CN109173568A - A kind of differential safe method for concentration of absorption of active carbon - Google Patents
A kind of differential safe method for concentration of absorption of active carbon Download PDFInfo
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- 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
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Abstract
The invention discloses a kind of differential safe method for concentration of absorption of active carbon, adsorbent equipment is adsorbed using active carbon, including main absorber and auxiliary absorber；Safety when improving main absorber desorption is desorbed by nitrogen class inert gas shielding, the residual activity so as to promote regenerating active carbon effect by the nitrogen temperature for improving main body absorber, after reducing material desorption；The nitrogen containing high-enriched organics that discharge is desorbed continues on for main absorber elevated temperature desorption by forming the inert purge gas of low concentration after auxiliary absorber adsorption cleaning after appropriate cooling, to complete the depth desorption work of main absorber.The present invention utilizes the characteristic of adsorption equilibrium, it is designed to main absorber and auxiliary absorber combined system, by the undertaking effect of differential Adsorption Concentration and auxiliary absorber, main absorber can be sufficiently regenerated under the premise of ensuring safety, so that it is guaranteed that the adsorption cleaning efficiency of main absorber.
Description
Technical field
The invention belongs to environmental technology fields, are related to gas purification technique, and in particular to a kind of differential absorption of active carbon
Safe method for concentration.
Background technique
Adsorption Concentration is the important means of volatile organic gases purification, and Adsorption Concentration heated oxide technique has become at present
The main technological route of low concentration, Wind Volume organic gas purification.Since Adsorption Concentration heated oxide technique generallys use hot sky
Gas is desorbed, when adsorbent is flammable active charcoal class material, if desorption hot-air is more than 100 DEG C, it is easy to
There is the safety problem caught fire.Existing report shows the concentration heated oxide work using cellular activated carbon as adsorbent material
Skill, when the air using temperature higher than 100 DEG C carries out desorption and regeneration, the appearance layer of charcoal fire safety problem of large scale, and such as
Air pair of the fruit with temperature lower than 100 DEG C is desorbed with the active carbon that low concentration organic matter reaches adsorption equilibrium in gas
When, then active carbon can not be desorbed being purged using the gas with adsorption treatment gas integrated flow equivalent completely,
Cause the residual adsorbance of organic matter in active carbon relatively high, the active carbon after leading to regeneration is to low concentration organic gas
Adsorption capacity is not strong, is difficult to meet the requirement of current purification gas limited value of discharge standard.Here by absorber adsorption treatment mistake
Accumulation gas standard state flow QaThe accumulation purge gas standard state flow Q needed with desorptiondRatio be defined as cocnentration factor, be concentrated
Than bigger, the performance of Adsorption Concentration is better, works as QdMore than or equal to QaWhen, that is, cocnentration factor be less than or equal to 1 when, system just loses concentration
Function.
From a security standpoint, current method is that the adsorbent of enriching stage is changed to hydrophobicity zeolite molecular sieve
Runner, since zeolite molecular sieve itself does not have combustibility, even if smouldering, harmfulness is less than the burning of charcoal bed, therefore should
Facility preferably solves the thickening problem of low concentration, Wind Volume gas, but the investment of equipment is larger, and processing and manufacturing process is long,
Technical requirements are high, and worldwide supplier's quantity is extremely limited, and delivery cycle is long, and the concentration of zeolite runner is primarily adapted for use in
Continuous operation operating condition needs high temperature air (160 DEG C or more, usually 180 DEG C to 220 DEG C) to carry out purging desorption, to desorption heat
The requirement in source is high, generally requires to generate high-temperature gas by burning, and is restricted in the application of some area of fire protection, while by
It is relatively small in the population size of zeolite molecular sieve, therefore to discontinuous, the especially big organic gas of fluctuation of concentration range is net
It is bad to change adaptability.
Summary of the invention
For the above-mentioned problems in the prior art, the present invention provides a kind of using all kinds of active carbons from a wealth of sources
The safe method for concentration of differential absorption be designed to main absorber and auxiliary absorber combined system using the characteristic of adsorption equilibrium,
By the undertaking effect of differential Adsorption Concentration and auxiliary absorber, main absorption can be sufficiently regenerated under the premise of ensuring safety
Device, so that it is guaranteed that the main absorber after regeneration is to the adsorption cleaning efficiency of low concentration pollution gas.
For this purpose, the invention adopts the following technical scheme:
A kind of differential safe method for concentration of absorption of active carbon, the adsorbent equipment of use are adsorbed using active carbon, including
Main absorber and auxiliary absorber；It is de- to improve main absorber that desorption is protected by nitrogen class inert gas (having descended abbreviation nitrogen)
Safety when attached, while the temperature of the nitrogen by improving main body absorber promotes regenerating active carbon effect, reduces adsorption material
Residual capacity after material desorption；After the high concentration organic gas being desorbed out passes through auxiliary absorber adsorption cleaning after appropriate cooling
The purge gass for forming low concentration continue on for main absorber desorption, to complete the desorption work of main absorber；Adsorb high concentration
The auxiliary absorber of gas can be purged by the air of lower temperature and be regenerated, capacity of resuming work.
Preferably, the two sides of the main absorber be equipped with several valves, first gas heater, first gas cooler and
First blower；The two sides of the auxiliary absorber are equipped with several valves, second gas heater, second gas cooler and second
Blower；First blower is located at the pipe of first gas heater and first gas cooler and gas-gas heat exchanger exit
Between road interface；Second blower is located at the upstream gas pipeline side of second gas heater；The gas-gas changes
The channel both ends of hot device, one end threeway are connected between main absorber and first gas cooler and take over, other end connection
Second cooler；The both ends in another channel of the gas-gas heat exchanger, one end connect auxiliary absorber, other end threeway
Connect the adapter tube between the first blower and first gas cooler；Valve on the left of main absorber includes the first valve, the second valve
Door, the 9th valve and the tenth valve, the valve on right side include third valve, the 4th valve and the 11st valve；Assist absorber
The valve of side includes the 5th valve and the 8th valve, and the valve of the other side includes the 6th valve, the 7th valve and the 11st valve
Door；Tenth valve is used to control the input of nitrogen, and the 11st valve is located between main absorber and auxiliary absorber；Second valve
Between gas-gas heat exchanger and main absorber, third valve is between first gas heater and main absorber, and
Nine valves are between first gas cooler and gas-gas heat exchanger；5th valve is located at second gas cooler and auxiliary
It helps between absorber, the 6th valve is located between gas-gas heat exchanger and auxiliary absorber；7th valve is located at second gas
Between heater and auxiliary absorber.
Preferably, when normal sorption is run, the first valve and the 4th valve are opened, the second valve, third valve, the tenth valve
Door and the 11st valve are closed, and main absorber gas absorption purification is carried out.
Further, the nitrogen replacement process before main absorber desorption includes: to close the first valve, the second valve, third
Valve, the 4th valve, the 5th valve, the 6th valve, the 7th valve successively open the 8th valve, the 11st valve and the tenth valve
Door carries out nitrogen displacement.
Preferably, after the nitrogen purging displacement for completing main absorber, by closing the first valve, the 4th valve, the 7th valve
Door, the 8th valve, the 9th valve open the second valve, third valve, the 5th valve, the 6th valve, and it includes second that combination, which is formed,
Nitrogen circulation circuit including gas cooler, gas-gas heat exchanger, the first blower, first gas heater, each equipment
Sequence of movement is as follows: leave the purge gas of main absorber by the second valve gas coming through-gas heat exchanger hot fluid into
Mouth is tentatively cooled down to hot fluid outlet ports, and auxiliary absorber is entered after then further cooling down by the second cooler and is adsorbed
The import of purification, the cold side wind for purging air through gas-gas heat exchanger after being purified is heated to outlet, by the first wind
Hot gas purging desorption is carried out back to main absorber after being heated to desorption temperature by first gas heater after machine pressurization, such as
Pollutant after this circulation regular hour in main absorber is transferred in auxiliary absorber.
Preferably, the cooling of main absorber be accomplished in that close the first valve, the 4th valve, the 5th valve,
6th valve, the tenth valve, the 11st valve, close the heating function of primary heater, open the second valve, third valve and
9th valve opens first gas cooler, the first blower, carries out circulating cooling.
Preferably, the 5th valve, the 6th valve, the 11st valve are closed, the 8th valve, the 7th valve are opened, by the
The hot-air that two blowers and second gas heater generate carries out temperature programmed desorption to auxiliary absorber at 100 DEG C or less, produces
Raw small air quantity high concentrations of gas carries out the processing such as subsequent high-temperature thermal oxidation or recycling.
Preferably, the high concentrations of gas formed in main absorber desorption process, auxiliary absorption are received using auxiliary absorber
The loadings of adsorbent are 10% to 200% of adsorbent inventory in main absorber in device.
Preferably, main body desorption is recycled the lower main absorber of equilibrium adsorption capacities sufficiently again using high temperature nitrogen protection
It is raw, form the desorption gas of high concentration；It is big under high equilibrium concentration using assisting absorber to carry out after being cooled to 80 DEG C or less
Capacity sorbent, the desorption temperature of main absorber are 100 DEG C to 200 DEG C；Recyclegas air quantity is that main absorber designs absorption working condition
10% to the 200% of air quantity.
The auxiliary absorber that pollutant has been adsorbed preferably for the large capacity under high equilibrium concentration, using lower than 100 DEG C
Hot-air carries out auxiliary absorber adsorption capacity and restores；The direction of the thermal desorption air-flow of absorber is assisted to adsorb high concentration gas with it
It is contrary when body.
Compared with prior art, the beneficial effects of the present invention are:
(1) compared with hot-air desorption apparatus is concentrated in current activated carbon adsorption, the present invention can ensure safe feelings
The efficient absorption of main adsorbent equipment is realized under condition, so that it is guaranteed that regeneration after main absorber adsorption cleaning efficiency, purify exhaust rich
Degree meets stringent limited value of discharge standard requirement.
(2) compared with zeolite runner enrichment facility, the present invention can reduce cost of investment, do not need complicated Zeolite modifying,
Load and moulding process shorten production delivery cycle, while bigger more suitable for interval, fluctuation of concentration range than zeolite runner system
The purification concentration of the organic gas discharge of occasion.
Detailed description of the invention
Fig. 1 is a kind of structure composition schematic diagram of the differential adsorbent equipment of active carbon of the present invention.
Description of symbols: 1, the first valve；2, the second valve；3, third valve；4, the 4th valve；5, main absorber；
6, absorber is assisted；7, gas-gas heat exchanger；8, second gas cooler；9, first gas heater；10, second gas
Heater；11, first gas cooler；12, the first blower；13, the 5th valve；14, the 6th valve；15, the 7th valve；16,
8th valve；17, the 9th valve；18, the tenth valve；19, the 11st valve；20, the second blower.
Specific embodiment
With reference to the accompanying drawing and specific embodiment come the present invention will be described in detail, specific embodiment therein and explanation only
For explaining the present invention, but it is not as a limitation of the invention.
The invention discloses a kind of safe method for concentration of the differential absorption of active carbon, the adsorbent equipment of use using active carbon into
Row absorption, including main absorber 5 and auxiliary absorber 6；It is desorbed by nitrogen class inert gas shielding de- to improve main absorber 5
Safety when attached, while the temperature of the nitrogen class inert gas by improving main body absorber 5 promotes regenerating active carbon effect,
Residual capacity after reducing adsorbent material desorption；The high concentration organic gas being desorbed out passes through auxiliary absorber after appropriate cooling
The purging nitrogen that low concentration is formed after 6 adsorption cleanings continues on for main absorber 5 and is desorbed, to complete the desorption work of main absorber
Make；The auxiliary absorber of high concentrations of gas is adsorbed, can be purged and be regenerated by the air of lower temperature, capacity of resuming work.
Specifically, as shown in Figure 1, the two sides of the main absorber 5 are equipped with several valves, first gas heater 9, first
Gas cooler 11 and the first blower 12；It is described auxiliary absorber 6 two sides be equipped with several valves, second gas heater 10,
Second gas cooler 8 and the second blower 20；First blower 12 is located at first gas heater 9 and first gas cooler
Between 11 and the pipeline interface of the outlet of gas-gas heat exchanger 7；Second blower 20 is located at second gas heater 10
Upstream gas pipeline side；The channel both ends of the gas-gas heat exchanger 7, one end threeway be connected to main absorber 5 with
It is taken between first gas cooler, the other end connects the second cooler 8；Another channel of the gas-gas heat exchanger 7
Both ends, one end connects auxiliary absorber 6, and other end threeway connects connecing between the first blower 12 and first gas cooler 11
Pipe；The valve in main 5 left side of absorber includes the first valve 1, the second valve 2, the 9th valve 17 and the tenth valve 18, the valve on right side
Door includes third valve 3, the 4th valve 4 and the 11st valve 19；The valve for assisting 6 side of absorber includes 13 He of the 5th valve
8th valve 16, the valve of the other side include the 6th valve 14, the 7th valve 15 and the 11st valve 19；Tenth valve 18 is used for
The input of nitrogen is controlled, the 11st valve 19 is located between main absorber 5 and auxiliary absorber 6；Second valve 2 is located at gas-
Between gas heat exchanger 7 and main absorber 5, third valve 3 is between first gas heater 9 and main absorber 5, the 9th valve
Door 17 is between first gas cooler 11 and gas-gas heat exchanger 7；5th valve 13 is located at second gas cooler 8
Between auxiliary absorber 6, the 6th valve 14 is located between gas-gas heat exchanger 7 and auxiliary absorber 6；7th valve 15
Between second gas heater 10 and auxiliary absorber 6.
Specifically, when normal sorption is run, the first valve 1 and the 4th valve 4 are opened, the second valve 2, third valve 3, the
Ten valves 18 and the 11st valve 19 are closed, and main 5 gas absorption of absorber purification is carried out.
Specifically, the nitrogen replacement process before main absorber desorption includes: to close the first valve 1, the second valve 2, third
Valve 3, the 4th valve 4, the 5th valve 13, the 6th valve 14, the 7th valve 15 successively open the 8th valve 16, the 11st valve
Door 19 and the tenth valve 18 carry out nitrogen displacement.
Specifically, the main absorber after completing nitrogen displacement is by closing the first valve 1, the 4th valve 4, the 7th valve
15, the 8th valve 16, the 9th valve 17 open the second valve 2, third valve 3, the 5th valve 13, the 6th valve 14, combine shape
At the nitrogen circulation time for including second gas cooler 8, gas-gas heat exchanger 7, the first blower 12, first gas heater 9
The sequence of movement on road, each equipment is as follows: the purge gas for leaving main absorber 5 passes through the second 2 gas coming throughs of valve-gas converting heat
The hot fluid inlet of device 7 is tentatively cooled down to hot fluid outlet ports, then by entering auxiliary after the second cooler 8 further cooling
Absorber 6 carries out adsorption cleaning, and the import of the cold side wind for purging air through gas-gas heat exchanger 7 after being purified is to out
Mouth is heated, by returning to main absorber 5 after being heated to desorption temperature by first gas heater 9 after the pressurization of the first blower 12
Hot gas purging desorption is carried out, so pollutant after the circulation regular hour in main absorber 5 is transferred to auxiliary absorber 6
In.
Specifically, the cooling of main absorber 5, which is accomplished in that, closes the first valve 1, the 4th valve 4, the 5th valve
Door the 13, the 6th valve 14, the tenth valve 18, the 11st valve 19, close the heating function of primary heater 9, open the second valve
Door 2, third valve 3 and the 9th valve 17 open first gas cooler 11, the first blower 12, carry out circulating cooling.
Specifically, the 5th valve 13, the 6th valve 14, the 11st valve 19 are closed, the 8th valve 16, the 7th valve are opened
15, the hot-air generated by the second blower 20 and second gas heater 10 carries out journey to auxiliary absorber 6 at 100 DEG C or less
Sequence desorption by heating, the small air quantity high concentrations of gas of generation carry out the processing such as subsequent high-temperature thermal oxidation.
Specifically, the high concentrations of gas formed in main 5 desorption process of absorber is received using auxiliary absorber 6, auxiliary is inhaled
The loadings of adsorbent are 10% to 200% of adsorbent inventory in main absorber 5 in adnexa 6.
Specifically, main body desorption is abundant by the lower main absorber 5 of equilibrium adsorption capacities using high temperature nitrogen protection circulation
Regeneration, forms the desorption gas of high concentration；It is carried out under high equilibrium concentration after being cooled to 80 DEG C or less using auxiliary absorber 6
Large capacity absorption, the desorption temperature of main absorber 5 are 100 DEG C to 200 DEG C；Recyclegas air quantity is main absorber design absorption work
10% to the 200% of condition air quantity.
Specifically, the auxiliary absorber 6 that pollutant has been adsorbed for the large capacity under high equilibrium concentration, using lower than 100
DEG C hot-air carry out auxiliary absorber adsorption capacity restore；The direction of the thermal desorption air-flow of absorber 6 is assisted to adsorb height with it
It is contrary when concentration gases.
Differential Adsorption Concentration described here utilizes the characteristic of adsorption equilibrium, be designed to main absorber and auxiliary absorber
Combined system, using the main absorber of nitrogen class inert gas shielding elevated temperature desorption, the gas of the high concentration parsed is suitably cooling
Afterwards by assisting absorber to adsorb once again, 100 DEG C finally are carried out using air to the auxiliary absorber for having adsorbed high concentrations of gas
The temperature programmed desorption of following temperature parses.Since adsorption capacity is low when adsorbent has low concentration, high temperature, and in low temperature, height
Adsorption capacity big characteristic when concentration, by above differential Adsorption Concentration, by assisting the undertaking effect of absorber, Ke Yi
Ensure sufficiently to regenerate main absorber under the premise of safety, so that it is guaranteed that the adsorption cleaning efficiency of the main absorber after regeneration.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to restrict the invention, all in essence of the invention
Made any modification, equivalent replacement and improvement etc., should be included in protection scope of the present invention within mind and spirit
Within.
Claims (10)
1. a kind of differential safe method for concentration of absorption of active carbon, the adsorbent equipment of use is adsorbed using active carbon, including master
Absorber (5) and auxiliary absorber (6), it is characterised in that: be desorbed by nitrogen class inert gas shielding to improve main absorber
(5) safety when being desorbed, while the temperature of the nitrogen class inert gas by improving main body absorber (5) promotes active carbon again
It comes into force fruit, the residual capacity after reducing adsorbent material desorption；The high concentration organic gas being desorbed out is after appropriate cooling by auxiliary
The purge gass for forming low concentration are helped after absorber (6) adsorption cleaning to continue on for main absorber (5) desorption, to complete main absorption
The desorption work of device；The auxiliary absorber for adsorbing high concentrations of gas is purged under lower regeneration temperature by air, is regenerated extensive
Multiple displacement volume.
2. the differential safe method for concentration of absorption of a kind of active carbon according to claim 1, it is characterised in that: the main absorption
The two sides of device (5) are equipped with several valves, first gas heater (9), first gas cooler (11) and the first blower (12)；Institute
The two sides for stating auxiliary absorber (6) are equipped with several valves, second gas heater (10), second gas cooler (8) and second
Blower (20)；First blower (12) is located at first gas heater (9) and first gas cooler (11) and gas-gas
Between the pipeline interface of heat exchanger (7) outlet；Second blower (20) is located at the upstream gas of second gas heater (10)
Body pipeline side；The channel both ends of the gas-gas heat exchanger (7), one end threeway are connected to main absorber (5) and the
It is taken between one gas cooler, the other end connects the second cooler (8)；Another of the gas-gas heat exchanger (7) is logical
The both ends in road, one end connect auxiliary absorber (6), other end threeway connect the first blower (12) and first gas cooler (11) it
Between adapter tube；Valve on the left of main absorber (5) includes the first valve (1), the second valve (2), the 9th valve (17) and the tenth
Valve (18), the valve on right side include third valve (3), the 4th valve (4) and the 11st valve (19)；It assists absorber (6)
The valve of side includes the 5th valve (13) and the 8th valve (16), and the valve of the other side includes the 6th valve (14), the 7th valve
Door (15) and the 11st valve (19)；Tenth valve (18) is used to control the input of nitrogen, and the 11st valve (19) is located at main suction
Between adnexa (5) and auxiliary absorber (6)；Second valve (2) be located at gas-gas heat exchanger (7) and main absorber (5) it
Between, third valve (3) is located between first gas heater (9) and main absorber (5), and the 9th valve (17) is located at first gas
Between cooler (11) and gas-gas heat exchanger (7)；5th valve (13) is located at second gas cooler (8) and auxiliary is inhaled
Between adnexa (6), the 6th valve (14) is located between gas-gas heat exchanger (7) and auxiliary absorber (6)；7th valve
(15) it is located between second gas heater (10) and auxiliary absorber (6).
3. the differential safe method for concentration of absorption of a kind of active carbon according to claim 1, it is characterised in that: normal sorption fortune
When row, the first valve (1) and the 4th valve (4) are opened, the second valve (2), third valve (3), the tenth valve (18) and the tenth
One valve (19) is closed, and the purification of main absorber (5) gas absorption is carried out.
4. the differential safe method for concentration of absorption of a kind of active carbon according to claim 1, it is characterised in that: main absorber is de-
Nitrogen replacement process before attached includes: to close the first valve (1), the second valve (2), third valve (3), the 4th valve (4), the
Five valves (13), the 6th valve (14), the 7th valve (15) successively open the 8th valve (16), the 11st valve (19) and the
Ten valves (18) carry out nitrogen displacement.
5. the differential safe method for concentration of absorption of a kind of active carbon according to claim 1, it is characterised in that: complete main absorption
Device nitrogen purging displacement after, by close the first valve (1), the 4th valve (4), the 7th valve (15), the 8th valve (16),
9th valve (17), opens the second valve (2), third valve (3), the 5th valve (13), the 6th valve (14), and combination forms packet
Include the nitrogen including second gas cooler (8), gas-gas heat exchanger (7), the first blower (12), first gas heater (9)
The sequence of movement of gas circulation loop, each equipment is as follows: the purging desorption gas for leaving main absorber (5) passes through the second valve (2)
The hot fluid inlet of gas coming through-gas heat exchanger (7) is tentatively cooled down to hot fluid outlet ports, then passes through the second cooler
(8) further enter auxiliary absorber (6) after cooling and carry out adsorption cleaning, purge air through gas-gas after being purified
The import of the cold side wind of heat exchanger (7) is heated to outlet, by passing through after the first blower (12) pressurization by first gas heater (9)
It is heated to carry out hot gas purging desorption back to main absorber (5) after desorption temperature, so recycles main suction after the regular hour
Pollutant in adnexa (5) is transferred in auxiliary absorber (6).
6. the differential safe method for concentration of absorption of a kind of active carbon according to claim 1, it is characterised in that: main absorber
(5) cooling, which is accomplished in that, closes the first valve (1), the 4th valve (4), the 5th valve (13), the 6th valve
(14), the tenth valve (18), the 11st valve (19), the heating function of closing primary heater (9), unlatching the second valve (2),
Third valve (3) and the 9th valve (17) open first gas cooler (11), the first blower (12), carry out circulating cooling.
7. the differential safe method for concentration of absorption of a kind of active carbon according to claim 1, it is characterised in that: close the 5th valve
Door (13), the 6th valve (14), the 11st valve (19), open the 8th valve (16), the 7th valve (15), pass through the second blower
(20) temperature programming is carried out to auxiliary absorber (6) at 100 DEG C or less and is taken off with the hot-air of second gas heater (10) generation
Attached, the small air quantity high concentrations of gas of generation carries out the processing systems such as subsequent high-temperature thermal oxidation or recycling.
8. the differential safe method for concentration of absorption of a kind of active carbon according to any one of claim 1 to 7, feature exist
In: the high concentrations of gas formed in main absorber (5) desorption process is received using auxiliary absorber (6), is assisted in absorber (6)
The loadings of adsorbent are 10% to 200% of adsorbent inventory in main absorber (5).
9. the differential safe method for concentration of absorption of a kind of active carbon according to claim 8, it is characterised in that: main body desorption is adopted
The lower main absorber (5) of equilibrium adsorption capacities is sufficiently regenerated with high temperature nitrogen protection circulation, forms the desorption gas of high concentration
Body；It carries out the large capacity under high equilibrium concentration using auxiliary absorber (6) after being cooled to 80 DEG C or less to adsorb, main absorber
(5) desorption temperature is 100 DEG C to 200 DEG C；Recyclegas air quantity arrives for main absorber designs absorption working condition air quantity 10%
200%.
10. the differential safe method for concentration of absorption of a kind of active carbon according to claim 9, it is characterised in that: for Gao Ping
Large capacity under weighing apparatus concentration has adsorbed the auxiliary absorber (6) of pollutant, carries out auxiliary absorber using lower than 100 DEG C of hot-airs
Adsorption capacity restore；It is contrary when the direction of the thermal desorption air-flow of absorber (6) being assisted to adsorb high concentrations of gas with it.
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| CN109985485A (en) * | 2019-04-29 | 2019-07-09 | 南京兆博环保科技有限公司 | A kind of device and method of high concentrations of gas absorbing, recovering and purifying |
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