CN107344065A - The technique and method of low-temperature plasma synergistic sulfuric acid crystallisation processing dimethylamine waste water, waste gas and stink - Google Patents
The technique and method of low-temperature plasma synergistic sulfuric acid crystallisation processing dimethylamine waste water, waste gas and stink Download PDFInfo
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- CN107344065A CN107344065A CN201610287880.4A CN201610287880A CN107344065A CN 107344065 A CN107344065 A CN 107344065A CN 201610287880 A CN201610287880 A CN 201610287880A CN 107344065 A CN107344065 A CN 107344065A
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- temperature plasma
- dimethylamine
- sulfuric acid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2247/00—Details relating to the separation of dispersed particles from gases, air or vapours by liquid as separating agent
- B01D2247/10—Means for removing the washing fluid dispersed in the gas or vapours
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/10—Single element gases other than halogens
- B01D2257/106—Ozone
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/12—Methods and means for introducing reactants
- B01D2259/124—Liquid reactants
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
Abstract
The invention discloses the technique and method of low-temperature plasma synergistic sulfuric acid crystallisation processing dimethylamine waste water, waste gas and stink.Waste water containing dimethylamine is sent into sulfuric acid and crystal system processing generation crystal salt（Transport and make dangerous waste processing）Contain dimethylamine exhaust gas caused by the waste gas containing dimethylamine come out from sulfuric acid with the sour neutralizing tank in crystal system and liquid absorption tank and production, reach clean emission after first order absorption tank, two level tourie, three-level tourie, one-level spray column, whizzer, charged cleaning system, one-level DBD Low Temperature Plasma Treatings system, two level DBD Low Temperature Plasma Treatings system, two level spray column, catalytic adsorption system together, realize the thorough removing completely of dimethylamine gas and stink.Present invention process method is advanced, can thoroughly remove dimethylamine stink, thoroughly purifies enterprise's production and circumstance, production equipment is simple and reliable, can effectively reduce production cost, improves the economic benefit of enterprise.
Description
Technical field
The invention belongs to dimethylamine waste water, waste gas and stink processing technology field in field of Environment Protection, and in particular to the technique and method of low-temperature plasma synergistic sulfuric acid crystallisation processing dimethylamine waste water, waste gas and stink.
Background technology
With the expansion and the continuous development of DMF recovery technologies of domestic synthetic leather scope of the enterprise, for energy-saving and raising enterprise competitiveness, DMF recovery technologies have been developed into by original single-action retracting device, economic benefits and social benefits retracting device and have saved DMF retracting device of the recovery technology as main flow using triple effect, quadruple effect now.But as rectification process flow is longer, heating-up temperature is higher, DMF decomposition amount is more, and resulting dimethylamine waste water, the discharge capacity of waste gas are increasing.Because the boiling point of dimethylamine is extremely low (boiling point is 6.9 DEG C under normal pressure), and stench is unpleasant, is directly emitted to cause factory's surrounding environment in air very big environmental pollution.
In the most DMF retracting devices run at present at home, in order to reduce equipment manufacturing cost and operation energy consumption, dimethylamine waste water, the processing equipment of waste gas are not included in technical flow design originally.Domestic processing dimethylamine mode is boiler burning method at present.
The shortcomings that boiler burning method is：
First, burning process has substantial amounts of dimethylamine gas to be directly discharged to further through boiler chimney in air.The dimethylamine of low concentration has the stench of rotten fishiness, and because the density of dimethylamine is compared with air weight, it is directly emitted in air, has obvious stench at the ground surface or lower wind direction in the range of 100~300 meters away from retracting device, have a strong impact on plant area's surrounding environment and the health of employee.
2nd, substantial amounts of dimethylamine agueous solution, which is injected directly into burner hearth, can increase the coal consumption of boiler, particularly large quantity of moisture and SO2、SO3Acid mist is formed Deng gas reaction, can aggravate, to boiler convection tube bank, the corrosion of flue, boiler safety hidden danger and the service life of serious curtailment boiler be present；
3rd, the amount of nitrogen oxides in boiler exhaust gas is added, need to pass through denitration process could qualified discharge；
4th, the method is confined to the small business of four wet three dry following production lines.
