CN206549398U - A kind of deep cooling exhaust gas processing device - Google Patents
A kind of deep cooling exhaust gas processing device Download PDFInfo
- Publication number
- CN206549398U CN206549398U CN201720186140.1U CN201720186140U CN206549398U CN 206549398 U CN206549398 U CN 206549398U CN 201720186140 U CN201720186140 U CN 201720186140U CN 206549398 U CN206549398 U CN 206549398U
- Authority
- CN
- China
- Prior art keywords
- condenser
- nitrogen
- exhaust gas
- gas
- pipeline
- 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.)
- Active
Links
Landscapes
- Treating Waste Gases (AREA)
Abstract
A kind of deep cooling exhaust gas processing device of the utility model, including vaporizer, the first condenser, the second condenser and recovered liquid storage tank；First condenser is provided with to be exported with the below standard inlet exhaust gas of the first condenser internal switching, offgas outlet up to standard, liquid nitrogen import, gas nitrogen inlet, solvent outlet and gas nitrogen；Second condenser, second condenser is provided with to be exported with the below standard inlet exhaust gas of the second condenser internal switching, offgas outlet up to standard, liquid nitrogen import, gas nitrogen inlet, solvent outlet and gas nitrogen；Recovered liquid storage tank is connected with the first condenser and the second condenser respectively, for receiving the recovered solvent liquid that is condensed in the first condenser and the second condenser.The utility model is by means of the extremely low temperature of liquid nitrogen, and equipment is capable of fast starting/stop；Capital equipment is static device, and maintenance cost is extremely low；Nitrogen after gasification is available for production to reuse, and reduces operating cost；Recycling design is available for production to reuse；The Automatic Control of modernization, double switch condenser mode of operations, it is ensured that device runs without interruption.
Description
Technical field
The utility model is related to exhaust gas processing device, more particularly to a kind of deep cooling exhaust gas processing device.
Background technology
In all types of industries production process, due to using a large amount of chemical raw materials, organic solvent etc., it can produce and much include
The process tail gas of volatile organic components；Volatile organic matter, i.e. VOCs (Volatile Organic Compounds)；Root
According to the definition of the World Health Organization, it refers to：50 DEG C -250 DEG C of compound, saturated vapor pressure is more than 133.32Pa at room temperature,
It is present in the type organic in air in vapour form at normal temperatures.By the difference of its chemical constitution, it can be further divided into
Eight classes：Alkanes, aromatic hydrocarbons, alkenes, halohydrocarbon, esters, aldehydes, ketone and other；VOCs main component has：Hydro carbons, halo
Hydrocarbon, oxygen hydrocarbon and nitrogen hydrocarbon, it includes：Benzene homologues, organic chloride, freon series, organic ketone, amine, alcohol, ether, ester, acid and oil
Hydrocarbon compound etc..
VOCs can cause very serious influence to atmospheric environment, and harm is produced to health.On State-level, in
Magnificent people's republic's Environmental Protection Department is promulgated《Law of Environmental Protection of the People's Republic of China》、《People's Republic of China's air is dirty
Contaminate anti-therapy》Etc. laws and regulations, and in order to prevent and treat environmental pollution, ecological safety and health are ensured, promote volatility to have
The progress of machine thing (VOCs) pollution prevention technique, it is proposed that with directive significance《Volatile organic matter (VOCs) prevention and cure of pollution
Technical policy》；This《Technical policy》Propose, VOCs prevention and cure of pollution should follow source and process control is combined with end treatment
Integrated control principle；The processing scheme feasible for presently, there are is concluded as shown in figure 1, main including following several：
1st, for the waste gas of the VOCs containing high concentration, more using condensation method, absorption process recycle, or using catalysis burning and
Qualified discharge after the purification of heating power incineration technology.
2nd, it is many that organic solvent is reclaimed using adsorption technology for the waste gas of the VOCs containing intermediate concentration.
3rd, it is many to be discharged using after biological method purification for the waste gas of the VOCs containing low concentration.
During actual industrial production, VOCs recycling is encouraged, and preferentially encourages the reuse in production system；
Among VOCs component, it is greatly organic solvent to have, so recycling, Ke Yi can be carried out to organic solvent
Greatly reduce the production cost of enterprise while meet the requirement of environmental protection；For VOCs recovery, from existing VOCs processing schemes
Middle analysis, has than better suited method：Condensation method is reclaimed or adsorption-desorption-condensation combination is reclaimed；Both approaches are all wrapped
Process section containing condensation, condensation refers to utilize VOCs in tail gas to have different saturated vapors under different temperature and pressures
Pressure, at reduction temperature or intensified pressure, organic solvent reaches that starting condensation during dew-point temperature gets off, and reclaims organic molten to reach
Agent and the purpose of cleaning of off-gas.The recovery method of condensation, technology is simple, and small by ambient temperature, pressure influence, recovering effect is steady
It is fixed, can directly it condense at ambient pressure, operating temperature is below the flash-point of VOCs each components, with very high security.
Condensation is that tail gas and cooling agent are realized by direct or indirect heat exchange within the condenser；Using most cold
But agent is water or Glycol Mixture, and it is made by way of mechanical compression type freezes, and temperature range is generally -30
~+10 degree.
There are 4 shortcomings in existing operational version：
First, the fusing point of most of VOCs components will realize higher organic efficiency, it is necessary to cooling agent below -80 degree
Temperature can be following in -80 degree, but the coolant temperature that produces of mechanical refrigeration be extremely difficult to -80 spend below deep cooling work
Condition.
Second, the toggle speed of mechanical refrigeration equipment is slower, the used time for reaching operating temperature is longer.
Third, in mechanical refrigeration equipment device, dynamic equipment is more, and compressor, blower fan, water pump etc., maintenance cost can compare
It is high.
Fourth, using nitrogen as the occasion of process gas for factory, the cold energy of liquid nitrogen is wasted.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of rate of recovery height, efficiency is fast, cost is low, nitrogen is recyclable
A kind of deep cooling exhaust gas processing device utilized.
To reach above-mentioned purpose, the technical solution of the utility model is as follows：
A kind of deep cooling exhaust gas processing device, the deep cooling exhaust gas processing device includes：
One vaporizer, for being heated to the gas nitrogen after liquid nitrogen gasification, supply rear end is used；
First condenser, first condenser be provided with the below standard inlet exhaust gas of the first condenser internal switching,
Offgas outlet up to standard, liquid nitrogen import, gas nitrogen inlet, solvent outlet and the outlet of gas nitrogen；Below standard inlet exhaust gas and external exhaust gas
Inlet manifold connects, and offgas outlet up to standard is provided with the first valve A1, and liquid nitrogen import passes through a pipeline and outside liquid nitrogen storage tank
Connection, the pipeline is provided with the first valve A3, and gas nitrogen inlet is connected with outside gas nitrogen pipe road by a pipeline, set on the pipeline
There is the first valve A2, solvent liquid outlet is connected with recovered liquid storage tank, and the outlet of gas nitrogen is connected by pipeline with vaporizer, and gas nitrogen goes out
Pipeline between mouth and vaporizer is provided with the first valve A4；Pipeline between first valve A2 and the first condenser, which is provided with, to be added
Hot device；
Second condenser, second condenser be provided with the below standard inlet exhaust gas of the second condenser internal switching,
Offgas outlet up to standard, liquid nitrogen import, gas nitrogen inlet, solvent outlet and the outlet of gas nitrogen；Below standard inlet exhaust gas and external exhaust gas
Inlet manifold connects, and offgas outlet up to standard is provided with the second valve B1, and liquid nitrogen import passes through a pipeline and outside liquid nitrogen storage tank
Connection, the pipeline is provided with the second valve B3, and gas nitrogen inlet is connected with outside gas nitrogen pipe road by a pipeline, set on the pipeline
There is the second valve B2, solvent liquid outlet is connected with recovered liquid storage tank, and the outlet of gas nitrogen is connected by pipeline with vaporizer, and gas nitrogen goes out
Pipeline between mouth and vaporizer is provided with the second valve B4；Pipeline between second valve B2 and the second condenser, which is provided with, to be added
Hot device；
One recovered liquid storage tank, recovered liquid storage tank is connected with the first condenser and the second condenser respectively, for receiving first
Be condensed recovered solvent liquid in condenser and the second condenser.
In one embodiment of the present utility model, the heat exchanger tube in first condenser, the second condenser is not
Become rusty steel heat exchanger tube.
In one embodiment of the present utility model, the deflector in first condenser, the second condenser is footpath
To the deflector of setting.
In one embodiment of the present utility model, first condenser, the second condenser are fin tube type cold
Condenser.
In one embodiment of the present utility model, set between the external exhaust gas inlet manifold and below standard inlet exhaust gas
There is dehydration device.
By above-mentioned technical proposal, the beneficial effects of the utility model are：
1st, under liquid nitrogen normal pressure temperature can as little as -196 degree, most organic solvents are completely cold in this temperature spot
It is solidifying even to solidify, the VOCs rate of recovery can be made to reach more than 99%.
2nd, the low-temperature characteristics that liquid nitrogen has so that the device toggle speed by the use of liquid nitrogen as cooling agent is very fast, phase
Than in mechanical refrigeration, liquid nitrogen can reach operating temperature at faster speed.
3rd, liquid nitrogen is provided as cooling agent using liquid nitrogen storage tank, can largely reduce the use of dynamic equipment, make device
Maintenance cost is reduced.
4th, factory uses nitrogen as the occasion of process gas, mostly using air vaporizer, is changed by liquid nitrogen and air
Thermosetting nitrogen, supply backend process is used；This part cold energy of actually liquid nitrogen can be utilized to as tail gas condensing, have
The low-temperature receiver of machine solvent recovery, because liquid nitrogen and tail gas are indirect heat exchanges, is not directly contacted with, so, this part nitrogen is still pure
Net nitrogen, can be incorporated to plant area's Nitrogen pipe network recycling after vaporizer heating and pressure regulation.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the processing scheme figure that prior art handles tail gas；
Fig. 2 is the utility model structural representation；
Fig. 3 is the fundamental diagram that the condenser of the utility model first is run, the second condenser defrosts；
Fig. 4 is the operation of the condenser of the utility model first, the fundamental diagram of the second condenser precooling；
Fig. 5 is the fundamental diagram that the condenser of the utility model first is defrosted, the second condenser is run；
Numeral and the corresponding component title represented by letter in figure：
10th, liquid nitrogen storage tank 20, vaporizer 30, the first condenser 40, the second condenser 50, recovered liquid storage tank 60, not
Inlet exhaust gas 61 up to standard, external exhaust gas inlet manifold 62, dehydration device 70, offgas outlet up to standard 80, liquid nitrogen import 81,
Gas nitrogen inlet 90, solvent liquid outlet 100, gas nitrogen outlet 110, heater 120, liquid pump.
Embodiment
In order that technological means, creation characteristic, reached purpose and effect that the utility model is realized are easy to understand, under
Face combines and is specifically illustrating, and the utility model is expanded on further.
Referring to shown in Fig. 2 and Fig. 3, the utility model discloses a kind of deep cooling exhaust gas processing device, including vaporizer 20,
One condenser 30, the second condenser 40 and recovered liquid storage tank 50；Liquid nitrogen storage tank 10 is for storing liquid nitrogen and being two condensers
Liquid nitrogen is provided；Vaporizer 20 is used to heat the gas nitrogen generated in two condensers, makes its temperature recovery to technique nitrogen
Temperature in use；Recovered liquid storage tank 50 is connected with the first condenser 30 and the second condenser 40 respectively, for receiving the first condenser
30 and second are condensed in condenser 40 recovered solvent liquid.
First condenser 30 goes out provided with below standard inlet exhaust gas 60, the tail gas up to standard with the internal switching of the first condenser 30
Mouth 70, liquid nitrogen import 80, gas nitrogen inlet 81, solvent outlet 90 and gas nitrogen outlet 100；Below standard inlet exhaust gas 60 and outside tail
Gas inlet manifold 61 connects, and below standard tail gas enters first by external exhaust gas inlet manifold 61 from below standard inlet exhaust gas 60
In condenser 30, dehydration device 62, dehydration device 62 are provided between external exhaust gas inlet manifold 61 and below standard inlet exhaust gas 60
For removing the moisture in below standard tail gas, to reduce the frosting of the first condenser of rear end 30, so as to improve the first condenser 30
Heat exchange efficiency；Offgas outlet 70 up to standard is provided with the first valve A1, and liquid nitrogen import 80 is stored up by a pipeline with outside liquid nitrogen
Tank 10 is connected, and the pipeline is provided with the first valve A3, and gas nitrogen inlet 81 is connected by a pipeline with outside gas nitrogen pipe road, the pipe
Road is provided with the first valve A2, and solvent liquid outlet 90 is connected with recovered liquid storage tank 50, and gas nitrogen outlet 100 passes through pipeline and vaporization
Device 20 is connected, and the pipeline between gas nitrogen outlet 100 and vaporizer 20 is provided with the first valve A4；The condensations of first valve A2 and first
Pipeline between device 30 is provided with heater 110.
Second condenser 40 goes out provided with below standard inlet exhaust gas 60, the tail gas up to standard with the internal switching of the second condenser 40
Mouth 70, liquid nitrogen import 80, gas nitrogen inlet 81, solvent outlet 90 and gas nitrogen outlet 100；Below standard inlet exhaust gas 60 and outside tail
Gas inlet manifold 61 connects, and below standard tail gas enters second by external exhaust gas inlet manifold 61 from below standard inlet exhaust gas 60
In condenser 40, dehydration device 62, dehydration device 62 are provided between external exhaust gas inlet manifold 61 and below standard inlet exhaust gas 60
For removing the moisture in below standard tail gas, to reduce the frosting of the second condenser of rear end 40, so as to improve the second condenser 40
Heat exchange efficiency；Offgas outlet 70 up to standard is provided with the second valve B1, and liquid nitrogen import 80 is stored up by a pipeline with outside liquid nitrogen
Tank 10 is connected, and the pipeline is provided with the second valve B3, and gas nitrogen inlet 81 is connected by a pipeline with outside gas nitrogen pipe road, the pipe
Road is provided with the second valve B2, and solvent liquid outlet 90 is connected with recovered liquid storage tank 50, and gas nitrogen outlet 100 passes through pipeline and vaporization
Device 20 is connected, and the pipeline between gas nitrogen outlet 100 and vaporizer 20 is provided with the second valve B4；The condensations of second valve B2 and second
Pipeline between device 40 is provided with heater 110.
According to the principle of material phase-state change, when exhaust temperature is reduced to saturation temperature of the VOC materials under current pressure
When, the VOC materials in tail gas will be condensed into liquid, and temperature is lower, and the VOC liquid being condensed out will be more, correspondingly
VOC gas concentrations will drop lower；When temperature is reduced to the fusing point of VOC materials, VOC materials directly will sublimate from gaseous state
For solid-state, on the outside of the pipe wall of heat exchange pipe for being attached to condenser, while the moisture remained in tail gas can also adhere in frosting at low temperature
In pipe wall of heat exchange pipe；In theory, liquid nitrogen drops to temperature in condenser below VOC melting point substances, and the rate of recovery of VOC materials is most
Height, the consumption of certain liquid nitrogen can also be increased；So, this is needed on the basis of discharge standard is met, and goes to find one
Economic balance point；Reaching the tail gas of discharge standard directly will be disposed in air.
The gas nitrogen that flowed out from condenser, liquid nitrogen is formed after gasification is because not in contact with any tail gas or contaminated, institute
It is secondary use using may return in Nitrogen pipe network as technique nitrogen；But, the gas nitrogen temperature of condensator outlet is still
Than relatively low, so needing to heat gas nitrogen by vaporizer, until temperature recovery to technique nitrogen temperature in use.
Deep cooling exhaust gas processing device critical piece is condenser, and exhaust gas passes and the supporting control valve of liquid nitrogen path
Part, realize condenser temperature setting control and liquid nitrogen flow control PLC control system, in addition recovered liquid storage tank then match somebody with somebody on demand
Put；Condenser is the core component of this covering device, tail gas and liquid nitrogen carry out heat exchange by condenser, so condenser is changed
The thermal efficiency directly determines the efficiency of solvent recovery in tail gas, that is, determines the concentration of exhaust emissions；With regard to this demand, first is set
Condenser, the second condenser are the condenser of fin shell and tube, using FIN-TUBE stainless steel heat exchange tubes, while in exhaust gas flow direction
It is upper to use radial direction deflector to extend exhaust gas flow path, the residence time of extension tail gas within the condenser, reach preferably heat exchange effect
Rate.
In order to reach optimal recovering effect, generally require to make condenser working in very low temperatures, so condensation
The phenomenon of frosting occurs on the heat exchanger tube of device；In order to ensure the continuity of vent gas treatment, we devise the dress of double-condenser
Put, two condensers periodically alternate run or is defrosted and is ensured continual vent gas treatment by programme-control.
Shown in Figure 3, the first condenser 30 is in running status, and the second condenser 40 is in defrosting state, and now the
Valve A1 and valve A3 on one condenser 30 are opened, while valve A2 is closed；Tail gas is in the first condenser 30 and by way of valve
The liquid nitrogen (LIN) that door A3 enters is exchanged heat, and is cooled and condensed after recovery, air is expelled to by way of valve A1；At the same time,
Valve B1 and valve B3 on second condenser 40 are closed, while valve B2 is opened, gas nitrogen (GAN) flows through valve B2 and heater
Become hot nitrogen after 110, heating defrosting is carried out into the second condenser 40 exchange heat pipe；In the defrosting cycle knot of the second condenser 40
After beam, it is necessary to by a precooling process, make condenser from the temperature drop after hot nitrogen heating before putting into operation again
It is low to the low-temperature condition normally run.
Shown in Figure 4, the first condenser 30 is in running status, and the second condenser 40 is in pre-cold state, and now the
One condenser still maintains the normal work in Fig. 3 flows to load, and the valve B2 on the second condenser 40 is closed, while valve
B1 and valve B3 is opened；Liquid nitrogen (LIN) flows through valve B3 and cooled down into the second condenser exchange heat pipe；It is cold second
After the precooling of condenser 40 terminates, after the heat exchanger tube frosting of the first condenser reaches to a certain degree, two condensers need to change
Working condition.
Shown in Figure 5, the first condenser 30 starts defrosting, and the second condenser 40 puts into operation at tail gas
Reason, now valve A1 and valve A3 is closed on the first condenser, while valve A2 is opened, gas nitrogen (GAN) flows through valve A2 and added
Become hot nitrogen after hot device 110, heating defrosting is carried out into the first condenser 30 exchange heat pipe；At the same time, the second condenser
Valve B1 and valve B3 on 40 are opened, while valve B2 is closed；What tail gas entered in the second condenser and by way of valve B3
Liquid nitrogen (LIN) is exchanged heat, and is cooled and condensed after recovery, air is expelled to by way of valve B1.
The recovered solvent liquid that is condensed voluntarily flows into recovered liquid storage tank 50, then is delivered to specified place by liquid pump 120.
General principle of the present utility model and principal character and advantage of the present utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the utility model is not restricted to the described embodiments, described in above-described embodiment and specification
Simply illustrate principle of the present utility model, on the premise of the utility model spirit and scope are not departed from, the utility model is also
Various changes and modifications are had, these changes and improvements are both fallen within the range of claimed the utility model.The utility model
Claimed scope is by appended claims and its equivalent thereof.
Claims (5)
1. a kind of deep cooling exhaust gas processing device, it is characterised in that the deep cooling exhaust gas processing device includes：
One vaporizer, for being heated to the gas nitrogen after liquid nitrogen gasification, supply rear end is used；
First condenser, first condenser is provided with and the below standard inlet exhaust gas of the first condenser internal switching, up to standard
Offgas outlet, liquid nitrogen import, gas nitrogen inlet, solvent outlet and the outlet of gas nitrogen；Below standard inlet exhaust gas and external exhaust gas air inlet
House steward is connected, and offgas outlet up to standard is provided with the first valve A1, and liquid nitrogen import is connected by a pipeline with outside liquid nitrogen storage tank,
The pipeline is provided with the first valve A3, and gas nitrogen inlet is connected by a pipeline with outside gas nitrogen pipe road, and the pipeline is provided with the
One valve A2, solvent liquid outlet be connected with recovered liquid storage tank, gas nitrogen outlet be connected by pipeline with vaporizer, gas nitrogen export and
Pipeline between vaporizer is provided with the first valve A4；Pipeline between first valve A2 and the first condenser is provided with heating
Device；
Second condenser, second condenser is provided with and the below standard inlet exhaust gas of the second condenser internal switching, up to standard
Offgas outlet, liquid nitrogen import, gas nitrogen inlet, solvent outlet and the outlet of gas nitrogen；Below standard inlet exhaust gas and external exhaust gas air inlet
House steward is connected, and offgas outlet up to standard is provided with the second valve B1, and liquid nitrogen import is connected by a pipeline with outside liquid nitrogen storage tank,
The pipeline is provided with the second valve B3, and gas nitrogen inlet is connected by a pipeline with outside gas nitrogen pipe road, and the pipeline is provided with the
Two valve B2, solvent liquid outlet be connected with recovered liquid storage tank, gas nitrogen outlet be connected by pipeline with vaporizer, gas nitrogen export and
Pipeline between vaporizer is provided with the second valve B4；Pipeline between second valve B2 and the second condenser is provided with heating
Device；
One recovered liquid storage tank, recovered liquid storage tank is connected with the first condenser and the second condenser respectively, is condensed for receiving first
Be condensed recovered solvent liquid in device and the second condenser.
2. a kind of deep cooling exhaust gas processing device according to claim 1, it is characterised in that first condenser, second
Heat exchanger tube in condenser is stainless steel heat exchange tube.
3. a kind of deep cooling exhaust gas processing device according to claim 1, it is characterised in that first condenser, second
Deflector in condenser is the deflector being radially arranged.
4. a kind of deep cooling exhaust gas processing device according to claim 1, it is characterised in that first condenser, second
Condenser is fin shell and tube condenser.
5. a kind of deep cooling exhaust gas processing device according to claim 1, it is characterised in that the external exhaust gas inlet manifold
Dehydration device is provided between below standard inlet exhaust gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720186140.1U CN206549398U (en) | 2017-02-28 | 2017-02-28 | A kind of deep cooling exhaust gas processing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720186140.1U CN206549398U (en) | 2017-02-28 | 2017-02-28 | A kind of deep cooling exhaust gas processing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206549398U true CN206549398U (en) | 2017-10-13 |
Family
ID=60360864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720186140.1U Active CN206549398U (en) | 2017-02-28 | 2017-02-28 | A kind of deep cooling exhaust gas processing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206549398U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110575734A (en) * | 2019-10-24 | 2019-12-17 | 青岛科技大学 | gaseous cryrogenic recovery unit of VOCs based on industry is cold useless |
| CN115068969A (en) * | 2022-06-10 | 2022-09-20 | 江苏大恒环保设备制造有限公司 | Benzene tail gas condensation recovery treatment method and device |
-
2017
- 2017-02-28 CN CN201720186140.1U patent/CN206549398U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110575734A (en) * | 2019-10-24 | 2019-12-17 | 青岛科技大学 | gaseous cryrogenic recovery unit of VOCs based on industry is cold useless |
| CN115068969A (en) * | 2022-06-10 | 2022-09-20 | 江苏大恒环保设备制造有限公司 | Benzene tail gas condensation recovery treatment method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103203157B (en) | Dichloromethane waste gas treating method and system thereof | |
| CN101564635B (en) | Method and device for recovering gas containing water-soluble organic compounds | |
| CN205084577U (en) | Retrieve device that multicomponent high concentration low discharge is interrupted organic waste gas active ingredient | |
| CN206549398U (en) | A kind of deep cooling exhaust gas processing device | |
| CN103084043A (en) | High-efficiency spraying solvent recovery system and process thereof | |
| CN104436988A (en) | Industrial organic waste gas treatment and cleaning process | |
| CN104801148A (en) | Environment-friendly treatment and recovery method and device for industrial waste gas containing VOCs (volatile organic compounds) | |
| CN108744852A (en) | A kind of organic waste gas treatment system | |
| CN106422647B (en) | Low liquefaction temperature organic waste gas recovery device | |
| CN105727681A (en) | Device and processing process for high-boiling-point organic waste gas | |
| CN208990499U (en) | A kind of tower high boiling solvent absorption VOC and recycle device | |
| CN110227329A (en) | Waste gas treatment process in a kind of production of cyanate ester resin | |
| CN109731433A (en) | The ethyl acetate recovery method combined is adsorbed with runner using activated carbon adsorption | |
| CN101530713B (en) | Recovering and purifying device of organic solvent and method | |
| CN111714917A (en) | VOC (volatile organic compound) treatmentSMulti-stage gradient indirect condensing device and process for waste gas | |
| CN104874199B (en) | Condensation at low temperature is used to carry out the apparatus system of VOC removal | |
| CN204767539U (en) | Application low temperature condensation method carries out device system that VOC got rid of | |
| CN115089992B (en) | Shallow cooling adsorption and desorption VOCs gas recovery method | |
| CN110697822A (en) | Method for recycling waste solvent of coating varnish | |
| CN110590633A (en) | Combined type NMP recovery system | |
| CN102476011A (en) | Waste gas recovery method in printing packaging industry | |
| CN211199075U (en) | Combined type NMP recovery plant | |
| CN204522681U (en) | A kind of containing volatile organic matter industrial waste gas environment protection treating retracting device | |
| WO2021047146A1 (en) | System for treating industrial tail gas containing ethylene glycol, and usage method therefor | |
| CN211346474U (en) | Volatile organic compound recovery device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181108 Address after: 201822 J834 room 6, 1288 Yecheng Road, Jiading District, Shanghai. Patentee after: Shi Yao Industrial Technology (Shanghai) Co., Ltd. Address before: 201807 room 144, 3, Lou Lu 1023, Jiading District, Shanghai. Patentee before: Shanghai lion low temperature gas application technology Co., Ltd. |
|
| TR01 | Transfer of patent right |