CN105642108A - Method and system for recycling and treating CO in metallurgical industry - Google Patents
Method and system for recycling and treating CO in metallurgical industry Download PDFInfo
- Publication number
- CN105642108A CN105642108A CN201610006261.3A CN201610006261A CN105642108A CN 105642108 A CN105642108 A CN 105642108A CN 201610006261 A CN201610006261 A CN 201610006261A CN 105642108 A CN105642108 A CN 105642108A
- Authority
- CN
- China
- Prior art keywords
- reaction
- temperature plasma
- recycling
- low temperature
- plasma device
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/864—Removing carbon monoxide or hydrocarbons
-
- 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
- B01D53/32—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 electrical effects other than those provided for in group B01D61/00
-
- 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
- B01D53/62—Carbon oxides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/50—Carbon oxides
- B01D2257/502—Carbon monoxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/818—Employing electrical discharges or the generation of a plasma
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Biomedical Technology (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Catalysts (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for recycling and treating CO in the metallurgical industry, which is simple and quick in operation, low in energy consumption and few in by-products, and can recycle heat energy effectively. The method comprises the following steps: (1) adding a particle catalyst into a low-temperature plasma reactor; (2) turning on a power supply, and applying a voltage to the low-temperature plasma reactor; (3) introducing the waste gas to be treated, which contains CO with specified concentration, into the low-temperature plasma reactor; (4) enabling CO to be in self-sustained combustion under a plasma chemical reaction and a thermal chemical reaction induced by the increment of a background temperature; and (5) turning off the power supply. The invention also provides a system adopting the method.
Description
Technical field
The invention belongs to the technical field that energy recovery utilizes, specifically relate to the method for CO recycling in a kind of metallurgy industry, and adopt the system of the method.
Background technology
At present, converter steelmaking is the main method for making steel of China, and converter steelmaking can produce coal gas of high temperature (the about 150-180m containing high concentration CO3/ t). CO contains a large amount of chemical heat, and CO �� CO2The calorific value of oxidising process can reach 9MJ/Nm3. Therefore, metallurgy industry generally carries out coal-gas recovering for CO.
But, the discontinuity produced due to coal gas of converter and recovery process, to the requirement of gas quality, do not meet the coal gas of converter (O of recovering condition in a large number2Content>2% or CO content<35%) diffused into atmospheric environment by direct ignition, and this kind of traditional treatment method adopts ever-burning flame igniting, companion to burn, and complex process, causes serious energy dissipation and environmental pollution.
Catalyticcombustion is a kind of method producing applicable generating institute heat requirement efficiently, and CO can be made to be oxidized to CO at a lower temperature2��CH4Control oneself in catalyticing combustion process, CH4/O2Mixed gas is first catalyzed at catalyst surface, produces localized hyperthermia's point; Then, the division of these high temperature dots is to adjacent CH4And O2On molecule, cause thermochemistry to be escaped, it is converted to strong self-sustaining burning subsequently rapidly. By CH4Catalyticcombustion of controlling oneself inspires, if CO �� CO2There is self-sustaining burning phenomenon in oxidising process, then brings two obvious advantages equally: (1) efficiency of combustion height, and reactor and front-end investment are little; (2) energy consumption is low, and self-sustaining burning just no longer needs extraneous offer energy once beginning.
In recent years, ignite due to plasma body and there is strong electronics initiation and the synergistic effect of thermochemical process, namely capable of fast starting at normal temperatures, therefore it is subject to the great attention of Chinese scholars. Discharge process can make gas molecular ionization, excite or attract electrons becomes negative ion, thus causes plasma chemical reaction; And the rising of ambient temperature not only can induce thermal chemical reaction also can affect the physical properties of plasma body. But, the transformation efficiency of simple low-temperature plasma system and capacity usage ratio are not high, and may produce some harmful side product in reaction process, cause secondary pollution.
By low-temperature plasma and catalyzer conbined usage, tool in reduction energy consumption and minimizing by product generation has great advantage, and is day by day subject to the favor of people.
It is noted that the CO catalysis self-sustaining burning method ignited for low-temperature plasma yet there are no relevant report.
Summary of the invention
The technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, it is provided that a kind of method of CO recycling in metallurgy industry, it is simple to operate, quick, and energy consumption is low, and by product is few, and can efficient recovery heat energy.
The technical solution of the present invention is: the method for CO recycling in this kind of metallurgy industry, and the method comprises the following steps:
(1) in reaction of low temperature plasma device, beaded catalyst is added;
(2) opening power, applies voltage on reaction of low temperature plasma device;
(3) lead in reaction of low temperature plasma device into the pending waste gas containing prescribed concentration CO;
(4) under plasma chemical reaction and ambient temperature raise the thermal chemical reaction effect induced, CO develops into self-sustaining burning;
(5) powered-down.
Owing to the present invention adopts low-temperature plasma united catalyst process CO, the synergy of low-temperature plasma and catalyzer makes CO react on catalyst surface and progressively develop into self-sustaining burning, at this time powered-down, do not need to provide outside energy CO catalysis self-sustaining burning to maintain down always, therefore, compared with tradition metallurgy industry CO recovery method, the present invention is simple to operate, quick, and energy consumption is low, by product is few, and can efficient recovery heat energy.
Additionally providing the system of CO recycling in a kind of metallurgy industry, it comprises power supply, reaction of low temperature plasma device, inlet pipe, vapor pipe; Lead to the entrance that the inlet pipe into the pending waste gas containing prescribed concentration CO is connected to reaction of low temperature plasma device, beaded catalyst is added in reaction of low temperature plasma device, reaction of low temperature plasma device is applied voltage by power supply, and vapor pipe is connected to the outlet of reaction of low temperature plasma device.
Accompanying drawing explanation
Fig. 1 is the schema of the method for CO recycling in the metallurgy industry according to the present invention;
Fig. 2 is the structural representation of the system of CO recycling in the metallurgy industry according to the present invention;
Fig. 3 is the CO self-sustaining burning curve that low-temperature plasma united catalyst ignites.
Embodiment
As shown in Figure 1, the method for CO recycling in this kind of metallurgy industry, the method comprises the following steps:
(1) in reaction of low temperature plasma device, beaded catalyst is added;
(2) opening power, applies voltage on reaction of low temperature plasma device;
(3) lead in reaction of low temperature plasma device into the pending waste gas containing prescribed concentration CO;
(4) under plasma chemical reaction and ambient temperature raise the thermal chemical reaction effect induced, CO develops into self-sustaining burning;
(5) powered-down.
Owing to the present invention adopts low-temperature plasma united catalyst process CO, the synergy of low-temperature plasma and catalyzer makes CO react on catalyst surface and progressively develop into self-sustaining burning, at this time powered-down, do not need to provide outside energy CO catalysis self-sustaining burning to maintain down always, therefore, compared with tradition metallurgy industry CO recovery method, the present invention is simple to operate, quick, and energy consumption is low, by product is few, and can efficient recovery heat energy.
In addition, the method performs at normal temperatures and pressures. So do not need to provide other equipment to heat pressurization, greatly reduce cost.
In addition, described beaded catalyst is the porous composite metal oxide of Ce/Zr doping.
In addition, described beaded catalyst is loaded catalyst, and carrier is TiO2����-Al2O3, ZSM-5, active ingredient is the combination of one or more metals in Cu, Co, Mn, Ni, Zn.
In addition, the volumetric concentration of described CO is 2%-40%.
In addition, the frequency of described power supply is power frequency, intermediate frequency, high frequency or radio frequency.
In addition, the system of CO recycling in a kind of metallurgy industry, it comprises power supply, reaction of low temperature plasma device, inlet pipe, vapor pipe; Lead to the entrance that the inlet pipe into the pending waste gas containing prescribed concentration CO is connected to reaction of low temperature plasma device, beaded catalyst is added in reaction of low temperature plasma device, reaction of low temperature plasma device is applied voltage by power supply, and vapor pipe is connected to the outlet of reaction of low temperature plasma device.
In addition, described reaction of low temperature plasma device is the plasma reactor of corona discharge, dielectric barrier discharge or ferroelectrics packed bed electric discharge type.
Further, described reaction of low temperature plasma device is pipeline quartz medium barrier discharge reactor.
In addition, this system is also provided with gas detection cell, and its two ends connect inlet pipe, vapor pipe respectively. The concentration of the CO in inlet pipe, the clean gas in vapor pipe can be detected like this, carry out test for operator and judge.
Illustrative example below, illustrates the CO self-sustaining burning method that low-temperature plasma associating catalysis of the present invention is ignited.
Embodiment 1: technical process is as shown in Figure 1. At pipeline quartz medium barrier discharge reactor (internal diameter 15mm, thickness 1.5mm, electric discharge useful length 50mm) interior filler particles shape CuZr/TiO2Catalyzer (granular size 10��30 order), lead to into the air containing 15%CO, flow 3L/min, reactor applies 80W alternating-current (frequency 8700Hz), self-sustaining burning phenomenon can be there is in 20s post-reactor, turning off power supply subsequently, self-sustaining burning phenomenon maintains always, and the transformation efficiency of CO is all up to 100%.
Embodiment 2: technical process is as shown in Figure 1. At pipeline quartz medium barrier discharge reactor (internal diameter 15mm, thickness 1.5mm, electric discharge useful length 50mm) interior filler particles shape CuCeZr/TiO2Catalyzer (granular size 10��30 order), lead to into the air containing 10%CO, flow 3L/min, reactor applies 60W alternating-current (frequency 9000Hz), self-sustaining burning phenomenon can be there is in 30s post-reactor, turning off power supply subsequently, self-sustaining burning phenomenon maintains always, and the transformation efficiency of CO is all up to 100%.
The present invention has following useful effect:
1) CO self-sustaining burning method provided by the invention be under the synergy of low-temperature plasma associating catalysis under ignite, process of igniting is rapidly, effectively.
2) the CO self-sustaining burning method that low-temperature plasma associating catalysis is ignited does not need to add any auxiliary fuel, avoids the complicated technology of traditional C O burn processing, has effectively saved the energy.
3) the ignite process of CO of low-temperature plasma associating catalysis carries out at normal temperatures and pressures, and simple to operate, quick, system starts easily, it is possible to adapt to the intermittently discharged of waste gas well.
4) once generation CO self-sustaining burning phenomenon gets final product powered-down in reaction of low temperature plasma device, when not needing to provide outside energy, self-sustaining burning phenomenon can maintain always, effectively reduces costs.
5) the CO self-sustaining burning that low-temperature plasma associating catalysis is ignited is the flameless combustion that catalyst surface occurs, and combustion initiation temperature reduces greatly compared with traditional CO flaming combustion, thus greatly shortens process of igniting.
The above; it it is only the better embodiment of the present invention; the present invention not does any restriction in form, and every any simple modification, equivalent variations and modification above embodiment done according to the technical spirit of the present invention, all still belongs to the protection domain of technical solution of the present invention.
Claims (10)
1. the method for CO recycling in a metallurgy industry, it is characterised in that: the method comprises the following steps:
(1) in reaction of low temperature plasma device, beaded catalyst is added;
(2) opening power, applies voltage on reaction of low temperature plasma device;
(3) lead in reaction of low temperature plasma device into the pending waste gas containing prescribed concentration CO;
(4) under plasma chemical reaction and ambient temperature raise the thermal chemical reaction effect induced, CO develops into self-sustaining burning;
(5) powered-down.
2. the method for CO recycling in metallurgy industry according to claim 1, it is characterised in that: the method performs at normal temperatures and pressures.
3. the method for CO recycling in metallurgy industry according to claim 2, it is characterised in that: described beaded catalyst is the porous composite metal oxide of Ce/Zr doping.
4. the method for CO recycling in metallurgy industry according to claim 2, it is characterised in that: described beaded catalyst is loaded catalyst, and carrier is TiO2����-Al2O3, ZSM-5, active ingredient is the combination of one or more metals in Cu, Co, Mn, Ni, Zn.
5. the method for CO recycling in metallurgy industry according to claim 4, it is characterised in that: the volumetric concentration of described CO is 2%-40%.
6. the method for CO recycling in metallurgy industry according to claim 1, it is characterised in that: the frequency of described power supply is power frequency, intermediate frequency, high frequency or radio frequency.
7. the system of CO recycling in a metallurgy industry according to claim 1, it is characterised in that: it comprises power supply, reaction of low temperature plasma device, inlet pipe, vapor pipe; Lead to the entrance that the inlet pipe into the pending waste gas containing prescribed concentration CO is connected to reaction of low temperature plasma device, beaded catalyst is added in reaction of low temperature plasma device, reaction of low temperature plasma device is applied voltage by power supply, and vapor pipe is connected to the outlet of reaction of low temperature plasma device.
8. the system of CO recycling in metallurgy industry according to claim 7, it is characterised in that: described reaction of low temperature plasma device is the plasma reactor of corona discharge, dielectric barrier discharge or ferroelectrics packed bed electric discharge type.
9. the system of CO recycling in metallurgy industry according to claim 8, it is characterised in that: described reaction of low temperature plasma device is pipeline quartz medium barrier discharge reactor.
10. the system of CO recycling in metallurgy industry according to claim 7, it is characterised in that: this system is also provided with gas detection cell, and its two ends connect inlet pipe, vapor pipe respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610006261.3A CN105642108B (en) | 2016-01-06 | 2016-01-06 | The method and system of CO recovery processing in a kind of metallurgy industry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610006261.3A CN105642108B (en) | 2016-01-06 | 2016-01-06 | The method and system of CO recovery processing in a kind of metallurgy industry |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105642108A true CN105642108A (en) | 2016-06-08 |
| CN105642108B CN105642108B (en) | 2018-11-20 |
Family
ID=56491616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610006261.3A Active CN105642108B (en) | 2016-01-06 | 2016-01-06 | The method and system of CO recovery processing in a kind of metallurgy industry |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105642108B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107477595A (en) * | 2017-08-31 | 2017-12-15 | 中国科学院力学研究所 | A kind of device for the solid pollutant that gasified based on the plasmatorch for not being in the mood for auger |
| CN109945665A (en) * | 2019-03-28 | 2019-06-28 | 中国科学院力学研究所 | A kind of low CO concentration smoke catalytic burning and regeneration sensible heat recovery method and system |
| CN110345499A (en) * | 2019-07-31 | 2019-10-18 | 中国科学院力学研究所 | Plasma fluidizes the self-holding catalysis burning converter emission coal gas method, apparatus of bed |
| CN113559702A (en) * | 2020-07-24 | 2021-10-29 | 河南大学 | CO catalytic oxidation system and CO catalytic oxidation method |
| CN114797464A (en) * | 2022-06-01 | 2022-07-29 | 宁波工程学院 | Device and method for online elimination of CO based on plasma technology |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1809413A (en) * | 2003-06-17 | 2006-07-26 | 日铁矿业株式会社 | Gas processing method and gas processing apparatus utilizing oxidation catalyst and low-temperature plasma |
| CN101596015A (en) * | 2009-06-25 | 2009-12-09 | 河南中烟工业公司 | Reduce additive of CO in smoke of cigarettes and its production and application |
| CN202762284U (en) * | 2012-09-11 | 2013-03-06 | 中钢集团马鞍山矿山研究院有限公司 | Low-temperature plasma reaction tube for harmful gas purification |
| CN104084012A (en) * | 2014-07-15 | 2014-10-08 | 浙江惠尔涂装环保设备有限公司 | Low-temperature plasma waste gas processing method |
-
2016
- 2016-01-06 CN CN201610006261.3A patent/CN105642108B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1809413A (en) * | 2003-06-17 | 2006-07-26 | 日铁矿业株式会社 | Gas processing method and gas processing apparatus utilizing oxidation catalyst and low-temperature plasma |
| CN101596015A (en) * | 2009-06-25 | 2009-12-09 | 河南中烟工业公司 | Reduce additive of CO in smoke of cigarettes and its production and application |
| CN202762284U (en) * | 2012-09-11 | 2013-03-06 | 中钢集团马鞍山矿山研究院有限公司 | Low-temperature plasma reaction tube for harmful gas purification |
| CN104084012A (en) * | 2014-07-15 | 2014-10-08 | 浙江惠尔涂装环保设备有限公司 | Low-temperature plasma waste gas processing method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107477595A (en) * | 2017-08-31 | 2017-12-15 | 中国科学院力学研究所 | A kind of device for the solid pollutant that gasified based on the plasmatorch for not being in the mood for auger |
| CN109945665A (en) * | 2019-03-28 | 2019-06-28 | 中国科学院力学研究所 | A kind of low CO concentration smoke catalytic burning and regeneration sensible heat recovery method and system |
| CN110345499A (en) * | 2019-07-31 | 2019-10-18 | 中国科学院力学研究所 | Plasma fluidizes the self-holding catalysis burning converter emission coal gas method, apparatus of bed |
| CN113559702A (en) * | 2020-07-24 | 2021-10-29 | 河南大学 | CO catalytic oxidation system and CO catalytic oxidation method |
| CN114797464A (en) * | 2022-06-01 | 2022-07-29 | 宁波工程学院 | Device and method for online elimination of CO based on plasma technology |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105642108B (en) | 2018-11-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105642108A (en) | Method and system for recycling and treating CO in metallurgical industry | |
| CN104359113B (en) | A kind of waste gas, liquid waste incineration system and method | |
| CN104807021A (en) | Process and system for treating vinyl cyanide tail gas by high temperature burning method | |
| CN110342461A (en) | A kind of reactor assembly and its starting method based on formic acid cracking hydrogen | |
| Bhattacharyya et al. | Discharge plasma combined with bauxite residue for biodiesel exhaust cleaning: A case study on NO x removal | |
| CN102658012A (en) | Method and device for treating high-concentration malodorous gas | |
| CN102392762A (en) | Efficient energy-saving eco-friendly car | |
| CN103539068A (en) | Completely-closed thermo-chemical cycling water-based hydrogen making system and power supply device | |
| CN103272478A (en) | Method and device for catalytic reduction denitration | |
| CN203750405U (en) | Safety SNCR (Selective Non Catalytic Reduction) denitration device | |
| CN203002211U (en) | Ozone decomposing device | |
| CN205876452U (en) | Automobile exhaust gas processing device | |
| CN106979526B (en) | Low-temperature plasma rapid ignition method for VOCs catalytic self-sustaining combustion | |
| CN209752537U (en) | Vehicle-mounted active carbon movable desorption device | |
| CN204152632U (en) | The triple production integrated electricity generating device of hydrogen energy source thermoelectricity gas | |
| CN203731440U (en) | System for treating acrylonitrile tail gas through high-temperature combustion method | |
| CN210198110U (en) | Denitration treatment equipment for sintering flue gas | |
| CN210495928U (en) | Organic waste gas catalytic oxidation equipment with waste heat recycling function | |
| CN202048588U (en) | Novel cooking stove combustion promoting device | |
| CN203404784U (en) | Ammonia tail gas treatment device | |
| CN208186383U (en) | A kind of combustible waste gas treatment equipment with waste heat recycling | |
| CN103877852A (en) | Ozone decomposition method and apparatus thereof | |
| CN204939416U (en) | A kind of refuse embedded gas device for deoxidizing | |
| CN205598874U (en) | Chemical industry toluene tail gas processing apparatus | |
| CN205361006U (en) | Waste gas treatment device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |