CN108079740A - A kind of large-wind-volume low-concentration organic exhaust gas processing unit and method - Google Patents
A kind of large-wind-volume low-concentration organic exhaust gas processing unit and method Download PDFInfo
- Publication number
- CN108079740A CN108079740A CN201711428911.4A CN201711428911A CN108079740A CN 108079740 A CN108079740 A CN 108079740A CN 201711428911 A CN201711428911 A CN 201711428911A CN 108079740 A CN108079740 A CN 108079740A
- Authority
- CN
- China
- Prior art keywords
- activated carbon
- exhaust gas
- desorption
- molecular sieve
- wind
- 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.)
- Pending
Links
- 238000012545 processing Methods 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 109
- 239000007789 gas Substances 0.000 claims abstract description 85
- 238000003795 desorption Methods 0.000 claims abstract description 65
- 238000001179 sorption measurement Methods 0.000 claims abstract description 61
- 239000002808 molecular sieve Substances 0.000 claims abstract description 53
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 53
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 43
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 23
- 238000010521 absorption reaction Methods 0.000 claims abstract description 22
- 238000004140 cleaning Methods 0.000 claims abstract description 21
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000001301 oxygen Substances 0.000 claims abstract description 19
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 19
- 238000004064 recycling Methods 0.000 claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 238000003860 storage Methods 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims description 29
- 230000008929 regeneration Effects 0.000 claims description 17
- 238000011069 regeneration method Methods 0.000 claims description 17
- 238000010926 purge Methods 0.000 claims description 12
- 239000003610 charcoal Substances 0.000 claims description 8
- 238000000746 purification Methods 0.000 claims description 8
- 239000005416 organic matter Substances 0.000 claims description 7
- 239000010815 organic waste Substances 0.000 claims description 7
- 239000000779 smoke Substances 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 238000009833 condensation Methods 0.000 claims description 4
- 230000005494 condensation Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 238000005111 flow chemistry technique Methods 0.000 claims description 2
- 238000007872 degassing Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 8
- 239000012855 volatile organic compound Substances 0.000 abstract description 7
- 238000011084 recovery Methods 0.000 abstract description 6
- 239000003960 organic solvent Substances 0.000 abstract description 3
- 239000003463 adsorbent Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
- B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/06—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention belongs to VOCs treatment field more particularly to a kind of large-wind-volume low-concentration organic exhaust gas processing units and method.Described device includes cleaning system and processing system, and the cleaning system is included through the sequentially connected filter of pipeline, molecular sieve runner, discharge wind turbine；The cleaning system further includes heat exchanger.The processing system is included through 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 organic exhaust gas is handled.The tail gas qualified discharge of the present invention, organic efficiency is high, cost of investment is low, floor space is small, realizes the recycling of resource.
Description
Technical field
The invention belongs to VOCs treatment field more particularly to a kind of large-wind-volume low-concentration organic exhaust gas processing unit and
Method.
Background technology
With increasingly severe, national to have promulgated increasingly stringenter environmental requirement, the stringent limitation tail gas row of atmosphere pollution
Concentration is put, this proposes improvement requirement to those discharge enterprises that air quantity is big, concentration is low.At present, for Wind Volume, low concentration
VOCs treatment is mostly administered using activated carbon adsorption concentration combination oxidation technology.The method is big there is equipment investment, 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 for component it is single, have recovery value organic exhaust gas carbon emission is not only caused 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
It puts, in order to ensure the qualified discharge of tail gas, most of engineerings are handled using two level or three-level absorption, which does not only exist
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 shortcoming are particularly evident.
The runner Adsorption Concentration carried out in recent years becomes domestic VOCs due to the advantages that its purification efficiency is high, and occupation of land face is small
Advanced technology in improvement field, is favored by users.Tail gas after runner Adsorption Concentration then passes through oxidation processes skill
Art is decomposed into CO2With outer row after water.
The content of the invention
The present invention is invested into view of the above-mentioned problems, propose a kind of large-wind-volume low-concentration organic exhaust gas processing unit and method
This low and floor space is small, is administered using molecular sieve runner concentration combination solvent recovery technology, realizes economic cycling profit
With.
