CN114657582A - SF (sulfur hexafluoride)6Electrochemical degradation method of waste gas - Google Patents

SF (sulfur hexafluoride)6Electrochemical degradation method of waste gas Download PDF

Info

Publication number
CN114657582A
CN114657582A CN202210368975.4A CN202210368975A CN114657582A CN 114657582 A CN114657582 A CN 114657582A CN 202210368975 A CN202210368975 A CN 202210368975A CN 114657582 A CN114657582 A CN 114657582A
Authority
CN
China
Prior art keywords
gas
cathode
anode
region
electrode
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.)
Pending
Application number
CN202210368975.4A
Other languages
Chinese (zh)
Inventor
肖淞
李祎
彭瑞超
陈钇江
曾福平
潘成
唐炬
张晓星
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan University WHU
Original Assignee
Wuhan University WHU
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wuhan University WHU filed Critical Wuhan University WHU
Priority to CN202210368975.4A priority Critical patent/CN114657582A/en
Publication of CN114657582A publication Critical patent/CN114657582A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/17—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
    • C25B9/19—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/24—Halogens or compounds thereof
    • C25B1/245—Fluorine; Compounds thereof
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/02—Process control or regulation
    • C25B15/023—Measuring, analysing or testing during electrolytic production

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Automation & Control Theory (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Abstract

The invention discloses an SF6A method of electrochemical degradation of exhaust gas, the method comprising: assembling an electrolytic cell comprising an anode region, a cathode region, and a membrane separating the anode region and the cathode region; wherein the anode area adopts a Pt mesh electrode as an anode, and the electrolyte of the anode chamber comprises AgNO3And H2SO4A solution; the cathode area adopts a Cu electrode as a cathode, a saturated calomel electrode as a reference electrode, and electrolyte of the cathode chamber comprises a nickel cyanide complex and a KOH solution; charging the cathode region with SF6An exhaust gas; pressurizing the anode, the cathode and the reference electrode to perform an electrolysis reaction, and collecting a gas-phase product and a liquid-phase productThe product was analyzed. The method has simple steps, is environment-friendly, has high degradation rate, and is detected to be SF6The degradation rate of the composite material reaches 82-92%.

