CN219709165U - Zero-discharge treatment device for waste water of garbage pyrolysis process - Google Patents
Zero-discharge treatment device for waste water of garbage pyrolysis process Download PDFInfo
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- CN219709165U CN219709165U CN202320136711.6U CN202320136711U CN219709165U CN 219709165 U CN219709165 U CN 219709165U CN 202320136711 U CN202320136711 U CN 202320136711U CN 219709165 U CN219709165 U CN 219709165U
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- pyrolysis
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- waste water
- garbage
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- 238000000197 pyrolysis Methods 0.000 title claims abstract description 78
- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 48
- 239000002351 wastewater Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 20
- 208000028659 discharge Diseases 0.000 title claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 238000010791 quenching Methods 0.000 claims abstract description 42
- 230000000171 quenching effect Effects 0.000 claims abstract description 42
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000003546 flue gas Substances 0.000 claims abstract description 35
- 238000005507 spraying Methods 0.000 claims abstract description 24
- 238000005352 clarification Methods 0.000 claims abstract description 17
- 239000000428 dust Substances 0.000 claims abstract description 16
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 10
- 230000001502 supplementing effect Effects 0.000 claims abstract description 4
- 239000010802 sludge Substances 0.000 claims description 21
- 239000002893 slag Substances 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 3
- 239000000126 substance Substances 0.000 description 6
- 239000012535 impurity Substances 0.000 description 5
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 2
- -1 and meanwhile Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000013505 freshwater Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Processing Of Solid Wastes (AREA)
Abstract
The utility model provides a zero-discharge treatment device for waste water in a garbage pyrolysis process, which comprises a device main body, wherein the device main body comprises a garbage pyrolysis treatment device, a pyrolysis flue gas treatment device and a waste water treatment device, the garbage pyrolysis treatment device comprises a pyrolysis furnace, the pyrolysis flue gas treatment device comprises a quenching tower, the waste water treatment device comprises a clarification tank and a circulating water tank, a flue gas pipeline is arranged at the top of the pyrolysis furnace, and the pyrolysis furnace is connected with the lower end part of the quenching tower through the flue gas pipeline; a plurality of spraying devices are arranged in the quenching tower, an exhaust pipe is arranged at the top of the quenching tower, the exhaust pipe sequentially passes through a cyclone dust collector and a plasma dust collector, the plasma dust collector is connected with a deacidification device through a draught fan, the upper end part of the deacidification device is connected with a chimney, the upper end part of the deacidification device is also provided with a water supplementing pipeline, and the lower end part of the deacidification device is connected with a circulating water tank; the bottom of the quenching tower is provided with a water pipe, the quenching tower is connected with the clarification tank, and the lower end part of the circulating water tank is connected with the spraying device through a circulating water pump.
Description
Technical Field
The utility model relates to the field of garbage pyrolysis, in particular to a zero-discharge treatment device for waste water in a garbage pyrolysis process.
Background
In recent years, with the increasing pace of urban construction in China, residents generate a large amount of household garbage in the daily life process, and the pollution to the living environment is serious. Besides, the household garbage is not classified except a few areas, and the household garbage has the characteristics of large quantity, complex types, less recyclable resources and the like, so that the sorting treatment difficulty is high and the treatment cost is high.
A garbage pyrolysis furnace for treating household garbage by a high-temperature pyrolysis method is suitable for urban garbage treatment. However, the wastewater generated after the pyrolysis and flue gas cleaning treatment of the household garbage contains tar, cl-, SO42-, na+ and other impurities, and is typical high-salt wastewater and wastewater treatment.
The investment and the running cost of the discharge system are high, the investment of the household garbage pyrolysis project is less, and the whole set of wastewater treatment system cannot be arranged like the large garbage incineration project.
Therefore, the existing household garbage pyrolysis wastewater discharge process can generate a large amount of wastewater, so that the system running cost is greatly increased, resources are not reasonably utilized, and the original purpose of garbage treatment projects is not met.
Disclosure of Invention
Aiming at the problems existing in the prior art, the utility model provides a zero-discharge treatment device structure for waste water of a garbage pyrolysis process, so as to solve at least one technical problem.
The technical scheme of the utility model is as follows: the zero-emission treatment device for waste water of the garbage pyrolysis process comprises a device main body, and is characterized in that the device main body comprises a garbage pyrolysis treatment device, a pyrolysis flue gas treatment device and a waste water treatment device, wherein the garbage pyrolysis treatment device comprises a pyrolysis furnace, the pyrolysis flue gas treatment device comprises a quenching tower, the waste water treatment device comprises a clarification tank and a circulating water tank, a flue gas pipeline is arranged at the top of the pyrolysis furnace, and the pyrolysis furnace is connected with the lower end part of the quenching tower through the flue gas pipeline;
the device comprises a quenching tower, a plurality of spraying devices, a cyclone dust collector, a plasma dust collector, a draught fan, a deacidification device, a chimney, a water supplementing pipeline, a circulating water tank and a circulating water tank, wherein the spraying devices are arranged in the quenching tower;
the bottom of the quenching tower is provided with a water pipe, the quenching tower is connected with the clarification tank through the water pipe, the clarification tank is connected with the circulating water tank, and the lower end part of the circulating water tank is connected with the spraying device through a circulating water pump;
the temperature in the pyrolysis furnace ranges from 800 ℃ to 1000 ℃, and the temperature in the quenching tower is less than 100 ℃.
According to the utility model, the high-temperature flue gas at the outlet of the pyrolysis furnace is utilized to evaporate the water content of the wastewater after deacidification treatment of the flue gas, and meanwhile, substances such as tar, sludge and the like in the wastewater are precipitated and dehydrated and then returned to the pyrolysis furnace together with garbage to be mixed and burned, so that the zero emission of the wastewater of the garbage pyrolysis treatment system is finally realized. The high-temperature flue gas temperature range of the pyrolysis furnace outlet is 800-1000 ℃, the generation range of dioxin can be avoided only by cooling to below 200 ℃ in a quenching tower in a short time, and a large amount of water vapor is required to be evaporated in the process. And the multilayer spraying device is arranged in the quenching tower to spray excessive deacidification wastewater, so that the temperature of the flue gas at the outlet of the quenching tower is reduced to below 100 ℃, and the deacidification wastewater is evaporated by maximally utilizing the heat in the high-temperature flue gas. Meanwhile, high-salt particles in the wastewater are carried by the flue gas, and are separated from and dedusted in a cyclone dust collector and a plasma dust collector, and the dedusted flue gas is pressurized by a draught fan and then is sent to a deacidification device to remove SO (sulfur dioxide) in the flue gas 4 2- Finally, the environment-friendly product is discharged into the atmosphere through a chimney after reaching the standard.
Further preferably, a grab bucket is installed above the pyrolysis furnace, and the grab bucket moves from the garbage pool to the pyrolysis furnace. Thereby realizing the transportation of garbage.
Further preferably, the bottom of the pyrolysis furnace is communicated with the slag pit, and a stirring device is arranged at the bottom of the pyrolysis furnace.
Thereby discharging the excess impurities out of the pyrolysis furnace.
Further preferably, the lower end of the quenching tower is funnel-shaped. The waste water generated by spraying is conveniently collected.
Further preferably, the deacidification device is connected with a drain pipe, deacidification wastewater circulates in the drain pipe, and the deacidification device is connected with the circulating water tank through the drain pipe.
The evaporated water is supplemented by the deacidification wastewater in the deacidification device, and fresh water is supplemented into the deacidification device at the same time, so that the liquid level in the deacidification device is kept stable.
Further preferably, the bottom of the clarification tank is connected with a drain pipe through a sludge pump, the drain pipe is connected with a plate-and-frame filter press, and a sludge storage hopper is arranged below the plate-and-frame filter press.
Heavier tar and other substances in the wastewater can be gathered with excessive deacidification wastewater at the bottom of the quenching tower and flow into the clarifier. The volume of the clarifier can store at least one week of circulating water, and the circulating water radiates heat and cools to the external environment in the clarifier. Meanwhile, impurities such as sludge and the like are accumulated at the bottom of the clarification tank under the action of gravity, and are sent into a plate-and-frame filter press by a sludge pump to remove redundant water. Because the sludge contains a large amount of tar and other substances, the dehydrated sludge cake also has a certain heat value, and compared with the sludge with smaller garbage treatment capacity, the sludge can be mixed with household garbage and then sent into the pyrolysis furnace for treatment, so that the solid waste production capacity of a pyrolysis system is reduced.
Further preferably, the spraying devices are arranged in the quenching tower in a step shape from top to bottom, and the spraying direction of the spraying devices is downward.
Thereby the high temperature flue gas can be rapidly cooled.
Drawings
FIG. 1 is a process flow diagram of the present utility model.
In the figure: 1. a pyrolysis furnace; 2. a quenching tower; 3. a clarification tank; 4. a circulation water tank; 5. a spraying device; 6. a cyclone dust collector; 7. a plasma dust remover; 8. an induced draft fan; 9. a deacidification device; 10. a chimney; 11. a grab bucket; 12. slag pits, 13, sludge pumps; 14. a plate and frame filter press; 15. a mud storage bucket; 16. a garbage pool; 17. and (3) a circulating water pump.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
As shown in fig. 1, the zero-emission treatment device for waste water in the garbage pyrolysis process comprises a device main body, wherein the device main body comprises a garbage pyrolysis treatment device, a pyrolysis flue gas treatment device and a waste water treatment device, the garbage pyrolysis treatment device comprises a pyrolysis furnace 1, the pyrolysis flue gas treatment device comprises a quenching tower 2, the waste water treatment device comprises a clarification tank 3 and a circulating water tank 4, a flue gas pipeline is arranged at the top of the pyrolysis furnace, and the pyrolysis furnace is connected with the lower end part of the quenching tower through the flue gas pipeline; a plurality of spraying devices 5 are arranged in the quenching tower, an exhaust pipe is arranged at the top of the quenching tower, the exhaust pipe sequentially passes through a cyclone dust collector 6 and a plasma dust collector 7, the plasma dust collector is connected with a deacidification device 9 through a draught fan 8, the upper end part of the deacidification device is connected with a chimney 10, the upper end part of the deacidification device is also provided with a water supplementing pipeline, and the lower end part of the deacidification device is connected with a circulating water tank; the bottom of the quenching tower is provided with a water pipe, the quenching tower is connected with a clarification tank through a water pipe, the clarification tank is connected with a circulating water tank, and the lower end part of the circulating water tank is connected with a spraying device through a circulating water pump 17; the temperature in the pyrolysis furnace ranges from 800 ℃ to 1000 ℃ and the temperature in the quenching tower is less than 100 ℃.
According to the utility model, the high-temperature flue gas at the outlet of the pyrolysis furnace is utilized to evaporate the water content of the wastewater after deacidification treatment of the flue gas, and meanwhile, substances such as tar, sludge and the like in the wastewater are precipitated and dehydrated and then returned to the pyrolysis furnace together with garbage to be mixed and burned, so that the zero emission of the wastewater of the garbage pyrolysis treatment system is finally realized. The high-temperature flue gas temperature range of the pyrolysis furnace outlet is 800-1000 ℃, the generation range of dioxin can be avoided only by cooling to below 200 ℃ in a quenching tower in a short time, and a large amount of water vapor is required to be evaporated in the process. And the multilayer spraying device is arranged in the quenching tower to spray excessive deacidification wastewater, so that the temperature of the flue gas at the outlet of the quenching tower is reduced to below 100 ℃, and the deacidification wastewater is evaporated by maximally utilizing the heat in the high-temperature flue gas. Meanwhile, high-salt particles in the wastewater are carried by the flue gas, and are separated from and dedusted in a cyclone dust collector and a plasma dust collector, and the dedusted flue gas is pressurized by a draught fan and then is sent to a deacidification device to remove SO (sulfur dioxide) in the flue gas 4 2- Finally, the environment-friendly product is discharged into the atmosphere through a chimney after reaching the standard.
Further preferably, a grab bucket 11 is mounted above the pyrolysis furnace, and the grab bucket moves from the garbage pool 16 to the pyrolysis furnace. Thereby realizing the transportation of garbage.
Further preferably, the bottom of the pyrolysis furnace is in communication with the slag pit 12, and a stirring device is mounted at the bottom of the pyrolysis furnace. Thereby discharging the excess impurities out of the pyrolysis furnace.
Further preferably, the lower end of the quenching tower is funnel-shaped. The waste water generated by spraying is conveniently collected.
Further preferably, the deacidification device is connected with a drain pipe, deacidification wastewater is circulated in the drain pipe, and the deacidification device is connected with the circulating water tank through the drain pipe. The evaporated water is supplemented by the deacidification wastewater in the deacidification device, and fresh water is supplemented into the deacidification device at the same time, so that the liquid level in the deacidification device is kept stable.
Further preferably, the bottom of the clarification tank is connected with a drain pipe through a sludge pump 13, the drain pipe is connected with a plate-and-frame filter press 14, and a sludge storage hopper 15 is arranged below the plate-and-frame filter press. Heavier tar and other substances in the wastewater can be gathered with excessive deacidification wastewater at the bottom of the quenching tower and flow into the clarifier. The volume of the clarifier can store at least one week of circulating water, and the circulating water radiates heat and cools to the external environment in the clarifier. Meanwhile, impurities such as sludge and the like are accumulated at the bottom of the clarification tank under the action of gravity, and are sent into a plate-and-frame filter press by a sludge pump to remove redundant water. Because the sludge contains a large amount of tar and other substances, the dehydrated sludge cake also has a certain heat value, and compared with the sludge with smaller garbage treatment capacity, the sludge can be mixed with household garbage and then sent into the pyrolysis furnace for treatment, so that the solid waste production capacity of a pyrolysis system is reduced.
Further preferably, the spraying devices are arranged in the quenching tower in a step shape from top to bottom, and the spraying direction of the spraying devices is downward. Thereby the high temperature flue gas can be rapidly cooled.
The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model.
Claims (7)
1. The zero-emission treatment device for waste water of the garbage pyrolysis process comprises a device main body, and is characterized in that the device main body comprises a garbage pyrolysis treatment device, a pyrolysis flue gas treatment device and a waste water treatment device, wherein the garbage pyrolysis treatment device comprises a pyrolysis furnace, the pyrolysis flue gas treatment device comprises a quenching tower, the waste water treatment device comprises a clarification tank and a circulating water tank, a flue gas pipeline is arranged at the top of the pyrolysis furnace, and the pyrolysis furnace is connected with the lower end part of the quenching tower through the flue gas pipeline;
the device comprises a quenching tower, a plurality of spraying devices, a cyclone dust collector, a plasma dust collector, a draught fan, a deacidification device, a chimney, a water supplementing pipeline, a circulating water tank and a circulating water tank, wherein the spraying devices are arranged in the quenching tower;
the bottom of the quenching tower is provided with a water pipe, the quenching tower is connected with the clarification tank through the water pipe, the clarification tank is connected with the circulating water tank, and the lower end part of the circulating water tank is connected with the spraying device through a circulating water pump;
the temperature in the pyrolysis furnace ranges from 800 ℃ to 1000 ℃, and the temperature in the quenching tower is less than 100 ℃.
2. The zero-discharge treatment device for waste water of garbage pyrolysis process according to claim 1, wherein: a grab bucket is arranged above the pyrolysis furnace, and the grab bucket moves from the garbage pool to the pyrolysis furnace.
3. The zero-discharge treatment device for waste water of garbage pyrolysis process according to claim 2, wherein: the bottom of the pyrolysis furnace is communicated with the slag pit, and the stirring device is arranged at the bottom of the pyrolysis furnace.
4. The zero-discharge treatment device for waste water of garbage pyrolysis process according to claim 1, wherein: the lower end part of the quenching tower is funnel-shaped.
5. The zero-discharge treatment device for waste water of garbage pyrolysis process according to claim 1, wherein: the deacidification device is connected with a drain pipe, deacidification wastewater circulates in the drain pipe, and the deacidification device is connected with a circulating water tank through the drain pipe.
6. The zero-discharge treatment device for waste water of garbage pyrolysis process according to claim 1, wherein: the bottom of the clarification tank is connected with a drain pipe through a sludge pump, the drain pipe is connected with a plate-and-frame filter press, and a sludge storage hopper is arranged below the plate-and-frame filter press.
7. The zero-discharge treatment device for waste water of garbage pyrolysis process according to claim 1, wherein: the spraying devices are arranged in the quenching tower in a step shape from top to bottom, and the spraying direction of the spraying devices is downward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320136711.6U CN219709165U (en) | 2023-01-16 | 2023-01-16 | Zero-discharge treatment device for waste water of garbage pyrolysis process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320136711.6U CN219709165U (en) | 2023-01-16 | 2023-01-16 | Zero-discharge treatment device for waste water of garbage pyrolysis process |
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| Publication Number | Publication Date |
|---|---|
| CN219709165U true CN219709165U (en) | 2023-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320136711.6U Active CN219709165U (en) | 2023-01-16 | 2023-01-16 | Zero-discharge treatment device for waste water of garbage pyrolysis process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219709165U (en) |
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2023
- 2023-01-16 CN CN202320136711.6U patent/CN219709165U/en active Active
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