CN102161534B - Device for processing dimethylamine exhaust gas and wastewater - Google Patents
Device for processing dimethylamine exhaust gas and wastewater Download PDFInfo
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- CN102161534B CN102161534B CN2011100278973A CN201110027897A CN102161534B CN 102161534 B CN102161534 B CN 102161534B CN 2011100278973 A CN2011100278973 A CN 2011100278973A CN 201110027897 A CN201110027897 A CN 201110027897A CN 102161534 B CN102161534 B CN 102161534B
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- dimethylamine
- stripping
- oxidation tank
- waste water
- emission
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Abstract
The invention discloses a device for processing dimethylamine exhaust gas and wastewater. A fan is respectively connected with a plurality of shower nozzles on the bottoms of a plurality of blowing oxidation cans; the bottom of each blowing oxidation can is externally connected with a water pump; the water pump is connected with an atomizing shower nozzle arranged in a spray tower on the upper part; the lower part of the blowing oxidation can is a dimethylamine solution cavity; the dimethylamine solution is discharged from the outlet on the top of the blowing oxidation can after being blown off by air; after the dimethylamine solution is cooled by a condenser and separated by a moisture separator, mixed gas enters a low-temperature plasma purifier to carry out purification and deodorization; and the purified air is discharged from a chimney via an induced draft fan. The device has the advantages that removal effect is above 90%, and the content of the discharged dimethylamine exhaust gas is low, thereby saving energy, reducing emission, and causing low energy consumption.
Description
Technical field
The present invention relates to a kind of waste gas and wastewater treatment equipment, particularly a kind of n n dimetylaniline waste gas and wastewater treatment equipment.
Background technology
Synthetic leather is claimed leatheroid again; In process of production; N DMF moves in the film process of surface treatment as surface treatment and double-layer fur wet method that solvent is widely used in synthetic leather, because DMF only as carrier solvent chemical reaction does not take place, all gets in the factory effluent.Most at present rectification method recovery DMF that adopt, still in removal process, DMF can react with water, generates n n dimetylaniline and formic acid.In addition, DMF self at high temperature also can decompose, and generates n n dimetylaniline and carbon monoxide.The n n dimetylaniline boiling point is low, volatile, soluble in water, and the intensive foul odour is arranged.Current domestic synthetic leather enterprise does not administer n n dimetylaniline basically, directly enters atmosphere, causes environmental pollution.Even handle, also be with n n dimetylaniline gas after condensation, send into boiler combustion; But it is immature at equipment, technology and process aspect; Can't reach environmental protection requirement, have its branch problem, cause the deterioration of Air quality equally to another kind of form pollutent.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of removal effect good, and energy consumption is low, the n n dimetylaniline waste gas and the wastewater treatment equipment of energy-saving and emission-reduction.
In order to solve above technical problem, the invention provides a kind of n n dimetylaniline waste gas and wastewater treatment equipment, a blower and pipeline is connected with several shower nozzles of a plurality of stripping oxidation tanks bottom respectively; Each outer water pump in stripping oxidation tank bottom; Water pump is connected with atomizer, and atomizer is in the spray column on top, and the bottom of stripping oxidation tank is the dimethylamine solution chamber; The solution that contains n n dimetylaniline is discharged from stripping oxidation tank top exit behind air stripping; After condensing surface cooling, moisture separator separated, mixed gas got into the low-temperature plasma cleaner and carries out the deodourizing processing, and purified gas is discharged from chimney by induced draft fan.
The top of said moisture separator is provided with the n n dimetylaniline detection probe, and detection probe is connected with micro-chip in the system of supervision of backstage, and micro-chip also is connected with the power module of alarm module, low-temperature plasma cleaner.
The inlet valve of said each stripping oxidation tank also is connected with the PH regulating tank.
Be provided with water circle device between said a plurality of stripping oxidation tank and condensing surface, the moisture separator.
The outer water pump of said each stripping oxidation tank also with recovery vehicle between the waste water basin be connected.
Principle of work of the present invention: to first stripping oxidation tank,, close the solution inlet port valve to specifying liquid level by water outlet pumping dimethylamine solution between recovery vehicle.Open the inlet valve of second stripping oxidation tank, begin into dimethylamine solution,, close the solution inlet port valve to specifying liquid level.By this technology, successively dimethylamine solution is sent into remaining stripping oxidation tank.The outer water pump of stripping oxidation tank is beaten the spray column to jar top with dimethylamine solution, and it is vaporific that the atomizer in the spray column is dispersed into dimethylamine solution fully, increased the gas-to-liquid contact area, makes air stripping become very convenient, improved the stripping rate.Blower fan is through being built in the equally distributed shower nozzle ejection air-flow of stripping oxidation tank bottom, and air-flow passes liquid layer to upper space, after two layers of spraying, is discharged by top exit again.
The expellant gas staple is n n dimetylaniline and water vapor, and stripping gas also contains a large amount of water vapors, is introduced into condensing surface, removes vapor condensation, and condensation is got off to contain the water of n n dimetylaniline and handled through recycle pump entering stripping jar again.Get into moisture separator then, the mixed gas that comes out from moisture separator gets into the low-temperature plasma cleaner.
Low-temperature plasma cleaner of the present invention; Plus high-pressure high frequency exchange current between electrode, the surface generates micro discharges, induces simultaneously and causes high electric field; The moment high energy that high frequency discharge produced can be opened the chemical bond of some obnoxious flavour molecules, makes it to be decomposed into simple substance atom or harmless molecule; High electric field impels the unbound electron in the discharge space to quicken; Electronics will be accelerated in electric field and obtain enough energy this moment, and excite, dissociates, dissociates, combines with the gas molecule bump or reaction such as combination again, the radical that generates many high-energy electrons, negative ions, excited state particle and have strong strong oxidizing property; These active particles and part foul smell molecular impact combine; Under electric field action, make the foul smell molecule be in excited state, the energy that obtains when the foul smell molecule is during greater than the bound energy of its molecular bond energy; The chemical bond rupture of foul smell molecule directly resolves into the simple substance atom or by the innocuous gas molecule of single atomic building; Produced simultaneously a large amount of OH, HO
2, O isoreactivity radical and the extremely strong O of oxidisability
3,, finally generate harmless product with obnoxious flavour molecule generation chemical reaction.Mixed gas is after the deodorizing of low-temperature plasma purification utensil is handled, and production concentration is extremely low, is discharged from chimney by induced draft fan, and expellant gas reaches national odorant pollutant emission standard GB14554-93 fully.
Superior effect of the present invention is:
1) the present invention handles n n dimetylaniline waste gas, and removal effect reaches more than 90%, and is low from the content of the n n dimetylaniline waste gas of chimney discharge by induced draft fan, reaches≤2mg/m
3
2) air stripping of the present invention depends on atomizer, has greatly increased the gas-to-liquid contact area, and stripping is seemed, and very easily, the decreasing ratio of n n dimetylaniline surpasses 90% in the dimethylamine waste water;
3) the present invention adopts the low-temperature plasma cleaner to carry out the deodorizing processing, meets the development trend of energy-saving and emission-reduction, and it is low to have energy consumption, handles advantage completely.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Label declaration among the figure
1-roots blower;
2-stripping oxidation tank; 201-shower nozzle;
202-atomizer; 203-spray column;
3-water pump; 4-condensing surface;
5-moisture separator; 6-detection probe;
7-low-temperature plasma cleaner; 8-induced draft fan;
9-chimney; 10-PH regulating tank;
11-waste water basin.
Embodiment
Below in conjunction with accompanying drawing, the present invention is done further description.
As shown in Figure 1; The invention provides a kind of dimethylamine waste water and emission-control equipment; One roots blower 1 is connected with two stripping oxidation tank 2 bottoms equally distributed hundreds of shower nozzles 201 respectively through pipeline, water pump 3 outside stripping oxidation tank 2 bottoms, and water pump 3 is connected with atomizer 202; Atomizer 202 is in the spray column 203 on top; The bottom of stripping oxidation tank 2 is the dimethylamine solution chamber, and the solution that contains n n dimetylaniline is discharged from stripping oxidation tank 2 top exits behind air stripping, after condensing surface 4 coolings, moisture separator 5 separate; Mixed gas gets into low-temperature plasma cleaner 7 and carries out twice deodourizing processing, and purified gas is discharged from chimney 9 by induced draft fan 8.
The top of said moisture separator 5 is provided with n n dimetylaniline detection probe 6, and detection probe 6 is connected with micro-chip in the system of supervision of backstage, and micro-chip also is connected with the power module of alarm module, low-temperature plasma cleaner 7.Under the normal operating conditions, n n dimetylaniline concentration is made as 0.5%.When n n dimetylaniline concentration reached 1%, micro-chip started alarm module and reports to the police; When n n dimetylaniline concentration reached 1.5%, micro-chip cut off the power module of low-temperature plasma cleaner automatically, and the while induced draft fan is full speed operation and combustion gas still.
The inlet valve of said each stripping oxidation tank 2 also is connected with PH regulating tank 10, when stripping, suitably adds NaOH control pH value, helps improving stripping efficient.
Be provided with water circle device between said a plurality of stripping oxidation tank 2 and condensing surface 4, the moisture separator 5.
The outer water pump 3 of said each stripping oxidation tank 2 also with recovery vehicle between waste water basin 11 be connected.Waste liquid in the stripping oxidation tank 2 is squeezed into the waste water basin 11 of adding the workshop with outer water pump 3; Contain a spot of n n dimetylaniline in the waste liquid in the waste water basin 11; Can suppress the carrying out of the DMF side reaction of rectifying tower, thereby the growing amount of n n dimetylaniline is significantly reduced, improve the yield of DMF.
Principle of work of the present invention: to first stripping oxidation tank 2,, close the solution inlet port valve to specifying liquid level by water outlet pumping dimethylamine solution between recovery vehicle.Open the inlet valve of second stripping oxidation tank 2, begin into dimethylamine solution,, close the solution inlet port valve to specifying liquid level.The outer water pump 3 of stripping oxidation tank 2 is beaten the spray column 203 to jar top with dimethylamine solution; It is vaporific that atomizer 202 in the spray column 203 is dispersed into dimethylamine solution fully; Increase the gas-to-liquid contact area, made air stripping become very convenient, improved the stripping rate.The equally distributed shower nozzle 201 ejection air-flows of roots blower 9.8Kpa pressure through being built in stripping oxidation tank 2 bottoms, air-flow passes liquid layer to upper space, after two layers of spraying, is discharged by top exit again.
The expellant gas staple is n n dimetylaniline and water vapor, and stripping gas also contains a large amount of water vapors, is introduced into condensing surface 4, removes vapor condensation, and the condensation water of n n dimetylaniline that gets off in addition gets into the stripping jar through recycle pump and handles.Get into moisture separator 5 then, the mixed gas that comes out from moisture separator gets into low-temperature plasma cleaner 7.
Low-temperature plasma cleaner 7 of the present invention; Plus high-pressure high frequency exchange current between electrode, the surface generates micro discharges, induces simultaneously and causes high electric field; The moment high energy that high frequency discharge produced can be opened the chemical bond of some obnoxious flavour molecules, makes it to be decomposed into simple substance atom or harmless molecule; High electric field impels the unbound electron in the discharge space to quicken; Electronics will be accelerated in electric field and obtain enough energy this moment, and excite, dissociates, dissociates, combines with the gas molecule bump or reaction such as combination again, the radical that generates many high-energy electrons, negative ions, excited state particle and have strong strong oxidizing property; These active particles and part foul smell molecular impact combine; Under electric field action, make the foul smell molecule be in excited state, the energy that obtains when the foul smell molecule is during greater than the bound energy of its molecular bond energy; The chemical bond rupture of foul smell molecule directly resolves into the simple substance atom or by the innocuous gas molecule of single atomic building; Produced simultaneously a large amount of OH, HO
2, O isoreactivity radical and the extremely strong O of oxidisability
3,, finally generate harmless product with obnoxious flavour molecule generation chemical reaction.Mixed gas is after the deodorizing of low-temperature plasma purification utensil is handled, and production concentration is extremely low, is discharged from chimney by induced draft fan, and expellant gas reaches national odorant pollutant emission standard GB14554-93 fully.
The present invention drops into the actual use of certain tannery, the environmental monitoring junction centre monitoring through the Wenzhou City, report as shown in the table,
It is splendid that the present invention removes the effect of n n dimetylaniline, handle thoroughly, and energy consumption is low, meets the development trend of energy-saving and emission-reduction.
Claims (5)
1. dimethylamine waste water and emission-control equipment; It is characterized in that: a blower and pipeline is connected with several shower nozzles of a plurality of stripping oxidation tanks bottom respectively, each outer water pump in stripping oxidation tank bottom, and water pump is connected with atomizer; Atomizer is in the spray column on top; The bottom of stripping oxidation tank is the dimethylamine solution chamber, and the solution that contains n n dimetylaniline is discharged from stripping oxidation tank top exit behind air stripping, after condensing surface cooling, moisture separator separate; Mixed gas gets into the low-temperature plasma cleaner and carries out the deodourizing processing, and cleaned air passes is discharged from chimney by induced draft fan.
2. dimethylamine waste water according to claim 1 and emission-control equipment; It is characterized in that: the top of said moisture separator is provided with the n n dimetylaniline detection probe; Detection probe is connected with micro-chip in the system of supervision of backstage, and micro-chip also is connected with the power module of alarm module, low-temperature plasma cleaner.
3. dimethylamine waste water according to claim 1 and emission-control equipment is characterized in that: the inlet valve of said each stripping oxidation tank also is connected with the pH regulator jar.
4. dimethylamine waste water according to claim 1 and emission-control equipment is characterized in that: be provided with water circle device between said a plurality of stripping oxidation tanks and condensing surface, the moisture separator.
5. dimethylamine waste water according to claim 1 and emission-control equipment is characterized in that: the outer water pump of said each stripping oxidation tank also with recovery vehicle between the waste water basin be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100278973A CN102161534B (en) | 2011-01-26 | 2011-01-26 | Device for processing dimethylamine exhaust gas and wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100278973A CN102161534B (en) | 2011-01-26 | 2011-01-26 | Device for processing dimethylamine exhaust gas and wastewater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102161534A CN102161534A (en) | 2011-08-24 |
| CN102161534B true CN102161534B (en) | 2012-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100278973A Expired - Fee Related CN102161534B (en) | 2011-01-26 | 2011-01-26 | Device for processing dimethylamine exhaust gas and wastewater |
Country Status (1)
| Country | Link |
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| CN (1) | CN102161534B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103203167A (en) * | 2012-10-26 | 2013-07-17 | 镇江铁科橡塑制品有限公司 | Exhaust gas recovery method |
| CN102989188A (en) * | 2012-10-26 | 2013-03-27 | 镇江铁科橡塑制品有限公司 | Exhaust gas recovery and rectification device |
| CN103496756B (en) * | 2013-10-14 | 2015-11-25 | 厦门理工学院 | Plasma body removes haloform devices and methods therefor in tap water |
| CN103657358A (en) * | 2013-12-06 | 2014-03-26 | 上海凯展环保科技有限公司 | Multifunctional waste gas treatment system |
| CN105934412B (en) * | 2015-05-28 | 2018-02-16 | 鹤山市新科达企业有限公司 | A kind of handling process of synthetic leather production waste water |
| CN106861404A (en) * | 2017-04-10 | 2017-06-20 | 黄嘉铭 | A kind of foul gas cleaning treatment system |
| CN108128971B (en) * | 2017-12-22 | 2023-05-23 | 杭州师范大学钱江学院 | Dithioformate-containing wastewater treatment device |
| CN111847744B (en) * | 2020-06-28 | 2023-12-05 | 魏毅宏 | System and method for treating high-salt organic wastewater in ion exchange resin production |
| CN113001814B (en) * | 2021-03-23 | 2022-09-06 | 山东道韵网业有限公司 | Reclaimed plastic particle granulator |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6468486B1 (en) * | 1999-09-06 | 2002-10-22 | Ebara Corporation | Process for treating exhaust gases containing nitrides |
| CN201999807U (en) * | 2011-01-26 | 2011-10-05 | 上海凯展环保科技有限公司 | Dimethylamine exhaust gas and waste water treatment device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0418983A (en) * | 1990-05-14 | 1992-01-23 | Naigai Kagaku Seihin Kk | Treatment of dimethylformamide |
| JP2001145819A (en) * | 1999-11-22 | 2001-05-29 | Kashiyama Kogyo Kk | Exhaust gas treating method and treating device |
| KR100474191B1 (en) * | 2001-02-02 | 2005-03-08 | 가부시키가이샤 닛폰 쇼쿠바이 | Process For Treating Waste Water and Apparatus Therefor |
-
2011
- 2011-01-26 CN CN2011100278973A patent/CN102161534B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6468486B1 (en) * | 1999-09-06 | 2002-10-22 | Ebara Corporation | Process for treating exhaust gases containing nitrides |
| CN201999807U (en) * | 2011-01-26 | 2011-10-05 | 上海凯展环保科技有限公司 | Dimethylamine exhaust gas and waste water treatment device |
Non-Patent Citations (2)
| Title |
|---|
| JP平4-18983A 1992.01.23 |
| JP特开2001-145819A 2001.05.29 |
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| CN102161534A (en) | 2011-08-24 |
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