CN201999807U - Dimethylamine exhaust gas and waste water treatment device - Google Patents
Dimethylamine exhaust gas and waste water treatment device Download PDFInfo
- Publication number
- CN201999807U CN201999807U CN2011200252305U CN201120025230U CN201999807U CN 201999807 U CN201999807 U CN 201999807U CN 2011200252305 U CN2011200252305 U CN 2011200252305U CN 201120025230 U CN201120025230 U CN 201120025230U CN 201999807 U CN201999807 U CN 201999807U
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- Prior art keywords
- dimethylamine
- stripping
- oxidation tank
- waste water
- emission
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Abstract
The utility model discloses a dimethylamine exhaust gas and waste water treatment device; a fan is connected with a plurality of sprayers at the bottoms of a plurality of blowoff oxidation tanks respectively through pipelines; the bottom of each blowoff oxidation tank is externally connected with a water pump which is connected with an atomization sprayer; the atomization sprayer is positioned in a spray tower at the upper part; a dimethylamine liquid cavity is arranged at the lower part of each blowoff oxidation tank; the liquid containing dimethylamine is discharged from the outlet at the top of the blowoff oxidation tank through air blowoff, after being cooled by a condenser and separated by a water-steam separator, the mixed air enters a low temperature plasma purifier for purification and deodorization treatment, and the purified air is discharged from a chimney by a draught fan. The device has the advantages that the removing efficiency reaches more than 90%, the discharged dimethylamine exhaust gas content is low, the energy is saved, the emission is reduced, and the energy consumption is low.
Description
Technical field
The utility model relates to a kind of waste gas and wastewater treatment equipment, particularly a kind of dimethylamine waste gas and wastewater treatment equipment.
Background technology
Synthetic leather claims leatheroid again, in process of production, dimethyl formamide 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 enters in the factory effluent.Most at present rectification method recovery DMF that adopt, still in removal process, DMF can react with water, generates dimethylamine and formic acid.In addition, DMF self at high temperature also can decompose, and generates dimethylamine and carbon monoxide.The dimethylamine boiling point is low, volatile, soluble in water, and the intensive foul odour is arranged.Current domestic synthetic leather enterprise does not administer dimethylamine basically, directly enters atmosphere, causes environmental pollution.Even handle, also be with dimethylamine 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.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of removal effect good, and energy consumption is low, the dimethylamine waste gas and the wastewater treatment equipment of energy-saving and emission-reduction.
In order to solve above technical problem, the utility model provides a kind of dimethylamine waste gas and wastewater treatment equipment, one 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, atomizer is in the spray column on top, the bottom of stripping oxidation tank is the dimethylamine solution chamber, the solution that contains dimethylamine is discharged from stripping oxidation tank top exit behind air stripping, cool off through condenser, after moisture separator separates, mixed gas enters 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 described moisture separator is provided with the dimethylamine 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 described each stripping oxidation tank also is connected with the PH regulating tank.
Be provided with water circle device between described a plurality of stripping oxidation tank and condenser, the moisture separator.
The outer water pump of described each stripping oxidation tank also with recovery vehicle between the waste water basin be connected.
Principle of work of the present utility model: 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 beats dimethylamine solution to jar top spray column, 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 by 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, is discharged by top exit after two layers of spraying again.
The expellant gas main component is dimethylamine and water vapor, and stripping gas also contains a large amount of water vapors, is introduced into condenser, and vapor condensation is removed, and the water that condensation gets off to contain dimethylamine enters the stripping jar by recycle pump and handles.Enter moisture separator then, the mixed gas that comes out from moisture separator enters the low-temperature plasma cleaner.
Low-temperature plasma cleaner of the present utility model, 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 with gas molecule bump, free, dissociate, in conjunction with or reaction such as combination again, generate many high-energy electrons, negative ions, excited state particle and free radical with strong strong oxidizing property, these active particles and the combination of part foul smell molecular impact, 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 free 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 utility model is:
1) the utility model is handled dimethylamine waste gas, and removal effect reaches more than 90%, and is low from the content of the dimethylamine waste gas of chimney discharge by induced draft fan, reaches≤2mg/m
3
2) air stripping of the present utility model depends on atomizer, has greatly increased the gas-to-liquid contact area, makes stripping seem very easy, and the decreasing ratio of dimethylamine surpasses 90% in the dimethylamine waste water;
3) the utility model 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 utility model;
The number in the figure explanation
1-roots blower;
2-stripping oxidation tank; 201-shower nozzle;
202-atomizer; 203-spray column;
3-water pump; 4-condenser;
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 utility model will be further described.
As shown in Figure 1, the utility model 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 by pipeline, water pump 3 outside stripping oxidation tank 2 bottoms, 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, the solution that contains dimethylamine is discharged from stripping oxidation tank 2 top exits behind air stripping, through condenser 4 coolings, after moisture separator 5 separates, mixed gas enters 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 described moisture separator 5 is provided with dimethylamine 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, dimethylamine concentration is made as 0.5%.When dimethylamine concentration reached 1%, micro-chip started alarm module and reports to the police; When dimethylamine 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 described each stripping oxidation tank 2 also is connected with PH regulating tank 10, suitably adds NaOH control pH value when stripping, helps improving stripping efficient.
Be provided with water circle device between described a plurality of stripping oxidation tank 2 and condenser 4, the moisture separator 5.
The outer water pump 3 of described 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 dimethylamine 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 dimethylamine is significantly reduced, improve the yield of DMF.
Principle of work of the present utility model: 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 beats dimethylamine solution to jar top spray column 203, 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 by being built in stripping oxidation tank 2 bottoms, air-flow passes liquid layer to upper space, is discharged by top exit after two layers of spraying again.
The expellant gas main component is dimethylamine and water vapor, and stripping gas also contains a large amount of water vapors, is introduced into condenser 4, and vapor condensation is removed, and the condensation water of dimethylamine that gets off in addition enters the stripping jar by recycle pump and handles.Enter moisture separator 5 then, the mixed gas that comes out from moisture separator enters low-temperature plasma cleaner 7.
Low-temperature plasma cleaner 7 of the present utility model, plus high-pressure high frequency exchange current between electrode, the surface generates micro discharges, induce simultaneously and cause 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 with gas molecule bump, free, dissociate, in conjunction with or reaction such as combination again, generate many high-energy electrons, negative ions, excited state particle and free radical with strong strong oxidizing property, these active particles and the combination of part foul smell molecular impact, 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 free 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 utility model drops into the actual use of certain tannery, through the monitoring of Wenzhou City's environmental monitoring junction centre, is reported as follows shown in the table,
The effect of the utility model removal dimethylamine is splendid, 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, 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, the solution that contains dimethylamine is discharged from stripping oxidation tank top exit behind air stripping, cool off through condenser, after moisture separator separates, mixed gas enters 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 described moisture separator is provided with the dimethylamine 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 described each stripping oxidation tank also is connected with the PH regulating tank.
4. dimethylamine waste water according to claim 1 and emission-control equipment is characterized in that: be provided with water circle device between described a plurality of stripping oxidation tanks and condenser, the moisture separator.
5. dimethylamine waste water according to claim 1 and emission-control equipment is characterized in that: the outer water pump of described 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 |
|---|---|---|---|
| CN2011200252305U CN201999807U (en) | 2011-01-26 | 2011-01-26 | Dimethylamine exhaust gas and waste water treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200252305U CN201999807U (en) | 2011-01-26 | 2011-01-26 | Dimethylamine exhaust gas and waste water treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201999807U true CN201999807U (en) | 2011-10-05 |
Family
ID=44702553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200252305U Expired - Lifetime CN201999807U (en) | 2011-01-26 | 2011-01-26 | Dimethylamine exhaust gas and waste water treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201999807U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102161534A (en) * | 2011-01-26 | 2011-08-24 | 上海凯展环保科技有限公司 | Device for processing dimethylamine exhaust gas and wastewater |
-
2011
- 2011-01-26 CN CN2011200252305U patent/CN201999807U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102161534A (en) * | 2011-01-26 | 2011-08-24 | 上海凯展环保科技有限公司 | Device for processing dimethylamine exhaust gas and wastewater |
| CN102161534B (en) * | 2011-01-26 | 2012-06-27 | 上海凯展环保科技有限公司 | Device for processing dimethylamine exhaust gas and wastewater |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111005 Effective date of abandoning: 20120627 |