The content of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, there is provided a kind of high, stable, clean environment firendly the low-temperature plasma synergistic sulfuric acid crystallisation processing dimethylamine waste water of removal efficiency, the technique and method of waste gas.Dimethylamine waste water and waste gas are handled simultaneously in same technique, and waste gas secondary waste water is recycled, without the generation of secondary pollution.It is a kind of advanced handling process.Concrete technology is as shown in Figure 1
Advantages of the present invention
1st, eliminate using potential safety hazard existing for boiler burning dimethylamine waste water, waste gas；
2nd, using sulfuric acid（Without hydrochloric acid）As the absorbing liquid of dimethylamine, the service life of equipment substantially prolongs；
3rd, dimethylamine waste water, waste gas removal efficiency are greatly improved with the technique that sulfuric acid crystallization treatment is combined using low temperature plasma；
4th, the processing of dimethylamine waste water, waste gas is realized in same set of system.
Brief description of the drawings
Fig. 1 is that the low-temperature plasma synergistic sulfuric acid crystallisation in the present invention handles dimethylamine waste water, waste gas and the technique of stink and the process chart of method.
Embodiment
Referring to Fig. 1, the technique and method of low-temperature plasma synergistic sulfuric acid crystallisation processing dimethylamine waste water, waste gas and stink, following steps are specifically included：
Step 1：Waste water containing dimethylamine is sent into sulfuric acid and processing generation crystal salt in crystal system（Transport and make dangerous waste processing）Waste gas containing dimethylamine caused by the waste gas containing dimethylamine come out from sulfuric acid with the sour neutralizing tank in crystal system and liquid absorption tank and production pressurizes through blower fan, first order absorption tank, two level tourie, the bottom of three-level tourie are delivered to successively, gas is with the abundant haptoreaction of sulfuric acid from tank bottom uphill process, and 90% or so dimethylamine gas is absorbed in waste gas.
Step 2：From the waste gas of three-level tourie discharge, enter whizzer after one-level spray column spray, through filter screen, water smoke, oil vapour, dust in waste gas are attached to the outer surface of filter screen after strainer filtering, filter screen rotates at a high speed under the drive of motor, water smoke, oil vapour, the dust being attached on filter screen depart from filter screen outer surface and discharged from the leakage fluid dram of bottom under the influence of centrifugal force, and the waste gas after filtering further removes water smoke, oil vapour and dust in waste gas into charged cleaning system.
Step 3：The waste gas discharged from charged cleaning system cleaning system enters one-level DBD Low Temperature Plasma Treating systems.One-level DBD Low Temperature Plasma Treatings system oscillation boosting obtains high-frequency impulse electric field and produces high energy electron, and high energy electron directly bombards the dimethylamine gas in waste gas, most of dimethylamine gas is resolved into CO2、H2O and minimal amount of small molecule group.Waste gas after the processing of one-level DBD Low Temperature Plasma Treatings system, which enters in two level DBD Low Temperature Plasma Treating systems, further to be handled, and residual minim dimethylamine foul smell is decomposed completely.
Step 4：The waste gas discharged from two level DBD Low Temperature Plasma Treating systems, substantially just there is no a dimethylamine, but may some small molecule groups for not being completely broken down, then through this two level spray column spray system, further removing is totally.The waste water that this two level spray column comes out, rich in OH-, free radical, ozone isoreactivity material, there is very strong oxidisability, directly can be connected to one-level spray column through the circulatory system and be used for spray cleaning processing waste gas, realize energy-conserving and environment-protective, recycle.The waste gas come out by two level spray column enters back into catalytic adsorption system, and to go degassing sol, charged particle and residual ozone etc., the gas after the completion of purification realizes qualified discharge.
Described above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-described embodiment, and all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (7)
1. the technique and method of a kind of low-temperature plasma synergistic sulfuric acid crystallisation processing dimethylamine waste water, waste gas and stink, it is characterised in that the set technique specifically includes：Blower fan, liquid absorption tank, sour neutralizing tank, distillation still, first order absorption tank, two level tourie, three-level tourie, two level DBD Low Temperature Plasma Treating systems, one-level DBD Low Temperature Plasma Treating systems, the outlet of blower fan is connected with first order absorption tank, the rear portion of first order absorption tank is sequentially provided with two level tourie, three-level tourie, one-level spray column, whizzer, charged cleaning system, one-level DBD Low Temperature Plasma Treating systems, two level DBD Low Temperature Plasma Treating systems, two level spray column, catalytic adsorption processing system, liquid absorption tank is connected through sour absorption pump with sour neutralizing tank, sour neutralizing tank neutralizes pump with acid through pipeline and is connected, sour neutralizing tank is connected through pipeline with distillation still.