Description

SF (sulfur hexafluoride)6Electrochemical degradation method of waste gas
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to SF6A method for electrochemical degradation of exhaust gases.
Background
SF6Insulation performance is 2.5 times of air, arc extinguishing performance is about 100 times of air, and the SF is surrounded6Electric power equipment designed and developed is widely used. Despite SF6Has many excellent properties, but has an extremely strong greenhouse effect, and is a limited emission gas, SF, regulated in environmental convention6Is always a concern in the environmental field. In recent years, SF has been developed in accordance with the development of the power industry6The amount of the insulating gas used also tends to increase, as the most representative insulating gas.
SF6Listed as one of six limiting gases, the other five of which are carbon dioxide (CO)2) Methane (CH)4) Nitrous oxide (N)2O), Hydrofluorocarbons (HFCs), Perfluorocarbons (PFCs), wherein SF6Is the gas with the highest greenhouse effect value per unit volume. SF6The GWP value of (B) is CO223500 times of that of other greenhouse gases, and simultaneously SF6The stability is very strong, and the product can stably exist in the atmosphere for thousands of years. Thus, it can be seen that SF6Has strong environmental significance for reducing emission, SF6The treatment of waste gas has huge economic benefits and social benefits at present.
Therefore, there is a need to develop an SF6An environment-friendly treatment method of waste gas.
Disclosure of Invention
The invention aims to provide SF6Electrochemical degradation method of waste gas, easy separation of productsSimple and environment-friendly steps, high degradation rate and SF detection6The degradation rate of the composite material reaches 82-92%.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides an SF6A method of electrochemical degradation of exhaust gas, the method comprising:
assembling an electrolytic cell comprising an anode region, a cathode region, and a membrane separating the anode region and the cathode region; wherein the anode area adopts a Pt mesh electrode as an anode, and the electrolyte of the anode chamber comprises AgNO3And H2SO4A solution; the cathode area adopts a Cu electrode as a cathode, a saturated calomel electrode as a reference electrode, and electrolyte of the cathode chamber comprises a nickel cyanide complex and a KOH solution;
charging the cathode region with SF6An exhaust gas;
pressurizing the anode, the cathode, and the reference electrode to perform an electrolysis reaction, and collecting gas phase products and liquid phase products for analysis.
Further, the electrolyte of the anode chamber is added with AgNO with the concentration range of 20-30 mM34.5-5.5M of H2SO4And (3) solution.
Furthermore, the electrolyte of the cathode chamber is 9.5-10.5M KOH solution added with nickel cyanide complex with the concentration ranging from 45-55 mM.
Further, the membrane is
Figure BDA0003587085470000021
32 type diaphragm.
Further, the charging of SF into the cathode region6The exhaust gas specifically includes:
a gas conveying device is arranged and comprises a gas tank, a gas pipeline and a ball valve arranged on the gas pipeline, one end of the gas pipeline is communicated with the gas tank, the other end of the gas pipeline is communicated with the cathode area, and SF (sulfur hexafluoride) is arranged in the gas tank6An exhaust gas;
opening the ball valve toFilling SF into the cathode region6And (4) exhaust gas.
Further, the SF6The exhaust gas is SF6Ar mixed gas of SF and6the content of (A) is 5% -15%.
Further, the pressurizing the anode, the cathode and the reference electrode specifically includes:
electrically connecting an electrochemical workstation with the anode, the cathode and the reference electrode, respectively, and pressurizing through the electrochemical workstation.
Furthermore, the pressurizing time is 3-5 h, and the working voltage range is 1.5-2.5V.
Further, the anode area with the cathode area all is equipped with gaseous phase product eduction tube and liquid phase product eduction tube, through gaseous phase product eduction tube and liquid phase product eduction tube collect gaseous phase product and liquid phase product.
Further, the collecting of the gas-phase product and the liquid-phase product for analysis specifically includes:
measuring oxidation-reduction potential by using a potentiometric titration device to prove the occurrence degree of the reaction;
detecting the gas phase product using a gas detector;
the liquid phase product was detected using an ion analyzer.
One or more technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:
1. the embodiment of the invention provides an SF6Method for electrochemical degradation of exhaust gas, degradation of SF6The method can be used for reaction at room temperature, requires less energy, and has great advantages for industrial application of degradation methods.
2. Degradation of SF using electrochemical degradation process6Can mix SF6Toxic gas OF obtained as a product OF degradation OF toxic gas in cathode cell2、SOF2And SO2The gas product is completely absorbed in the anode pool to obtain a non-toxic product HF-2Fluoride ions in the form of fluoride ions and sulfate ions.
3. By electrochemistryThe method can obtain inorganic salt and sulfate product containing fluorine ions with industrial application value, and has high degradation rate and SF detection6The degradation rate of the composite material reaches 82-92%.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 shows an SF according to an embodiment of the present invention6A structural view of an assembled electrolytic cell in a method for electrochemical degradation of exhaust gas; 1: SF6Gas tank, 2: gas transmission pipeline, 3: ball valve, 4: gas-phase product delivery pipe, 5: liquid-phase product delivery pipe, 6: electrochemical workstation, 7: reference electrode, 8: working electrode (cathode), 9: diaphragm, 10: a counter electrode (anode); 11: a valve;
