CN209237705U - Dimethylamine exhaust gas controlling device in a kind of synthetic leather industry - Google Patents
Dimethylamine exhaust gas controlling device in a kind of synthetic leather industry Download PDFInfo
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- CN209237705U CN209237705U CN201820923958.1U CN201820923958U CN209237705U CN 209237705 U CN209237705 U CN 209237705U CN 201820923958 U CN201820923958 U CN 201820923958U CN 209237705 U CN209237705 U CN 209237705U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Treating Waste Gases (AREA)
Abstract
The utility model discloses dimethylamine exhaust gas controlling device in a kind of synthetic leather industry.The utility model includes that level-one captures tower, second capture tower, dry filter, photoelectric integral clarifier, nanometer absorption tower；The air outlet that level-one captures tower is connect by pipeline with the air inlet of second capture tower, the air outlet of second capture tower is connected by the air inlet of pipeline and dry filter, the air outlet of dry filter is connect with the air inlet of photoelectric integral clarifier, and the air outlet of photoelectric integral clarifier is connect by pipeline with the air inlet on nanometer absorption tower.Electric discharge high-field electrode is equipped in plasma reaction section；The high-field electrode that discharges uses stainless steel mace structure.After the utility model increases two-stage capture tower, plasma discharge efficiency is improved, and generates enough high energy active materials, and then ensure that the degradation of dimethylamine.
Description
Technical field
The utility model belongs to technical field of waste gas treatment, and in particular to one kind is based on the integrated synthetic leather of photoelectrocatalysis
Dimethylamine exhaust gas controlling device in industry.
Background technique
Dimethylamine industrial waste gas is mainly derived from dimethyl fumarate (DMF) aqueous solution separating-purifying process.And DMF is weight
The Organic Ingredients and excellent solvent wanted, are widely used in the industries such as synthetic leather, gloves, copper-clad plate.In the prior art mainly with
Heating rectifying mode separates DMF, and during heating, the dimethylamine exhaust gas of decomposition is in each equipment exhaust emissions by fixed gas
It takes out of.Dimethylamine exhaust gas has a great impact to environment, can also generate very big harm to human health, if deal with improperly by
High risks can be generated to ambient enviroment and inhabitation crowd.It is domestic at present mainly to have combustion method, oxidation for foul waste gas improvement
Method (such as photocatalysis, low temperature plasma method), absorption process, absorption method, bioanalysis:
1) combustion method
It is reacted by Strong oxdiative, flammable odorant of degrading.This method is primarily adapted for use in high concentration, small tolerance it is flammable
The processing of property odorant.The purification efficiency of this method is high, and odorant is thoroughly decomposed, but equipment is perishable, consumption
Fuel, it is at high cost, secondary pollution is likely to form in processing.
2) solvent absorption
The method is deodorized using the odorant in solvent dissolution foul smell.Suitable for it is high, concentration odorant
Processing, can handle the gas of big flow, and technique is most mature, but purification efficiency is not high, consume absorbent, and pollutant is only turned by gas phase
Move on to liquid phase.
3) absorption method
Odorant deodorization is adsorbed using adsorbent.This method is suitable for the foul gas that low concentration, high purification requires
Processing, purification efficiency is very high, multi-component foul gas, but adsorbent somewhat expensive can be handled, to effluvium to be processed
Body requires height, that is, has lower humidity and dustiness.
4) biodegradation technique
Biological deodorization method refers to the metabolic activity degradation odorant using microorganism, is allowed to be oxidized to final product, from
And achieve the purpose that odorlessization, innoxious, common method have biological filter method, biosorption process (suspension growth system),
Bio-trickling filter method and biological agent method.The advantages that biological degradation method equipment is simple, and operation and maintenance cost is low, without secondary pollution,
Especially its more aobvious economy in the good gaseous pollutant of processing low concentration, biodegradability.Volume is big and the residence time is long
It is the main problem of bioanalysis, while the method is poor to the exhaust gas of complicated component or the VOCs removal effect for being difficult to degrade.
