CN217479252U - Sewage zero-discharge control device of self-absorption type desulfurization system - Google Patents
Sewage zero-discharge control device of self-absorption type desulfurization system Download PDFInfo
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- CN217479252U CN217479252U CN202221095038.8U CN202221095038U CN217479252U CN 217479252 U CN217479252 U CN 217479252U CN 202221095038 U CN202221095038 U CN 202221095038U CN 217479252 U CN217479252 U CN 217479252U
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Abstract
The utility model discloses a self absorption formula desulfurization system sewage zero release controlling means, the device include desulfurizing tower, circulating water pond, concentrated pond, flue gas pipeline, evaporation pond, circulating water pump and sediment stuff pump, are provided with circulating water pond, flue gas pipeline and evaporation pond respectively in the desulfurizing tower outside, the bottom of desulfurizing tower is passed through the pipeline and is connected with the circulating water pond entry end, and the circulating water pond exit end is connected with the upper portion of desulfurizing tower through the pipeline of installing circulating water pump. The utility model discloses utilize the heat of flue gas itself in the flue gas pipeline to evaporate the moisture content in the sewage in the evaporating pond, get into the desulfurizing tower behind the flue gas pipeline behind the moisture content evaporation and carry out the desulfurization and spray the washing and purify, the pollution that waste heat, waste gas etc. of avoiding led to the fact the environment has reduced sewage treatment system and equipment simultaneously, reduces system and equipment investment, reduction system's working costs and labour cost.
Description
Technical Field
The utility model relates to a self-absorption formula desulfurization system sewage zero release controlling means belongs to sewage treatment technical field.
Background
In the aluminum electrolysis production process, because a large amount of anodes are consumed by electrochemical reaction, petroleum coke and asphalt are used as main raw materials for producing the anodes, and all the raw materials contain sulfur (generally 2-4%) in a certain proportion, sulfur dioxide is correspondingly generated in flue gas in the anode consumption process, desulfurization treatment is required in the flue gas treatment process, particularly, desulfurization waste water is generated in the wet desulfurization process, the waste water treatment becomes a difficult problem which troubles wet desulfurization purification, a large amount of equipment and personnel are required to be correspondingly added for treating the desulfurization waste water, and the investment and the cost of anode production are increased. If the sewage is not treated, secondary damage is caused to the environment, waste gas pollution is converted into waste water pollution, and the industry development urgently needs a method for treating the sewage at low cost.
SUMMERY OF THE UTILITY MODEL
The utility model provides a to prior art not enough, the utility model provides a self-absorption formula desulfurization system sewage zero release controlling means can realize the problem of desulfurization sewage discharge with ultralow cost solution.
The technical scheme of the utility model is realized like this: the utility model provides a zero release controlling means of self absorption formula desulfurization system sewage, includes desulfurizing tower, circulation water tank, concentrated pond, flue gas pipeline, evaporation pond, circulating water pump and sediment stuff pump, is provided with circulation water tank, flue gas pipeline and evaporation pond respectively in the desulfurizing tower outside, the bottom of desulfurizing tower is passed through the pipeline and is connected with the circulation water tank entry end, and the pipeline that the circulation water tank exit end was through installing circulating water pump is connected with the upper portion of desulfurizing tower, and the bottom in circulation water tank is connected with the upper portion in concentrated pond through the pipeline of installing the sediment stuff pump simultaneously, and the pipeline that the lower part in concentrated pond was through installing the sediment stuff pump is connected with the evaporation pond, the evaporation pond is linked together with flue gas pipeline, and the other end and the desulfurizing tower of flue gas pipeline are linked together.
Further, the circulating water pond is including the reaction tank, aeration tank, settling basin and the clean water basin that link together in proper order, the reaction tank is connected with the alkali device that adds, and the bottom of settling basin is connected with dewatering system through the pipeline of installing the sediment stuff pump, and dewatering system passes through the pipeline to be connected with the top of settling basin, and the settling basin is connected with the upper portion of concentrated pond through the pipeline of installing the sediment stuff pump simultaneously, the clean water basin is connected with the upper portion of desulfurizing tower through the pipeline of installing circulating water pump.