What the present invention was realized in：
A kind of large-wind-volume low-concentration organic exhaust gas processing unit, including cleaning system and processing system；The cleaning 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
Cleaning system further includes heat exchanger, and the heat exchanger inlet end is connected with the cooling zone, the heat exchanger outlet side with it is described
It is desorbed area's connection.The gas come out through being desorbed area enters processing system.
The processing system is included through 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 being desorbed wind turbine, condensing unit, online oxygen content analytical equipment, heater, activated carbon adsorption bed.
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 operating procedure of described device is as follows：
(1) exhaust gas pretreatment unit
Organic exhaust gas first passes around filter and is pre-processed, and the trifle in the world in the exhaust gas of front end is removed, with end molecule after protection
Sieve the service life and absorption property of runner；
(2) clean unit
Organic exhaust gas after pretreatment flows through the adsorption zone of molecular sieve runner, and wherein organic component is blocked, only
Clean gas after change is through smoke stack emission into air；
As molecular sieve runner persistently rotates, the volatile organic matter adsorbed over a molecular sieve is transferred into desorption area, and
It is persistently purged in 180 DEG C~220 DEG C small air quantity gases, volatile organic matter is desorbed from molecular sieve, and is sent into air-flow
Processing system, desorption area's molecular sieve are regenerated；Molecular sieve after regeneration rotates into cooling zone, and cooled air purging is extensive
It is rotated again to adsorption zone after answering to room temperature, restarts the absorption of next round；
Wherein for purging the small air quantity gas source in desorption area in the cooling air quantity of cooling zone, cooling airflow is through cooling zone
Molecular sieve is heated to 180~220 DEG C of temperature by heat exchanger again after obtaining tentatively heating, then purging desorption area's molecular sieve；
(3) processing unit
Processing system carries out absorption and the desorption and regeneration of activated carbon, gets off through molecular sieve runner desorption area's stripping during absorption
Small air quantity, middle/high concentration organic waste gas enter activated carbon adsorption bed, most of organic waste after surface cooler cools down through adsorbing wind turbine
Gas is trapped by activated carbon, and the low-concentration organic exhaust gas not being tightly held by activated carbon is then fed again into cleaning system, and turns through molecular sieve
It is arranged outside by chimney after taking turns adsorption cleaning；
Active-carbon bed desorption and regeneration is employed nitrogen as desorption medium, and activated carbon is before desorption and regeneration using doing clean nitrogen
Condenser, heater, activated carbon adsorption bed to be desorbed and the system pipeline of connection are purged through being desorbed wind turbine, it is intended to go
Ensure that oxygen concentration is less than 2% in system except the oxygen and steam in gas phase, and using online oxygen content analytical equipment；Then pass through
Heater heated nitrogen carries out activated carbon adsorption bed stripping to after desorption temperature, and organic component takes off from activated carbon under high temperature
Attached to get off, activated carbon recovers its activity, is desorbed the high-concentration organic waste gas to get off and enters condenser condensation, condensate liquid is stored in back
It receives and is recycled in liquid storage tank, and uncooled gas then continues to inhale activated carbon after heated device is heated to the desorption temperature of setting
Attached bed carries out stripping, realizes recycling for nitrogen.
The air quantity of small air quantity gas described in step (2) accounts for the 5%~15% of processing air quantity.
The rotating speed of step (2) the molecular sieve runner is 1~6 turn/hour.
The technological process of the present invention passes through the testing numbers such as the temperature, pressure, oxygen concentration to system by PLC control program system
According to analyzing and processing complete, whole process automatically controls.
Large-wind-volume low-concentration exhaust gas is concentrated, become in small air quantity using molecular sieve wheel device characteristic by the present invention
On the one hand the exhaust gas of high concentration purifies the tail gas of discharge, on the one hand can greatly reduce the configuration of aftertreatment systems.This
The processing system of invention configuration carries out recycling and administration using activated carbon adsorption-nitrogen desorption recovery technology, in processing organic exhaust gas
While recycle organic solvent, turn waste into wealth, realize the recycling of resource.
The invention has the 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 cleaning 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. the mating processing system in rear end of the present invention is using activated carbon adsorption-nitrogen desorption recovery system, organic administering
Organic solvent is recycled while exhaust gas, is turned waste into wealth, realizes the recycling of resource.
4. because molecular sieve runner system has pending gas humidity high requirement, and nitrogen desorption system uses
Dry clean nitrogen can be arranged on 100 as desorption heat carrier, the anhydrous participation of overall process, and desorption temperature according to constitutive property~
Between 200 DEG C, desorption is more thorough, therefore, has greater advantage compared with traditional vapor desorption recovery system.
Description of the drawings
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the structural diagram of the present invention.
Each label represents as follows in figure：1. filter；2. molecular sieve runner, 21 adsorption zones, 22 desorption areas, 23 cooling zones；
3. discharge wind turbine；4. heat exchanger；5. surface cooler；6. adsorb wind turbine；7/8. activated carbon adsorption bed；9. it is desorbed wind turbine；10. condensation
Device；11. recycle liquid storage tank；12. online oxygen content analytical equipment；13. heater.
Specific embodiment
Embodiment 1
As shown in Figure 1, the device of the invention is made of cleaning system and processing system two parts：
(1) cleaning system includes (for filtering in the exhaust gas of front end containing by the sequentially connected high efficiency particulate air filter 1 of pipeline
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 into 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 to be desorbed 22 function of area；After 23 function of cooling zone is mainly to regeneration
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 states cleaning system and further includes heat exchanger 4,4 inlet end of heat exchanger is connected with the cooling zone 23,4 outlet side of heat exchanger
It is connected with the desorption area 22.The gas come out through being desorbed area 22 enters processing system.
Cleaning 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, adsorbs in molecule
VOCs inside sieve is desorbed and take away, and runner recovers adsorption capacity.Runner after desorption rotates into cooling zone 23, warp
Cooling air purges, and is rotated again to adsorption zone after recovering to room temperature, restarts the absorption of next round.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 is included through 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 is included through 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 being desorbed wind turbine 9, condensation list
First, online oxygen content analytical equipment 12, heater 13, activated carbon adsorption bed 7 (or adsorbent bed 8) form nitrogen circulation pipeline.
Processing system condenses recycling and administration technology using activated carbon adsorption-nitrogen is desorbed-.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 present invention 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 adsorbed over a molecular sieve, and at 180 DEG C
The lasting purging of~220 DEG C small air quantity gas (account for 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 carry out heat exchange with 23 molecular sieve of cooling zone and cause
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.
It is desorbed the cooling air quantity that 22 air quantity of area derives from cooling zone 23.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 and are desorbed 22 molecular sieve of area；
(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 is cooled down through adsorbing wind turbine 6
Charcoal bed 7 (or adsorbent bed 8) adsorption treatment, the tail gas after absorption send cleaning system back to again, it is ensured that tail gas qualified discharge.
Active-carbon bed desorption and regeneration is employed nitrogen as desorption medium in processing system, and activated carbon is adopted before desorption and regeneration
Condenser, heater, charcoal bed to be desorbed and system pipeline of connection etc. are purged through being desorbed wind turbine 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 nitrogen is heated in desorption system to after 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 recovers its activity, is desorbed from charcoal bed
The high-concentration organic waste gas to get off enters condenser 10 and condenses, 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 cycled by hot nitrogen and is desorbed, activated carbon institute
The organic matter of absorption is desorbed substantially, so as 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, be desorbed more thorough, organic efficiency
Up to more than 90%.
Although specific embodiments of the present invention have been described above, those familiar with the art should manage
Solution, our described specific embodiments are merely exemplary rather than for the restriction to the scope of the present invention, are familiar with this
The equivalent modification and variation that the technical staff in field is made in the spirit according to the present invention, should all cover the present invention's
In scope of the claimed protection.
Claims (6)
1. a kind of large-wind-volume low-concentration organic exhaust gas processing unit, including cleaning system and processing system, it is characterised in that：It is described
Cleaning system is included through the sequentially connected filter of pipeline, molecular sieve runner, discharge wind turbine；The molecular sieve runner is divided into three
A area is respectively adsorption zone, desorption area and cooling zone, is directly arranged through the purified tail gas of adsorption zone by discharging wind turbine through chimney
It puts；The cleaning system further includes heat exchanger, and the heat exchanger inlet end is connected with the cooling zone, the heat exchanger outlet side
It is connected with the desorption area；The gas come out through being desorbed area enters processing system；
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
It is desorbed wind turbine, condensing unit, online oxygen content analytical equipment, heater, activated carbon adsorption bed 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.
3. the method for large-wind-volume low-concentration organic exhaust gas processing is carried out using 1 or 2 described device of claim, it is characterised in that：
Step is as follows：
(1) exhaust gas pretreatment unit
Organic exhaust gas first passes around filter and is pre-processed, and removes the trifle in the world in the exhaust gas of front end, rear end molecular sieve to be protected to turn
The service life and absorption property of wheel；
(2) clean unit
Organic exhaust gas after pretreatment flows through the adsorption zone of molecular sieve runner, and wherein organic component is blocked, after purification
Clean gas through smoke stack emission into air；
As molecular sieve runner persistently rotates, the volatile organic matter adsorbed over a molecular sieve is transferred into desorption area, and 180
DEG C~220 DEG C small air quantity high-temperature gas persistently purges down, volatile organic matter is desorbed from molecular sieve, and is sent into air-flow
Processing system, desorption area's molecular sieve are regenerated；Molecular sieve after regeneration rotates into cooling zone, and cooled air purging is extensive
It is rotated again to adsorption zone after answering to room temperature, restarts the absorption of next round；
Wherein for purging the cooling air quantity that the small air quantity high-temperature gas in desorption area derives from cooling zone, cooling airflow is through cooling zone
Molecular sieve is heated to 180~220 DEG C of temperature by heat exchanger again after obtaining tentatively heating, then purging desorption area's molecular sieve；
(3) processing unit
Processing system carries out absorption and the desorption and regeneration of activated carbon, the small wind to get off through molecular sieve runner desorption area's stripping during absorption
Amount, middle/high concentration organic waste gas enter activated carbon adsorption bed, most of organic exhaust gas quilt after surface cooler cools down through adsorbing wind turbine
Activated carbon traps, and the low-concentration organic exhaust gas not being tightly held by activated carbon is then fed again into cleaning system, and is inhaled through molecular sieve runner
By being arranged outside chimney after attached purification；
Active-carbon bed desorption and regeneration is employed nitrogen as desorption medium, and activated carbon is before desorption and regeneration using dry clean nitrogen through de-
Attached wind turbine purges condenser, heater, activated carbon adsorption bed to be desorbed and the system pipeline of connection, it is intended to go degasification
Oxygen and steam in phase, and ensure that oxygen concentration is less than 2% in system using online oxygen content analytical equipment；Then heating is passed through
Device heated nitrogen is to after desorption temperature, carrying out activated carbon adsorption bed stripping, under organic component is desorbed from activated carbon under high temperature
Come, activated carbon recovers its activity, is desorbed the high-concentration organic waste gas to get off and enters condenser condensation, condensate liquid is stored in recovered liquid
It is recycled in storage tank, and uncooled gas then continues after heated device is heated to the desorption temperature of setting to activated carbon adsorption bed
Stripping is carried out, realizes recycling for nitrogen.
4. the method for large-wind-volume low-concentration organic exhaust gas processing according to claim 3, it is characterised in that：In step (2)
The air quantity of the small air quantity high-temperature gas accounts for the 5%~15% of processing air quantity.
5. the method for large-wind-volume low-concentration organic exhaust gas processing according to claim 3, it is characterised in that：Step (2) institute
The rotating speed for stating molecular sieve runner is 1~6 turn/hour.
6. the method for large-wind-volume low-concentration organic exhaust gas processing according to claim 3, it is characterised in that：When the processing
During two activated carbon adsorption beds of system configuration, for a charcoal bed in adsorption cleaning, another charcoal bed carries out desorption and regeneration, they are logical
Spending the time difference switches over, to ensure continuously running for system；I.e. an activated carbon adsorption bed is adsorbed, and adsorbs exit concentration
When reaching enterprise's discharge exhaust gas concentration, the desorption and regeneration stage is absorbed by valve transfer stopping, another activated carbon adsorption
Bed then enters absorption phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711428911.4A CN108079740A (en) | 2017-12-26 | 2017-12-26 | A kind of large-wind-volume low-concentration organic exhaust gas processing unit and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711428911.4A CN108079740A (en) | 2017-12-26 | 2017-12-26 | A kind of large-wind-volume low-concentration organic exhaust gas processing unit and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108079740A true CN108079740A (en) | 2018-05-29 |
Family
ID=62179124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711428911.4A Pending CN108079740A (en) | 2017-12-26 | 2017-12-26 | A kind of large-wind-volume low-concentration organic exhaust gas processing unit and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108079740A (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109529537A (en) * | 2018-12-29 | 2019-03-29 | 江苏苏净集团有限公司 | A kind of integrated simulation device of rotary-type waste gas pollution control and treatment |
| CN109550352A (en) * | 2018-11-09 | 2019-04-02 | 杨皓 | A kind of tail gas of sodium cyanide manufacture ammonia synthesis gas sulfur removal technology |
| CN109589744A (en) * | 2018-12-25 | 2019-04-09 | 德州奥深节能环保技术有限公司 | A kind of active carbon adsorption desorption technique |
| CN109794142A (en) * | 2019-02-04 | 2019-05-24 | 青岛飞普思环保科技有限公司 | The recovery process of oily waste water treatment factory discharge exhaust gas |
| CN110075658A (en) * | 2019-04-19 | 2019-08-02 | 同济大学 | A kind of the VOCs processing system and its processing method of room temperature condensation auxiliary purification |
| CN110465159A (en) * | 2019-07-25 | 2019-11-19 | 江苏苏净集团有限公司 | A kind of processing exhaust gas adsorption runner device |
| CN110975522A (en) * | 2019-12-20 | 2020-04-10 | 杭州捷瑞空气处理设备有限公司 | Large-air-volume medium-concentration ethyl acetate recovery device and recovery method thereof |
| CN111318128A (en) * | 2020-03-03 | 2020-06-23 | 青岛华世洁环保科技有限公司 | Adsorption recovery system for nitrogen regeneration and adsorption recovery method thereof |
| CN112337296A (en) * | 2019-08-07 | 2021-02-09 | 华懋科技股份有限公司 | Catalyst backflow high-efficiency organic waste gas treatment system and method thereof |
| CN113069885A (en) * | 2021-04-29 | 2021-07-06 | 孙绍堂 | Box-type moving bed waste gas purification system |
| CN113230883A (en) * | 2021-06-16 | 2021-08-10 | 中国科学院城市环境研究所 | Device and method for treating volatile organic compounds by coupling catalytic oxidation with molecular sieve rotating wheel |
| CN113304578A (en) * | 2020-02-26 | 2021-08-27 | 布罗芬德股份公司 | Apparatus and method for treating gaseous effluent |
| CN113719842A (en) * | 2021-08-27 | 2021-11-30 | 中船海洋动力部件有限公司 | VOCs processing system of high-efficient heat recovery |
| CN114225637A (en) * | 2021-11-18 | 2022-03-25 | 浙江菲达环保科技股份有限公司 | VOCs treatment system and method suitable for intermittent coating |
| CN115044398A (en) * | 2022-07-12 | 2022-09-13 | 上海克硫环保科技股份有限公司 | Coking flue gas tar removal system and method |
| CN115970665A (en) * | 2022-11-21 | 2023-04-18 | 广东工业大学 | Movable desorption system and method for double-channel carrier gas coupling adsorbent |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103585854A (en) * | 2013-10-29 | 2014-02-19 | 嘉园环保股份有限公司 | Technology for recovering and processing organic exhaust gas by activated carbon adsorption and N2 desorption |
| CN203556251U (en) * | 2013-09-25 | 2014-04-23 | 江苏中远环保科技有限公司 | Oxygen-removal oil-gas recycling device |
| CN104436982A (en) * | 2013-09-17 | 2015-03-25 | 中国石油化工股份有限公司 | Low concentration oxygen-containing organic waste gas recovery technology for dry spinning |
| CN106853315A (en) * | 2017-03-21 | 2017-06-16 | 上海兰宝环保科技有限公司 | Low-concentration organic exhaust gas recovery and processing system |
| CN107308781A (en) * | 2017-08-17 | 2017-11-03 | 上海赜羽环保技术有限公司 | VOCs treatment process technology in printing industry |
| CN107497245A (en) * | 2017-10-25 | 2017-12-22 | 山东赫尔环保科技有限公司 | A kind of low concentration VOC handling process for improving cycles of concentration, reducing energy consumption |
| CN207996539U (en) * | 2017-12-26 | 2018-10-23 | 嘉园环保有限公司 | A kind of large-wind-volume low-concentration organic exhaust gas processing unit |
-
2017
- 2017-12-26 CN CN201711428911.4A patent/CN108079740A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104436982A (en) * | 2013-09-17 | 2015-03-25 | 中国石油化工股份有限公司 | Low concentration oxygen-containing organic waste gas recovery technology for dry spinning |
| CN203556251U (en) * | 2013-09-25 | 2014-04-23 | 江苏中远环保科技有限公司 | Oxygen-removal oil-gas recycling device |
| CN103585854A (en) * | 2013-10-29 | 2014-02-19 | 嘉园环保股份有限公司 | Technology for recovering and processing organic exhaust gas by activated carbon adsorption and N2 desorption |
| CN106853315A (en) * | 2017-03-21 | 2017-06-16 | 上海兰宝环保科技有限公司 | Low-concentration organic exhaust gas recovery and processing system |
| CN107308781A (en) * | 2017-08-17 | 2017-11-03 | 上海赜羽环保技术有限公司 | VOCs treatment process technology in printing industry |
| CN107497245A (en) * | 2017-10-25 | 2017-12-22 | 山东赫尔环保科技有限公司 | A kind of low concentration VOC handling process for improving cycles of concentration, reducing energy consumption |
| CN207996539U (en) * | 2017-12-26 | 2018-10-23 | 嘉园环保有限公司 | A kind of large-wind-volume low-concentration organic exhaust gas processing unit |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109550352A (en) * | 2018-11-09 | 2019-04-02 | 杨皓 | A kind of tail gas of sodium cyanide manufacture ammonia synthesis gas sulfur removal technology |
| CN109589744A (en) * | 2018-12-25 | 2019-04-09 | 德州奥深节能环保技术有限公司 | A kind of active carbon adsorption desorption technique |
| CN109529537A (en) * | 2018-12-29 | 2019-03-29 | 江苏苏净集团有限公司 | A kind of integrated simulation device of rotary-type waste gas pollution control and treatment |
| CN109794142A (en) * | 2019-02-04 | 2019-05-24 | 青岛飞普思环保科技有限公司 | The recovery process of oily waste water treatment factory discharge exhaust gas |
| CN110075658A (en) * | 2019-04-19 | 2019-08-02 | 同济大学 | A kind of the VOCs processing system and its processing method of room temperature condensation auxiliary purification |
| CN110075658B (en) * | 2019-04-19 | 2023-12-22 | 同济大学 | VOCs treatment system for normal temperature condensation auxiliary purification and treatment method thereof |
| CN110465159A (en) * | 2019-07-25 | 2019-11-19 | 江苏苏净集团有限公司 | A kind of processing exhaust gas adsorption runner device |
| CN112337296A (en) * | 2019-08-07 | 2021-02-09 | 华懋科技股份有限公司 | Catalyst backflow high-efficiency organic waste gas treatment system and method thereof |
| CN110975522A (en) * | 2019-12-20 | 2020-04-10 | 杭州捷瑞空气处理设备有限公司 | Large-air-volume medium-concentration ethyl acetate recovery device and recovery method thereof |
| CN113304578A (en) * | 2020-02-26 | 2021-08-27 | 布罗芬德股份公司 | Apparatus and method for treating gaseous effluent |
| CN111318128A (en) * | 2020-03-03 | 2020-06-23 | 青岛华世洁环保科技有限公司 | Adsorption recovery system for nitrogen regeneration and adsorption recovery method thereof |
| CN113069885A (en) * | 2021-04-29 | 2021-07-06 | 孙绍堂 | Box-type moving bed waste gas purification system |
| CN113230883A (en) * | 2021-06-16 | 2021-08-10 | 中国科学院城市环境研究所 | Device and method for treating volatile organic compounds by coupling catalytic oxidation with molecular sieve rotating wheel |
| CN113719842A (en) * | 2021-08-27 | 2021-11-30 | 中船海洋动力部件有限公司 | VOCs processing system of high-efficient heat recovery |
| CN113719842B (en) * | 2021-08-27 | 2023-05-12 | 中船海洋动力部件有限公司 | VOCs processing system of high-efficient heat recovery |
| CN114225637A (en) * | 2021-11-18 | 2022-03-25 | 浙江菲达环保科技股份有限公司 | VOCs treatment system and method suitable for intermittent coating |
| CN115044398A (en) * | 2022-07-12 | 2022-09-13 | 上海克硫环保科技股份有限公司 | Coking flue gas tar removal system and method |
| CN115970665A (en) * | 2022-11-21 | 2023-04-18 | 广东工业大学 | Movable desorption system and method for double-channel carrier gas coupling adsorbent |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108079740A (en) | A kind of large-wind-volume low-concentration organic exhaust gas processing unit and method | |
| CN207694543U (en) | A kind of activated carbon adsorption hot nitrogen desorption condensate recycling device | |
| CN103463932B (en) | Method and device for treating and recycling organic exhaust gas with low concentration and large air volume | |
| CN101912714B (en) | Large-wind-volume low-concentration organic exhaust gas two-step recycling device and method | |
| CN105498446A (en) | Method for recycling organic matter through organic waste gas adsorption, steam desorption and fractional condensation | |
| CN104906919B (en) | Belt type adsorption and microwave desorption organic waste gas purification method and device | |
| CN109045925A (en) | A kind of VOCs waste gas recovery processing unit and method | |
| CN102489106B (en) | Method for cycle collection of exhaust gas by adopting secondary adsorption | |
| CN108144404A (en) | A kind of workshop tail gas purifying processing device and its technique | |
| CN106621697A (en) | Efficient solvent recycling device | |
| WO2022011937A1 (en) | Fluidized bed system capable of realizing zero emissions of waste gas | |
| CN211537130U (en) | Adsorption and desorption device and system with dry gas backflow module | |
| CN203540289U (en) | Treating and recovering device of organic waste gas with low concentration and large air volume | |
| CN207996539U (en) | A kind of large-wind-volume low-concentration organic exhaust gas processing unit | |
| CN109731433A (en) | The ethyl acetate recovery method combined is adsorbed with runner using activated carbon adsorption | |
| CN110917814A (en) | Printing industry and other trades energy saving and emission reduction exhaust treatment system who discharges VOCs waste gas | |
| CN108744889A (en) | It is a kind of to absorb the VOCs waste gas processing methods being combined with absorption | |
| CN110394020A (en) | A kind of nitrogen concentration desorption system for handling the waste active carbon containing VOCs | |
| CN106731484A (en) | A kind of industrial waste gas VOC recovery methods and its recovery system | |
| JP2011125768A (en) | Solvent recovery method and apparatus | |
| CN106422647B (en) | Low liquefaction temperature organic waste gas recovery device | |
| CN209317364U (en) | A kind of pretreatment of exhaust gas and concentration condensing recovery governing system | |
| CN110935285A (en) | Regenerative air partial proportioning circulation VOC concentration process | |
| CN207102240U (en) | VOCs waste gas recovery processing units | |
| CN206911061U (en) | Low-concentration organic exhaust gas recovery and processing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180529 |