5) photocatalytic degradation
The method mainly utilizes catalyst (such as TiO2) photocatalytic, effluvium of the oxidation-adsorption in catalyst surface
Body finally generates CO2And H2O.It uses up irradiation semiconductor light-catalyst, the valence band transition for being full of the electronics of semiconductor
To empty conduction band, and positively charged hole (h+) is left in valence band.Photo-induced hole has very strong oxidisability, can capture semiconductor
Electronics in the organic matter or solvent of particle surface absorption, make not absorb light originally and can not the sub- direct oxidation of the glistening light of waves substance,
Oxidation is activated by photochemical catalyst.Photoinduced electron also has very strong reproducibility, so that the electron acceptor quilt of semiconductor surface
Reduction.Photocatalysis equipment is simple, low energy consumption, easy to operate, but handles effect for complicated component and foul gas difficult to degrade
Fruit is bad.
6) plasma technique
Plasma is referred to as the 4th kind of form of substance, and mountain electronics, ion, free radical and neutral particle composition, are to lead
Electronic fluids, generally holding electroneutral.Development prospect is corona discharge technology than broader plasma technique, at it
Reason VOCs has the advantages that high-efficient, capacity usage ratio is high, plant maintenance is simple, expense is low etc..Corona discharge refers to non-homogeneous
In electric field, so that gas is generated " electron avalanche " with higher electric field strength, a large amount of free electron occur, these electronics are in electric field
Accelerated motion is done under the action of power and obtains energy.When the energy and C-H that these electronics have, the bond energy phase of C=C or C-C key
When same or close, so that it may break these keys, to destroy the structure of organic matter.Corona discharge can produce using ozone as representative
The substance with Strong oxdiative ability, can be with oxidation of organic compounds.Plasma method high treating effect, plant maintenance is convenient, is suitble to
In the foul gas and other organic pollutants of processing low concentration.
Therefore, which will be based on Practical Project situation, using low temperature plasma and ultraviolet catalytic oxidation method
The advantages of waiting coordination techniques, making full use of above two technology.The high energy electron and active matter for making full use of discharge process to generate
Confrontation VOCs degrades, and complicated macromolecule contaminant is made to be changed into simple small molecule safe material, and then discharge process generates
High energy electron and active material also can ultimately generate CO by further oxidative degradation VOCs during light-catalyzed reaction2With
H2O reaches degradable process, for industry VOCs efficiently, low energy consumption administer development technical support is provided.It is sufficiently to combine
And play the superposition benefit of the binomial traditional technology, that is, it takes full advantage of low temperature plasma equipment cost and operating cost is low,
Good operability and the advantage of energy-saving consumption-reducing further through traditional Photocatalytic Oxidation is changed, improve photochemical catalyst service life and
Degradation capability is finally maximized favourable factors and minimized unfavourable ones, and the great potential of innovative technology is played.Simultaneously as inefficient, the plasma of previous pre-treatment
The characteristics of body equipment usually will appear Spark Discharges in industrial applications, and the utility model is directed to synthetic leather industry, if
It counts multi-stage spray and captures tower, significantly improve pre-treatment efficiency, and then guarantee the treatment effeciency of optoelectronic device.
Utility model content
In view of the shortcomings of the prior art, the utility model provides dimethylamine exhaust gas in a kind of synthetic leather industry to administer dress
It sets.
Utility model device includes that level-one captures tower, second capture tower, dry filter, photoelectric integral clarifier, receives
Rice absorption tower；The air outlet that level-one captures tower is connect by pipeline with the air inlet of second capture tower, the outlet air of second capture tower
Mouth is connected by the air inlet of pipeline and dry filter, the air outlet of dry filter and the air inlet of photoelectric integral clarifier
Connection, the air outlet of photoelectric integral clarifier are connect by pipeline with the air inlet on nanometer absorption tower, photoelectric integral clarifier and
Air-introduced machine is provided on pipeline between nanometer absorption tower.
Level-one captures tower, second capture tower is identical equipment, includes from bottom to up reservoir bed, gas enters layer, level-one is removed
Wet layer, level-one spraying layer, second level remove wet layer, second level spraying layer, demisting layer；Gas enters layer equipped with gas feed；Level-one dehumidifying
The filler that layer, second level remove wet layer is one of stainless steel, PP, polytetrafluoroethylene (PTFE) etc. or a variety of；Level-one spraying layer, second level spray
The roof spray system of layer is added with the aqueous solution of inorganic acid, for effectively absorbing dimethylamine exhaust gas；Demisting layer is for removing
The steam taken out of after processing and untreated complete particulate solid；Air outlet is provided at the top of demisting layer；
The porous filter medium (filtrate) of filling in the dry filter, passes through porous filter medium (filtrate) point
From solid, the liquid particle captured in gas；
The photoelectric integral clarifier include shell and from import to outlet set gradually filter element inside the shell,
Plasma reaction section, light-catalyzed reaction section, absorbing unit, wherein plasma reaction section, light-catalyzed reaction section can be more
Group is specifically determined by processing exhaust gas tolerance.
Filter cotton is filled in the filter element；
Electric discharge high-field electrode is equipped in plasma reaction section；The electric discharge high-field electrode uses stainless steel mace knot
Structure.Space width is 10~50mm on the barred body, can be adjusted according to the concentration of pollutant.Gas flow rate is 1~2.5m/
S, voltage range are 1.5~5kV.Become corona discharge from traditional dielectric barrier discharge, substantially increase machining area and puts
Electrical efficiency, to obtain more high energy active material purification dimethylamine exhaust gas.
Ultraviolet lamp and titanium deoxide catalyst are equipped in light-catalyzed reaction section；Wherein ultraviolet lamp uses low pressure mercury lamp, wave
A length of 200~280nm, preferably 254nm.
Active carbon filler is filled in absorbing unit, for absorbing the VOCs molecule generated, ozone.
The course of work:
(1), dimethylamine exhaust gas enters baffle-box, guarantees to enter the uniform steady of subsequent processing device gas flow and pressure
It is fixed, while having the function of certain gas-liquid separation.
(2) by baffle-box, treated that dimethylamine exhaust gas sequentially enters that level-one captures tower, second capture tower, according to diformazan
Amine physical characteristic soluble easily in water, absorbs most dimethylamine exhaust gas.
(3) since the ability of wet type capture is limited, part dimethylamine is still had not after the processing of level-one second capture tower
Be absorbed, into photoelectric integral clarifier after successively pass through plasma reaction section and light-catalyzed reaction section, plasma discharge mistake
The high energy electron and active material that journey generates degrade to VOCs, and complicated macromolecule contaminant is made to be changed into simple small molecule peace
Full substance, the high energy electron and active material that then discharge process generates also can further aoxidize during light-catalyzed reaction
Degradation VOCs ultimately generates CO2And H2O reaches degradable process.
(4) photoelectric integral clarifier treated gas is sent into nanometer absorption tower, substance water-soluble in exhaust gas is inhaled
It takes down, the gas that last nanometer absorption tower comes out is by exhaust tube in 20 meters of high altitude discharges.
The utility model has the beneficial effects that
The poor efficiency of pre-treatment compared with the prior art causes plasma discharge processes flashing to discharge, while oil
Mist affects the efficiency of discharge process, and after increasing two-stage capture tower, plasma discharge efficiency is improved, and it is living to generate enough high energy
Property substance, and then ensure that the degradation of dimethylamine.Meanwhile by combining high efficiency photocatalyst, generated by plasma discharge
High energy active material collaboration ultraviolet lamp activate photochemical catalyst, thus further Synergistic degradation dimethylamine, to efficiently remove
Dimethylamine.
1) odor removal efficient is high
This technique can efficiently remove the major pollutants such as volatile organic matter (VOCs), inorganic matter, ammonia, organic amine,
And various foul smells, for deodorization efficiency up to 90% or more, deodorising effect substantially exceeds " emission standard for odor pollutants "
(GB14554-93) and the discharge standard of " discharge standard of air pollutants " (GB 16297-1996).
2) adaptable
Be suitable for middle low concentration, atm number, the deodorization purified treatment of different foul gas substances, can daily 24 hours it is continuous
Work, stable and reliable operation.
3) operating cost is low
This equipment is noiseless without any mechanical action, is not necessarily to personal management and daily maintenance, need to only inspect periodically, this
Equipment energy consumption is low, and equipment resistance is low, can save air draft power energy consumption.
4) plasma apparatus is reduced electric discharge spacing, improves discharging efficiency, subtracted using mace electric discharge high-field electrode
Invalid exothermic phenomenon is lacked, and then has avoided generating Spark Discharges.
In short, this system equipment can thoroughly decompose poisonous and harmful substance in foul gas, and perfect deodorization effect can be reached
Harmless discharge can be fully achieved in fruit, the foul gas after decomposing, and will not generate secondary pollution, while reaching high-effective disinfecting
The effect of sterilization.
Detailed description of the invention
Fig. 1 is the apparatus structure schematic diagram of the utility model；
Fig. 2 is the utility model process flow chart；
Fig. 3 is the photoelectric integral clarifier structural schematic diagram of the utility model.
In figure: level-one captures tower 1, second capture tower 2, dry filter 3, photoelectric integral clarifier 4, air-introduced machine 5, nanometer
Absorption tower 6, reservoir bed 7, gas enter layer 8, level-one except wet layer 9, level-one spraying layer 10, second level are except wet layer 11, second level spraying layer
12, demisting layer 13, filter element 14, electric discharge high-field electrode 15, ultraviolet lamp 16, titanium deoxide catalyst 17, absorbing unit 18.
Specific embodiment
It is for further analysis to the utility model with reference to the accompanying drawing.
As shown in Figure 1, in synthetic leather industry dimethylamine exhaust gas controlling device include level-one capture tower 1, second capture tower 2,
Dry filter 3, photoelectric integral clarifier 4, nanometer absorption tower 6；The air outlet that level-one captures tower passes through pipeline and second capture
The air inlet of tower connects, and the air outlet of second capture tower is connected by the air inlet of pipeline and dry filter, dry filter
Air outlet connect with the air inlet of photoelectric integral clarifier, the air outlet of photoelectric integral clarifier is absorbed by pipeline and nanometer
The air inlet of tower connects, and is provided with air-introduced machine 5 between photoelectric integral clarifier and nanometer absorption tower on pipeline.
Level-one captures tower, second capture tower is identical equipment, enters layer 8, level-one including reservoir bed 7, gas from bottom to up
Except wet layer 9, level-one spraying layer 10, second level remove wet layer 11, second level spraying layer 12, demisting layer 13；Gas enter layer equipped with gas into
Mouthful；Level-one removes wet layer, second level except the filler of wet layer is one of stainless steel, PP, polytetrafluoroethylene (PTFE) etc. or a variety of；Level-one spray
Layer, second level spraying layer roof spray system be added with inorganic acid aqueous solution, for effectively absorb dimethylamine exhaust gas；Demisting
Steam and untreated complete particulate solid of the layer for being taken out of after removal processing；Air outlet is provided at the top of demisting layer；
The porous filter medium (filtrate) of filling in the dry filter, passes through porous filter medium (filtrate) point
From solid, the liquid particle captured in gas；
As shown in figure 3, the photoelectric integral clarifier includes shell and sets gradually inside the shell from import to outlet
Filter element 14, plasma reaction section, light-catalyzed reaction section, absorbing unit 18, wherein plasma reaction section, photocatalysis
Conversion zone can be multiple groups, specifically be determined by processing exhaust gas tolerance.
Filter cotton is filled in the filter element；
Electric discharge high-field electrode 15 is equipped in plasma reaction section；The electric discharge high-field electrode uses stainless steel mace
Structure.Space width is 10~50mm on the barred body, can be adjusted according to the concentration of pollutant.Gas flow rate be 1~
2.5m/s, voltage range are 1.5~5kV.Become corona discharge from traditional dielectric barrier discharge, substantially increases machining area
And discharging efficiency, to obtain more high energy active material purification dimethylamine exhaust gas.
Ultraviolet lamp 16 and titanium deoxide catalyst 17 are equipped in light-catalyzed reaction section；Wherein ultraviolet lamp uses low-pressure mercury
Lamp, wavelength are 200~280nm, preferably 254nm.
Active carbon filler is filled in absorbing unit, for absorbing the VOCs molecule generated, ozone.
As shown in Fig. 2, dimethylamine exhaust gas Processing tecchnics in above-mentioned synthetic leather industry, specifically:
(1), dimethylamine exhaust gas enters baffle-box, guarantees to enter the uniform steady of subsequent processing device gas flow and pressure
It is fixed, while having the function of certain gas-liquid separation.
(2) by baffle-box, treated that dimethylamine exhaust gas sequentially enters that level-one captures tower, second capture tower, according to diformazan
Amine physical characteristic soluble easily in water, absorbs most dimethylamine exhaust gas.
(3) since the ability of wet type capture is limited, part dimethylamine is still had not after the processing of level-one second capture tower
Be absorbed, into photoelectric integral clarifier after successively pass through plasma reaction section and light-catalyzed reaction section, plasma discharge mistake
The high energy electron and active material that journey generates degrade to VOCs, and complicated macromolecule contaminant is made to be changed into simple small molecule peace
Full substance, the high energy electron and active material that then discharge process generates also can further aoxidize during light-catalyzed reaction
Degradation VOCs ultimately generates CO2And H2O reaches degradable process.
(4) photoelectric integral clarifier treated gas is sent into nanometer absorption tower, substance water-soluble in exhaust gas is inhaled
It takes down, the gas that last nanometer absorption tower comes out is by exhaust tube in 20 meters of high altitude discharges.
From the point of view of the improvement case administered with Fujian China synthetic leather Co., Ltd dimethylamine exhaust gas, this project treatment air quantity is pressed
10000m3/h, dimethylamine exhaust gas concentration about 200-300mg/m3, total VOCs about 300ppm.After the processing of this set of equipment,
During continuous operation, dimethylamine degradation rate can achieve 90% or more, and odor concentration reaches≤2000 (dimensionless), finally
It meets environmental requirements.
Claims (5)
1. dimethylamine exhaust gas controlling device in a kind of synthetic leather industry, it is characterised in that including level-one capture tower, second capture tower,
Dry filter, photoelectric integral clarifier, nanometer absorption tower；The air outlet that level-one captures tower passes through pipeline and second capture tower
The air outlet of air inlet connection, second capture tower is connected by the air inlet of pipeline and dry filter, and dry filter goes out
Air port is connect with the air inlet of photoelectric integral clarifier, and the air outlet of photoelectric integral clarifier passes through pipeline and nanometer absorption tower
Air inlet connection；
Level-one captures tower, second capture tower is identical equipment, include from bottom to up reservoir bed, gas enter layer, level-one except wet layer,
Level-one spraying layer, second level remove wet layer, second level spraying layer, demisting layer；Gas enters layer equipped with gas feed；Level-one spraying layer, two
Grade spraying layer is for absorbing dimethylamine exhaust gas；Steam and untreated complete solid-state of the demisting layer for being taken out of after removal processing
Grain object；Air outlet is provided at the top of demisting layer；
The photoelectric integral clarifier include shell and from import to outlet set gradually filter element inside the shell, etc. from
Daughter conversion zone, light-catalyzed reaction section, absorbing unit；
Electric discharge high-field electrode is equipped in plasma reaction section；The electric discharge high-field electrode uses stainless steel mace structure；
Ultraviolet lamp and titanium deoxide catalyst are equipped in light-catalyzed reaction section；
Absorbing unit is used to absorb the VOCs molecule generated, ozone；
Space width is 10~50mm on the barred body of the described electric discharge high-field electrode stainless steel mace, according to the concentration of pollutant into
Row is adjusted；Gas flow rate is 1~2.5m/s, and voltage range is 1.5~5kV.
2. dimethylamine exhaust gas controlling device in a kind of synthetic leather industry as described in claim 1, it is characterised in that plasma
Conversion zone, light-catalyzed reaction section are multiple groups, are determined by processing exhaust gas tolerance.
3. dimethylamine exhaust gas controlling device in a kind of synthetic leather industry as described in claim 1, it is characterised in that the mistake
It filters and fills filter cotton in unit.
4. dimethylamine exhaust gas controlling device in a kind of synthetic leather industry as described in claim 1, it is characterised in that the purple
Outer lamp uses low pressure mercury lamp, and wavelength is 200~280nm.
5. dimethylamine exhaust gas controlling device in a kind of synthetic leather industry as claimed in claim 4, it is characterised in that the purple
Outer lamp wavelength is 254nm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820923958.1U CN209237705U (en) | 2018-06-14 | 2018-06-14 | Dimethylamine exhaust gas controlling device in a kind of synthetic leather industry |
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| CN201820923958.1U CN209237705U (en) | 2018-06-14 | 2018-06-14 | Dimethylamine exhaust gas controlling device in a kind of synthetic leather industry |
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| CN209237705U true CN209237705U (en) | 2019-08-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108554172A (en) * | 2018-06-14 | 2018-09-21 | 杭州电子科技大学 | Dimethylamine exhaust gas controlling device and its technique in a kind of synthetic leather industry |
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2018
- 2018-06-14 CN CN201820923958.1U patent/CN209237705U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108554172A (en) * | 2018-06-14 | 2018-09-21 | 杭州电子科技大学 | Dimethylamine exhaust gas controlling device and its technique in a kind of synthetic leather industry |
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