CN203613059U - Multiple-effect evaporation treatment device for alkali-contained waste water with high COD (chemical oxygen demand) - Google Patents
Multiple-effect evaporation treatment device for alkali-contained waste water with high COD (chemical oxygen demand) Download PDFInfo
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- CN203613059U CN203613059U CN201320636367.3U CN201320636367U CN203613059U CN 203613059 U CN203613059 U CN 203613059U CN 201320636367 U CN201320636367 U CN 201320636367U CN 203613059 U CN203613059 U CN 203613059U
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- Prior art keywords
- alkali
- waste water
- effect evaporation
- alkali liquor
- surge tank
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- 239000002351 wastewater Substances 0.000 title claims abstract description 42
- 238000001704 evaporation Methods 0.000 title claims abstract description 33
- 230000008020 evaporation Effects 0.000 title claims abstract description 29
- 239000000126 substance Substances 0.000 title abstract description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title abstract 2
- 229910052760 oxygen Inorganic materials 0.000 title abstract 2
- 239000001301 oxygen Substances 0.000 title abstract 2
- 239000003513 alkali Substances 0.000 claims abstract description 72
- 239000007788 liquid Substances 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000006200 vaporizer Substances 0.000 claims description 18
- 238000009833 condensation Methods 0.000 claims description 9
- 230000005494 condensation Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 abstract description 17
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 abstract description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 239000002699 waste material Substances 0.000 abstract description 7
- 238000003889 chemical engineering Methods 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000011084 recovery Methods 0.000 abstract 1
- 238000004065 wastewater treatment Methods 0.000 abstract 1
- 239000012071 phase Substances 0.000 description 26
- 238000000926 separation method Methods 0.000 description 6
- 230000007613 environmental effect Effects 0.000 description 5
- 239000007791 liquid phase Substances 0.000 description 5
- AMIMRNSIRUDHCM-UHFFFAOYSA-N Isopropylaldehyde Chemical compound CC(C)C=O AMIMRNSIRUDHCM-UHFFFAOYSA-N 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 4
- 208000035126 Facies Diseases 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- AVERNHDYEFYHIV-UHFFFAOYSA-N dodecan-5-ol Chemical group CCCCCCCC(O)CCCC AVERNHDYEFYHIV-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- MFBOGIVSZKQAPD-UHFFFAOYSA-M sodium butyrate Chemical class [Na+].CCCC([O-])=O MFBOGIVSZKQAPD-UHFFFAOYSA-M 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The utility model belongs to the field of chemical engineering, and particularly relates to a multi-effect evaporation treatment device for alkali-contained waste water with high COD (chemical oxygen demand). The device comprises a condensed alkali-contained waste water tank, a primary evaporator and a secondary evaporator which are sequentially connected through pipelines, wherein tops of the primary evaporator and the secondary evaporator are connected with a buffer tank through a first gas-phase pipe; the top of the buffer tank is connected with a water stripper through a second gas-phase pipe; the bottom of the buffer tank is connected with the secondary evaporator through a U-shaped liquid pipe; and the bottom of the secondary evaporator is connected with an alkali liquor recovery tank through a concentrated alkali liquor pipe. The multiple-effect evaporation process is successfully applied to the alkali-contained waste water treatment of an octanol production device, the gas-liquid entrainment phenomenon of the multiple-effect evaporation process is eliminated, environment-friendly accidents caused by the fact that waste water subjected to steam stripping treatment exceeds the standard are prevented, the delivery alkali liquor concentration is increased, the delivery alkali liquor amount is decreased, and the receiving unit load is reduced; and with the adoption of the multi-effect evaporation treatment device for the alkali-contained waste water with high COD, the high-concentration alkali liquor is recycled very well, the waste is prevented, and the production cost is reduced.
Description
Technical field
The utility model chemical field, is specifically related to the multiple-effect evaporation treatment unit of a kind of high COD containing alkali waste water.
Background technology
Produce in the process of octanol at butyl octanol unit and octanol isobutyric aldehyde device, can produce the alkali waste water that contains of a part of high COD in the octenal condensation stage.High COD is a great problem of puzzlement and restriction containing the processing of alkali waste water, especially do not solve that alkali lye in multiple-effect evaporation technique is carried secretly and the problem that fluctuates before, domestic majority mixes in bunker coal to be burnt, owing to containing a large amount of aldehyde, alcohol and Sodium propanecarboxylates, very big to environmental hazard after burning, and more serious to boiler corrosion.Present Domestic multi-effect evaporating device, because the existence of entrained liquid causes frequent fluctuation, causes externally discharged waste water COD to exceed standard often, and alkali lye can not get well concentrated, sends alkali lye amount outside large, and recycle of alkali liquor processed in units expense is high, pressure is large.
Current domestic multiple-effect evaporation is processed containing alkali waste water technique, and in surge tank, liquid phase is all the top that produces static pressure flow back into secondary evaporimeter by difference of altitude.The method existing problems of this reply entrained liquid are: when double effect evaporator steam output larger, when entrained liquid is more, secondary evaporimeter produces gas phase can directly enter surge tank along surge tank reflux pipeline, cause surge tank to include alkali lye and cannot be back to secondary evaporimeter mutually, but directly brought into the follow-up stripping stage by I and II vaporizer gas phase, cause stripping stage externally discharged waste water COD severe overweight, and alkali lye cannot obtain fine concentrated.
Before existing multi-effect evaporating device, there is following problem: 1, multiple-effect evaporation driving is extremely difficult, often occurs that alkali lye is brought into the situation in stripping stage, causes stripping externally discharged waste water COD to exceed standard; 2, qualified for guaranteeing externally discharged waste water COD, can only reduce a secondary evaporimeter quantity of steam and reduce entrained liquid.Preventing from being with aspect liquid effect bad but reduce quantity of steam, and after reducing quantity of steam, alkali lye cannot finely concentrate, it is 2～3%(m/m that condensation produces concentration of lye), after multiple-effect evaporation, only can be concentrated to 7% and send alkali lye outside.Because concentration of lye is too low, cause alkali lye recruiting unit load too high, processing costs is high, pressure is large.
Utility model content
For the deficiencies in the prior art, the purpose of this utility model is to provide the multiple-effect evaporation treatment unit of a kind of high COD containing alkali waste water, multiple-effect evaporation technique is successfully applied to Octanol production device containing alkali waste water processing, eliminate multiple-effect evaporation technique entrained liquid phenomenon, preventing that stripping from disposing of sewage to exceed standard causes environmental protection accident, raising is sent concentration of lye outside, is reduced and send alkali lye amount reduction recruiting unit load outside, avoids waste and has reduced cost.
High COD described in the utility model is containing the multiple-effect evaporation treatment unit of alkali waste water, comprise that the condensation connecting successively by pipeline is containing alkali waste water pond, one-level vaporizer and secondary evaporimeter, the top of one-level vaporizer and secondary evaporimeter is all connected surge tank by the first gas phase pipe, the top of surge tank connects water stripper by the second gas phase pipe, the bottom of surge tank connects secondary evaporimeter by liquid line, and liquid line is U-shaped tube shape.Secondary evaporimeter bottom connects recycle of alkali liquor pond by concentrated alkali liquor pipe.
High COD is successively entered in one-level vaporizer and secondary evaporimeter concentration and evaporation by condensation containing alkali waste water pond containing alkali waste water, the gas phase being evaporated enters surge tank through the first gas phase pipe, the gas phase being evaporated and the liquid phase of carrying secretly are carried out gas-liquid separation in surge tank, gas phase after separation enters water stripper through the second gas phase pipe, remove organism, outer row after reduction COD; The bottom of surge tank connects secondary evaporimeter by liquid line, and the liquid after discrete turns back in secondary evaporimeter by liquid line, and the alkali lye producing in secondary evaporimeter enters recycle of alkali liquor pond through concentrated alkali liquor pipe and reclaims processing.
One-level vaporizer and secondary evaporimeter heat and will concentrate and evaporate the organism in waste water containing alkali waste water waste water, and one-level vaporizer and secondary evaporimeter, for series connection is used, share a surge tank.In surge tank, the gas phase being evaporated from one-level vaporizer and secondary evaporimeter and the liquid phase that enters surge tank due to entrained liquid are carried out gas-liquid separation; Surge tank gas phase out becomes containing organism but alkali free high-COD waste water after cooling, enters follow-up water stripping process, removes organism, reduces COD, controls COD and reaches below 200mg/l, the rear outer row in 6.0≤PH≤9.5.In the liquid that one-level vaporizer and secondary evaporimeter are carried secretly out, owing to containing a large amount of alkali, can not enter water stripper, need turn back in secondary evaporimeter by the liquid line of surge tank bottom.Liquid line is U-shaped tube shape, makes to form between surge tank and secondary evaporimeter one section of fluid-tight, rather than directly through type connects.Because the secondary evaporimeter generation gas phase that exists of fluid-tight and resistance can, again along the liquid line surge tank of falling refunds, not enter surge tank but directly walk the first gas phase pipe that resistance is less, directly eliminate the problem of multiple-effect evaporation process gas facies tract alkali lye.
The advantage that multiple-effect evaporation is processed alkali waste is that safety and environmental protection is pollution-free, and has recycled well high-concentration alkali liquor, has reduced cost.Current safety environmental protection, energy-saving and emission-reduction have become the most important thing in chemical process.Adopt high COD described in the utility model containing after the multiple-effect evaporation treatment unit of alkali waste water, multiple-effect evaporation technique is successfully come into operation in Chemical Manufacture, and patent technique is simple, cost of investment is low, and successful is applied in Octanol production very easily afterwards.
The utility model, by input simply effective, lower cost, makes multi-effect evaporating device can be successfully applied to condensation containing alkali waste water processing.The application that facts have proved this patent makes the multi-effect evaporating device can smooth running, and externally discharged waste water COD is completely up to standard, and alkali lye is concentrated to 30% effectively, more than reducing the alkali lye amount of sending outside 300kg/h, has reduced production cost and the pressure of recycle of alkali liquor unit.
The about 2000kg/h of the raw waste lye of existing butyl octanol unit and octanol isobutyric aldehyde device condensation common property, after multiple-effect evaporation is processed, still have at least 1000kg/h waste lye to send outside, and concentration of lye is lower, often can carry secretly and cause externally discharged waste water to exceed standard seriously because of alkali lye.Use device described in the utility model can make the concentration of sending alkali lye outside reach 30%, send alkali lye amount outside substantially below 300kg/h, and multiple-effect evaporation operates steadily, steam is carried externally discharged waste water and is no longer occurred carrying because of alkali lye exceeding standard of causing secretly, and recycle well high-concentration alkali liquor, prevent waste, reduced cost.
Compared with prior art, the utlity model has following advantage:
(1) multiple-effect evaporation technique is successfully applied to Octanol production device containing alkali waste water processing, eliminate multiple-effect evaporation technique entrained liquid phenomenon, preventing that stripping from disposing of sewage to exceed standard causes environmental protection accident, improves to send concentration of lye outside, reduce and send alkali lye amount outside and reduce recruiting unit's load.
(2) the utility model is successfully applied to multiple-effect evaporation technique in Chemical Manufacture and goes, to processing containing alkali waste water of producing in Octanol production.Recycle well high-concentration alkali liquor, simply effective, prevent waste, reduce cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-contains alkali waste water pond, 2-one-level vaporizer, 3-the first gas phase pipe, 4-surge tank, 5-the second gas phase pipe, 6-water stripper, 7-liquid line, 8-concentrates alkali liquor pipe, 9-recycle of alkali liquor pond, 10-secondary evaporimeter.
Embodiment
Below in conjunction with embodiment, the utility model is described further.
Embodiment
Comprise that the condensation connecting successively by pipeline is containing alkali waste water pond 1, one-level vaporizer 2 and secondary evaporimeter 10, the top of one-level vaporizer 2 and secondary evaporimeter 10 is all connected surge tank 4 by the first gas phase pipe 3, the top of surge tank 4 connects water stripper 6 by the second gas phase pipe 5, the bottom of surge tank 4 connects secondary evaporimeter 10 by liquid line 7, and liquid line 7 is U-shaped tube shape.Secondary evaporimeter 10 bottoms connect recycle of alkali liquor pond 9 by concentrated alkali liquor pipe 8.
High COD is successively entered in one-level vaporizer 2 and secondary evaporimeter 10 concentration and evaporation by condensation containing alkali waste water pond 1 containing alkali waste water, the gas phase being evaporated enters surge tank 4 through the first gas phase pipe 3, the gas phase being evaporated and the liquid phase of carrying secretly are carried out gas-liquid separation in surge tank 4, gas phase after separation enters water stripper 6 through the second gas phase pipe 5, remove organism, outer row after reduction COD; The bottom of surge tank 4 connects secondary evaporimeter 10 by liquid line 7, and the liquid after discrete turns back in secondary evaporimeter 10 by liquid line 7, and the alkali lye producing in secondary evaporimeter 10 enters recycle of alkali liquor pond 9 through concentrated alkali liquor pipe 8 and reclaims processing.
One-level vaporizer 2 and secondary evaporimeter 10 heat and will concentrate and evaporate the organism in waste water containing alkali waste water waste water, and one-level vaporizer 2 and secondary evaporimeter 10, for series connection is used, share a surge tank 4.In surge tank 4, the gas phase being evaporated from one-level vaporizer 2 and secondary evaporimeter 10 and the liquid phase that enters surge tank 4 due to entrained liquid are carried out gas-liquid separation; Surge tank 4 gas phase out becomes containing organism but alkali free high-COD waste water after cooling, enters follow-up water stripping process, removes organism, reduces COD, controls COD and reaches below 200mg/l, the rear outer row in 6.0≤PH≤9.5.In the liquid that one-level vaporizer 2 and secondary evaporimeter 10 are carried secretly out, owing to containing a large amount of alkali, can not enter water stripper 6, need turn back in secondary evaporimeter by the liquid line 7 of surge tank 4 bottoms.Liquid line 7 is U-shaped tube shape, makes to form between surge tank 4 and secondary evaporimeter 10 one section of fluid-tight, rather than directly through type connects.Exist secondary evaporimeter 10 to produce gas phase can, again along liquid line 7 surge tanks of falling refunds 4, not enter surge tank 4 but directly walk the first gas phase pipe 3 that resistance is less, directly eliminate the problem of multiple-effect evaporation process gas facies tract alkali lye due to fluid-tight and resistance.
Claims (2)
1. a high COD is containing the multiple-effect evaporation treatment unit of alkali waste water, it is characterized in that: comprise that the condensation connecting successively by pipeline is containing alkali waste water pond (1), one-level vaporizer (2) and secondary evaporimeter (10), the top of one-level vaporizer (2) and secondary evaporimeter (10) is all connected surge tank (4) by the first gas phase pipe (3), the top of surge tank (4) connects water stripper (6) by the second gas phase pipe (5), the bottom of surge tank (4) connects secondary evaporimeter (10) by liquid line (7), and liquid line (7) is U-shaped tube shape.
2. high COD according to claim 1, containing the multiple-effect evaporation treatment unit of alkali waste water, is characterized in that: secondary evaporimeter (10) bottom connects recycle of alkali liquor pond (9) by concentrated alkali liquor pipe (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320636367.3U CN203613059U (en) | 2013-10-15 | 2013-10-15 | Multiple-effect evaporation treatment device for alkali-contained waste water with high COD (chemical oxygen demand) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320636367.3U CN203613059U (en) | 2013-10-15 | 2013-10-15 | Multiple-effect evaporation treatment device for alkali-contained waste water with high COD (chemical oxygen demand) |
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| Publication Number | Publication Date |
|---|---|
| CN203613059U true CN203613059U (en) | 2014-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320636367.3U Expired - Lifetime CN203613059U (en) | 2013-10-15 | 2013-10-15 | Multiple-effect evaporation treatment device for alkali-contained waste water with high COD (chemical oxygen demand) |
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| Country | Link |
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| CN (1) | CN203613059U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104843909A (en) * | 2014-12-12 | 2015-08-19 | 重庆摩尔水处理设备有限公司 | Ultra-pure water treatment system |
| CN106629937A (en) * | 2015-11-02 | 2017-05-10 | 中国石油化工股份有限公司 | Waste water processing technology and system |
| CN108069482A (en) * | 2016-11-11 | 2018-05-25 | 中国石油化工股份有限公司抚顺石油化工研究院 | A kind of waste water treatment process and system |
| CN108069479A (en) * | 2016-11-11 | 2018-05-25 | 中国石油化工股份有限公司抚顺石油化工研究院 | A kind of wastewater treatment method and system |
-
2013
- 2013-10-15 CN CN201320636367.3U patent/CN203613059U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104843909A (en) * | 2014-12-12 | 2015-08-19 | 重庆摩尔水处理设备有限公司 | Ultra-pure water treatment system |
| CN104843909B (en) * | 2014-12-12 | 2017-01-25 | 重庆摩尔水处理设备有限公司 | Ultra-pure water treatment system |
| CN106629937A (en) * | 2015-11-02 | 2017-05-10 | 中国石油化工股份有限公司 | Waste water processing technology and system |
| CN106629937B (en) * | 2015-11-02 | 2020-05-19 | 中国石油化工股份有限公司 | Wastewater treatment process and system |
| CN108069482A (en) * | 2016-11-11 | 2018-05-25 | 中国石油化工股份有限公司抚顺石油化工研究院 | A kind of waste water treatment process and system |
| CN108069479A (en) * | 2016-11-11 | 2018-05-25 | 中国石油化工股份有限公司抚顺石油化工研究院 | A kind of wastewater treatment method and system |
| CN108069482B (en) * | 2016-11-11 | 2020-01-10 | 中国石油化工股份有限公司抚顺石油化工研究院 | Wastewater treatment process and system |
| CN108069479B (en) * | 2016-11-11 | 2020-01-10 | 中国石油化工股份有限公司抚顺石油化工研究院 | Wastewater treatment method and system |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140528 |