CN2902425Y - Treatment device for organic mixed waste gas - Google Patents
Treatment device for organic mixed waste gas Download PDFInfo
- Publication number
- CN2902425Y CN2902425Y CN 200620039059 CN200620039059U CN2902425Y CN 2902425 Y CN2902425 Y CN 2902425Y CN 200620039059 CN200620039059 CN 200620039059 CN 200620039059 U CN200620039059 U CN 200620039059U CN 2902425 Y CN2902425 Y CN 2902425Y
- Authority
- CN
- China
- Prior art keywords
- absorption tower
- shower
- level
- tower
- interval
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
The utility model relates to the field of chemical industry and exhaust gas treatment and provides an organic mixed exhaust gas disposal device. Prior mixed exhaust gas treatment devices are high in operation costs and not mature in the technology of absorption liquid regeneration when the mixed exhaust gas is large in boiling point difference. The device of the utility model comprises a first-level absorbing tower, a second-level absorbing tower, a No.1 filter and a mixed organics separation device. The first-level absorbing tower and the second-level absorbing tower respectively comprise a shell (1), an air outlet on the top, an exhaust gas inlet on the bottom and an absorption liquid outlet. In the exhaust gas treatment system, the No.1 filter and the first-level tower are serially connected, the top of the first-level absorbing tower is connected with the bottom of the second-level absorbing tower, the two absorption liquid outlets respectively on the bottom of the first-level absorbing tower and on the bottom of the second-level absorbing tower are respectively connected with an mixed absorption liquid recycling apparatus. The utility model solves the technical problem of absorption liquid regeneration in the absorbing art of pollutant with a high boiling point, overcomes the problem that the system energy consumption is high and simplifies disposal process.
Description
Technical field
The utility model relates to chemical industry and exhaust-gas treatment field, and specifically, the utility model provides a kind of organic mix waste gas treating apparatus.
Background technology
At present, to organic pollution waste gas such as the DMF in the synthetic leather industry (dimethyl formamide), toluene and butanone, waste gas purification mainly concentrates on end treatment, and mature technique mainly contains at present: the absorption cleaning technology, catalytic combustion technology, and charcoal absorption technology.The absorption cleaning technology can effectively reclaim DMF, but other pollutants such as can't recycle-water solubility low toluene and butanone; Though catalytic combustion technology can solve above-mentioned contaminant problems simultaneously, operating cost is higher, belongs to elimination type technology, can't realize that the organic matter resource reclaims; The charcoal absorption technology can be adsorbed above-mentioned three kinds of pollutants from waste gas simultaneously simultaneously, but because DMF boiling point height, perfect regeneration techniques still require study exploitation and need intermittently operated.The relevant in recent years departments of science and technology, experts and scholars also improve these technologies, improve charcoal absorption as (1), are mainly reflected in new adsorbent, absorbing process and regeneration desorption technique aspect; (2) improve directly burning, be mainly reflected in the design of burner, as adopt novel endo form, adiabatic radiant burner; (3) improve catalytic combustion, mainly concentrate on the research and development of new catalyst, emphasis is poisoning and deactivation that how to prevent catalyst and the manufacturing cost that reduces catalyst.But these technological means all are based on the waste gas purification of end treatment, do not consider the recycling of organic principle in the waste gas.It is the absorption process technology of purpose that Italy has developed with major pollutants DMF in the recovery waste gas, the overall recovery of DMF can reach 90%, but the introduction expense costliness of this technology, and can't satisfy the environmental requirement of toluene and butanone governance for reaching standard discharging in China's leather technology waste gas.Application number be 200410053246 " recovery method of toluene, butanone and dimethyl formamide in the wet-method synthetic leather process gas " though in the technology mentioned can both reclaim DMF, can reclaim toluene and butanone again, but still have problems: (1) organic efficiency is low.The rate of recovery of this technology toluene and butanone is respectively 83.5% and 49.2%, and toluene and butanone exceed standard greatly in the gas of processing back, can't reach the environment protection emission requirement; (2) flow process complexity, operation requires high, and operation easier is big, is not suitable for environment-friendly engineering and uses; (3) owing to be subjected to the restriction of the gas liquid ratio upper limit, operating gas velocity is little in the tower, is 1.76m/s only, makes equipment volume huge, and absorption efficiency is low, is difficult to reach reduced investment, effective purpose.
Summary of the invention
The purpose of this utility model provides a kind of emission-control equipment, adds atmosphere speed to reach, raises the efficiency, simplifies flow process, reduces purposes such as equipment cost, the realization system rationally, economic, feasible management goal.
The utility model provides a kind of emission-control equipment.This device comprises first grade absorption tower 19,20, No. 1 filter 13 of two-level absorption tower and mixes organic matter separation equipment 18; First grade absorption tower 19 exports 11 with exhaust outlet 2, bottom exhaust gas inlet 10, absorption liquid that two-level absorption tower 20 includes housing 1, top; In this exhaust treatment system, No. 1 filter 13 is connected with first grade absorption tower 19, the top of first grade absorption tower 19 links to each other with two-level absorption tower 20 bottoms, and first grade absorption tower 19 links to each other with blend absorbent reclaimer 18 respectively with the absorption liquid outlet 11 of two-level absorption tower 20 bottoms.
In the utility model, first grade absorption tower 19 is the multistage absorption tower with two-level absorption tower 20, in establish filler interval and spray interval 9; The filler interval is in spray interval 9 tops, in establish packing layer 5 and shower, shower is positioned at packing layer 5 tops; Spray interval 9 communicates with bottom exhaust gas inlet 10 and absorption liquid outlet 11, establishes shower in the spray interval 9; Shower communicates with nozzle 4.
In the utility model, first grade absorption tower 19 communicates series circulation pump 12 in the path respectively with the absorption liquid outlet 11 of two-level absorption tower 20 with the nozzle 4 of its spray interval 9.
In the utility model, collection chamber 7 is connected with No. 1 filter 13; When waste gas enters this system, enter the absorption tower by 7, No. 1 filter 13 of collection chamber, bottom, absorption tower exhaust gas inlet 10 successively.
In the utility model, the shower of spraying layer promptly is designed to spray in the same way or reverse spray at the spraying layer top or bottom the spraying layer.
In the utility model, first grade absorption tower 19 all has mist elimination layer 3 with the cat head of two-level absorption tower 20.
In the utility model, in first grade absorption tower 19 and the two-level absorption tower 20, spray interval 9 is that the multistage spray absorbs, and the filler interval is that the multistage filler absorbs; The packing layer section is positioned at spray interval 9 tops.For example, at the filler interval eventually, with the adjacent successively from top to bottom tower that places of 2-10 packing layer.Preferably, can adopt 2-5 packing layer adjacent successively.
In the utility model, establish two adjacent filler intervals that are arranged above and below in the tower of first grade absorption tower 19 and two-level absorption tower 20.
In the utility model, in first grade absorption tower 19 and the two-level absorption tower 20, absorption liquid outlet 11 communicates series circulation pump 12 in the path with the nozzle 4 of the filler interval of nearly spray interval 9.
In the utility model, in first grade absorption tower 19 and the two-level absorption tower 20, in first grade absorption tower 19 and the two-level absorption tower 20, establish tube connector 22, shower 21 and shower 27 between different spraying layers in the spray interval 9; Shower 21 and shower 27 can be provided with a plurality of nozzles 4 as required.
In the utility model, establish flue gas leading 26 in the spraying layer of first grade absorption tower 19 and two-level absorption tower 20 and import pending gas; Shower 21 communicates with shower 27, and shower 27 inserts in the flue gas leading 26, and the spray liquid of shower 27 ejections contacts in the same way with waste gas.
In the utility model, in first grade absorption tower 19 and the two-level absorption tower 20, spray interval 9 is that the multistage spray absorbs, and the filler interval is that the multistage filler absorbs; The packing layer section is positioned at spray interval 9 tops.For example, at the filler interval eventually, with the adjacent successively from top to bottom tower that places of 2-10 packing layer.Preferably, can adopt 2-5 packing layer adjacent successively.
In the utility model, the main component of absorbent is higher boiling, low volatile organic, and spray liquid is the absorbent that contains small amounts of contamination.For example, adopt DMF etc.
The utility model in application, 40～75 ℃ of absorption tower column bottom temperatures, 30～55 ℃ of cats head.Absorption liquid adopts at the bottom of the tower circulating pump absorptions that circulate at the bottom of the tower, and getting rid of liquid outward is to get rid of outside circulating-pump outlet is undertaken by the branch road of being with flowmeter and by-pass valve control.Get rid of liquid outward and determine, normally 0.1m according to the concentration of polluting in the waste gas
3/ h～5m
3/ h.
In the utility model, mix waste gas is at first removed large particulate matter by filter 13, enters bottom, one-level mix waste gas absorption tower then and also absorbs through the multistage spray, absorbs through packing layer 5 and mist elimination layer 3 again.The gas of tower top outlet directly enters two-level absorption tower, qualified discharge after absorption of multistage spray and filler absorption.Absorption liquid partial reflux at the bottom of the tower, the outer into separation and recovery system that gets rid of of part.In the utility model, the exhaust gas inlet tube opening designs downwards at the bottom of the tower, and high cycle speed can reach 2.8～4.0m/s, has dwindled equipment volume greatly, and high gas speed makes gas and spray liquid full contact, and absorption efficiency improves greatly.Spraying layer adopts multi-form multistage spray equipment, makes the liquid mist even, has increased the touch opportunity of gas and absorption liquid.Two-layer packing layer all adopts structured packing, and supporting layer is arranged, and shower is established on top, and absorption liquid contacts in packing layer with gas.A demister is established on the top of tower, to remove the liquid mist in the gas, is beneficial to next step processing.The outlet of rich solution at the bottom of by tower discharged, and it is recycling that part is back to shower through circulating pump, and part throws away separates.
Among the embodiment of the present utility model, enumerated and utilized DMF (dimethyl formamide) to handle the process that synthetic leather technology produces waste gas for absorbent.The low concentration mix waste gas that synthetic leather technology produces through gas gathering system enter collection chamber all with concentration and flow, enter the absorption tower after removing large granular impurity by filter then, gas contacts with the high speed in reversed direction of spray liquid, absorb through packing layer, the concentration of water-insoluble pollutant levels such as toluene and butanone etc. is less than 10mg/m in the exit gas again
3, DMF concentration is less than 100mg/m
3, about 50 ℃ of temperature; The most of circulation of absorption liquid at the bottom of the tower, small part is got rid of into separation and recovery system outward.The DMF gas that contains of outlet directly enters DMF efficient absorption tower, qualified discharge after absorption of multistage spray and filler absorption.
Advantage of the present utility model is:
1. present technique can reclaim multiple organic pollution in the waste gas simultaneously, and to containing boiling point greater than the pollutant waste gas more than 120 ℃, the absorption efficiency height of pollutant can be controlled exit gas concentration such as toluene, butanone etc.＜10mg/m simultaneously especially
3, DMF＜20g/m
3
2. the present technique route is simple, practical, and operating cost is low, and operating cost only is 1/5 of a condensation method recovery technology, 1/2 of absorption process recovery technology.
3. present technique combines filler absorption and spray absorption techniques advantage, and tower is handled empty scooter 0.50m/s～4.50m/s, and disposal ability is strong, is 3～4 times of conventional absorption techniques.
4. it is extensive to handle object, and callable EGT amplitude broad, organic pollutant category are many, and the organic pollution of any water-soluble dissolubility high boiling substance is all had good assimilation effect.As surface-treated waste gas such as synthetic leather industry, printing industry, textile industry, sprayings.
5. this equipment can make full use of the high temperature raising absorption efficiency of synthetic leather technology waste gas, and does not need cooling or heat-exchanger rig, has simplified handling process.
Description of drawings
Fig. 1 is organic mix waste gas treating apparatus schematic diagram of the present utility model.Wherein, the 1st, housing, the 2nd, top vent, the 3rd, mist elimination layer, the 4th, nozzle, the 5th, packing layer, 6 is No. 1 blower fans, 8 is No. 2 blower fans, the 7th, collection chamber, the 9th, spraying layer, the 10th, bottom exhaust gas inlet, the 11st, absorption liquid outlet, the 12nd, circulating pump, 13 is No. 1 filters, 14 is No. 2 filters, 15 is No. 1 flow quantity recorders, and 16 is No. 2 flow quantity recorders, the 17th, and condenser, the 18th, blend absorbent separation equipment, the 19th, first grade absorption tower, the 20th, two-level absorption tower.
Fig. 2 is system's typical structure schematic diagram.Wherein, 21 is shower, and 22 is the spraying layer tube connector, and 23 is absorption liquid import department, and 27 for inserting the shower in the flue gas leading.
Fig. 3 top spraying layer structure schematic top plan view.Wherein, 24 is the interface of tube connector and top spraying layer, and 25 is support.
Fig. 4 is a spraying layer ring pipe schematic top plan view.Wherein, 26 is flue gas leading.
The specific embodiment
In an embodiment, this process application is in the recycling treatment of synthetic leather technology mix waste gas.Waste gas mainly contains DMF (dimethyl formamide), toluene, butanone etc., and the organic contamination substrate concentration is 2000～8000mg/Nm
3, wherein DMF is about 70%, other organic pollution such as toluene about 30%.About 74 ℃ of EGTs, major pollutants DMF and butanone are the awkward water-soluble solvent of soluble in water, toluene, and the two boiling-point difference is apart from big (greater than more than 80 ℃).
Mix waste gas absorption tower (one-level) absorption liquid adopts DMF.Waste gas after collecting by No. 1 blower fan send into collection chamber all with concentration and flow, enter mix waste gas absorption tower (one-level) after removing large granular impurity by No. 1 filter then, gas contacts with the high speed in reversed direction of spray liquid, absorbs through packing layer again, discharges after removing steam in the gas by demister at last.The concentration of toluene and butanone etc. is less than 5mg/m in the outlet waste gas
3, DMF concentration is less than 100mg/m
3, about 50 ℃ of temperature.Absorption liquid is discharged by outlet 11 at the bottom of the tower, and after condenser was cooled to about 40 ℃, major part was thrown nozzle into by circulating pump, and small part throws away after removing impurity by No. 2 filters, enters mixing organic matter knockout tower and separates recovery.
DMF efficient absorption tower (two-level absorption tower) absorption liquid adopts running water.Mix waste gas absorption tower (one-level) outlet waste gas discharges after spray, filler absorption, demist after entering this tower equally, and the concentration of toluene and butanone etc. is less than 10mg/m in the exit gas
3, DMF concentration is less than 20mg/m
3Absorption liquid partly circulates at the bottom of the tower, and part enters the DMF retracting device.All establish flow quantity recorder before the retracting device.
The rate of recovery of toluene of the present utility model, butanone is more than 92%, air velocity 2.80m/s～4.50m/s adopts the multistage spray to combine with multistage filler absorption techniques, and the operating gas velocity of operational tower is improved, under the situation of identical air quantity, also can reduce equipment volume; Can also improve absorption efficiency on the other hand.Concrete size of equipment and efficient are determined according to handling air quantity.
Claims (10)
1, a kind of organic mix waste gas treating apparatus is characterized in that, this device comprises first grade absorption tower (19), two-level absorption tower (20), No. 1 filter (13) and mixes organic matter separation equipment (18); First grade absorption tower (19) exports (11) with exhaust outlet (2), bottom exhaust gas inlet (10), absorption liquid that two-level absorption tower (20) includes housing (1), top; In this emission-control equipment, No. 1 filter (13) is connected with first grade absorption tower (19), the top of first grade absorption tower (19) links to each other with two-level absorption tower (20) bottom, and first grade absorption tower (19) links to each other with blend absorbent reclaimer (18) respectively with the absorption liquid outlet (11) of two-level absorption tower (20) bottom.
2, device according to claim 1 is characterized in that, first grade absorption tower (19) and two-level absorption tower (20) are the multistage absorption tower, in establish filler interval and spray interval (9); The filler interval is in spray interval (9) top, in establish packing layer (5) and shower, shower is positioned at packing layer (5) top; Spray interval (9) communicates with bottom exhaust gas inlet (10) and absorption liquid outlet (11), establishes shower in the spray interval (9); Shower communicates with nozzle (4).
3, device according to claim 1 is characterized in that, first grade absorption tower (19) communicates series circulation pump (12) in the path respectively with the absorption liquid outlet (11) of two-level absorption tower (20) with its spray interval (9).
4, device according to claim 1 is characterized in that, the preceding collection chamber (7) that is in series with of No. 1 filter (13).
5, device according to claim 2 is characterized in that, the shower of spraying layer is at the spraying layer top or bottom the spraying layer.
6, device according to claim 2 is characterized in that, first grade absorption tower (19) all has mist elimination layer (3) with the cat head of two-level absorption tower (20).
7, device according to claim 2 is characterized in that, in first grade absorption tower (19) and the two-level absorption tower (20), absorption liquid outlet (11) communicates series circulation pump (12) in the path with the nozzle (4) of the filler interval of nearly spray interval (9).
8, device according to claim 2 is characterized in that, in first grade absorption tower (19) and the two-level absorption tower (20), establishes tube connector (22), shower (21) and shower (27) between different spraying layers in the spray interval (9); Shower (21) and shower (27) can be provided with a plurality of nozzles (4) as required.
9, device according to claim 2 is characterized in that, establishes flue gas leading (26) in the spraying layer of first grade absorption tower (19) and two-level absorption tower (20) and imports pending gas; Shower (21) communicates with shower (27), and shower (27) inserts in the flue gas leading (26), and the spray liquid of shower (27) ejection contacts in the same way with waste gas.
10, device according to claim 2 is characterized in that, in first grade absorption tower (19) and the two-level absorption tower (20), spray interval (9) is that the multistage spray absorbs, and the filler interval is that the multistage filler absorbs; The packing layer section is positioned at spray interval (9) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620039059 CN2902425Y (en) | 2006-01-19 | 2006-01-19 | Treatment device for organic mixed waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620039059 CN2902425Y (en) | 2006-01-19 | 2006-01-19 | Treatment device for organic mixed waste gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2902425Y true CN2902425Y (en) | 2007-05-23 |
Family
ID=38077827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620039059 Expired - Fee Related CN2902425Y (en) | 2006-01-19 | 2006-01-19 | Treatment device for organic mixed waste gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2902425Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103920369A (en) * | 2014-04-24 | 2014-07-16 | 南京国昌化工科技有限公司 | Waste gas absorption tower |
| CN104667646A (en) * | 2015-01-23 | 2015-06-03 | 北京博源恒升高科技有限公司 | Waste gas dust removing method and dust removing agent |
| CN105107339A (en) * | 2015-08-03 | 2015-12-02 | 东莞市环境科学研究所 | Method and device for treating organic exhaust gas |
| CN109078459A (en) * | 2018-08-31 | 2018-12-25 | 西安蓝晓科技新材料股份有限公司 | A kind of device and technology of absorption-adsorption-desorption cycle resource utilization volatile organic gases |
| CN109200768A (en) * | 2018-10-24 | 2019-01-15 | 中科协创环境科技江苏有限公司 | A kind of exhaust treatment system producing PVC |
-
2006
- 2006-01-19 CN CN 200620039059 patent/CN2902425Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103920369A (en) * | 2014-04-24 | 2014-07-16 | 南京国昌化工科技有限公司 | Waste gas absorption tower |
| CN104667646A (en) * | 2015-01-23 | 2015-06-03 | 北京博源恒升高科技有限公司 | Waste gas dust removing method and dust removing agent |
| CN105107339A (en) * | 2015-08-03 | 2015-12-02 | 东莞市环境科学研究所 | Method and device for treating organic exhaust gas |
| CN109078459A (en) * | 2018-08-31 | 2018-12-25 | 西安蓝晓科技新材料股份有限公司 | A kind of device and technology of absorption-adsorption-desorption cycle resource utilization volatile organic gases |
| CN109200768A (en) * | 2018-10-24 | 2019-01-15 | 中科协创环境科技江苏有限公司 | A kind of exhaust treatment system producing PVC |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100467097C (en) | Process method of purifying and recycling mixed organic waste gas | |
| CN104906876B (en) | A kind of exhaust purifying method for organic polluted soil thermal desorption and device | |
| CN100569329C (en) | Method for cleaning, recovering and treating painted lacquer exhaust organic gas and device | |
| CN206709101U (en) | A kind of device of heat accumulation type thermal oxidation stove processing volatile organic waste gas | |
| CN202355978U (en) | Cyclone-type management device for recovering organic gas generated by spraying paint | |
| CN201140029Y (en) | Complex organic waste gas absorption purifier | |
| CN2902425Y (en) | Treatment device for organic mixed waste gas | |
| CN105289217B (en) | VOCs recycling systems in a kind of waste gas | |
| CN103203170A (en) | Flue-gas cleaner | |
| CN102068890A (en) | Method and device for treating complex industrial organic waste gas | |
| CN201988299U (en) | Waste gas purifying device | |
| CN1820820A (en) | Resource treating method for mixed waste gas | |
| CN101732943A (en) | Device and method for controlling waste gas | |
| CN101406804B (en) | Purification treatment device for flue tail gas of fuel oil cremator | |
| CN108295602A (en) | Thermal desorption tail gas multi-stage filtration systems and method | |
| CN215782471U (en) | Jet flow mixed-moving two-stage spraying pretreatment device | |
| CN205164315U (en) | Paint spraying waste gas processing system | |
| CN208212807U (en) | Thermal desorption tail gas multi-stage filtration systems | |
| CN106352364A (en) | Integrated method and integrated device for catalytic cracking, flue gas incineration and heat exchange separation | |
| CN108926968A (en) | A kind of waste heat from tail gas absorption cleaning separator and method | |
| CN201076803Y (en) | Vortex exhaust gas purification tower | |
| CN106823727A (en) | A kind of greasy filth waste gas purification and residual heat using device | |
| CN203886369U (en) | Integrated dust extraction and purification device for stationary diesel engine system | |
| CN2354633Y (en) | Diesel oil absorption method purifier | |
| CN215138343U (en) | Dry-wet combined desulfurization and dust removal system for waste gas generated by brick making by blending and burning sludge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070523 Termination date: 20150119 |
|
| EXPY | Termination of patent right or utility model |