2. as claimed in claim 1, the technique and method of a kind of low-temperature plasma synergistic sulfuric acid crystallisation processing dimethylamine waste water, waste gas and stink, it is characterised in that the non-thermal plasma trap used in the technique is double-dielectric barrier discharge technology（DBD）.
It is 3. as claimed in claim 1, the technique and method of a kind of low-temperature plasma synergistic sulfuric acid crystallisation processing dimethylamine waste water, waste gas and stink, characterized in that, the DBD Low Temperature Plasma Treating system equipment bodies material used in the technique is 316L stainless steels.
It is 4. as claimed in claim 1, the technique and method of a kind of low-temperature plasma synergistic sulfuric acid crystallisation processing dimethylamine waste water, waste gas and stink, characterized in that, the charged cleaning system used in the technique is impulse electric corona plasma, its apparatus body material is 316L stainless steels.
5. as claimed in claim 1, the technique and method of a kind of low-temperature plasma synergistic sulfuric acid crystallisation processing dimethylamine waste water, waste gas and stink, it is characterised in that the I and II spray column used in the technique is clear water spray column.
6. as claimed in claim 1, the technique and method of a kind of low-temperature plasma synergistic sulfuric acid crystallisation processing dimethylamine waste water, waste gas and stink, it is characterised in that the catalytic adsorption tower used in the technique, its sorbing material are the activated carbon with catalytic property.
7. as claimed in claim 1, the technique and method of a kind of low-temperature plasma synergistic sulfuric acid crystallisation processing dimethylamine waste water, waste gas and stink, it is characterised in that the absorbing medium that the sulfuric acid crystallization treatment method used in the technique uses is sulfuric acid.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610287880.4A CN107344065A (en) | 2016-05-04 | 2016-05-04 | The technique and method of low-temperature plasma synergistic sulfuric acid crystallisation processing dimethylamine waste water, waste gas and stink |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610287880.4A CN107344065A (en) | 2016-05-04 | 2016-05-04 | The technique and method of low-temperature plasma synergistic sulfuric acid crystallisation processing dimethylamine waste water, waste gas and stink |
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| CN107344065A true CN107344065A (en) | 2017-11-14 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034187A (en) * | 1988-01-16 | 1989-07-26 | 广西河池师范专科学校 | Comprehensive treatment of tanning sewage by sulfuric acid process |
| JP2934861B1 (en) * | 1998-09-25 | 1999-08-16 | 工業技術院長 | Method for recovering hydrogen from aliphatic amine compounds |
| CN103111166A (en) * | 2013-03-08 | 2013-05-22 | 山东科源化工有限公司 | Method for treating 2, 4-D waste gas |
| CN103224260A (en) * | 2013-04-12 | 2013-07-31 | 苏州中色德源环保科技有限公司 | Wastewater treatment and recovery method |
| CN103768923A (en) * | 2014-02-12 | 2014-05-07 | 南京大学环境规划设计研究院有限公司 | Multi-stage gradient absorption device and device for low- and medium-concentration dimethylamine waste gas |
-
2016
- 2016-05-04 CN CN201610287880.4A patent/CN107344065A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034187A (en) * | 1988-01-16 | 1989-07-26 | 广西河池师范专科学校 | Comprehensive treatment of tanning sewage by sulfuric acid process |
| JP2934861B1 (en) * | 1998-09-25 | 1999-08-16 | 工業技術院長 | Method for recovering hydrogen from aliphatic amine compounds |
| CN103111166A (en) * | 2013-03-08 | 2013-05-22 | 山东科源化工有限公司 | Method for treating 2, 4-D waste gas |
| CN103224260A (en) * | 2013-04-12 | 2013-07-31 | 苏州中色德源环保科技有限公司 | Wastewater treatment and recovery method |
| CN103768923A (en) * | 2014-02-12 | 2014-05-07 | 南京大学环境规划设计研究院有限公司 | Multi-stage gradient absorption device and device for low- and medium-concentration dimethylamine waste gas |
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Application publication date: 20171114 |
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