CN108295786A - A kind of thermal desorption ageing device - Google Patents
A kind of thermal desorption ageing device Download PDFInfo
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- CN108295786A CN108295786A CN201810330338.1A CN201810330338A CN108295786A CN 108295786 A CN108295786 A CN 108295786A CN 201810330338 A CN201810330338 A CN 201810330338A CN 108295786 A CN108295786 A CN 108295786A
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- gas
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- holding tank
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/14—Production of inert gas mixtures; Use of inert gases in general
-
- 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
- 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
Abstract
The invention discloses a kind of thermal desorption ageing devices, and in particular to Laboratory Instruments, including aging desorption apparatus and purifier；The aging desorption apparatus includes heating mechanism, air inlet pipe and fixed ring；The heating mechanism includes annular-heating set, and the annular-heating set and the lateral wall of fixed ring fit；The fixed ring is equipped with the holding tank for accommodating adsorption tube, and the quantity of the holding tank is corresponding with the quantity of adsorption tube；The holding tank is internally provided with the first tube body adapter, the absorption tube end and the first tube body adapter sealing adaptor；The aging desorption apparatus further includes gas-distributing pipe, one end of the gas-distributing pipe is connected with air inlet pipe, it is connected inside the other end and holding tank, between holding tank slot bottom and the first tube body adapter, the quantity of the gas-distributing pipe is corresponding with the quantity of holding tank for the connecting pin of the gas-distributing pipe and holding tank.The present invention have the advantages that can simultaneously more adsorption tubes of burin-in process and recyclable inert gas.
Description
Technical field
The present invention relates to Laboratory Instruments, specially a kind of thermal desorption ageing device.
Background technology
Adsorption tube is commonly used for common article in thermal desorption analysis test experience, is internal filled with one or more solid
The stainless steel or glass tube of body adsorbent.When sampling, air or other gaseous samples pass through from adsorption tube, are taken in gaseous sample
The adsorbent absorption that the compound of band is loaded in adsorption tube, then by heating desorption, and blasts indifferent gas into adsorption tube
Body so that the classes of compounds in air is taken out of by inert gas, and then carries out Instrumental Analysis.
Wherein, adsorption tube is requirement Reusability, therefore is both needed to every time by burin-in process before use.The side of burin-in process
Method is：Under the high temperature conditions, by blasting inert gas into adsorption tube so that the compound adsorbed in adsorbent in pipe is by band
Go out.Adsorption tube be ensure that before carrying out air detection, the internal adsorbent filled is unadsorbed relevant compound, to
So that the data result that the later stage obtains is more accurate.
However, existing when carrying out burin-in process to adsorption tube using existing thermal desorption instrument, a batch can only be at aging
A small amount of adsorption tube is managed, the raising of conventional efficient is unfavorable for.Also, during traditional burin-in process, all kinds of chemical combination are carried
The inert gas of object is directly discharged in air, is unfavorable for recycling for resource.When the indifferent gas for carrying classes of compounds
Body direct emission can cause Laboratory air quality to decline, to influence the health of experimenter at laboratory.
Invention content
The present invention provides a kind of thermal desorption ageing device, the thermal desorption instrument have can simultaneously more adsorption tubes of burin-in process with
And the advantages of recyclable inert gas.
To achieve the above object, the present invention provides the following technical solutions:
A kind of thermal desorption ageing device, include for simultaneously to several adsorption tubes carry out aging aging desorption apparatus and
Purifier for purifying working gas；The air inlet that the aging desorption apparatus includes heating mechanism, is passed through for working gas
Pipe and the fixed ring for fixing adsorption tube；The heating mechanism includes annular-heating set, and the annular-heating is covered and fixed
The lateral wall of ring fits；The fixed ring is equipped with the holding tank for accommodating adsorption tube, the quantity of the holding tank and adsorption tube
Quantity is corresponding；The holding tank is internally provided with the first tube body adapter, and the absorption tube end and the first tube body adapter are close
Envelope switching；The aging desorption apparatus further includes gas-distributing pipe, and one end of the gas-distributing pipe is connected with air inlet pipe, the other end and appearance
It receives and is connected inside slot, the connecting pin of the gas-distributing pipe and holding tank is located between holding tank slot bottom and the first tube body adapter,
The quantity of the gas-distributing pipe is corresponding with the quantity of holding tank.
Preferably, the aging desorption apparatus further includes hollow gas buffer tank, the gas buffer tank and air inlet
Pipe is connected, and is connected to inside the gas-distributing pipe and gas buffer tank, and the connecting pin of gas-distributing pipe and gas buffer tank is located at air inlet
The top of the gas outlet of pipe.
Preferably, the heating mechanism further includes annular flame-retardant layer and annular insulating layer, the annular flame-retardant layer with
The lateral wall fitting of annular-heating set is fixed, and the annular insulating layer is bonded fixation with the lateral wall of annular flame-retardant layer.
Preferably, the annular-heating set madial wall is equipped with annular heat layer, the annular heat layer is equipped with for dividing gas
Pipe across through-hole.
Preferably, the aging desorption apparatus further includes gas collecting tube, for by gas collecting tube and adsorption tube sealing adaptor
Second tube body adapter and main gas collecting tube, the gas collecting tube are connected backwards to second tube body adapter one end with main gas collecting tube,
The quantity of the gas collecting tube and the second tube body adapter is corresponding with the quantity of adsorption tube.
As further preferred, the purifier include for remove the spraying mechanism of water-soluble aldehyde in working gas,
Silicone filler pipe for adsorbing benzene homologues in working gas and activated carbon filling pipe, the spraying mechanism, silicone filler pipe
And activated carbon filling pipe is connected with main gas collecting tube successively.
As still more preferably, the spraying mechanism includes tank body, and water inlet, the main collection are equipped with above the tank body
Tracheae is connected with tank body, and junction is located at close to tank base side.
It is further preferred that the tank interior is transversely provided with deflector, the deflector is equipped with deflector hole.
Preferably, the tank interior vertical direction is equipped with demarcation strip, the demarcation strip is mutually fixed with deflector, institute
It states demarcation strip and is equipped with venthole for gas to pass through.
Preferably, tank interior is separated into inlet chamber and outlet chamber by the demarcation strip, the deflector hole be distributed in into
Above air cavity on corresponding deflector.
Preferably, the tank body is equipped with horn-like diversion bucket, the diversion bucket is fixed at water inlet.
Preferably, the purifier further includes the drying kettle for drying working gas, the drying kettle is equipped with will
The net gas gas outlet of gas discharge after purified.
Beneficial effects of the present invention are：
(1), in the present invention, adsorption tube is placed on holding tank by experimenter, and the lower end of adsorption tube and holding tank
The first interior tube body adapter sealing adaptor.Since annular-heating is put on, multiple holding tanks and the first tube body turn mating can be set
Fitting so that the thermal desorption instrument can carry out burin-in process to multiple adsorption tubes simultaneously, and then substantially increases experimenter
Working efficiency.
(2), it during carrying out burin-in process to adsorption tube using thermal desorption instrument provided by the invention, continuously outflows
Working gas can be purified by purifier, to recovery operation gas and recycle.Therefore, it is provided using the present invention
Thermal desorption instrument to adsorption tube carry out burin-in process not only reduce experiment testing cost, also avoid the work for being entrained with pollutant
When making gas and continuously discharging, the air quality of laboratory or external environment is influenced.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of thermal desorption ageing device in embodiment 1；
Fig. 2 is a kind of cross-sectional view of thermal desorption ageing device in embodiment 1；
Fig. 3 is the portions the A enlarged drawing in Fig. 2；
Fig. 4 is the portions the B enlarged drawing in Fig. 2；
Fig. 5 is the cross-sectional view of aging desorption apparatus in embodiment 1；
Fig. 6 is the portions the C enlarged drawing in Fig. 5.
In figure：11, annular insulating layer, 12, annular flame-retardant layer, 120, annular heat layer, 13, annular-heating set, 14, air inlet
Pipe, 15, gas buffer tank, 16, gas-distributing pipe, 17, gas collecting tube, the 170, second tube body adapter, the 171, first tube body adapter,
18, main gas collecting tube, 19, fixed ring, 21, tank body, 22, water inlet, 23, water outlet, 24, diversion bucket, 25, demarcation strip, 26, water conservancy diversion
Plate, 260, deflector hole, 3, adsorption tube, 31, silicone filler pipe, 41, activated carbon filling pipe, 51, drying kettle, 52, net gas gas outlet.
Specific implementation mode
Embodiment 1
The present embodiment provides a kind of technical solutions：
In the present embodiment, working gas selects nitrogen, thermal desorption ageing device that the present embodiment is provided while being suitable for
Aging or purified treatment are carried out to the adsorption tube 3 of glass tube material or stainless steel.
As shown in figs. 1 to 6, a kind of thermal desorption ageing device includes for carrying out the old of aging to several adsorption tubes 3 simultaneously
Change desorption apparatus and the purifier for purifying working gas；The aging desorption apparatus includes heating mechanism, for work
The air inlet pipe 14 that gas is passed through and the fixed ring 19 for fixing adsorption tube 3；The heating mechanism includes annular-heating set 13,
The annular-heating set 13 and the lateral wall of fixed ring 19 fit；The fixed ring 19 is equipped with the holding tank for accommodating adsorption tube 3,
The quantity of the holding tank is corresponding with the quantity of adsorption tube 3；The holding tank is internally provided with the first tube body adapter 171, institute
State 3 end of adsorption tube and 171 sealing adaptor of the first tube body adapter；The aging desorption apparatus further includes gas-distributing pipe 16, described
One end of gas-distributing pipe 16 is connected with air inlet pipe 14, is connected inside the other end and holding tank, the gas-distributing pipe 16 and holding tank
Connecting pin be located between holding tank slot bottom and the first tube body adapter 171, the quantity of the gas-distributing pipe 16 and the number of holding tank
It measures corresponding.
In the present embodiment, adsorption tube 3 is placed on holding tank by experimenter, and the lower end of adsorption tube 3 and holding tank
Interior 171 sealing adaptor of the first tube body adapter.Due to that mating multiple holding tanks and first can be arranged on annular-heating set 13
Tube body adapter 171 so that the thermal desorption instrument can carry out burin-in process to multiple adsorption tubes 3 simultaneously, and then greatly improves
The working efficiency of experimenter.
Also, during the thermal desorption instrument provided using the present embodiment carries out burin-in process to adsorption tube 3, constantly
The nitrogen that outflow is entrained with pollutant can be purified by purifier, to recycle nitrogen and recycle.Therefore, using this
The thermal desorption instrument provided is provided, experiment testing cost is not only reduced to adsorption tube progress burin-in process, also avoids being entrained with dirt
When the nitrogen of dye object continuously discharges, the air quality of laboratory or external environment is influenced.
As shown in figure 3, the aging desorption apparatus further includes hollow gas buffer tank 15, the gas buffer tank 15 with
Air inlet pipe 14 is connected, and the gas-distributing pipe 16 is connected to 15 inside of gas buffer tank, and gas-distributing pipe 16 and gas buffer tank 15
Connecting pin is located at the top of the gas outlet of air inlet pipe 14.When nitrogen by air inlet pipe 14 into fashionable, flow velocity is larger, is unfavorable for adsorb
Pollutant in pipe 3 is taken out of.Therefore, the nitrogen entered by air inlet pipe 14 can flow to the lower section of gas buffer tank 15 first,
Gas-distributing pipe 16 is slowly entered then along the inner wall of gas buffer tank 15, to play the role of buffering, reduction of speed to nitrogen.
As shown in Fig. 2, the heating mechanism further includes that annular flame-retardant layer 12 and annular insulating layer 11, the annular are fire-retardant
Layer 12 is bonded fixation with the lateral wall of annular-heating set 13, and the annular insulating layer 11 is bonded with the lateral wall of annular flame-retardant layer 12
It is fixed.Since the heating temperature to adsorption tube is between 280~300, it is fixedly mounted in the lateral wall of annular-heating set 13
Annular flame-retardant layer 12 can prevent the generation of fire incident.The setting of annular insulating layer 11 can reduce distributing for heat, so that
The temperature of adsorption tube peripheral wall is more uniform.
As shown in figure 3, the annular-heating, which covers 13 madial walls, is equipped with annular heat layer 120, the annular heat layer 120 is set
There is the through-hole passed through for gas-distributing pipe 16.
As shown in fig. 6, the aging desorption apparatus further includes gas collecting tube 17, for sealing gas collecting tube 17 and adsorption tube 3
Switching the second tube body adapter 170 and main gas collecting tube 18, the gas collecting tube 17 backwards to 170 one end of the second tube body adapter with
Main gas collecting tube 18 is connected, and the quantity of the gas collecting tube 17 and the second tube body adapter 170 is opposite with the quantity of adsorption tube 3
It answers.
As shown in Figures 2 and 3, the purifier include for remove in working gas the spraying mechanism of water-soluble aldehyde,
Silicone filler pipe 31 and activated carbon for adsorbing benzene homologues in working gas fill pipe 41, and the spraying mechanism, silica gel are filled out
It fills pipe 31 and activated carbon filling pipe 41 is connected with main gas collecting tube 18 successively.Spraying mechanism can remove the aldehydes carried secretly in nitrogen
Compound, also, pass through silicone filler pipe 31 by the gas of spraying mechanism spray, further remove the benzene homologues of nitrogen entrainment
Or moisture.By silicone filler pipe 31, treated that gas eventually passes through that activated carbon filling pipe 41 is handled, and is pressed from both sides in absorption nitrogen
The esters of band or the aldehydes not eliminated, so that treated that nitrogen does not carry other kinds of chemical combination secretly by purifier
Object, recyclable be passed into air inlet pipe 14 uses, to substantially increase the utilization rate of resource.
As shown in Figure 2 and Figure 4, the spraying mechanism includes tank body 21, and 21 top of the tank body is equipped with water inlet 22, described
Main gas collecting tube 18 is connected with tank body 21, and junction is located at close to 21 bottom side of tank body.21 lower section of tank body also is provided with being discharged
Mouth 23.
As shown in figure 4,21 inner transverse of the tank body is equipped with deflector 26, the deflector 26 is equipped with deflector hole 260.
The water flowed into from water inlet 22 first passes through the buffering of deflector 26, and is slowly flowed out from deflector hole 260, can extend gas with
The area that the time of water contact and increase gas are contacted with water phase.
As shown in figure 4,21 inner vertical direction of the tank body is equipped with demarcation strip 25, the demarcation strip 25 and deflector 26
Mutually fixed, the demarcation strip 25 is equipped with venthole for gas to pass through.
As shown in figure 4, the demarcation strip 25 will be separated into inlet chamber and outlet chamber, the deflector hole 260 inside tank body 21
It is distributed in above inlet chamber on corresponding deflector 26.After water enters inlet chamber by deflector hole, the aldehydes in gas is absorbed
Object is closed, and gas can be by flowing out, to complete entirely to remove aldehyde process in venthole.
As shown in figure 4, the tank body 21 is equipped with horn-like diversion bucket 24, the diversion bucket 24 is fixed at water inlet
At 22.
As shown in Fig. 2, the purifier further includes the drying kettle 51 for drying working gas, the drying kettle 51 is set
Have will be purified after gas discharge net gas gas outlet 52.
Embodiment 2
Ginseng embodiment 1, the present embodiment are further elaborated on the basis of embodiment 1 in detail.It is made when to stainless steel
Adsorption tube carry out aging or when purified treatment, the thermal desorption ageing device that the present embodiment is provided further includes for the suction to high temperature
Attached pipe 3 carries out the cooling device of cooling processing.Cooling device is arranged in the lower section of fixed ring 19, and refrigerator can be used in cooling device
The principle of refrigeration, to be cooled down to adsorption tube.
Embodiment 3
Since adsorption tube 3 usually can accidentally be fallen in transit by violent concussion, or by experimenter
On ground, cause its internal adsorbent filled that can be broken release because of concussion.This batch of adsorption tube 3 of either producer's manufacture is deposited
When the problems such as adsorbent filling consolidation or adsorbent filling excessively relaxes, adsorption tube 3 can be influenced in practical adsorption process
In adsorption effect, the prohibited data detection obtained so as to cause experimenter is true.For this purpose, joining embodiment 1 in detail, in embodiment 1
On the basis of, the present embodiment is further improved the thermal desorption ageing device provided in embodiment 1.
Gas-distributing pipe 16 is equipped with No.1 flowmeter close to 171 side of the first tube body adapter, for detect by nitrogen
The flow velocity of gas is defined as beginning flow velocity.No. two flowmeters are installed backwards to 170 side of the second tube body adapter in gas collecting tube 17, are used
In detection nitrogen after filler, the speed of outflow is defined as later and decadent stage of a school of thought speed.
Based on above-mentioned, the present embodiment provides a kind of detection adsorption tube whether the discrimination method that can be worked normally.
Wherein, normal beginning flow velocity is 100ml/min, and when the filler in adsorption tube 3 is normal condition, later and decadent stage of a school of thought speed is 80
~95ml/min.It is further discussed below according to beginning flow velocity and later and decadent stage of a school of thought speed：
1, beginning flow velocity is 100ml/min (normal)
When later and decadent stage of a school of thought speed is 80~95ml/min, then：Adsorption tube can normal use
When later and decadent stage of a school of thought speed is 95~100ml/min, then：Filler in adsorption tube not consolidation, in venting process, filler may
Be carried over, cause the adsorption tube can collected pollutant sample size it is very few, experimental result can be influenced, it is therefore desirable in time
Replace adsorption tube；
When later and decadent stage of a school of thought speed is ＜ 80ml/min, then the excessively consolidation of the filler in adsorption tube, is using adsorption tube absorption pollution
When object sample, the contact area of the adsorbent and air sample filled in adsorption tube reduces, so as to cause measured air
The content of sample contamination is inaccurate, it is therefore desirable to replace adsorption tube in time.
2, beginning flow velocity ≠ 100ml/min (improper)
At this point, experimenter should adjust the intake velocity of nitrogen in time, so as not to intake velocity cross conference will be in adsorption tube
The adsorbent of filling is taken out of.Either intake velocity is too small, causes the burin-in process to adsorption tube ineffective.
Claims (10)
1. a kind of thermal desorption ageing device, which is characterized in that the aging including being used to simultaneously carry out several adsorption tubes (3) aging
Desorption apparatus and purifier for purifying working gas；
The aging desorption apparatus includes heating mechanism, is passed through for working gas air inlet pipe (14) and for fixing adsorption tube
(3) fixed ring (19)；
The heating mechanism includes annular-heating set (13), and the annular-heating set (13) and the lateral wall of fixed ring (19) are affixed
It closes；
The fixed ring (19) is equipped with the holding tank for accommodating adsorption tube (3), the quantity of the quantity and adsorption tube (3) of the holding tank
It is corresponding；
The holding tank is internally provided with the first tube body adapter (171), adsorption tube (3) end and the first tube body adapter
(171) sealing adaptor；
The aging desorption apparatus further includes gas-distributing pipe (16), and one end of the gas-distributing pipe (16) is connected with air inlet pipe (14),
It is connected inside the other end and holding tank, the connecting pin of the gas-distributing pipe (16) and holding tank is located at holding tank slot bottom and the first pipe
Between body adapter (171), the quantity of the gas-distributing pipe (16) is corresponding with the quantity of holding tank.
2. a kind of thermal desorption ageing device according to claim 1, which is characterized in that during the aging desorption apparatus further includes
Empty gas buffer tank (15), the gas buffer tank (15) are connected with air inlet pipe (14), the gas-distributing pipe (16) and gas
Connection inside surge tank (15), and the connecting pin of gas-distributing pipe (16) and gas buffer tank (15) is located at the gas outlet of air inlet pipe (14)
Top.
3. a kind of thermal desorption ageing device according to claim 1, which is characterized in that the heating mechanism further includes annular resistance
Layer (12) and annular insulating layer (11) are fired, the annular flame-retardant layer (12) is bonded solid with the lateral wall of annular-heating set (13)
Fixed, the annular insulating layer (11) is bonded fixation with the lateral wall of annular flame-retardant layer (12).
4. a kind of thermal desorption ageing device according to claim 1, which is characterized in that annular-heating set (13) madial wall
Equipped with annular heat layer (120), the annular heat layer (120) is equipped with the through-hole passed through for gas-distributing pipe (16).
5. a kind of thermal desorption ageing device according to claim 1, which is characterized in that the aging desorption apparatus further includes collection
Tracheae (17) is used for the second tube body adapter (170) and main gas collecting tube of gas collecting tube (17) and adsorption tube (3) sealing adaptor
(18), the gas collecting tube (17) is connected backwards to second tube body adapter (170) one end with main gas collecting tube (18), the gas collecting tube
(17) and the quantity of the second tube body adapter (170) is corresponding with the quantity of adsorption tube (3).
6. a kind of thermal desorption ageing device according to claim 5, which is characterized in that the purifier includes for removing
Spraying mechanism, the silicone filler pipe (31) and activity for adsorbing benzene homologues in working gas of water-soluble aldehyde in working gas
Charcoal filling pipe (41), the spraying mechanism, silicone filler pipe (31) and activated carbon filling pipe (41) successively with main gas collecting tube
(18) it is connected.
7. a kind of thermal desorption ageing device according to claim 6, which is characterized in that the spraying mechanism includes tank body
(21), it is equipped with water inlet (22) above the tank body (21), the main gas collecting tube (18) is connected with tank body (21), and junction
Positioned at close to tank body (21) bottom side.
8. a kind of thermal desorption ageing device according to claim 7, which is characterized in that tank body (21) inner transverse is equipped with
Deflector (26), the deflector (26) are equipped with deflector hole (260).
9. a kind of thermal desorption ageing device according to claim 8, which is characterized in that tank body (21) the inner vertical direction
It is equipped with demarcation strip (25), the demarcation strip (25) is mutually fixed with deflector (26), and the demarcation strip (25) is logical equipped with supplied gas
The venthole crossed.
10. a kind of thermal desorption ageing device according to claim 8, which is characterized in that the demarcation strip (25) is by tank body
(21) internal to be separated into inlet chamber and outlet chamber, the deflector hole (260) is distributed in corresponding deflector (26) above inlet chamber
On.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810330338.1A CN108295786A (en) | 2018-04-13 | 2018-04-13 | A kind of thermal desorption ageing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810330338.1A CN108295786A (en) | 2018-04-13 | 2018-04-13 | A kind of thermal desorption ageing device |
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| Publication Number | Publication Date |
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| CN108295786A true CN108295786A (en) | 2018-07-20 |
Family
ID=62847279
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810330338.1A Pending CN108295786A (en) | 2018-04-13 | 2018-04-13 | A kind of thermal desorption ageing device |
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-
2018
- 2018-04-13 CN CN201810330338.1A patent/CN108295786A/en active Pending
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| EP0875666A2 (en) * | 1997-04-30 | 1998-11-04 | Toyota Jidosha Kabushiki Kaisha | Exhaust gas purifying apparatus for an internal combustion engine |
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| CN106076034A (en) * | 2016-08-17 | 2016-11-09 | 宁波大发化纤有限公司 | A kind of device and method processing foam material waste gas |
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