Furthermore, the alkali adding device comprises a lime bin and a stirring barrel connected with the bottom of the lime bin, a bag-type dust remover is installed at the top of the lime bin, a feeding pipe is connected with the top of the lime bin, a first water replenishing pipe is connected with the top of the stirring barrel, and the bottom of the stirring barrel is connected with the reaction tank through a pipeline.
Furthermore, a vacuum pump is also arranged on the pipeline between the clean water tank and the desulfurizing tower.
Furthermore, a second water replenishing pipe is connected to the clean water tank.
Further, the top of the desulfurizing tower is connected with a cleaning water tank through a pipeline provided with a clean water pump.
Further, a smoke exhaust fan is installed on the smoke pipeline.
Furthermore, the top of the evaporation tank is of an open structure, and the top of the evaporation tank is communicated with the flue gas pipeline.
Since the technical scheme is used, the utility model has the advantages that: the utility model discloses utilize the moisture content of the heat of flue gas itself in the flue gas pipeline to sewage in the evaporating pond to evaporate, get into the desulfurizing tower behind the moisture content evaporation and carry out the desulfurization and spray the washing and purify, the pollution that the waste heat of avoiding, waste gas etc. caused the environment has reduced sewage treatment system and equipment simultaneously, reduction system and equipment investment, reduction system working costs and labour cost. Compare with utilizing other heat energy to carry out sewage treatment system and equipment, reduced system and equipment investment equally, reduced system operation energy consumption and labour cost, accord with china's energy-conservation, emission reduction, consumption reduction target, improved the utilization efficiency of system's heat energy, consequently the utility model discloses there are fine spreading value and use value.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Description of the reference numerals: 1-a desulfurizing tower, 2-a circulating water tank, 201-a reaction tank, 202-an aeration tank, 203-a settling tank, 204-a clean water tank, 3-a concentration tank, 4-a flue gas pipeline, 5-an evaporation tank, 6-a dehydration system, 7-a circulating water pump, 8-a slurry pump, 9-a vacuum pump, 10-a clean water pump, 11-a cleaning water tank, 12-a lime bin, 13-a stirring barrel, 14-a bag-type dust remover, 15-a first water replenishing pipe, 16-a feeding pipe and 17-a second water replenishing pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
The embodiment of the utility model provides a: please refer to fig. 1, the utility model discloses a self absorption formula desulfurization system sewage zero release controlling means, including desulfurizing tower 1, circulating water pond 2, concentrated pond 3, flue gas pipeline 4, evaporation tank 5, circulating water pump 7 and slurry pump 8, be provided with circulating water pond 2, flue gas pipeline 4 and evaporation tank 5 respectively in the desulfurizing tower 1 outside, the bottom of desulfurizing tower 1 is passed through the pipeline and is connected with 2 entry ends in circulating water pond, and 2 exit ends in circulating water pond are connected with desulfurizing tower 1's upper portion through the pipeline of installing circulating water pump 7, and circulating water pond 2's bottom is connected with the upper portion of concentrated pond 3 through the pipeline of installing slurry pump 8 simultaneously, and the lower part of concentrated pond 3 is connected with evaporation tank 5 through the pipeline of installing slurry pump 8, evaporation tank 5 is linked together with flue gas pipeline 4, and the other end of flue gas pipeline 4 is linked together with desulfurizing tower 1. The concentrating tank 3 adopts a plain roofing as a top cover, and the top cover is 1.5-2 m away from the ground.
Further, circulating water pond 2 is including connecting gradually reaction tank 201, aeration tank 202, settling basin 203 and clean water basin 204 together, reaction tank 201 with add the alkali device and be connected, the bottom of settling basin 203 is connected with dewatering system 6 through the pipeline of installing sediment stuff pump 8, dewatering system 6 passes through the pipeline and is connected with the top of settling basin 203, and settling basin 203 is connected with the upper portion of concentrated pond 3 through the pipeline of installing sediment stuff pump 8 simultaneously, clean water basin 204 is connected with the upper portion of desulfurizing tower 1 through the pipeline of installing circulating water pump 7.
Furthermore, the alkali adding device comprises a lime bin 12 and a stirring barrel 13 connected with the bottom of the lime bin 12, a bag-type dust collector 14 is installed at the top of the lime bin 12, a feeding pipe 16 is connected with the top of the lime bin 12, a first water replenishing pipe 15 is connected with the top of the stirring barrel 13, and the bottom of the stirring barrel 13 is connected with the reaction tank 201 through a pipeline. Adding alkali, namely firstly pumping lime into a lime bin 12 through a feeding pipe 16 by a lime tank truck, then slowly guiding the lime in the lime bin 12 into a stirring barrel 13, simultaneously adding water through a first water supplementing pipe 15, stirring while adding water, and finally guiding the stirred lime slurry into a reaction tank 201.
Furthermore, a vacuum pump 9 is further installed on the pipeline between the clean water tank 204 and the desulfurizing tower 1, and air in the pipeline is pumped by the vacuum pump 9, so that the air is prevented from entering the desulfurizing tower 1 and affecting the desulfurizing effect.
Furthermore, the clean water tank 204 is connected to a second water replenishing pipe 17, and clean water can be replenished into the clean water tank 204 through the second water replenishing pipe 17 to adjust the PH value in the clean water tank 204.
Further, the top of the desulfurizing tower 1 is connected with a cleaning water tank 11 through a pipeline provided with a clean water pump 10, and is used for cleaning the desulfurizing tower 1.
Further, a smoke exhaust fan 18 is installed on the smoke pipeline 4, so that the smoke conveying efficiency is improved.
Further, the top of the evaporation tank 5 is of an open structure, and the top of the evaporation tank is communicated with the flue gas pipeline 4, so that water in the sewage in the evaporation tank 5 can be evaporated by using the heat of the flue gas in the flue gas pipeline 4, and the evaporated water enters the desulfurizing tower through the flue gas pipeline 4 to be treated.
When the self-absorption desulfurization system sewage zero-discharge control device is used for desulfurization treatment of aluminum electrolysis wastewater, washing slurry in the desulfurization tower 1 is sprayed and washed and then flows back to the circulating slurry tank 2, the washing slurry in the circulating tank 2 is pumped into the desulfurization tower 1 through the circulating water pump 7 for spraying, washing and desulfurization, when the impurity concentration content of the slurry in the circulating tank 2 reaches 5 percent, the slurry is pumped into the concentration tank 3 through the slurry pump 8, the slurry is precipitated and concentrated, the upper low-concentration solution in the concentration tank 3 is pumped back to the circulating tank 2 through the slurry pump 8, the lower high-concentration solution in the concentration tank 3 is pumped into the evaporation tank 5 through the slurry pump 8, because the top of the evaporation tank 5 is communicated with the flue gas pipeline 4, the moisture in the sewage in the evaporation tank 5 is evaporated by using the heat of the flue gas in the flue gas pipeline 4, and the evaporated moisture enters the desulfurization tower 1 through the flue gas pipeline 4 for desulfurization, spraying, washing and purification, the aim of zero discharge of sewage is fulfilled.
And the calcium sulfate with the crystal water settled in the circulating water tank 2 is dehydrated through a dehydration system 6, and the calcium sulfate after dehydration can be sold. Therefore, the utility model provides a wet flue gas desulfurization system sewage treatment and the environmental pollution problem of emission, realize low-cost and environmental protection's dual target.
Claims (8)
1. The utility model provides a self absorption formula desulfurization system sewage zero release controlling means, includes desulfurizing tower (1), circulating water pond (2), concentrated pond (3), flue gas pipeline (4), evaporation pond (5), circulating water pump (7) and sediment stuff pump (8), its characterized in that: be provided with circulating water pond (2), flue gas pipeline (4) and evaporation pond (5) respectively in the desulfurizing tower (1) outside, the bottom of desulfurizing tower (1) is passed through the pipeline and is connected with circulating water pond (2) entry end, and circulating water pond (2) exit end is connected with the upper portion of desulfurizing tower (1) through the pipeline of installing circulating water pump (7), and the bottom of circulating water pond (2) is connected with the upper portion of concentrated pond (3) through the pipeline of installing sediment stuff pump (8) simultaneously, and the lower part of concentrated pond (3) is connected with evaporation pond (5) through the pipeline of installing sediment stuff pump (8), evaporation pond (5) are linked together with flue gas pipeline (4), and the other end and desulfurizing tower (1) of flue gas pipeline (4) are linked together.
2. The device of claim 1 for controlling zero discharge of wastewater from an absorption desulfurization system, comprising: circulating water pond (2) are including consecutive reaction tank (201), aeration tank (202), settling basin (203) and clean water basin (204) that link together, reaction tank (201) with add the alkali device and be connected, the bottom of settling basin (203) is connected with dewatering system (6) through the pipeline of installing sediment stuff pump (8), dewatering system (6) are connected with the top of settling basin (203) through the pipeline, and settling basin (203) are connected with the upper portion of concentrated pond (3) through the pipeline of installing sediment stuff pump (8) simultaneously, clean water basin (204) are connected with the upper portion of desulfurizing tower (1) through the pipeline of installing circulating water pump (7).
3. The device of claim 2, wherein the device is characterized in that: the alkali adding device comprises a lime bin (12) and a stirring barrel (13) connected with the bottom of the lime bin (12), a bag-type dust collector (14) is installed at the top of the lime bin (12), a feeding pipe (16) is connected to the top of the lime bin (12), a first water replenishing pipe (15) is connected to the top of the stirring barrel (13), and the bottom of the stirring barrel (13) is connected with a reaction tank (201) through a pipeline.
4. The device of claim 2, wherein the device is characterized in that: and a vacuum pumping pump (9) is also arranged on the pipeline between the clean water tank (204) and the desulfurizing tower (1).
5. The device of claim 2, wherein the device is characterized in that: and a second water replenishing pipe (17) is connected to the clean water tank (204).
6. The device of claim 1 for controlling zero discharge of wastewater from an absorption desulfurization system, comprising: the top of the desulfurizing tower (1) is connected with a cleaning water tank (11) through a pipeline provided with a clean water pump (10).
7. The device of claim 1 for controlling zero discharge of wastewater from an absorption desulfurization system, comprising: and a smoke exhaust fan (18) is arranged on the smoke pipeline (4).
8. The device of claim 1 for controlling zero discharge of wastewater from an absorption desulfurization system, comprising: the top of the evaporation pool (5) is of an open structure, and the top of the evaporation pool is communicated with the flue gas pipeline (4).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2021226829219 | 2021-11-04 | ||
| CN202122682921 | 2021-11-04 |
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| CN217479252U true CN217479252U (en) | 2022-09-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115259508A (en) * | 2021-11-04 | 2022-11-01 | 贵阳铝镁设计研究院有限公司 | A self-absorption desulfurization system sewage zero discharge control device and control method |
| CN116440512A (en) * | 2022-10-13 | 2023-07-18 | 贵州省六盘水双元铝业有限责任公司 | Evaporation pool mechanism and waste heat utilization desulfurization wastewater zero discharge system using same |
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2022
- 2022-05-09 CN CN202221095038.8U patent/CN217479252U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115259508A (en) * | 2021-11-04 | 2022-11-01 | 贵阳铝镁设计研究院有限公司 | A self-absorption desulfurization system sewage zero discharge control device and control method |
| CN116440512A (en) * | 2022-10-13 | 2023-07-18 | 贵州省六盘水双元铝业有限责任公司 | Evaporation pool mechanism and waste heat utilization desulfurization wastewater zero discharge system using same |
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