeneration incineration treatment comprises a high-temperature flue gas cooling structure, a flue gas quenching structure and an upper boiler barrel, wherein the high-temperature flue gas cooling structure is a double-return vertical cavity structure surrounded by a membrane type water-cooled wall, the double-return vertical cavity structure consists of a flue gas descending channel and a flue gas ascending channel, the upper part of the flue gas descending channel is provided with a flue gas inlet, and the upper part of the flue gas ascending channel is provided with a connecting flue and is connected with the flue gas quenching structure through the connecting flue; the flue gas quenching structure is characterized in that a convection bank heating surface is longitudinally arranged in the flue gas quenching structure, a flue gas outlet is formed in the lower portion of the convection bank heating surface, and both the membrane water-cooled wall and the convection bank heating surface are connected with a boiler barrel on the upper portion.
Furthermore, the periphery of the inner wall of the double-return-stroke vertical cavity structure is provided with a membrane water-cooling wall, a partition wall membrane water-cooling wall is arranged between the smoke descending channel and the smoke ascending channel, and two sides of the partition wall membrane water-cooling wall are washed by high-temperature smoke.
Furthermore, the membrane type water-cooling wall and the partition wall membrane type water-cooling wall are provided with water-cooling pipes at equal intervals, the upper part and the lower part of the membrane type water-cooling wall and the partition wall membrane type water-cooling wall are respectively provided with an upper header and a lower header which are connected with the water-cooling pipes, and the boiler barrel is connected with the lower header through a descending pipe and is connected with the upper header through an upper communicating pipe.
Furthermore, ash bucket structures are respectively arranged at the lower parts of the high-temperature flue gas cooling structure and the flue gas quenching structure.
Furthermore, the heating surface of the convection bank is of a bundling smoke pipe structure.
Furthermore, the drum is connected with the lower part of the smoke tube through a descending pipe and is connected with the upper part of the smoke tube through a steam-water eduction pipe.
Furthermore, a plurality of diagonal draw bars are arranged on the heating surface of the smoke tube.
Compared with the prior art, the utility model has the advantages that:
this novel adoption one kind is respectively with high temperature flue gas cooling structure and flue gas rapid cooling structure that the drum is connected, realize the high temperature flue gas cooling more than 800 ℃ to more than 500 ℃ through high temperature flue gas cooling structure, then through flue gas rapid cooling structure with the extremely fast cooling of the inferior high temperature flue gas more than 500 ℃ to below 200 ℃, at these two in-process, carry out recycle to the heat energy in the flue gas respectively, adopt diaphragm type wall structure + tobacco pipe heating surface structure promptly, the tobacco pipe heating surface has still retrieved the partial heat of flue gas when the rapid cooling, the waste of heat of contact quench tower has been avoided.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a side view structural diagram of the present invention;
FIG. 3 is a side view of the present invention.
In the figure, 1-boiler barrel, 2-high temperature flue gas cooling structure, 21-flue gas inlet, 22-double-return vertical cavity structure, 23-connecting flue, 24-communicating pipe, 25-membrane water wall, 26-partition wall membrane water wall, 27-down pipe, 28-upper header, 29-lower header, 3-flue gas quenching structure, 31-flue pipe, 32-diagonal draw bar, 33-flue gas outlet, 34-steam water outlet pipe, 35-boiler shell and 4-ash bucket.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
As shown in fig. 1-3, a waste heat boiler structure for activated carbon regeneration incineration treatment comprises a high-temperature flue gas cooling structure 2, a flue gas quenching structure 3 and an upper drum 1, wherein the high-temperature flue gas cooling structure 2 is a double-return vertical cavity structure 22 surrounded by a membrane water wall 25, the double-return vertical cavity structure 22 is composed of a flue gas descending channel and a flue gas ascending channel, the upper part of the flue gas descending channel is provided with a flue gas inlet 21, and the upper part of the flue gas ascending channel is provided with a connecting flue 23 and is connected with the flue gas quenching structure 3 through the connecting flue 23; the flue gas quenching structure 3 is internally provided with a convection bank heating surface which is longitudinally arranged, the lower part of the convection bank heating surface is provided with a flue gas outlet 33, and the membrane type water-cooled wall 25 and the convection bank heating surface are both connected with the upper boiler barrel 1.
Furthermore, the periphery of the inner wall of the double-return-stroke vertical cavity structure 22 is provided with a membrane water-cooling wall 25, a partition wall membrane water-cooling wall 26 is arranged between the smoke descending channel and the smoke ascending channel, and both sides of the partition wall membrane water-cooling wall 26 are washed by high-temperature smoke.
Furthermore, water cooling pipes are arranged on the membrane water cooling wall 25 and the partition wall membrane water cooling wall 26 at equal intervals, an upper header 28 and a lower header 29 connected with the water cooling pipes are respectively arranged at the upper part and the lower part of the membrane water cooling wall 25 and the partition wall membrane water cooling wall 26, and the boiler barrel 1 is connected with the lower header 29 through a downcomer 27 and is connected with the upper header 28 through an upper communicating pipe 24.
Furthermore, the lower parts of the high-temperature flue gas cooling structure 2 and the flue gas quenching structure 3 are respectively provided with an ash bucket 4 structure, and when the high-temperature flue gas circulates in the double-return vertical cavity structure 22, the high-temperature flue gas flows upwards after being folded by 180 degrees at the ash bucket 4 at the bottom.
Further, the illustrated convection bank heating surface is in a structure of a bundling smoke tube 31.
Further, the drum 1 is connected with the lower part of the smoke tube 31 through a down pipe 27 and connected with the upper part of the smoke tube 31 through a steam-water outlet pipe 34. The boiler barrel 1 supplies water to the heating surface of the smoke pipe 31 through the downcomer 27, the water in the heating surface of the smoke pipe 31 is heated by smoke to be changed into a steam-water mixture to the top of the concave chamber, the steam-water mixture flows to the boiler barrel 1 through the steam-water outlet pipe 34, and qualified steam after steam-water separation is sent to a hot user through a main steam pipeline.
Furthermore, a certain number of diagonal draw bars 32 are arranged on the heating surface of the smoke tube 31 according to the pressure bearing to ensure the pressure bearing strength.
The waste heat boiler is an assembled single-drum 1 natural circulation, negative-pressure operation, outdoor arrangement and membrane wall + convection bank waste heat boiler. The high-temperature flue gas cooling structure 2 is of a membrane wall structure, the radiation heat exchange section is of a vertical membrane wall water-cooling cavity, and the return stroke of the radiation heat exchange section is double return strokes. The flue gas enters from a flue gas inlet 21 on the front wall, flows out from a connecting flue 23 on the back wall, enters a convection bank heating surface vertically arranged behind, and enters downstream process equipment after going out. The membrane wall adopts a supporting structure, a rigid beam is arranged outside the membrane wall, the whole membrane wall forms a rigid hoop type structure, and the weight of the water-cooled wall, the furnace wall and the rigid beam which belong to the water-cooled wall and the like is supported on a lower cross beam through a water-cooled wall system and can freely expand upwards. The heating surface of the convection bank is fixed on the steel structure through the ear type support. The high-temperature flue gas with the temperature of about 550 ℃ from the high-temperature flue gas cooling structure 2 enters the flue pipe 31 longitudinally after entering the top concave chamber, and the flue gas enters downstream process equipment after being cooled to the temperature below 200 ℃. The top alcove employs a thermal insulation layer to protect the pan shell 35. The average flow velocity in the smoke tube 31 is very high, and the smoke in the heating surface of the smoke tube 31 is reduced to below 200 ℃ in 1S, so that the regeneration of dioxin substances is avoided.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and any modifications made by those skilled in the art without departing from the spirit of the present invention will fall within the protection scope of the present invention.
Claims (7)
1. The utility model provides a be used for activated carbon regeneration to burn and handle exhaust-heat boiler structure which characterized in that: the high-temperature flue gas cooling structure is a double-return-stroke vertical cavity structure surrounded by a membrane type water-cooled wall, the double-return-stroke vertical cavity structure consists of a flue gas descending channel and a flue gas ascending channel, a flue gas inlet is arranged at the upper part of the flue gas descending channel, and a connecting flue is arranged at the upper part of the flue gas ascending channel and is connected with the flue gas quenching structure through the connecting flue; the flue gas quenching structure is characterized in that a convection bank heating surface is longitudinally arranged in the flue gas quenching structure, a flue gas outlet is formed in the lower portion of the convection bank heating surface, and both the membrane water-cooled wall and the convection bank heating surface are connected with a boiler barrel on the upper portion.
2. The structure of the exhaust-heat boiler for activated carbon regeneration incineration disposal according to claim 1, wherein: the periphery of the inner wall of the double-return-stroke vertical cavity structure is provided with a membrane water-cooling wall, and a partition wall membrane water-cooling wall is arranged between the smoke descending channel and the smoke ascending channel.
3. The structure of the exhaust-heat boiler for activated carbon regeneration incineration disposal according to claim 2, wherein: the boiler comprises a membrane type water-cooling wall, a partition wall membrane type water-cooling wall, a boiler barrel, a water-cooling pipe, an upper header and a lower header, wherein the membrane type water-cooling wall and the partition wall membrane type water-cooling wall are provided with the water-cooling pipe at equal intervals, the upper portion and the lower portion of the membrane type water-cooling wall and the partition wall membrane type water-cooling wall are respectively provided with the upper header and the lower header which are connected with the water-cooling pipe, and the boiler barrel is connected with the lower header through a down pipe and is connected with the upper header through an upper communicating pipe.
4. The structure of the exhaust-heat boiler for activated carbon regeneration incineration disposal according to claim 1, wherein: and ash hopper structures are respectively arranged at the lower parts of the high-temperature flue gas cooling structure and the flue gas quenching structure.
5. The structure of the exhaust-heat boiler for activated carbon regeneration incineration disposal according to claim 1, wherein: the heating surface of the convection bank is a bundling smoke tube structure.
6. The structure of the exhaust-heat boiler for activated carbon regeneration incineration disposal according to claim 5, wherein: the boiler barrel is connected with the lower part of the smoke tube through a down pipe and connected with the upper part of the smoke tube through a steam-water eduction pipe.
7. The structure of the exhaust-heat boiler for activated carbon regeneration incineration disposal according to claim 5 or 6, wherein: the heating surface of the smoke tube is provided with a plurality of diagonal draw bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121806246.XU CN215372501U (en) | 2021-08-04 | 2021-08-04 | Be used for active carbon regeneration incineration disposal exhaust-heat boiler structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121806246.XU CN215372501U (en) | 2021-08-04 | 2021-08-04 | Be used for active carbon regeneration incineration disposal exhaust-heat boiler structure |
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| Publication Number | Publication Date |
|---|---|
| CN215372501U true CN215372501U (en) | 2021-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121806246.XU Active CN215372501U (en) | 2021-08-04 | 2021-08-04 | Be used for active carbon regeneration incineration disposal exhaust-heat boiler structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215372501U (en) |
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2021
- 2021-08-04 CN CN202121806246.XU patent/CN215372501U/en active Active
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