CN108676594A - A kind of liquid gas sweetening exhaust gas processing device and method - Google Patents
A kind of liquid gas sweetening exhaust gas processing device and method Download PDFInfo
- Publication number
- CN108676594A CN108676594A CN201810723625.9A CN201810723625A CN108676594A CN 108676594 A CN108676594 A CN 108676594A CN 201810723625 A CN201810723625 A CN 201810723625A CN 108676594 A CN108676594 A CN 108676594A
- Authority
- CN
- China
- Prior art keywords
- removal
- mercaptans
- gas
- exhaust pipe
- sulfuric acid
- 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.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
- C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
- C10L3/10—Working-up natural gas or synthetic natural gas
- C10L3/101—Removal of contaminants
- C10L3/102—Removal of contaminants of acid contaminants
- C10L3/103—Sulfur containing contaminants
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/74—Preparation
Abstract
This application discloses a kind of liquid gas sweetening exhaust gas processing devices, the sulfuric acid production plant being connected to including removal of mercaptans exhaust pipe and with the removal of mercaptans exhaust pipe, the import of the removal of mercaptans exhaust pipe is connected with the exhaust outlet of the Transform of Lpg Sweetening Unit, and the outlet of the removal of mercaptans exhaust pipe is connected with the air inlet of the sulfuric acid production plant.So set, height is discharged into the air after solving the directly dilution of existing liquid gas sweetening tail gas, the problem of not only causing a hidden trouble to environment and safety, but also calorific value is caused to waste.
Description
Technical field
The present invention relates to petrochemical plant process optimization technical fields, more specifically to a kind of desulfuration of liquefied gas
Alcohol exhaust gas processing device and method.
Background technology
Liquefied gas is to carry out pressurization cooling in oil plant by natural gas or oil and liquefy that obtained one kind is colourless to wave
Hair property liquid, the sulphur content in liquefied gas are inorganic sulfur and organic sulfur, inorganic sulfur, that is, hydrogen sulfide；Organic sulfur is mainly methyl mercaptan, second
Mercaptan, also a small amount of dimethyl disulfide, two sulphur of diethyl, two sulphur of Methylethyl, propanethiol, methyl sulfide, carbonyl sulfur etc.；It is inorganic
Sulphur is washed by amine to be easy to remove, and the mercaptan in organic sulfur is then removed by sodium hydroxide alkali elution, and removal of mercaptans is exactly will liquefaction
The technology that mercaptan in gas is removed generally carries out removal of mercaptans, the oxygen in Transform of Lpg Sweetening Unit using sweetening unit
Change tail gas and contain mercaptan and sulfide, have stronger stink, and also have toxic hazard, existing treatment measures are all first to fill
Interior dilution is set, then high altitude discharge, to environment and peace all with larger hidden danger, while causing the waste of calorific value；If used
Dedicated unit processing, because be mainly constituent of air in this strand of gas, and sulfide content therein is less, if using special
It is handled with device, cost is higher.
Therefore, how to solve to be discharged into after the directly dilution of existing liquid gas sweetening tail gas it is high aerial, both to environment and
The problem of causing a hidden trouble safely, and calorific value is caused to waste, becomes professional and technical personnel in the field's important technology to be solved and asks
Topic.
Invention content
To overcome the problems, such as at least to a certain extent present in the relevant technologies, this application provides a kind of desulfuration of liquefied gas
Alcohol exhaust gas processing device and method are discharged into height in the air after solving the directly dilution of existing liquid gas sweetening tail gas, both right
The problem of environment is with causing a hidden trouble safely, and calorific value being caused to waste.
The present invention provides a kind of liquid gas sweetening exhaust gas processing device, including removal of mercaptans exhaust pipe and with it is described de-
The sulfuric acid production plant of mercaptan exhaust pipe connection, import and the Transform of Lpg Sweetening Unit of the removal of mercaptans exhaust pipe
Exhaust outlet be connected, the outlet of the removal of mercaptans exhaust pipe is connected with the air inlet of the sulfuric acid production plant.
Preferably, it is provided with tail gas liquid separation tank on the removal of mercaptans exhaust pipe, the gas after the tail gas liquid separation tank
Body enters the sulfuric acid production plant.
Preferably, the sulfuric acid production plant include relieving haperacidity pyrolysis furnace, be located at relieving haperacidity pyrolysis furnace upstream for will
The nozzle that the tail gas sprays into the relieving haperacidity pyrolysis furnace and the sulphuric acid plant for being located at relieving haperacidity pyrolysis furnace downstream, and the spray
One end of head passes through air inlet and the institute of the sulfuric acid production plant with the outlet of the removal of mercaptans exhaust pipe, the other end
Relieving haperacidity pyrolysis furnace is stated to be connected.
Preferably, the water washing device positioned at the tail gas liquid separation tank downstream is additionally provided on the removal of mercaptans exhaust pipe.
Preferably, the water washing device is the water washing tank for being loaded with water.
Preferably, the air inlet of the water washing tank is arranged in the middle part of the side wall of the water washing tank, the row of the water washing tank
Gas port is arranged at the top of the water washing tank.
Preferably, further include the first valve for separating the tail gas high altitude discharge pipeline in the Transform of Lpg Sweetening Unit
Door.
Preferably, the material of the removal of mercaptans exhaust pipe is stainless steel.
Preferably, the removal of mercaptans exhaust pipe is provided with the second valve, and institute can be opened or be closed to second valve
State removal of mercaptans exhaust pipe.
The present invention also provides a kind of liquid gas sweetening exhaust gas treating methods, including step：
Removal of mercaptans processing is carried out to liquefied gas；
The sulfur-containing tail gas that removal of mercaptans processing generates carries out Pintsch process reaction, generates sulfur dioxide；
Relieving haperacidity processing is carried out to sulfur dioxide.
The technical solution that embodiments herein provides can include the following benefits：It is produced in Transform of Lpg Sweetening Unit
Raw tail gas enters sulfuric acid production plant by removal of mercaptans pipeline, burns in sulfuric acid production plant, in the case of a high temperature
Thermal cracking is carried out, the element sulphur reaction production sulfur dioxide in gas is being handled as the raw material of subsequent sulphuric acid process units
The effect turned waste into wealth is also achieved while exhaust gas.So set, it is directly dilute to solve existing liquid gas sweetening tail gas
The problem of it is aerial to discharge height after releasing, not only caused a hidden trouble with safe to environment, but also calorific value is caused to waste.
It should be understood that above general description and following detailed description is only exemplary and explanatory, not
The application can be limited.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the application
Example, and the principle together with specification for explaining the application.
Fig. 1 is the structural schematic diagram of liquid gas sweetening exhaust gas processing device in the embodiment of the present invention.
In figure：
1- Transform of Lpg Sweetening Unit, 2- removal of mercaptans exhaust pipes, 3- sulfuric acid production plants, 4- tail gas liquid separation tanks, 5- sprays
Head, 6- water washing tanks, 7- tail gas high altitude discharge pipelines.
Specific implementation mode
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended
The example of consistent device and method of some aspects be described in detail in claims, the application.
Present embodiment provides a kind of liquid gas sweetening exhaust gas processing device, solves existing liquefaction qi exhaustion
It is aerial that height is discharged into after the directly dilution of mercaptan tail gas, the problem of not only causing a hidden trouble to environment and safety, but also calorific value is caused to waste.
To make the object, technical solutions and advantages of the present invention clearer, technical scheme of the present invention will be carried out below
Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work
Other embodiment belongs to the range that the present invention is protected.
Hereinafter, being illustrated to embodiment with reference to attached drawing.In addition, embodiments illustrated below is not to recorded in claim
Invention content rise any restriction effect.In addition, the full content of the composition represented by following example is not limited to as right
It is required that necessary to the solution of recorded invention.
With reference to figure 1, present embodiment provides a kind of liquid gas sweetening exhaust gas processing device, as shown in Figure 1, packet
Include removal of mercaptans exhaust pipe 2 and the sulfuric acid production plant being connected to removal of mercaptans exhaust pipe 23, the import of removal of mercaptans exhaust pipe 2
It is connected with the exhaust outlet of Transform of Lpg Sweetening Unit 1, the air inlet of the outlet and sulfuric acid production plant 3 of removal of mercaptans exhaust pipe 2
Mouth is connected, and the tail gas generated in Transform of Lpg Sweetening Unit 1 enters sulfuric acid production plant 3 by removal of mercaptans pipeline 2, in sulfuric acid
It burns in process units 3, carries out thermal cracking in the case of a high temperature, the element sulphur reaction in gas is produced into sulfur dioxide,
As the raw material of subsequent sulphuric acid process units 3, the effect turned waste into wealth is also achieved while handling exhaust gas.