FIG. 2 shows an SF according to an embodiment of the present invention6Flow diagram of a method for electrochemical degradation of exhaust gas.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to specific embodiments and examples, and the advantages and various effects of the embodiments of the present invention will be more clearly apparent therefrom. It will be understood by those skilled in the art that the present embodiments and examples are illustrative of the present invention and are not to be construed as limiting the present invention.
Throughout the specification, unless otherwise specifically noted, terms used herein should be understood in accordance with the meanings commonly used in the art. Accordingly, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which embodiments of the invention belong. If there is a conflict, the present specification will control.
Unless otherwise specifically stated, various raw materials, reagents, instruments, equipment and the like used in the examples of the present invention are commercially available or can be prepared by an existing method.
In order to solve the technical problems, the embodiment of the invention provides the following general ideas:
according to an exemplary embodiment of the present invention, an SF is provided6A method for electrochemical degradation of exhaust gas, as shown in fig. 2, the method comprising:
step S1, assembling an electrolytic cell, wherein the electrolytic cell comprises an anode region, a cathode region and a diaphragm for separating the anode region and the cathode region; wherein the anode area adopts a Pt mesh electrode as an anode, and the electrolyte of the anode chamber comprises AgNO3And H2SO4A solution; the cathode area adopts a Cu electrode as a cathode, a saturated calomel electrode as a reference electrode, and electrolyte of the cathode chamber comprises a nickel cyanide complex and a KOH solution;
specifically, in the step S1,
the electrolyte in the anode chamber is added with AgNO with the concentration range of 20 mM-30 mM3(4.5-5.5) M H2SO4And (3) solution. AgNO in the concentration range3And H of said concentration range2SO4The reasons for the solution are: AgNO in electrolytic process3It is required to maintain the active state in a strongly acidic environment, if AgNO3Too large or too small concentration can affect the adverse effect of the reaction balance of the anode pool; if H2SO4Excessive or insufficient concentration of AgNO3Adverse effects of reduced activity;
the electrolyte in the cathode chamber is KOH solution of (9.5-10.5) M added with nickel cyanide complex with the concentration range of (45-55 mM). The reason for using the concentration range of nickel cyanide complex and the concentration range of KOH solution is: in the electrolytic process, the nickel cyanide complex needs to keep activity in a strong alkali environment, and if the concentration of the nickel cyanide complex is too high or too low, the adverse effect on the reaction balance of a cathode pool is influenced; if the KOH concentration is too high or too low, the activity of the nickel cyanide complex is reduced, which has adverse effects;
the diaphragm is
Figure BDA0003587085470000041
Type 32 separator. In other embodiments, cation exchange membranes such as Nafion117, Nafion212, Nafion115, and the like may also be used.
As a specific embodiment, in fig. 1, reference numeral 11 is a small valve for separating two sides when detecting respective gas products of the cathode and the anode, and opening the valve to communicate gas paths during electrolysis.
Step S2, filling SF into the cathode region6An exhaust gas;
the step S2 specifically includes:
a gas conveying device is arranged and comprises a gas tank, a gas pipeline and a ball valve arranged on the gas pipeline, one end of the gas pipeline is communicated with the gas tank, the other end of the gas pipeline is communicated with the cathode area, and SF (sulfur hexafluoride) is filled in the gas tank6An exhaust gas;
opening the ball valve to charge SF into the cathode region6And (4) exhaust gas.
The SF6The exhaust gas is SF6-Ar mixed gas of SF6In the SF6The volume ratio of the-Ar mixed gas is 5-15%. By using SF6The advantages or reasons of the Ar mixed gas are: ar gas is used as exhaust gas background gas to help control SF6Slowly introducing the solution to allow SF to be dissolved6The solution can be fully dissolved, and the reaction can be carried out at the cathode, so that the reaction can be continuously and efficiently carried out; too much Ar addition leads to SF charging6Too slow a rate affecting the reaction rate, too little addition resulting in SF6Can not be dissolved in the solution in time, so that SF6Escape, affecting degradation efficiency;
step S3, pressurizing the anode, the cathode and the reference electrode to perform an electrolytic reaction, and collecting gas phase products and liquid phase products for analysis.
The step S3 specifically includes:
electrically connecting an electrochemical workstation with said anode, said cathode and said reference electrode, respectively, and pressurizing through said electrochemical workstation.
The above-mentionedThe pressurizing time is 3-5 h, and the working voltage range is 1.5-2.5V. The range of pressures and times of said pressurization is favorable for SF6Fully degrading;
the anode area with the cathode area all is equipped with gaseous phase result eduction tube and liquid phase result eduction tube, through gaseous phase result eduction tube and liquid phase result eduction tube collect gaseous phase result and liquid phase result.
Additionally or alternatively, measurement of ORP (oxidation reduction potential) using a potentiometric titration device demonstrates the extent of the reaction taking place.
In addition or alternatively, gas production in the cathode region anode region is detected using a gas detector (FITR in-line gas analyzer).
Additionally or alternatively, an ion analyzer is used to detect ionic products produced in the anode cell of the cathode cell.
In the electrolytic reaction of the present invention, the electrochemical reaction equation involved is:
(1) cathode pool: ni2++e-→Ni+
Figure BDA0003587085470000051
Figure BDA0003587085470000052
(2) Anode pool:
Figure BDA0003587085470000053
Figure BDA0003587085470000054
Figure BDA0003587085470000056
(3) the overall reaction equation:
Figure BDA0003587085470000055
in summary, the present invention provides an SF6The electrochemical degradation method of the waste gas has simple steps and is environment-friendly, and the product is easy to separate.
An SF according to the present application will be described below with reference to examples and comparative experimental data6The electrochemical degradation method of exhaust gas is explained in detail.
Example 1
Assembling an electrolytic cell comprising an anode region, a cathode region, and a membrane separating the anode region and the cathode region; wherein the anode area adopts a Pt mesh electrode as an anode, and the electrolyte in the anode chamber is added with 25mMAGNO35M H2SO4A solution; the cathode area adopts a Cu electrode as a cathode, a saturated calomel electrode as a reference electrode, and electrolyte of the cathode area is 10M KOH solution added with 50mM nickel cyanide complex;
charging the cathode region with SF6An exhaust gas;
and pressurizing the anode and the cathode for 4h (the working voltage ranges from 1.5V to 2.5V) to perform an electrolytic reaction, and collecting a gas-phase product and a liquid-phase product for analysis.
After the electrolysis is stopped, the target product is obtained by separation, and the fluorine-containing ion inorganic salt and the sulfate product with industrial application value are obtained, and meanwhile, the degradation rate is high, and the detected SF6The degradation rate of the catalyst reaches 92 percent.
Example 2
In this example, 20mM AGNO was added to the electrolyte in the anode compartment34.5M H2SO4A solution; the electrolyte in the cathode chamber is 9.5M KOH solution added with 45mM nickel cyanide complex; the other steps are the same as in example 1.
After the electrolysis is stopped, the target product is obtained by separation, the fluoride ion-containing inorganic salt and the sulfate product with industrial application value are obtained, meanwhile, the degradation rate is high,detected SF6The degradation rate of the product reaches 87 percent.
Example 3
In this example, the electrolyte in the anode compartment was added with 30mM AGNO35.5M H2SO4A solution; the electrolyte in the cathode chamber is 10.5M KOH solution added with 55mM nickel cyanide complex; the other steps are the same as in example 1.
After the electrolysis is stopped, the target product is obtained by separation, and the fluorine-containing ion inorganic salt and the sulfate product with industrial application value are obtained, and meanwhile, the degradation rate is high, and the detected SF6The degradation rate of the product reaches 82 percent.
Comparative example 1
In this comparative example, 10mM AGNO was added as the electrolyte in the anode compartment3And 3M H2SO4The solution was electrolyzed under the same conditions as in example 1 to obtain the desired product, and the degradation rate was 23%.
Comparative example 2
In this comparative example, the electrolyte in the cathode chamber was added with 30mM nickel cyanide complex and 6M KOH solution under the same conditions as in example 1, and the desired product was isolated with a yield of 29%.
Comparative example 3
In this comparative example, the working electrode (cathode) was changed to a nickel electrode, and the target product was isolated under the same other conditions as in example 1, and the yield was 57%.
Comparative example 4
In this comparative example, the operating voltage was 1.0V, the electrolysis time was 30min, and the target product was isolated under the same conditions as in example 1, with a yield of 17%.
Experimental example 1
For comparison, the experimental parameters of each example and each comparative example are shown in Table 1.
TABLE 1
Figure BDA0003587085470000061
Figure BDA0003587085470000071
As can be seen from the data in Table 1:
comparative example 1 AgNO in Anode compartment electrolyte3And H2SO4The proportion of the solution is not appropriate and is not in the range of the embodiment of the invention, and the degradation rate is only 23 percent;
in comparative example 2, the ratio of nickel cyanide complex to KOH solution in the electrolyte in the cathode compartment was not appropriate and outside the scope of the example of the present invention, the degradation rate was only 29%;
in comparative example 3, the electrode was not suitable and the degradation rate was low;
in comparative example 4, the working voltage is too low, the degradation time is short, and the degradation rate is only 17%;
in examples 1 to 3 of the present invention, SF6The degradation rate of the composite material reaches 82-92%, which is higher than that of comparative examples 1-4.
Finally, it should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the embodiments of the present invention and their equivalents, the embodiments of the present invention are also intended to encompass such modifications and variations.

Claims (10)

1. SF (sulfur hexafluoride)6A method for electrochemical degradation of exhaust gas, comprising:
assembling an electrolytic cell comprising an anode region, a cathode region, and a membrane separating the anode region and the cathode region; wherein the anode area adopts a Pt mesh electrode as an anode, and the electrolyte of the anode chamber comprises AgNO3And H2SO4A solution; the cathode area adopts a Cu electrode as a cathode, a saturated calomel electrode as a reference electrode, and electrolyte of the cathode chamber comprises a nickel cyanide complex and a KOH solution;
charging the cathode region with SF6An exhaust gas;
pressurizing the anode, the cathode, and the reference electrode to perform an electrolysis reaction, and collecting gas phase products and liquid phase products for analysis.
2. SF according to claim 16The electrochemical degradation method of the waste gas is characterized in that AgNO with the concentration range of 20-30 mM is added into the electrolyte of the anode chamber34.5-5.5M of H2SO4And (3) solution.
3. SF according to claim 16The method for electrochemically degrading exhaust gas is characterized in that the electrolyte in the cathode chamber is 9.5-10.5M KOH solution added with nickel cyanide complex with the concentration of 45-55 mM.
4. SF according to claim 16The electrochemical degradation method of the waste gas is characterized in that the diaphragm is
Figure FDA0003587085460000011
And (3) a diaphragm.
5. SF according to claim 16Method for electrochemical degradation of exhaust gases, characterized in that said cathode region is charged with SF6Exhaust gases, in particularThe method comprises the following steps:
a gas conveying device is arranged and comprises a gas tank, a gas pipeline and a ball valve arranged on the gas pipeline, one end of the gas pipeline is communicated with the gas tank, the other end of the gas pipeline is communicated with the cathode area, and SF (sulfur hexafluoride) is arranged in the gas tank6An exhaust gas;
opening the ball valve to charge SF into the cathode region6And (4) exhaust gas.
6. An SF according to claim 1 or 56Process for the electrochemical degradation of exhaust gases, characterized in that said SF6The exhaust gas is SF6-Ar mixed gas of SF6The content of (A) is 5% -15%.
7. SF according to claim 16The method for electrochemically degrading exhaust gas, characterized in that the pressurizing of the anode, the cathode and the reference electrode specifically comprises:
electrically connecting an electrochemical workstation with the anode, the cathode and the reference electrode, respectively, and pressurizing through the electrochemical workstation.
8. SF according to claim 16The electrochemical degradation method of the waste gas is characterized in that the pressurization time is 3-5 h, and the working voltage range is 1.5V-2.5V.
9. SF according to claim 16The electrochemical degradation method of the waste gas is characterized in that the anode area and the cathode area are both provided with a gas-phase product delivery pipe and a liquid-phase product delivery pipe, and the gas-phase product and the liquid-phase product are collected through the gas-phase product delivery pipe and the liquid-phase product delivery pipe.
10. SF according to claim 16The electrochemical degradation method of the waste gas is characterized in that the gas-phase products and the liquid-phase products are collected for analysis, and the method specifically comprises the following steps:
measuring oxidation-reduction potential by using a potentiometric titration device to prove the occurrence degree of the reaction;
detecting the gas phase product using a gas detector;
the liquid phase product was detected using an ion analyzer.
CN202210368975.4A 2022-04-08 2022-04-08 SF (sulfur hexafluoride)6Electrochemical degradation method of waste gas Pending CN114657582A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210368975.4A CN114657582A (en) 2022-04-08 2022-04-08 SF (sulfur hexafluoride)6Electrochemical degradation method of waste gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210368975.4A CN114657582A (en) 2022-04-08 2022-04-08 SF (sulfur hexafluoride)6Electrochemical degradation method of waste gas

Publications (1)

Publication Number Publication Date
CN114657582A true CN114657582A (en) 2022-06-24

Family

ID=82035309

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210368975.4A Pending CN114657582A (en) 2022-04-08 2022-04-08 SF (sulfur hexafluoride)6Electrochemical degradation method of waste gas

Country Status (1)

Country Link
CN (1) CN114657582A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105755499A (en) * 2016-03-31 2016-07-13 张玲 Method for electrolytic preparation of sulfur hexafluoride
FR3043095A1 (en) * 2015-10-30 2017-05-05 Centre Nat De La Rech Scient (Cnrs) SF6 GAS ELECTRO-REDUCTION PROCESS AND REACTOR

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3043095A1 (en) * 2015-10-30 2017-05-05 Centre Nat De La Rech Scient (Cnrs) SF6 GAS ELECTRO-REDUCTION PROCESS AND REACTOR
CN105755499A (en) * 2016-03-31 2016-07-13 张玲 Method for electrolytic preparation of sulfur hexafluoride

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MUTHURAMAN GOVINDAN ET AL: ""Electrochemical sequential reduction and oxidation facilitates the continual ambient temperature degradation of SF6 to nontoxic gaseous compounds"", 《CHEMICAL ENGINEERING JOURNAL》, vol. 382, pages 122881 *

Similar Documents

Publication Publication Date Title
EP3027554B1 (en) Electrolytic enrichment method for heavy water
CN106698352A (en) Method and device for preparing high-purity fluorine gas or high-purity fluorine-containing mixed gas
JP2014003021A (en) Trivalent vanadium ion electrolyte, manufacturing method thereof and vanadium battery
CN212247228U (en) Contain salt waste water recycling apparatus based on electrolysis hydrogen manufacturing technique
CN105664682A (en) Method for deeply desulfurizing molten salt and recycling flue gas
CN103866344B (en) A kind of method of electrolytic preparation nitric acid
CN114657582A (en) SF (sulfur hexafluoride)6Electrochemical degradation method of waste gas
Wei et al. Effects of H2O2 accumulation on the synthesis performances of the sulfite fuel cell
CN101280432B (en) Electrolytic apparatus for regenerating waste acid produced by acid cleaning of stainless steel, regeneration method therefor
CN111636073A (en) Device and process for recycling salt-containing wastewater
Balaji et al. Influence of cathode on the electro-generation of peroxydisulfuric acid oxidant and its application for effective removal of SO2 by room temperature electro-scrubbing process
CN113262636A (en) Extraction-electromigration coupling separation and enrichment7Method for Li isotope
CN114935598A (en) Detection method for gas-liquid phase product after SF6 degradation
Peng et al. Electrochemical oscillation of vanadium ions in anolyte
CN114774946A (en) Two-step water electrolysis hydrogen production device based on three-electrode system and application thereof
CN111996541B (en) Indirect hydrogen sulfide electrolysis method and device for improving hydrogen yield
Wang et al. Electromigration separation of lithium isotopes: The effect of electrolytes
CN107837649A (en) A kind of method of fountain simultanously desulfurizing and denitrification
CN117039083B (en) Regeneration method of electrolyte of iron-chromium flow battery
CN114941142B (en) Anolyte for high-efficiency decomposition of hydrogen sulfide and electrolysis and regeneration method thereof
JP2693801B2 (en) Electrochemical generation of N2O5
CN217114472U (en) Hydrogen purification device for fuel cell
CN110158112B (en) Electrochemical oxidation IO3-Conversion to IO4-By electrolysis of
CN117210825B (en) Electrolysis control system and control method for preparing nitrogen trifluoride
KR102120679B1 (en) Mediated electrochemical removal method of sulfur hexafluoride, and its system

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination