CN217855371U - Prevent endless circulation adsorption equipment and VOCs treatment facility - Google Patents
Prevent endless circulation adsorption equipment and VOCs treatment facility Download PDFInfo
- Publication number
- CN217855371U CN217855371U CN202221572834.6U CN202221572834U CN217855371U CN 217855371 U CN217855371 U CN 217855371U CN 202221572834 U CN202221572834 U CN 202221572834U CN 217855371 U CN217855371 U CN 217855371U
- Authority
- CN
- China
- Prior art keywords
- valve
- adsorption
- pipeline
- adsorption tank
- tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 151
- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 20
- 230000008929 regeneration Effects 0.000 claims abstract description 19
- 238000011069 regeneration method Methods 0.000 claims abstract description 19
- 239000007789 gas Substances 0.000 claims description 29
- 239000003344 environmental pollutant Substances 0.000 claims description 17
- 231100000719 pollutant Toxicity 0.000 claims description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 16
- 238000009833 condensation Methods 0.000 claims description 13
- 230000005494 condensation Effects 0.000 claims description 13
- 229910052799 carbon Inorganic materials 0.000 claims description 12
- 239000002912 waste gas Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 5
- 125000004122 cyclic group Chemical group 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 238000005067 remediation Methods 0.000 claims 3
- 230000003373 anti-fouling effect Effects 0.000 claims 1
- 239000003463 adsorbent Substances 0.000 description 7
- 238000003795 desorption Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Separation Of Gases By Adsorption (AREA)
Abstract
The utility model discloses an anti-dead-cycle adsorption device and VOCs treatment equipment, which comprises an adsorption air inlet pipeline, a regeneration pipeline, a release pipeline, a first valve, a second valve, a third valve, a fourth valve, a fifth valve, a sixth valve, a vacuum pump, a first adsorption tank and a second adsorption tank; a group of branch pipes at one end of the adsorption air inlet pipeline are respectively communicated with air inlets of the first adsorption tank and the second adsorption tank; a group of branch pipes at one end of the regeneration pipeline are respectively communicated with the air inlets of the first adsorption tank and the second adsorption tank; a group of branch pipes at one end of the release pipeline are respectively communicated with the air outlets of the first adsorption tank and the second adsorption tank; the third valve and the fourth valve are respectively arranged on a group of branch pipes of the release pipeline; the first valve and the second valve are respectively arranged on a group of branch pipes of the adsorption air inlet pipeline; the fifth valve and the sixth valve are respectively arranged on a group of branch pipes of the regeneration pipeline; through the alternative work of first adsorption tank and second adsorption tank, and can avoid the vacuum pump to be absorbed in the endless loop of operation.
Description
Technical Field
The utility model relates to a prevent dead cycle adsorption equipment and VOCs treatment facility belongs to vapor recovery system technical field.
Background
At present VOCs treatment facility generally includes system's fan, condensing system, the rear end adsorption system that switches on through the intercommunication pipeline, and system's fan delivers to condensing system with the gas of abandonment entry, and opening of system's fan is stopped by setting up the pressure transmitter control in system's fan entrance, and rear end adsorption system's vacuum pump export connects before the entry of system's fan.
When no gas enters the VOCs treatment equipment from a waste inlet, the rear-end adsorption system still needs to finish the desorption process, the vacuum pump needs to vacuumize the rear-end adsorption system, the rear-end adsorption system generally adsorbs pollutants through an adsorbent (such as activated carbon), gas containing high-concentration pollutants on the adsorbent can be extracted through the vacuum action, the extracted gas containing the high-concentration pollutants is discharged to a system fan for secondary condensation, so that the air pressure of a pipeline in a system fan and a pressure transmitter area is driven to rise, the system fan is started again after the pressure transmitter senses the change of the air pressure, the system fan sends the gas containing the high-concentration pollutants into a condensation system for secondary circulation, the gas containing the high-concentration pollutants enters the rear-end adsorption system after condensation is finished, and the rear-end adsorption system continues to operate the vacuum pump when detecting the gas, so that the vacuum pump falls into dead circulation of continuous operation and cannot stop.
SUMMERY OF THE UTILITY MODEL
For solving the not enough of prior art, the utility model aims to provide a prevent endless circulation adsorption equipment and VOCs treatment facility, the vacuum pump of having solved among the prior art rear end adsorption system is absorbed in endless circulation operation easily.
