CN105819529A - Vacuum flash concentration technology for wastewater - Google Patents
Vacuum flash concentration technology for wastewater Download PDFInfo
- Publication number
- CN105819529A CN105819529A CN201610317098.2A CN201610317098A CN105819529A CN 105819529 A CN105819529 A CN 105819529A CN 201610317098 A CN201610317098 A CN 201610317098A CN 105819529 A CN105819529 A CN 105819529A
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- Prior art keywords
- waste water
- vacuum
- flash
- wastewater
- water
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- 239000002351 wastewater Substances 0.000 title claims abstract description 93
- 238000005516 engineering process Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 33
- 238000009833 condensation Methods 0.000 claims abstract description 8
- 230000005494 condensation Effects 0.000 claims abstract description 8
- 238000011084 recovery Methods 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 238000007701 flash-distillation Methods 0.000 claims description 23
- 238000000746 purification Methods 0.000 claims description 11
- 238000009834 vaporization Methods 0.000 claims description 10
- 230000008016 vaporization Effects 0.000 claims description 10
- 239000000498 cooling water Substances 0.000 claims description 6
- 239000006260 foam Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000000126 substance Substances 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000004065 wastewater treatment Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract 1
- 230000001988 toxicity Effects 0.000 abstract 1
- 231100000419 toxicity Toxicity 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 14
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 229910017112 Fe—C Inorganic materials 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 231100000086 high toxicity Toxicity 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000909 electrodialysis Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/06—Flash evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/004—Seals, connections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/007—Modular design
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/06—Pressure conditions
- C02F2301/063—Underpressure, vacuum
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention discloses a vacuum flash concentration technology for wastewater, and relates to the field of chemical technology application and chemical machines. The technology mainly includes the three technological processes of wastewater heat exchange, wastewater high-vacuum concentration and flash gas condensation recovery. According to the technology, an environment-friendly wastewater treatment technology large in capacity, low in cost and high in efficiency is realized, the production and operation benefit of greatly-reduced wastewater treatment cost and the social benefit of low environmental risk are achieved, the defects of high treatment cost and high environmental risk for wastewater high in COD content, high in toxicity and poor in biodegradability are overcome, and the clean production level of enterprises is increased.
Description
Technical field
The present invention relates to chemical process application and chemical machinery field, be specifically related to a kind of waste water vacuum flashing concentration technology.
Background technology
Most domestic treatment of Organic Wastewater producer uses burning method, catalytic oxidation, Fe-C Micro Electrolysis Method etc. at present, and part producer uses the technical finesse such as electrodialysis, supercritical oxidation organic wastewater in a small amount.But the burning method equipment investment that most enterprises use is big, and processing cost is high, and surrounding is made an extremely bad impression by the flue gas of emptying, is unfavorable for sustainable development；Catalytic oxidation falls from favor because of reasons such as catalyst are expensive, severe reaction conditions, long processing period efficiency are low again；First Fe-C Micro Electrolysis Method need to carry out acidification to waste water, and subsequent technique is complicated, it is difficult to process a large amount of waste water.
Summary of the invention
It is an object of the invention to provide a kind of waste water vacuum flashing concentration technology, realize a large amount of, low cost, high efficiency waste water process friendly process, obtain benefits of production and management and the social benefit of low environment risk that cost for wastewater treatment is greatly reduced, to overcome the high disposal cost of waste water of current high COD content, high toxicity, biodegradability difference, the shortcoming of high environmental risk, improve enterprise clean production level.
To achieve these goals, the technical scheme that the present invention takes is a kind of waste water vacuum flashing concentration technology of being provided, including following processing step:
(1) waste water heat exchanging process: the waste water in wastewater trough is delivered to secondary waste water heat exchanger and primary wastewater heat exchanger by waste water pump after being pressurizeed, waste water walks heat exchanger tube pass, steam is entered heat exchanger shell pass by steam control valve, steam control valve and flash tank waste water inlet temperature interlocked control, waste water and steam carry out heat exchange in heat exchanger, after reaching required temperature, enter flash tank, complete the technical process of waste water heat exchange；
(2) waste water fine vacuum concentration process: equipped with spray equipment and filler in flash tank, under vacuum, the water in waste water is at filling surface rapid vaporization, and the flashed vapour of vaporization enters demister from flash tank gas phase mouth, carries secretly reducing thing foam；Remaining waste water is progressively concentrated due to the vaporization of moisture, flow to wastewater trough 1 through flash tank feed opening, and delivers to density wastewater processing system continuously through waste water pump 2；
(3) flashed vapour condensation removal process: the gas phase flashed vapour after demister sequentially enters primary flash condenser, two-stage flash condenser and vacuum purification surge tank；Heat exchanger shell pass is made in flash distillation leave with rage, and recirculated cooling water is entered flash condenser tube side by circulating cooling water inlet；Condensed flash distillation water enters flash distillation Water Sproading groove, and the flash distillation water after recovery is optional according to the actual requirements to be returned Commercial cultivation or delivers to processing system；Fixed gas enters vacuum purification surge tank, and after fixed gas absorbs in vacuum purification surge tank, the fixed gas reaching emission request is discharged by vacuum pump outlet；Wherein, for ensureing that flash distillation is expected smooth and easy under water and vacuum stable, between condenser and accumulator tank, there is suitable pressure differential.
Preferably, described waste water heat exchanging process is to utilize pipe heat exchanger as heat-exchange apparatus, by heat source mediums such as steam, waste water is carried out Multi-stage heating.
Preferably, it is provided with metal gauze in described demister.
Preferably, in described flashed vapour condensation removal process, flash distillation water forms fluid-tight to flash distillation Water Sproading groove blanking end of line.
Preferably, described demister diameter is gas phase pipe 3～5 times.
Using technical scheme, waste water heat exchange process process is to utilize pipe heat exchanger as heat-exchange apparatus, by heat source mediums such as steam waste water carries out Multi-stage heating, and the heating-up temperature needed for determining according to flash distillation amount；Waste water vacuum flashing concentration technology process be flash tank as main body consersion unit, after heating, waste water is by being pumped into flash tank, under vacuum the water rapid vaporization in waste water, and the Organic substance of difficult volatilization is stayed in waste water, to reach the effect that waste water high-efficiency concentrates；Being provided with metal gauze in demister, demister diameter is gas phase pipe 3～5 times, effectively removes entrained drip in flash steam, reduces thing foam and carries secretly；Flashed vapour condensation recovery process process is to utilize pipe heat exchanger as heat-exchange apparatus the flashed vapour through high-efficiency foam remover, by cooling mediums such as recirculated waters, flashed vapour is carried out multi-stage condensing, condensed water is delivered to processing system or returns Chemical Manufacture recycling, fixed gas continues through vacuum purification surge tank, discharges from vacuum system；Present invention achieves a large amount of, low cost, high efficiency waste water process friendly process, obtain benefits of production and management and the social benefit of low environment risk that cost for wastewater treatment is greatly reduced, overcome current high COD content, high toxicity, the high disposal cost of waste water of biodegradability difference, the shortcoming of high environmental risk, improve enterprise clean production level.
Accompanying drawing illustrates:
Fig. 1 is the flow chart of waste water vacuum flashing concentration technology.
Wherein, 1-wastewater trough, 2-waste water pump, after 3-concentrates, waste water sends valve, 4-secondary waste water heat exchanger, 5-primary wastewater heat exchanger outside, 6-steam control valve, 7-flash tank, 8-demister, 9-primary flash condenser, 10-two-stage flash condenser, 11-vacuum purification surge tank, 12-vacuum pump, 13-flash distillation Water Sproading groove.
Detailed description of the invention
Below by specific embodiment and combine a kind of waste water vacuum flashing concentration technology in the accompanying drawing narration present invention.Unless stated otherwise, technological means used in the present invention is method known in those skilled in the art.It addition, embodiment is interpreted as illustrative, and unrestricted the scope of the present invention, the spirit and scope of the invention are limited only by the claims that follow.To those skilled in the art, on the premise of without departing substantially from spirit and scope of the present invention, the various changes or the change that carry out the material component in these embodiments and consumption fall within protection scope of the present invention.
Embodiment 1:
(1) waste water heat exchanging process: the waste water in wastewater trough 1 is delivered to secondary waste water heat exchanger 4 and primary wastewater heat exchanger 5 by waste water pump 2 after being pressurizeed, waste water walks heat exchanger tube pass, steam is entered heat exchanger shell pass by steam control valve 6, steam control valve 6 and flash tank 7 waste water inlet temperature interlocked control, waste water and steam carry out heat exchange in heat exchanger, after reaching required temperature, enter flash tank 7, complete the technical process of waste water heat exchange；
(2) waste water fine vacuum concentration process: equipped with spray equipment and filler in flash tank 7, under vacuum, the water in waste water is at filling surface rapid vaporization, and the flashed vapour of vaporization enters demister 8 from flash tank 7 gas phase mouth, carries secretly reducing thing foam；Remaining waste water is progressively concentrated due to the vaporization of moisture, and after being provided with concentration between waste water pump 2 and secondary waste water heat exchanger 4, waste water sends valve 3 outside, flow to wastewater trough 1 through flash tank 7 feed opening, and delivers to density wastewater processing system continuously through waste water pump 2；
(3) flashed vapour condensation removal process: the gas phase flashed vapour after demister 8 sequentially enters primary flash condenser 9, two-stage flash condenser 10 and vacuum purification surge tank 11；Heat exchanger shell pass is made in flash distillation leave with rage, and recirculated cooling water is entered flash condenser tube side by circulating cooling water inlet；Condensed flash distillation water enters flash distillation Water Sproading groove 13, and the flash distillation water after recovery is optional according to the actual requirements to be returned Commercial cultivation or delivers to processing system；Fixed gas enters vacuum purification surge tank 11, and after fixed gas absorbs in vacuum purification surge tank 11, the fixed gas reaching emission request is exported discharge by vacuum pump 12；Wherein, for ensureing that flash distillation is expected smooth and easy under water and vacuum stable, to have suitable pressure differential between condenser and accumulator tank, in described flashed vapour condensation removal process, flash distillation water forms fluid-tight to flash distillation Water Sproading groove 13 blanking end of line.
In the present embodiment, described waste water heat exchanging process is to utilize pipe heat exchanger as heat-exchange apparatus, by heat source mediums such as steam, waste water is carried out Multi-stage heating.
In the present embodiment, being provided with metal gauze in described demister 8, described demister 8 diameter is gas phase pipe 3～5 times, effectively removes entrained drip in flash steam, reduces thing foam and carries secretly.
Obviously the present invention implements and is not subject to the restrictions described above; if the improvement of the various unsubstantialities that the method design that have employed the present invention is carried out with technical scheme; or the most improved design by the present invention and technical scheme directly apply to other occasion, all within protection scope of the present invention.
Claims (5)
1. a waste water vacuum flashing concentration technology, it is characterised in that comprise the steps:
(1) waste water heat exchanging process: the waste water in wastewater trough 1 is delivered to secondary waste water heat exchanger 4 and primary wastewater heat exchanger 5 by waste water pump 2 after being pressurizeed, waste water walks heat exchanger tube pass, steam is entered heat exchanger shell pass by steam control valve 7, steam control valve 7 and flash tank 7 waste water inlet temperature interlocked control, waste water and steam carry out heat exchange in heat exchanger, after reaching required temperature, enter flash tank 7, complete the technical process of waste water heat exchange；
(2) waste water fine vacuum concentration process: equipped with spray equipment and filler in flash tank 7, under vacuum, the water in waste water is at filling surface rapid vaporization, and the flashed vapour of vaporization enters demister 8 from flash tank gas phase mouth, carries secretly reducing thing foam；Remaining waste water is progressively concentrated due to the vaporization of moisture, flow to wastewater trough 1 through flash tank feed opening, and delivers to density wastewater processing system continuously through waste water pump 2；
(3) flashed vapour condensation removal process: the gas phase flashed vapour after demister 8 sequentially enters primary flash condenser 9, two-stage flash condenser 10 and vacuum purification surge tank 11；Heat exchanger shell pass is made in flash distillation leave with rage, and recirculated cooling water is entered flash condenser tube side by circulating cooling water inlet；Condensed flash distillation water enters flash distillation Water Sproading groove 13, and the flash distillation water after recovery is optional according to the actual requirements to be returned Commercial cultivation or delivers to processing system；Fixed gas enters vacuum purification surge tank 11, and after fixed gas absorbs in vacuum purification surge tank 11, the fixed gas reaching emission request is exported discharge by vacuum pump 12；Wherein, for ensureing that flash distillation is expected smooth and easy under water and vacuum stable, between condenser and accumulator tank, there is suitable pressure differential.
A kind of waste water vacuum flashing concentration technology the most according to claim 1, it is characterised in that: described waste water heat exchanging process is to utilize pipe heat exchanger as heat-exchange apparatus, by heat source mediums such as steam, waste water is carried out Multi-stage heating.
A kind of waste water vacuum flashing concentration technology the most according to claim 1, it is characterised in that: it is provided with metal gauze in described demister.
A kind of waste water vacuum flashing concentration technology the most according to claim 1, it is characterised in that: in described flashed vapour condensation removal process, flash distillation water forms fluid-tight to flash distillation Water Sproading groove 13 blanking end of line.
A kind of waste water vacuum flashing concentration technology the most according to claim 3, it is characterised in that: described demister diameter is gas phase pipe 3～5 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610317098.2A CN105819529A (en) | 2016-05-13 | 2016-05-13 | Vacuum flash concentration technology for wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610317098.2A CN105819529A (en) | 2016-05-13 | 2016-05-13 | Vacuum flash concentration technology for wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105819529A true CN105819529A (en) | 2016-08-03 |
Family
ID=56530754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610317098.2A Pending CN105819529A (en) | 2016-05-13 | 2016-05-13 | Vacuum flash concentration technology for wastewater |
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| CN (1) | CN105819529A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111302417A (en) * | 2019-05-29 | 2020-06-19 | 哈尔滨工大金涛科技股份有限公司 | Industrial wastewater temperature difference waste heat concentration device and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203307050U (en) * | 2013-07-22 | 2013-11-27 | 湖北宜化松滋肥业有限公司 | Device for preparing phosphoric acid through defoaming and defluorinating operation |
| CN203494190U (en) * | 2013-09-17 | 2014-03-26 | 湖北瑞隆石化设备有限公司 | Device for utilizing coal gasification waste water and waste heat, removing dust and saving water |
| US20140262736A1 (en) * | 2013-03-13 | 2014-09-18 | National Engineering Research Center of Drying Technology and Equipment | Method and device for recycling water vapor evaporated from coal drying with vacuum condensing process |
| CN104402159A (en) * | 2014-11-28 | 2015-03-11 | 浙江大学 | Plate type multistage flash evaporation desulfurization wastewater treatment and recovery device and method |
| CN104649498A (en) * | 2015-03-13 | 2015-05-27 | 佛山市德嘉电力环保科技开发有限公司 | Desulfurization wastewater evaporation technology and system |
-
2016
- 2016-05-13 CN CN201610317098.2A patent/CN105819529A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140262736A1 (en) * | 2013-03-13 | 2014-09-18 | National Engineering Research Center of Drying Technology and Equipment | Method and device for recycling water vapor evaporated from coal drying with vacuum condensing process |
| CN203307050U (en) * | 2013-07-22 | 2013-11-27 | 湖北宜化松滋肥业有限公司 | Device for preparing phosphoric acid through defoaming and defluorinating operation |
| CN203494190U (en) * | 2013-09-17 | 2014-03-26 | 湖北瑞隆石化设备有限公司 | Device for utilizing coal gasification waste water and waste heat, removing dust and saving water |
| CN104402159A (en) * | 2014-11-28 | 2015-03-11 | 浙江大学 | Plate type multistage flash evaporation desulfurization wastewater treatment and recovery device and method |
| CN104649498A (en) * | 2015-03-13 | 2015-05-27 | 佛山市德嘉电力环保科技开发有限公司 | Desulfurization wastewater evaporation technology and system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111302417A (en) * | 2019-05-29 | 2020-06-19 | 哈尔滨工大金涛科技股份有限公司 | Industrial wastewater temperature difference waste heat concentration device and method |
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| C06 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160803 |
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| RJ01 | Rejection of invention patent application after publication |