So set, liquid gas sweetening exhaust gas processing device provided by the present application, solves existing desulfuration of liquefied gas
It is aerial that height is discharged into after the directly dilution of alcohol tail gas, the problem of not only causing a hidden trouble to environment and safety, but also calorific value is caused to waste.
In the preferred embodiment of the present embodiment, tail gas liquid separation tank 4 is provided on removal of mercaptans exhaust pipe 2, from liquefaction qi exhaustion
The sulfur-containing tail gas being discharged in mercaptan device 1 first passes through tail gas liquid separation tank 4 and takes off liquid, and gas and liquid are detached, are then demultiplex out
Gas enters sulfuric acid production plant 3, so set, liquid has been avoided to enter sulfuric acid production plant 3, efficiently avoids gas and exists
It is mingled with water droplet when burning in sulfuric acid production plant 3, increases safety coefficient.
Further, it connects for convenience, the air inlet of tail gas liquid separation tank 4 is arranged in the side wall of tail gas liquid separation tank 4
The exhaust outlet in portion, tail gas liquid separation tank 4 is arranged at the top of tail gas liquid separation tank 4.
It should be noted that sulfuric acid production plant 3 include relieving haperacidity pyrolysis furnace, be located at relieving haperacidity pyrolysis furnace upstream for by tail
The sulphuric acid plant that gas blowout enters the nozzle 5 in relieving haperacidity pyrolysis furnace and is located at relieving haperacidity pyrolysis furnace downstream, one end and the removal of mercaptans tail of nozzle 5
Outlet, the other end of feed channel 2 pass through the air inlet of sulfuric acid production plant 3 to be connected with relieving haperacidity pyrolysis furnace, from removal of mercaptans
The gas that exhaust pipe 2 is discharged is injected directly by nozzle 5 in relieving haperacidity pyrolysis furnace, and high-temp combustion, cracking, oxidation etc. are carried out
Reason goes sulphuric acid plant to carry out Sulphuric acid to be oxidized to sulfur dioxide with sulfur dioxide gas in stove.
Wherein, sulfur-containing tail gas is sprayed into relieving haperacidity pyrolysis furnace using nozzle 5, gas is disperseed, gas and system can be increased
The contact area of acid cleavage stove makes gas burn more abundant.
In the preferred embodiment of the present embodiment, when gas burns in relieving haperacidity pyrolysis furnace in order to prevent, flame passes through removal of mercaptans
Exhaust pipe 2 enters Transform of Lpg Sweetening Unit 1, and the water positioned at 4 downstream of tail gas liquid separation tank is additionally provided on removal of mercaptans exhaust pipe 2
Cleaning device, the gas being discharged from tail gas liquid separation tank 4 cross water by water washing device, then spray into relieving haperacidity pyrolysis furnace using nozzle 5,
In this way, preventing from being tempered.
Further, water washing device is the water washing tank 6 for being loaded with water, and the air inlet of water washing tank 6 is arranged in the side of water washing tank 6
The exhaust outlet at the middle part of wall, water washing tank 6 is arranged at the top of water washing tank 6.
Due to containing tail gas high altitude discharge pipeline 7 in Transform of Lpg Sweetening Unit 1, in order to avoid Transform of Lpg Sweetening Unit
The tail gas of 1 discharge is discharged into aerial pollution environment from tail gas high altitude discharge pipeline 7, therefore, the processing unit further include for every
First valve of docking gas high altitude discharge pipeline 7.
Further, the inlet of sulfurous gas in sulfuric acid production plant 3, removal of mercaptans exhaust pipe 2 are controlled for convenience
It is provided with the second valve, the second valve can open or close the channel of removal of mercaptans exhaust pipe 2.
Preferably, the material of removal of mercaptans exhaust pipe 2 is stainless steel, and stainless steel is the abbreviation of stainless acid resistant steel, resistance to air,
The weak corrosive medium such as steam, water or the steel grade with rustless property are known as stainless steel, and resistant to chemical etching and electrochemical corrosion performance exists
It is best, heat-resisting, high temperature resistant, also low temperature resistant even resistance to ultralow temperature inside steel.Stainless steel not will produce burn into spot corrosion,
Corrosion or abrasion, have it is corrosion-resistant, enhancing intensity, deformation of steel is not easily broken and environmental-protecting performance, be suitable for adverse circumstances (it is wet,
The indoor external environment such as soda acid) under some hardware facilities for using.It is of course also possible to use other satisfactory materials.
The present invention also provides a kind of liquid gas sweetening exhaust gas treating methods, including step：
Removal of mercaptans processing is carried out to liquefied gas；
The sulfur-containing tail gas that removal of mercaptans processing generates carries out Pintsch process reaction, generates sulfur dioxide；
Relieving haperacidity processing is carried out to sulfur dioxide.
The processing procedure of the liquid gas sweetening exhaust gas processing device in the present embodiment is detailed below：Liquefied gas
It is introduced into Transform of Lpg Sweetening Unit 1 and carries out removal of mercaptans operation, the tail gas being discharged by Transform of Lpg Sweetening Unit 1 first passes through tail
Qi leel flow container 4 takes off liquid, and the gas being then discharged from tail gas liquid separation tank 4, which enters, crosses water in water washing tank 6, spray into and make using nozzle 5
The burning cracking of acid cleavage furnace high-temperature, is oxidized to sulfur dioxide, sulphuric acid plant system is gone with sulfur dioxide gas in stove
Sulfuric acid.
It should be noted that the words such as " first " " second " for being stated herein, are not the limitations to particular order, only
It is only intended to distinguish all parts or function." middle part " " top " illustrated is to be in the processing unit as Fig. 1 puts shape
Meaning when state.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
It is understood that same or similar part can mutually refer in the various embodiments described above, in some embodiments
Unspecified content may refer to same or analogous content in other embodiment.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest range caused.
Claims (10)
1. a kind of liquid gas sweetening exhaust gas processing device, which is characterized in that taken off including removal of mercaptans exhaust pipe (2) and with described
The sulfuric acid production plant (3) of mercaptan exhaust pipe (2) connection, the import of the removal of mercaptans exhaust pipe (2) and desulfuration of liquefied gas
The exhaust outlet of alcohol device (1) is connected, the outlet of the removal of mercaptans exhaust pipe (2) and the sulfuric acid production plant (3) into
Gas port is connected.
2. processing unit as described in claim 1, which is characterized in that be provided with tail gas on the removal of mercaptans exhaust pipe (2)
Liquid separation tank (4), the gas after the tail gas liquid separation tank (4) enter the sulfuric acid production plant (3).
3. processing unit as described in claim 1, which is characterized in that the sulfuric acid production plant (3) include relieving haperacidity pyrolysis furnace,
Be located at relieving haperacidity pyrolysis furnace upstream for by nozzle (5) that the tail gas sprays into the relieving haperacidity pyrolysis furnace and described in being located at
The sulphuric acid plant in relieving haperacidity pyrolysis furnace downstream, and one end of the nozzle (5) and the outlet of the removal of mercaptans exhaust pipe (2) connect
The logical, other end passes through the air inlet of the sulfuric acid production plant (3) to be connected with the relieving haperacidity pyrolysis furnace.
4. processing unit as claimed in claim 2, which is characterized in that be additionally provided with and be located on the removal of mercaptans exhaust pipe (2)
The water washing device in tail gas liquid separation tank (4) downstream.
5. processing unit as claimed in claim 4, which is characterized in that the water washing device is the water washing tank (6) for being loaded with water.
6. processing unit as claimed in claim 5, which is characterized in that the air inlet of the water washing tank (6) is arranged in the water
The exhaust outlet at the middle part of the side wall of cleaning of evaporator (6), the water washing tank (6) is arranged at the top of the water washing tank (6).
7. processing unit as described in claim 1, which is characterized in that further include for separating the Transform of Lpg Sweetening Unit
(1) the first valve of the tail gas high altitude discharge pipeline (7) in.
8. processing unit as described in claim 1, which is characterized in that the material of the removal of mercaptans exhaust pipe (2) is stainless
Steel.
9. processing unit as described in claim 1, which is characterized in that the removal of mercaptans exhaust pipe (2) is provided with the second valve
The removal of mercaptans exhaust pipe (2) can be opened or be closed to door, second valve.
10. a kind of liquid gas sweetening exhaust gas treating method, which is characterized in that including step：
Removal of mercaptans processing is carried out to liquefied gas；
The sulfur-containing tail gas that removal of mercaptans processing generates carries out Pintsch process reaction, generates sulfur dioxide；
Relieving haperacidity processing is carried out to sulfur dioxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810723625.9A CN108676594A (en) | 2018-07-04 | 2018-07-04 | A kind of liquid gas sweetening exhaust gas processing device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810723625.9A CN108676594A (en) | 2018-07-04 | 2018-07-04 | A kind of liquid gas sweetening exhaust gas processing device and method |
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| Publication Number | Publication Date |
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| CN108676594A true CN108676594A (en) | 2018-10-19 |
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| CN201810723625.9A Pending CN108676594A (en) | 2018-07-04 | 2018-07-04 | A kind of liquid gas sweetening exhaust gas processing device and method |
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| JPH09155187A (en) * | 1995-12-12 | 1997-06-17 | Nippon Chem Ind Co Ltd | Activated carbon for adsorbing acidic gas and production thereof |
| US6342651B1 (en) * | 1999-08-05 | 2002-01-29 | Novus International, Inc. | Reductive combustion of ammonium salts of sulfuric acid |
| CN101670220A (en) * | 2009-09-28 | 2010-03-17 | 烟台市金河保险粉厂有限公司 | Treatment method for waste gas produced in preparation process of sodium hydrosulfite |
| CN102093911A (en) * | 2009-12-11 | 2011-06-15 | 济南开发区星火科学技术研究院 | Device for removing sulfur and alcohol from gasoline |
| CN202430071U (en) * | 2012-01-13 | 2012-09-12 | 宁波中一石化科技有限公司 | Device for desulfurizing and neutralizing caustic sludge of liquefied gas |
| CN203061041U (en) * | 2013-02-06 | 2013-07-17 | 山东寿光鲁清石化有限公司 | Liquefied gas mercaptan removing tail gas treatment device |
| CN103771607A (en) * | 2012-10-23 | 2014-05-07 | 中国石油化工股份有限公司 | Treatment method of alkaline residue waste liquid from oil refining |
| CN208667621U (en) * | 2018-07-04 | 2019-03-29 | 山东寿光鲁清石化有限公司 | A kind of liquid gas sweetening exhaust gas processing device |
-
2018
- 2018-07-04 CN CN201810723625.9A patent/CN108676594A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1049299A (en) * | 1989-08-10 | 1991-02-20 | 杭州大学 | Sulfur-bearing organic catalyst to burned waste gas and preparation method thereof |
| JPH09155187A (en) * | 1995-12-12 | 1997-06-17 | Nippon Chem Ind Co Ltd | Activated carbon for adsorbing acidic gas and production thereof |
| US6342651B1 (en) * | 1999-08-05 | 2002-01-29 | Novus International, Inc. | Reductive combustion of ammonium salts of sulfuric acid |
| CN101670220A (en) * | 2009-09-28 | 2010-03-17 | 烟台市金河保险粉厂有限公司 | Treatment method for waste gas produced in preparation process of sodium hydrosulfite |
| CN102093911A (en) * | 2009-12-11 | 2011-06-15 | 济南开发区星火科学技术研究院 | Device for removing sulfur and alcohol from gasoline |
| CN202430071U (en) * | 2012-01-13 | 2012-09-12 | 宁波中一石化科技有限公司 | Device for desulfurizing and neutralizing caustic sludge of liquefied gas |
| CN103771607A (en) * | 2012-10-23 | 2014-05-07 | 中国石油化工股份有限公司 | Treatment method of alkaline residue waste liquid from oil refining |
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| CN208667621U (en) * | 2018-07-04 | 2019-03-29 | 山东寿光鲁清石化有限公司 | A kind of liquid gas sweetening exhaust gas processing device |
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