CN207996539U - A kind of large-wind-volume low-concentration organic exhaust gas processing unit - Google Patents
A kind of large-wind-volume low-concentration organic exhaust gas processing unit Download PDFInfo
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- CN207996539U CN207996539U CN201721845016.8U CN201721845016U CN207996539U CN 207996539 U CN207996539 U CN 207996539U CN 201721845016 U CN201721845016 U CN 201721845016U CN 207996539 U CN207996539 U CN 207996539U
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Abstract
The utility model is related to a kind of large-wind-volume low-concentration organic exhaust gas processing units.Described device includes purification system and processing system, and the purification system includes by the sequentially connected filter of pipeline, molecular sieve runner, discharge wind turbine;The purification system further includes heat exchanger.The processing system includes by the sequentially connected surface cooler of pipeline, absorption wind turbine, activated carbon adsorption bed, desorption wind turbine, condensing unit, online oxygen content analytical equipment, heater;The condensing unit includes condenser and recycling liquid storage tank.Using molecular sieve wheel device characteristic, large-wind-volume low-concentration exhaust gas is concentrated, becomes the exhaust gas of small air quantity middle and high concentration, processing system carries out recycling and administration using activated carbon adsorption-nitrogen desorption recovery technology, organic solvent is recycled while handling organic exhaust gas.The tail gas qualified discharge of the utility model, organic efficiency is high, cost of investment is low, floor space is small, realizes the recycling of resource.
Description
Technical field
The utility model is related to a kind of large-wind-volume low-concentration organic exhaust gas processing units.
Background technology
With increasingly severe, national to have promulgated the environmental requirement being increasingly stringenter, the stringent limitation tail gas row of atmosphere pollution
Concentration is put, this proposes improvement to those discharge enterprises that air quantity is big, concentration is low and requires.Currently, for Wind Volume, low concentration
VOCs treatment mostly uses activated carbon adsorption concentration combination oxidation technology and is administered.That there is equipment investments is big for the method, accounts for
The problems such as ground area is wide, operating cost is high, purification efficiency is low so that there are larger offices for the application of activated carbon adsorption concentration technique
Limit.In addition single for component organic exhaust gas with recovery value not only causes carbon emission using oxidation technology, and
It is disagreed with China's Implementation of Recycling Economy thought.And traditional activated carbon adsorption purification techniques can not ensure the row up to standard of tail gas
Put, in order to ensure the qualified discharge of tail gas, most of engineerings using two level or three-level absorption handled, the method not there is only
Cost of investment is high, the shortcomings that taking up a large area, and complex process, control point is more, and operating cost is high, especially for Wind Volume
The improvement of low concentration, the disadvantage are particularly evident.
Utility model content
The utility model is in view of the above-mentioned problems, propose a kind of large-wind-volume low-concentration organic exhaust gas processing unit, cost of investment
Low and floor space is small.
The utility model is realized in this way:
A kind of large-wind-volume low-concentration organic exhaust gas processing unit, including purification system and processing system;The purification system
Including passing through the sequentially connected filter of pipeline, molecular sieve runner, discharge wind turbine;The molecular sieve runner is divided into three areas, point
Not Wei adsorption zone, desorption area and cooling zone, through the purified tail gas of adsorption zone directly by discharging wind turbine through smoke stack emission;It is described
Purification system further includes heat exchanger, and the heat exchanger inlet end is connected to the cooling zone, the heat exchanger outlet side with it is described
Area's connection is desorbed.Enter processing system through the gas that area comes out is desorbed.
The processing system includes by the sequentially connected surface cooler of pipeline, absorption wind turbine, activated carbon adsorption bed, desorption wind
Machine, condensing unit, online oxygen content analytical equipment, heater;The condensing unit includes condenser and recycling liquid storage tank;Nitrogen
Nitrogen circulation pipeline is formed through wind turbine, condensing unit, online oxygen content analytical equipment, heater, activated carbon adsorption bed is desorbed.
The processing system configures two activated carbon adsorption beds, and in adsorption cleaning, another charcoal bed carries out a charcoal bed
Desorption and regeneration, they are switched over by the time difference, to ensure continuously running for system;That is an activated carbon adsorption bed absorption one
After fixing time, when absorption exit concentration is up to enterprise's discharge exhaust gas concentration, desorption is absorbed into again by valve transfer stopping
Raw stage, another charcoal bed then enter absorption phase.
The device of the utility model passes through the testing numbers such as temperature, pressure, oxygen concentration to system by PLC control program system
According to analyzing processing complete, whole process automatically controls.
The utility model utilizes molecular sieve wheel device characteristic, and large-wind-volume low-concentration exhaust gas is concentrated, small wind is become
The exhaust gas for measuring middle and high concentration, on the one hand purifies the tail gas of discharge, on the one hand can greatly reduce matching for aftertreatment systems
It sets.The processing system of the utility model configuration carries out recycling and administration using activated carbon adsorption-nitrogen desorption recovery technology, is handling
Organic solvent is recycled while organic exhaust gas, is turned waste into wealth, and realizes the recycling of resource.
The utility model has the following advantages that:
1. qualified discharge, organic efficiency are high, cost of investment is low, floor space is small;
2. realizing tail gas qualified discharge by molecular sieve runner purification system, and large-wind-volume low-concentration organic exhaust gas is concentrated
For small air quantity, the exhaust gas of middle and high concentration, the scale of back-end processing system is greatly reduced;
3. recovery system is desorbed using activated carbon adsorption-nitrogen in the mating processing system in the utility model rear end, administering
Organic solvent is recycled while organic exhaust gas, is turned waste into wealth, and realizes the recycling of resource.
4. because molecular sieve runner system has high requirement to pending gas humidity, and nitrogen desorption system uses
Dry clean nitrogen can be arranged 100 according to constitutive property as desorption heat carrier, the anhydrous participation of overall process, and desorption temperature~
Between 200 DEG C, desorption is more thorough, therefore, has greater advantage compared with traditional vapor desorption recovery system.
Description of the drawings
The utility model is further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the structural schematic diagram of the utility model.
Each label indicates as follows in figure:1. filter;2. molecular sieve runner, 21 adsorption zones, 22 desorption areas, 23 cooling zones;
3. discharging wind turbine;4. heat exchanger;5. surface cooler;6. adsorbing wind turbine;7/8. activated carbon adsorption bed;9. wind turbine is desorbed;10. condensation
Device;11. recycling liquid storage tank;12. online oxygen content analytical equipment;13. heater.
Specific implementation mode
Embodiment 1
As shown in Figure 1, the device of the utility model is made of purification system and processing system two parts:
(1) purification system includes (being contained for filtering in the exhaust gas of front end by the sequentially connected high efficiency particulate air filter of pipeline 1
Some impurity particles, to protect the service life and purification efficiency of rear end molecular sieve runner), molecular sieve runner 2, discharge wind turbine 3;
The molecular sieve runner 2 is by the organic waste gas concentrating of large-wind-volume low-concentration at the organic exhaust gas of small air quantity middle and high concentration, runner system
System is divided into three areas, adsorption zone 21, desorption area 22 and cooling zone 23.21 function of adsorption zone is mainly adsorption cleaning organic exhaust gas;
It is mainly to carry out high temperature regeneration to the molecular sieve after adsorption saturation that 22 function of area, which is desorbed,;23 function of cooling zone mainly to regeneration after
High temperature molecular sieve cool down;Through 21 purified tail gas of adsorption zone directly by discharging wind turbine 3 through smoke stack emission;Institute
It further includes heat exchanger 4 to state purification system, and 4 inlet end of the heat exchanger is connected to the cooling zone 23,4 outlet side of the heat exchanger
It is connected to the desorption area 22.Enter processing system through the gas that area 22 comes out is desorbed.
Purification system is handled using molecular sieve runner 2.Runner can be according to exhaust-gas treatment amount, with 1~6 turn/hour
Speed continues slowly to rotate.The VOCs contained in exhaust gas is intercepted inside 21 molecular sieve of adsorption zone, purified pure air
Then it is directly discharged to air.Runner continues Rotary adsorption VOCs, and when runner is rotated into desorption area 22, heat exchanger provides
180~220 DEG C or so of high-temperature hot air, purges the runner region (desorption area 22) of adsorption saturation, under high temperature, is adsorbed on molecule
VOCs inside sieve is desorbed and take away, and runner restores adsorption capacity.Runner after desorption rotates into cooling zone 23, warp
Cooling air purges, and restores to room temperature to rotate the absorption for restarting next round to adsorption zone again.It is de- when runner is desorbed
Attached air quantity is small, can greatly reduce the scale of back-end processing system.
(2) processing system includes by the sequentially connected surface cooler 5 of pipeline, absorption 6,2 activated carbon adsorptions of wind turbine
Bed 7/8, desorption wind turbine 9, condensing unit, online oxygen content analytical equipment 12, heater 13;The condensing unit includes condenser
10 and recycling liquid storage tank 11;The processing system can also be divided into activated carbon adsorption system and desorption system, institute according to function
State activated carbon adsorption system include by the sequentially connected surface cooler 5 of pipeline, absorption wind turbine 6, activated carbon adsorption bed 7 (or absorption
Bed is 8);The activated carbon desorption system includes by the sequentially connected desorption wind turbine 9 of pipeline, condensing unit, online oxygen content point
Analysis apparatus 12, heater 13, activated carbon adsorption bed 7 (or adsorbent bed 8).Nitrogen enters desorption system through wind turbine 9, condensation list is desorbed
First, online oxygen content analytical equipment 12, heater 13, activated carbon adsorption bed 7 (or adsorbent bed 8) form nitrogen circulation pipeline.
Processing system uses activated carbon adsorption-nitrogen desorption-condensing recovery Treatment process.The tail discharged after activated carbon adsorption
Gas is re-fed into molecular sieve runner and carries out purified treatment, it is ensured that tail gas qualified discharge.
The utility model specifically comprises the following steps:
(1) front end organic exhaust gas first passes around high efficiency particulate air filter 1 and is pre-processed, the dust of removal front end organic exhaust gas,
Particulate matter etc., filtration grade reaches F9 grades, to ensure the service life and purification efficiency of rear end zeolite runner 2;After pretreatment
Organic exhaust gas flow through runner adsorption zone 21, wherein organic component is blocked, and clean gas is arrived through smoke stack emission after purification
In air.
(2) runner is persistently rotated is sent to desorption area 22 by the volatile organic matter of absorption over a molecular sieve, and at 180 DEG C
The lasting purging of~220 DEG C small air quantity gas (account for about processing air quantity 5%~15%), volatile organic matter are desorbed from molecular sieve
Get off, and back-end processing system is sent into air-flow, desorption 22 molecular sieve of area is regenerated.
Molecular sieve after regeneration rotates into cooling zone 23, and fresh air outside can be used in refrigerant, can also use front end
Organic exhaust gas.By flowing through cooling zone 23 after valve regulated cooling air quantity, and carries out heat exchange with 23 molecular sieve of cooling zone and make
Molecular sieve is cooled down, and the molecular sieve rotation after cooling transfers to adsorption zone 21, persistently to carry out adsorption treatment to organic components.
The cooling air quantity that 22 air quantity of area derives from cooling zone 23 is desorbed.Cooling airflow obtains tentatively after the molecular sieve of cooling zone
180~220 DEG C of temperature post-purges are heated to by heat exchanger 4 again after heating, 22 molecular sieve of area is desorbed;
(3) molecular sieve runner 2 is desorbed the organic exhaust gas concentration that 22 high-temperature blowing of area gets off and can be turned according to molecular sieve runner 2
Velocity modulation section.The gas that stripping gets off, temperature 60 C~80 DEG C need to be sent into activity after surface cooler 5 carries out cooling through adsorbing wind turbine 6
Charcoal bed 7 (or adsorbent bed 8) adsorption treatment, the tail gas after absorption send purification system back to again, it is ensured that tail gas qualified discharge.
Active-carbon bed desorption and regeneration employs nitrogen as desorption medium in processing system, and activated carbon is adopted before desorption and regeneration
Condenser, heater, charcoal bed to be desorbed and the system pipeline etc. of connection are purged through wind turbine is desorbed with dry clean nitrogen, purport
Oxygen and steam in removal desorption system in gas phase, and ensure that oxygen is dense in desorption system using online oxygen content analytical equipment
Degree is less than 2%;Then it is heated in desorption system after nitrogen to desorption temperature by heater 13, activated carbon adsorption bed 7 (or is inhaled
Attached bed 8) stripping is carried out, organic component is desorbed from activated carbon under high temperature, and activated carbon restores its activity, is desorbed from charcoal bed
The high-concentration organic waste gas to get off enters the condensation of condenser 10, and condensate liquid is stored in recycling liquid storage tank 11 and recycles, and not cold
Solidifying gas then continues to carry out activated carbon adsorption bed 7 (or adsorbent bed 8) after heated device 13 is heated to the desorption temperature of setting
Stripping realizes recycling for nitrogen.Activated carbon adsorption bed 7 (or adsorbent bed 8) is recycled by hot nitrogen and is desorbed, activated carbon institute
The organic matter of absorption is desorbed substantially, to achieve the purpose that desorption and regeneration.The desorption temperature of desorption system can be according to need
It is set between 100~200 DEG C, is desorbed compared with traditional vapor, desorption temperature higher, more thorough, organic efficiency is desorbed
Up to 90% or more.
Although the foregoing describe specific embodiment of the present utility model, those familiar with the art answers
Working as understanding, we are merely exemplary described specific embodiment, rather than for the limit to the scope of the utility model
Fixed, those skilled in the art modification and variation equivalent made by the spirit according to the utility model all should
Cover in the scope of the claimed protection of the utility model.
Claims (2)
1. a kind of large-wind-volume low-concentration organic exhaust gas processing unit, including purification system and processing system, it is characterised in that:It is described
Purification system includes by the sequentially connected filter of pipeline, molecular sieve runner, discharge wind turbine;The molecular sieve runner is divided into three
A area, respectively adsorption zone, desorption area and cooling zone are directly arranged by discharging wind turbine through chimney through the purified tail gas of adsorption zone
It puts;The purification system further includes heat exchanger, and the heat exchanger inlet end is connected to the cooling zone, the heat exchanger outlet side
It is connected to the desorption area;Enter processing system through the gas that area comes out is desorbed;
The processing system include by the sequentially connected surface cooler of pipeline, absorption wind turbine, activated carbon adsorption bed, desorption wind turbine,
Condensing unit, online oxygen content analytical equipment, heater;The condensing unit includes condenser and recycling liquid storage tank;Nitrogen passes through
Wind turbine, condensing unit, online oxygen content analytical equipment, heater, activated carbon adsorption bed is desorbed and forms nitrogen circulation pipeline.
2. large-wind-volume low-concentration organic exhaust gas processing unit according to claim 1, it is characterised in that:The processing system
Configure two activated carbon adsorption beds.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721845016.8U CN207996539U (en) | 2017-12-26 | 2017-12-26 | A kind of large-wind-volume low-concentration organic exhaust gas processing unit |
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| CN201721845016.8U CN207996539U (en) | 2017-12-26 | 2017-12-26 | A kind of large-wind-volume low-concentration organic exhaust gas processing unit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108079740A (en) * | 2017-12-26 | 2018-05-29 | 嘉园环保有限公司 | A kind of large-wind-volume low-concentration organic exhaust gas processing unit and method |
| CN110075665A (en) * | 2019-05-24 | 2019-08-02 | 上海兰宝环保科技有限公司 | A kind of zeolite concentration rotating wheel molecular sieve combination catalysis oxidation emission-control equipment and its processing method |
| TWI779384B (en) * | 2020-11-03 | 2022-10-01 | 傑智環境科技股份有限公司 | Organic waste gas adsorption, desorption, concentration and purification system and method capable of increasing temperature and controlling humidity |
-
2017
- 2017-12-26 CN CN201721845016.8U patent/CN207996539U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108079740A (en) * | 2017-12-26 | 2018-05-29 | 嘉园环保有限公司 | A kind of large-wind-volume low-concentration organic exhaust gas processing unit and method |
| CN110075665A (en) * | 2019-05-24 | 2019-08-02 | 上海兰宝环保科技有限公司 | A kind of zeolite concentration rotating wheel molecular sieve combination catalysis oxidation emission-control equipment and its processing method |
| TWI779384B (en) * | 2020-11-03 | 2022-10-01 | 傑智環境科技股份有限公司 | Organic waste gas adsorption, desorption, concentration and purification system and method capable of increasing temperature and controlling humidity |
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