In order to realize the above object, the utility model adopts the following technical scheme:
an anti-dead-cycle adsorption device comprises an adsorption air inlet pipeline, a regeneration pipeline, a release pipeline, a first valve, a second valve, a third valve, a fourth valve, a fifth valve, a sixth valve, a vacuum pump, a first adsorption tank and a second adsorption tank;
a group of branch pipes at one end of the adsorption air inlet pipeline are respectively communicated with air inlets of the first adsorption tank and the second adsorption tank;
a group of branch pipes at one end of the regeneration pipeline are respectively communicated with the air inlets of the first adsorption tank and the second adsorption tank;
a group of branch pipes at one end of the release pipeline are respectively communicated with the air outlets of the first adsorption tank and the second adsorption tank;
the third valve and the fourth valve are respectively arranged on a group of branch pipes of the release pipeline;
the first valve and the second valve are respectively arranged on a group of branch pipes of the adsorption air inlet pipeline;
the fifth valve and the sixth valve are respectively arranged on a group of branch pipes of the regeneration pipeline;
the other end of the regeneration pipeline is communicated with an air inlet of a vacuum pump;
when the first valve, the sixth valve and the third valve are opened and the second valve, the fifth valve and the fourth valve are closed, the gas in the adsorption air inlet pipeline is exhausted to the outside after being adsorbed with pollutants by the first adsorption tank, and the vacuum pump can vacuumize the second adsorption tank to restore the adsorption capacity of the second adsorption tank;
when the first valve, the sixth valve and the third valve are closed and the second valve, the fifth valve and the fourth valve are opened, the gas in the adsorption air inlet pipeline is discharged to the outside after the second adsorption tank adsorbs pollutants, and the vacuum pump can vacuumize the first adsorption tank to restore the adsorption capacity of the first adsorption tank.
As an optimized proposal of the utility model, the vacuum pump adopts a dry screw vacuum pump.
As the utility model discloses a preferred scheme, carbon mouth and row carbon mouth have all been seted up to first adsorption tank and second adsorption tank, carbon mouth and row carbon mouth all are provided with blind flange.
As a preferred scheme of the utility model, first adsorption tank and second adsorption tank are the cylinder.
In order to solve the technical problem, the utility model discloses still further provide following technical scheme:
VOCs treatment equipment comprises the anti-death circulating adsorption device;
the system also comprises a communicating pipeline, the communicating pipeline is communicated with the waste gas inlet and the other end of the adsorption air inlet pipeline of the anti-dead-cycle adsorption device, and a pressure transmitter, an induced draft fan, a condenser and a heat exchanger are sequentially connected in series in a communicating manner along the direction from the waste gas inlet to the anti-dead-cycle adsorption device;
and the air outlet of the vacuum pump is communicated with a communication pipeline between the induced draft fan and the condenser through a backflow pipeline.
As a preferred scheme of the utility model, return line switches on with the heat exchanger.
As a preferred scheme of the utility model, the utility model also comprises an oil collecting tank;
the condenser and the heat exchanger are communicated with the oil collecting tank through the condensation recovery pipe.
The utility model discloses the beneficial effect who reaches:
the utility model discloses an adsorb air inlet pipeline, the regeneration pipeline, the cooperation of release pipeline and a plurality of valve, can make first adsorption tank and second adsorption tank parallelly connected to the end of VOCs treatment facility, thereby when first adsorption tank adsorbs and discharges, the vacuum pump can be to the evacuation of second adsorption tank, the evacuation can be closed after finishing, vice versa, the event is through the alternative work of first adsorption tank and second adsorption tank, can make and prevent endless circulation adsorption equipment sustainable work, and can avoid the vacuum pump to be absorbed in the endless circulation of operation.
Drawings
Fig. 1 is a schematic structural diagram of a preferred embodiment of the utility model provides a VOCs treatment equipment.
The meaning of the reference symbols in the figures:
1. a pressure transmitter; 2. an induced draft fan; 3. a condenser; 4. a heat exchanger; 5. a return line; 61. an adsorption air inlet pipeline; 62. a regeneration line; 63. a release line; 64. a vacuum pump; 65. a first adsorption tank; 66. a second adsorption tank; 7. an oil collecting tank; 8. a communicating pipeline; 9. a condensation recovery pipe;
j1, a first valve; j2, a second valve; j3, a third valve; j4, a fourth valve; j5, a fifth valve; j6, a sixth valve.
Detailed Description
The present invention will be further described with reference to the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In prior art, VOCs treatment facility generally includes system's fan, condensing system, the rear end adsorption system that switches on through communicating pipe 8 at present, and the system's fan delivers to condensing system with the gas of abandonment entry, and opening of system's fan is stopped by setting up the pressure transmitter control in system's fan entrance, and rear end adsorption system's vacuum pump export connects in front of the entry of system's fan.
When no gas enters the VOCs treatment equipment from a waste inlet, the rear-end adsorption system still needs to finish the desorption process, the vacuum pump needs to vacuumize the rear-end adsorption system, the rear-end adsorption system generally adsorbs pollutants through an adsorbent (such as activated carbon), gas containing high-concentration pollutants on the adsorbent can be extracted through the vacuum action, the extracted gas containing the high-concentration pollutants is discharged to a system fan for secondary condensation, so that the air pressure of a pipeline in a system fan and a pressure transmitter area is driven to rise, the system fan is started again after the pressure transmitter senses the change of the air pressure, the system fan sends the gas containing the high-concentration pollutants into a condensation system for secondary circulation, the gas containing the high-concentration pollutants enters the rear-end adsorption system after condensation is finished, and the rear-end adsorption system continues to operate the vacuum pump when detecting the gas, so that the vacuum pump falls into dead circulation of continuous operation and cannot stop.
As shown in fig. 1, the embodiment discloses an anti-dead-cycle adsorption device, which aims to solve the above problems, and includes an adsorption air intake pipeline 61, a regeneration pipeline 62, a release pipeline 63, a first valve J1, a second valve J2, a third valve J3, a fourth valve J4, a fifth valve J5, a sixth valve J6, a vacuum pump 64, a first adsorption tank 65, and a second adsorption tank 66; a group of branch pipes at one end of the adsorption air inlet pipeline 61 respectively conduct air inlets of the first adsorption tank 65 and the second adsorption tank 66; a group of branch pipes at one end of the regeneration pipeline 62 respectively conduct the air inlets of the first adsorption tank 65 and the second adsorption tank 66; a group of branch pipes at one end of the release pipeline 63 respectively conduct the air outlets of the first adsorption tank 65 and the second adsorption tank 66; the third valve J3 and the fourth valve J4 are respectively arranged on a group of branch pipes of the release pipeline 63; the first valve J1 and the second valve J2 are respectively arranged on a group of branch pipes of the adsorption air inlet pipeline 61; the fifth valve J5 and the sixth valve J6 are respectively arranged on a group of branch pipes of the regeneration pipeline 62; the other end of the regeneration pipeline 62 is communicated with an air inlet of a vacuum pump 64; when the first valve J1, the sixth valve J6 and the third valve J3 are opened and the second valve J2, the fifth valve J5 and the fourth valve J4 are closed, the gas in the adsorption air intake line 61 is exhausted to the outside after the first adsorption tank 65 adsorbs pollutants, and the vacuum pump 64 can vacuumize the second adsorption tank 66 to restore the adsorption capacity; when the first valve J1, the sixth valve J6 and the third valve J3 are closed and the second valve J2, the fifth valve J5 and the fourth valve J4 are opened, the gas in the adsorption air intake line 61 is exhausted to the outside after the second adsorption tank 66 adsorbs pollutants, and the vacuum pump 64 can evacuate the first adsorption tank 65 to restore the adsorption capacity.
With this prevent end of dying cyclic adsorption device arranging VOCs treatment facility among the prior art in, VOCs treatment facility generally says that tail gas after the condensation sends into this prevent dying cyclic adsorption device, and this prevent dying cyclic adsorption device can adsorb the pollutant in the tail gas and make it discharge to the external world after up to standard.
And this prevent that dead cycle adsorption equipment accepts the tail gas after VOCs treatment facility condensation through adsorbing air intake pipe 61, at this moment, open first valve J1, sixth valve J6 and third valve J3, close second valve J2, fifth valve J5 and fourth valve J4, thereby the tail gas that gets into in adsorbing air intake pipe 61 can get into first adsorption tank 65 in adsorb and discharge, and vacuum pump 64 accessible regeneration pipe 62 carries out the evacuation to second adsorption tank 66, on the contrary, second adsorption tank 66 can adsorb and discharge, first adsorption tank 65 can carry out the evacuation.
In order to enhance the corrosion resistance of the vacuum pump 64, it is preferable that the vacuum pump 64 employs a dry screw vacuum pump 64.
As a result, the tail gas containing the contaminants may have corrosive substances.
In order to facilitate the replacement of the adsorbent, preferably, the first adsorption tank 65 and the second adsorption tank 66 are provided with a carbon adding port and a carbon discharging port, and the carbon adding port and the carbon discharging port are provided with blind flanges.
In order to facilitate the replacement of the adsorbent, it is preferable that the first adsorption tank 65 and the second adsorption tank 66 are cylindrical.
The inner cavity of the cylindrical adsorption tank is generally consistent with the shape, so that the inner cavity of the cylindrical adsorption tank is smoother, and natural discharge of an adsorbent under the gravity condition is facilitated.
VOCs treatment equipment comprises an anti-death circulating adsorption device; the device is characterized by further comprising a communicating pipeline 8, the communicating pipeline 8 is communicated with the waste gas inlet and the other end of the adsorption air inlet pipeline 61 of the anti-dead-cycle adsorption device, and the communicating pipeline 8 is sequentially communicated and connected with the pressure transmitter 1, the draught fan 2, the condenser 3 and the heat exchanger 4 in series along the direction from the waste gas inlet to the anti-dead-cycle adsorption device; and the air outlet of the vacuum pump 64 is communicated with a communication pipeline 8 between the induced draft fan 2 and the condenser 3 through a return pipeline 5.
In the present invention, the return pipe 5 is conducted to the heat exchanger 4.
The gas introduced into the heat exchanger 4 by the return line 5 is independent of the gas introduced into the heat exchanger 4 by the condenser 3.
The utility model also comprises an oil collecting tank 7; the condenser 3 and the heat exchanger 4 are communicated with the oil collecting tank 7 through a condensation recycling pipe 9.
The gas is further condensed by the heat exchanger 4 and collected into the oil collecting tank 7 through the condensation recovery pipe 9.
The utility model discloses an adsorb air inlet pipeline 61, regeneration line 62, the cooperation of release pipeline 63 and a plurality of valve, can make parallelly connected end to VOCs treatment facility of first adsorption tank 65 and second adsorption tank 66, thereby first adsorption tank 65 adsorbs and when discharging, the vacuum pump can be to the evacuation of second adsorption tank 66, vacuum pump 64 can be closed after the evacuation finishes, vice versa, so first adsorption tank 65 and second adsorption tank 66's alternative work, can make and prevent endless circulation adsorption equipment sustainable work, and can avoid vacuum pump 64 to be absorbed in the endless circulation of operation.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. An anti-dead-cycle adsorption device is characterized by comprising an adsorption air inlet pipeline (61), a regeneration pipeline (62), a release pipeline (63), a first valve (J1), a second valve (J2), a third valve (J3), a fourth valve (J4), a fifth valve (J5), a sixth valve (J6), a vacuum pump (64), a first adsorption tank (65) and a second adsorption tank (66);
a group of branch pipes at one end of the adsorption air inlet pipeline (61) are respectively communicated with air inlets of the first adsorption tank (65) and the second adsorption tank (66);
a group of branch pipes at one end of the regeneration pipeline (62) are respectively communicated with air inlets of the first adsorption tank (65) and the second adsorption tank (66);
a group of branch pipes at one end of the release pipeline (63) are respectively communicated with gas outlets of the first adsorption tank (65) and the second adsorption tank (66);
the third valve (J3) and the fourth valve (J4) are respectively arranged on a pair of branch pipes of the release pipeline (63);
the first valve (J1) and the second valve (J2) are respectively arranged on a pair of branch pipes of the adsorption air inlet pipeline (61);
the fifth valve (J5) and the sixth valve (J6) are respectively arranged on a pair of branch pipes of the regeneration pipeline (62);
the other end of the regeneration pipeline (62) is communicated with an air inlet of a vacuum pump (64);
when the first valve (J1), the sixth valve (J6) and the third valve (J3) are opened and the second valve (J2), the fifth valve (J5) and the fourth valve (J4) are closed, the gas in the adsorption air inlet pipeline (61) is exhausted to the outside after the first adsorption tank (65) adsorbs pollutants, and the vacuum pump (64) can vacuumize the second adsorption tank (66) to restore the adsorption capacity of the second adsorption tank;
when the first valve (J1), the sixth valve (J6) and the third valve (J3) are closed, and the second valve (J2), the fifth valve (J5) and the fourth valve (J4) are opened, the gas in the adsorption air inlet pipeline (61) is discharged to the outside after the second adsorption tank (66) adsorbs pollutants, and the vacuum pump (64) can vacuumize the first adsorption tank (65) to restore the adsorption capacity of the first adsorption tank.
2. The anti-deadening cycle adsorption apparatus according to claim 1, wherein the vacuum pump (64) employs a dry screw vacuum pump (64).
3. The anti-circulation adsorption device as claimed in claim 1, wherein the first adsorption tank (65) and the second adsorption tank (66) are provided with a carbon adding port and a carbon discharging port, and the carbon adding port and the carbon discharging port are provided with blind flanges.
4. The anti-deadening cycle adsorption apparatus according to claim 1, wherein the first adsorption tank (65) and the second adsorption tank (66) are each cylindrical.
5. A VOCs remediation plant comprising an anti-fouling cyclic adsorption unit as claimed in any one of claims 1 to 4;
the device is characterized by further comprising a communicating pipeline (8), wherein the communicating pipeline (8) is communicated with the waste gas inlet and the other end of an adsorption air inlet pipeline (61) of the anti-dead-cycle adsorption device, and a pressure transmitter (1), an induced draft fan (2), a condenser (3) and a heat exchanger (4) are sequentially connected in series in a communicating mode through the communicating pipeline (8) along the direction from the waste gas inlet to the anti-dead-cycle adsorption device;
and the air outlet of the vacuum pump (64) is communicated with a communicating pipeline (8) between the draught fan (2) and the condenser (3) through a backflow pipeline (5).
6. A VOCs remediation apparatus according to claim 5, wherein the return conduit (5) is in communication with the heat exchanger (4).
7. A VOCs remediation apparatus according to claim 5 further comprising an oil collection tank (7);
the condenser (3) and the heat exchanger (4) are communicated with the oil collecting tank (7) through a condensation recovery pipe (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221572834.6U CN217855371U (en) | 2022-06-22 | 2022-06-22 | Prevent endless circulation adsorption equipment and VOCs treatment facility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221572834.6U CN217855371U (en) | 2022-06-22 | 2022-06-22 | Prevent endless circulation adsorption equipment and VOCs treatment facility |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217855371U true CN217855371U (en) | 2022-11-22 |
Family
ID=84097550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221572834.6U Active CN217855371U (en) | 2022-06-22 | 2022-06-22 | Prevent endless circulation adsorption equipment and VOCs treatment facility |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217855371U (en) |
-
2022
- 2022-06-22 CN CN202221572834.6U patent/CN217855371U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203899399U (en) | Novel multistage absorbing, purifying and recovering device adopting activated carbon fiber for organic gas | |
| CN217855371U (en) | Prevent endless circulation adsorption equipment and VOCs treatment facility | |
| CN108525481A (en) | A kind of emission-control equipment for cold headers | |
| CN208959584U (en) | Adsoption catalysis integrated treatment unit | |
| CN217041955U (en) | Oil gas recovery device for tank cleaning operation of storage tank | |
| CN217367760U (en) | Oil gas recovery filtering purification device of oil product storage tank | |
| CN215463231U (en) | Tail gas catalytic combustion system for anion resin workshop | |
| CN201316588Y (en) | Organic waste gas adsorption and recycling device | |
| CN216039414U (en) | Flue gas treatment device for recovering coke oven tail coke | |
| CN211562382U (en) | Organic waste gas's recovery processing equipment | |
| CN112138516B (en) | Intelligent collecting and purifying system and collecting and purifying method for ectopic thermal desorption organic pollution waste gas | |
| CN205598866U (en) | Atmosphere dust high -efficiency processing device | |
| CN110841419A (en) | Organic waste gas recovery treatment equipment and recovery treatment method | |
| CN219815765U (en) | VOCs waste gas intelligent concentration recovery processing equipment | |
| CN217698618U (en) | Dimethyl sulfide tail gas recovery equipment | |
| CN218392969U (en) | Macroporous resin waste gas adsorption and desorption system | |
| CN218516407U (en) | Be applied to processing apparatus of water-soluble organic waste gas | |
| CN218741127U (en) | Organic waste gas recovery coupling carbon emission reduction condensing system | |
| CN213513196U (en) | Oil tank gas recovery system | |
| CN220878300U (en) | Laboratory waste gas collecting and treating equipment | |
| CN214598147U (en) | System capable of realizing energy conservation, water conservation, and synergistic removal of common bletilla eliminating pollutants | |
| CN219848933U (en) | Exhaust gas collecting device for exhaust gas treatment engineering | |
| CN219829595U (en) | Waste heat recovery structure for boiler | |
| CN218130890U (en) | New energy battery trade exhaust-gas treatment system | |
| CN214470225U (en) | Flue gas waste heat recoverer for atmospheric pollution treatment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |