CN211619986U - VOCs separation and collection system containing volatile gas industrial wastewater - Google Patents
VOCs separation and collection system containing volatile gas industrial wastewater Download PDFInfo
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- CN211619986U CN211619986U CN202020142469.XU CN202020142469U CN211619986U CN 211619986 U CN211619986 U CN 211619986U CN 202020142469 U CN202020142469 U CN 202020142469U CN 211619986 U CN211619986 U CN 211619986U
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Abstract
A VOCs separation and collection system containing volatile gas industrial wastewater belongs to the technical field of industrial environmental protection. The utility model provides a current sewage cooling process to containing volatile gas such as chemical industry gas making circulating water, papermaking middle section water easily cause environmental pollution's problem. The side part of each stage of flash chamber is correspondingly communicated with a condenser, the condensers are sequentially communicated with one another, one condenser positioned at the edge is communicated with the inlet end of a cooling tower through a cooling water pipeline, the other condenser positioned at the edge is communicated with the outlet end of the cooling tower through another cooling water pipeline, a cooling water circulating pump is arranged on the other cooling water pipeline, the VOCs removing chamber is communicated with the VOCs tail end processing system through a gas outlet and a primary gas removing pipeline, and the vacuum pump is arranged on the primary gas removing pipeline; the plurality of condensers are correspondingly communicated with the vacuum pump through secondary gas removal pipelines; and the wastewater after the gradual flash evaporation by the vertical flash evaporator is discharged through a wastewater outlet.
Description
Technical Field
The utility model relates to a VOCs separation and collection system that contains gaseous industrial waste water of volatility belongs to industry environmental protection technical field.
Background
Volatile Organic Compounds (VOCs) are a highly toxic and severely polluting chemical substance, which mostly contain H2S and other inorganic components with high content, for example, a certain amount of paper-making wastewater is generated in the production process of a paper mill, and the part of the wastewater needs to be sent to a sewage treatment plant for treatment, but due to the limitation of the production process, the temperature of the wastewater is about 40-60 ℃ when the wastewater is discharged, which is higher than the acceptable temperature of the treatment plant (biochemical bacteria can not survive in the environment of more than 40 ℃), so the wastewater needs to be cooled, the existing process usually adopts a cooling tower heat dissipation mode, but because the wastewater contains a large amount of hydrogen sulfide (H)2S), hydrogen sulfide (H) in the process of heat dissipation of the cooling tower2S) can be volatilized into the atmospheric environment to cause environmental pollution, even acid rain, and meanwhile, the direct dissipation of part of heat also causes energy waste.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a solve present sewage cooling process to containing volatile gaseous to chemical industry gas making circulating water, papermaking middle section water etc. and easily cause environmental pollution's problem, and then provide a VOCs separation and collection system who contains volatile gaseous industrial waste water.
The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be:
a VOCs separating and collecting system for industrial wastewater containing volatile gases comprises a vertical flash evaporator, a vacuum pump, a VOCs terminal treatment system and a cooling tower, wherein the vertical flash evaporator is a vertical sealed container, the top end of the vertical flash evaporator is provided with a wastewater inlet and a gas outlet, the bottom end of the vertical flash evaporator is provided with a wastewater outlet, the vertical flash evaporator is internally divided into at least three chambers by at least two porous clapboards in turn from top to bottom, the uppermost chamber is a VOCs removing chamber, other chambers are a primary flash chamber, a secondary flash chamber and an N-stage flash chamber in turn from top to bottom, a wastewater source is communicated to the wastewater inlet through a wastewater water supply pipeline,
the side part of each stage of flash chamber is correspondingly communicated with a condenser, a plurality of condensers are sequentially communicated and arranged, one condenser positioned at the edge is communicated with the inlet end of the cooling tower through a cooling water pipeline, the other condenser positioned at the edge is communicated with the outlet end of the cooling tower through another cooling water pipeline, and the other cooling water pipeline is provided with a cooling water circulating pump,
the VOCs removing chamber is communicated with the VOCs tail end processing system through a gas outlet and a primary gas removing pipeline, and the vacuum pump is arranged on the primary gas removing pipeline; the plurality of condensers are correspondingly communicated with the vacuum pump through secondary gas removal pipelines; and the wastewater after the gradual flash evaporation by the vertical flash evaporator is discharged through a wastewater outlet.
Further, a waste water supply pump is arranged on the waste water supply pipeline.
Further, the waste water outlet is communicated to a waste water source or a waste water treatment system through a waste water return pipeline.
Further, a wastewater water-returning pump is arranged on the wastewater water-returning pipeline.
Further, the cooling tower is replaced by a hot user, the cooling water pipeline is replaced by an intermediate water pipeline, and the cooling water circulating pump is replaced by an intermediate water circulating pump.
Compared with the prior art, the utility model has the following effect:
can solve chemical industry gas making circulating water, papermaking middle section water etc. and contain the gaseous sewage cooling problem of volatility through this application, also avoided the gaseous excessive atmosphere of VOCs simultaneously in scattering.
Drawings
Fig. 1 is a schematic system structure of the present application.
Detailed Description
The first embodiment is as follows: the embodiment is described by combining figure 1, the VOCs separating and collecting system of the industrial wastewater containing volatile gas comprises a vertical flash evaporator, a vacuum pump 2-4, a VOCs end treatment system 6 and a cooling tower 5, wherein the vertical flash evaporator is a vertical sealed container, the top end of the vertical flash evaporator is provided with a wastewater inlet and a gas outlet, the bottom end of the vertical flash evaporator is provided with a wastewater outlet, the vertical flash evaporator is internally divided into at least three chambers by at least two porous clapboards from top to bottom in turn, the uppermost chamber is a VOCs removing chamber 3-1, other chambers are a primary flash chamber 3-2, a secondary flash chamber 3-3 and an N-level flash chamber from top to bottom in turn, a wastewater source 1 is communicated to the wastewater inlet through a wastewater water supply pipeline,
the side part of each stage of flash chamber is correspondingly communicated with a condenser 4-1, a plurality of condensers 4-1 are sequentially communicated, one condenser 4-1 positioned at the edge is communicated with the inlet end of a cooling tower 5 through a cooling water pipeline, the other condenser 4-1 positioned at the edge is communicated with the outlet end of the cooling tower 5 through another cooling water pipeline, and the other cooling water pipeline is provided with a cooling water circulating pump 2-3,
the VOCs removing chamber 3-1 is communicated with the VOCs tail end processing system 6 through a gas outlet and a primary gas removing pipeline, and the vacuum pump 2-4 is arranged on the primary gas removing pipeline; the condensers 4-1 are correspondingly communicated with the vacuum pumps 2-4 through secondary gas removal pipelines; and the wastewater after the gradual flash evaporation by the vertical flash evaporator is discharged through a wastewater outlet. The VOCs end processing system 6 employed in the present application is prior art and will not be described herein. The vertical flash evaporator is also in the prior art, and for example, an evaporator described in the issued direct heat machine patent technology with the application number of 201410239541.X can be adopted, except that the number of flash evaporation chambers in the vertical flash evaporator in the application is at least two, and the more the number of flash evaporation stages is, the better the removal effect on VOCs in the wastewater is.
Wastewater is led into a VOCs removing chamber 3-1 from a wastewater source 1, most of the non-condensable VOCs gas is led out to a VOCs tail end treatment system 6 through a vacuum pump 2-4 for professional treatment, and meanwhile, the stability of subsequent flash evaporation and heat exchange can be ensured;
after passing through the VOCs removing chamber 3-1, the wastewater carrying a smaller amount of VOCs gas enters a primary flash chamber 3-2 downwards for flash evaporation and temperature reduction, the flash evaporated negative pressure steam enters a condenser 4-1 correspondingly communicated with the primary flash chamber for condensation and heat release, similarly, the wastewater after flash evaporation and temperature reduction of the primary flash chamber 3-2 continues to enter a secondary flash chamber 3-3 for flash evaporation and temperature reduction, and the flash evaporated negative pressure steam enters a condenser 4-1 correspondingly communicated with the secondary flash chamber for condensation and heat release;
the cooling water circulating pump 2-3 sends the cooling water in the cooling tower 5 into the condenser 4-1, and the heat is carried by the cooling water and sent to the cooling tower 5 through a cooling water pipeline for circulation to be dissipated;
the condensers 4-1 are correspondingly communicated with the vacuum pumps 2-4 through secondary gas removal pipelines, and most of the Volatile Organic Compounds (VOCs) which cannot be condensed in the condensers 4-1 are led out to the VOCs terminal treatment system 6 through the vacuum pumps 2-4 for professional treatment, so that the content of the VOCs in the wastewater flowing out after passing through the vertical flash evaporator is as low as possible, and the pollution to the environment in the sewage cooling process is effectively reduced.
And a wastewater water supply pump 2-1 is arranged on the wastewater water supply pipeline. By the design, the wastewater in the wastewater source 1 can conveniently enter the vertical flash evaporator.
The waste water outlet is communicated to a waste water source 1 or a waste water treatment system through a waste water return pipeline. By the design, when the wastewater outlet is communicated with the wastewater source 1, the wastewater source 1 and the vertical flash evaporator form a closed-loop system, so that the wastewater is recycled, and meanwhile, the energy is saved and the environment is protected.
And a wastewater water outlet pump 2-2 is arranged on the wastewater water outlet pipeline. The design is convenient for the wastewater to circularly return to the wastewater source 1.
The cooling tower 5 is replaced by a hot user, the cooling water pipeline is replaced by an intermediate water pipeline, and the cooling water circulating pump 2-3 is replaced by an intermediate water circulating pump. By the design, the intermediary water circulating pump sends intermediary water in the heat consumer into the condenser 4-1 to exchange heat with negative pressure steam, and heat is carried by the intermediary water and is circularly sent to the heat consumer through the intermediary water pipeline for heating, so that the heat-exchange type solar water heater has economic and environmental-protection double benefits. Meanwhile, the working environment of the staff of the paper mill and the living environment of surrounding residents are improved.
Claims (5)
1. The utility model provides a VOCs separation collecting system who contains gaseous industrial waste water of volatility which characterized in that: the device comprises a vertical flash evaporator, a vacuum pump (2-4), a VOCs terminal treatment system (6) and a cooling tower (5), wherein the vertical flash evaporator is a vertical sealed container, the top end of the vertical flash evaporator is provided with a wastewater inlet and a gas outlet, the bottom end of the vertical flash evaporator is provided with a wastewater outlet, the vertical flash evaporator is internally divided into at least three chambers by at least two porous partition plates in turn from top to bottom, the uppermost chamber is a VOCs removing chamber (3-1), other chambers are a primary flash chamber (3-2), a secondary flash chamber (3-3) and an N-grade flash chamber in turn from top to bottom, a wastewater source (1) is communicated with the wastewater inlet through a wastewater water supply pipeline,
the side part of each stage of flash chamber is correspondingly communicated with a condenser (4-1), a plurality of condensers (4-1) are sequentially communicated and arranged, one condenser (4-1) positioned at the edge is communicated with the inlet end of a cooling tower (5) through a cooling water pipeline, the other condenser (4-1) positioned at the edge is communicated with the outlet end of the cooling tower (5) through another cooling water pipeline, and the other cooling water pipeline is provided with a cooling water circulating pump (2-3),
the VOCs removing chamber (3-1) is communicated with the VOCs tail end processing system (6) through a gas outlet and a primary gas removing pipeline, and the vacuum pump (2-4) is arranged on the primary gas removing pipeline; the condensers (4-1) are correspondingly communicated with the vacuum pumps (2-4) through secondary gas removal pipelines; and the wastewater after the gradual flash evaporation by the vertical flash evaporator is discharged through a wastewater outlet.
2. The system for separating and collecting VOCs from industrial waste water containing volatile gases as claimed in claim 1, wherein: a wastewater feed pump (2-1) is arranged on the wastewater feed pipeline.
3. A system for separating and collecting VOCs from industrial waste water containing volatile gases as claimed in claim 1 or 2, wherein: the waste water outlet is communicated to a waste water source (1) or a waste water treatment system through a waste water return pipeline.
4. A system for separating and collecting VOCs from industrial waste water containing volatile gases as claimed in claim 3, wherein: and a wastewater water outlet pump (2-2) is arranged on the wastewater water outlet pipeline.
5. The system for separating and collecting VOCs containing industrial wastewater of volatile gases as claimed in claim 1, 2 or 4, wherein: the cooling tower (5) is replaced by a hot user, the cooling water pipeline is replaced by an intermediate water pipeline, and the cooling water circulating pump (2-3) is replaced by an intermediate water circulating pump.
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| CN202020142469.XU CN211619986U (en) | 2020-01-22 | 2020-01-22 | VOCs separation and collection system containing volatile gas industrial wastewater |
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| CN202020142469.XU CN211619986U (en) | 2020-01-22 | 2020-01-22 | VOCs separation and collection system containing volatile gas industrial wastewater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111099677A (en) * | 2020-01-22 | 2020-05-05 | 哈尔滨工大金涛科技股份有限公司 | VOCs separation and collection system containing volatile gas industrial wastewater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111099677A (en) * | 2020-01-22 | 2020-05-05 | 哈尔滨工大金涛科技股份有限公司 | VOCs separation and collection system containing volatile gas industrial wastewater |
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