CN107224863A - A kind of electrochemistry assistant chemical absorbs the method and device of phosphine gas - Google Patents
A kind of electrochemistry assistant chemical absorbs the method and device of phosphine gas Download PDFInfo
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- CN107224863A CN107224863A CN201710575810.3A CN201710575810A CN107224863A CN 107224863 A CN107224863 A CN 107224863A CN 201710575810 A CN201710575810 A CN 201710575810A CN 107224863 A CN107224863 A CN 107224863A
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- 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
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- 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
- B01D53/326—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 in electrochemical cells
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- 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
- B01D53/96—Regeneration, reactivation or recycling of reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/106—Peroxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/60—Inorganic bases or salts
- B01D2251/608—Sulfates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/55—Compounds of silicon, phosphorus, germanium or arsenic
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- Sustainable Development (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Electrodes For Compound Or Non-Metal Manufacture (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses the method and device that a kind of electrochemistry assistant chemical absorbs phosphine gas, method comprises the following steps：(1) hydrogen phosphide tail gas is pressed into gas pressurized room by the air pump that pressurizes, phosphine gas, which is passed through, to be entered gas absorption chamber and incorporates in the mixed liquor of copper sulphate and ionic liquid after gas diffusion anode, hydrogen phosphide and copper sulphate reaction generation phosphate and copper simple substance；(2) air diffuses to cathode electrode surface by gas diffusion cathode, the proton that oxygen components are transmitted under the effect of negative electrode negative potential with anode, which is combined, is reduced into hydrogen peroxide, further oxidation retention is dissolved in the remaining phosphine gas in electrolyte, realizes that hydrogen phosphide fully absorbs degraded；Copper simple substance regenerates copper sulphate in the presence of hydrogen peroxide and sulfuric acid simultaneously, and the absorption of hydrogen phosphide is participated in again.The present invention realizes that hydrogen phosphide fully absorbs degraded, and the copper simple substance for absorbing hydrogen phosphide generation regenerates copper sulphate in the presence of hydrogen peroxide and sulfuric acid, and the absorption of hydrogen phosphide is participated in again.
Description
Technical field
The present invention relates to a kind of processing method of phosphine gas, belong to technical field of waste gas treatment.
Background technology
Hydrogen phosphide (PH3) it is a kind of colourless, hypertoxic, inflammable gas, occur mainly with grain depot fumigant insect killing, secondary phosphorus
During sour sodium production, semi-conductor industry, phosphorus production and sludge settling etc..Because phosphine gas has severe toxicity, when its
Concentration is 2~4mg/m in air3When, people can smell its smell；When its in atmosphere concentration be more than 9.7mg/m3When, people can be caused
Poisoning；When its in atmosphere concentration be 550~830mg/m3When, death can occur in 0.5~1.0 hour after people's contact；
When its in atmosphere concentration more than 2798mg/m3When, it can make one rapid lethal.In order to prevent the gaseous mixture containing phosphine gas
Pollution and biological murder by poisoning of the body to environment, must be handled phosphine gas before discharge.
In currently available technology to phosphine waste gas carry out absorption cleaning apparatus and method mainly have combustion method, wet method and
Dry method.Wherein combustion method is traditional hydrogen phosphide processing method, and generation of burning is blended in incinerator by hydrogen phosphide and air
Phosphoric acid smog, gained smog is passed through the phosphoric acid that technical grade is made in absorption tower, but the shortcoming of the method is that incinerator is added using electricity
Heat, belongs to high-energy equipment, and the phosphoric acid smog of generation has stronger corrosivity, and each section of temperature difference of incinerator to reactor
Greatly, it is unfavorable for safety in production, also there is gas leakage.Wet-treating hydrogen phosphide is to use sodium hypochlorite for absorbent, raw
Into relatively stable phosphoric acid salt, have the disadvantage：The accessory substance chlorine for producing big quantitative response causes secondary pollution, it is hypochlorous chemically
Matter is unstable, is extremely easy in decomposition, fails, it is necessary to frequently change absorbing liquid, increases extra cost.Dry process hydrogen phosphide is using work
Property charcoal hydrogen phosphide is adsorbed, but without change hydrogen phosphide chemical property, weak point be absorption after activated carbon to adopt
With or burning or parsing method carry out post-processing, however it remains pollution problem.Above method either chemical transfer method and
Absorption method, mostly more or less causes a certain degree of secondary pollution.
The content of the invention
The present invention provides the hydrogen phosphide processing method that a kind of electrochemistry assistant chemical absorbs, and phosphatization Hydrogen Energy is fully absorbed, together
When, chemical absorbing liquid energy is enough recycled.
A kind of method that electrochemistry assistant chemical absorbs phosphine gas, comprises the following steps：
(1) hydrogen phosphide tail gas is pressed into gas pressurized room by the air pump that pressurizes, phosphine gas is through gas diffusion sun
Extremely enter gas absorption chamber afterwards and incorporate in the mixed liquor of copper sulphate and ionic liquid, hydrogen phosphide and copper sulphate reaction generation phosphoric acid
Salt and copper simple substance；
(2) air diffuses to cathode electrode surface by gas diffusion cathode, and oxygen components are under the effect of negative electrode negative potential
The proton transmitted with anode, which is combined, is reduced into hydrogen peroxide, and further oxidation retention is dissolved in the remaining phosphine gas in electrolyte,
Realize that hydrogen phosphide fully absorbs degraded；Copper simple substance regenerates copper sulphate in the presence of hydrogen peroxide and sulfuric acid simultaneously, joins again
With the absorption of hydrogen phosphide.
The present invention is in hydrogen phosphide electrochemistry absorption plant, and phosphine containing waste gas is pumped into by gas pressurized, through gas
Body diffusion anodes, most of hydrogen phosphide dissolves in electricity by chemical absorbent sulfuric acid Copper uptakie, generation phosphoric acid and copper, remaining hydrogen phosphide
Solve in liquid, air diffuses to cathode electrode surface by gas diffusion cathode, oxygen components under the effect of negative electrode negative potential with sun
The proton of pole transmission, which is combined, is reduced into hydrogen peroxide, so that further oxidation retention is dissolved in the remaining phosphine gas in electrolyte,
So as to realize that hydrogen phosphide fully absorbs degraded, the copper simple substance for absorbing hydrogen phosphide generation is given birth to again in the presence of hydrogen peroxide and sulfuric acid
Into copper sulphate, the absorption of hydrogen phosphide is participated in again.
Being electrolysed the specific reaction equation occurred in absorbing liquid is：
(1)4CuSO4+PH3+4H2O→4Cu↓+H3PO4+4H2SO4
(2)O2+2H2O+2e-→H2O2+2OH-
(3)H2O2+PH3+2OH-→HPO3 2-+5H2O
(4)Cu+H2O2+H2SO4=CuSO4+2H2O
Diffusion anodes electrode of the present invention can be disperseed to the gas of phosphine containing.Waste gas is dispersed into some
Small and weak air-flow, adds the contact area of gas-liquid, increases reaction probabilities so that hydrogen phosphide can fully be inhaled in the electrolytic solution
Receive.
Preferably, the air pressure of compression pump is 0.5MPa-1.5MPa.
Copper sulphate is dissolved in by ionic liquid as absorbing liquid using the mixed liquor of copper sulphate and ionic liquid in the present invention
In body, it is preferable that in the mixed liquor, concentration of copper sulfate is 0.05mol/L-0.15mol/L.It is further preferred that copper sulphate
Concentration is 0.08mol/L-0.12mol/L；Most preferably, concentration of copper sulfate is 0.1mol/L, and suitable concentration of copper sulfate can
Ensure to fully absorb when absorbing high concentration hydrogen phosphide.
Preferably, the ionic liquid is potassium chloride ions liquid, and ionic liquid has high conductivity, can be more efficient
The generation hydrogen peroxide and copper sulphate of rate, ionic liquid hardly possible is volatilized, the absorption with hydrogen phosphide under different temperatures can be used by not burning.
Potassium chloride ions liquid sheet as prior art, can refer to document " Xianzhe Shi, Lizhen Qiao,
Guowang Xu,Recent development of ionic liquid stationary phases for liquid
It is prepared by chromatography, Journal of Chromatography A, 13 (2015), the method disclosed in 1-15 ".
Preferably, the current density for controlling gas diffusion cathode is 100A/m2-300A/m2.Further preferably electricity electric current is close
Spend for 180~220A/m2；Most preferably 200A/m2, suitable current density ensure that the generation of the hydrogen peroxide of high concentration, high
While the hydrogen peroxide of concentration can absorb hydrogen phosphide with quickly regenerate copper sulphate under effect of sulfuric acid
The present invention also provides the device that a kind of electrochemistry assistant chemical absorbs phosphine gas, and method of the invention is preferably led to
Cross in device realization, including telescopic reactor, the telescopic reactor and be followed successively by gas pressurized room, gas from the inside to the outside
Diffusion anodes electrode, gas absorption chamber and gas diffusion cathode electrode；The gas pressurized room carries air inlet；The gas expands
Dissipate and connected between anode electrode and gas diffusion cathode electrode by wire and connect battery.
Preferably, the thickness of the gas diffusion anode electrode and gas diffusion cathode electrode is 0.5mm~2mm.Enter
One step is preferably 0.5~1mm；Most preferably 1mm.
Preferably, the spacing between the gas diffusion anode electrode and gas diffusion cathode electrode is 5cm~50cm.Enter
Preferably, the spacing between the gas diffusion anode electrode and gas diffusion cathode electrode is 10~15cm to one step；；Most preferably,
Spacing between the gas diffusion anode electrode and gas diffusion cathode electrode is 10cm, and suitable electrode spacing can reduce
The resistance of reactor, increases the generating rate of copper sulphate, less energy consumption.
It is further preferred that the gas diffusion anode electrode is multi-layered electrode, the number of plies is 1-3 layers.Further preferably, institute
The anode electrode number of plies stated is 3 layers, and suitable number of electrodes is capable of the flow of fully dispersed gas, and increase dissolubility lifting absorbs
Effect.When electrode is multilayer, the spacing between gas diffusion anode electrode and gas diffusion cathode electrode refers to closest
Spacing.
Preferably, the ratio of height to diameter of the telescopic reactor is 3:1~10:1.More preferably 4~6:1；Most preferably
For 5:1.Footpath in ratio of height to diameter refers to the outermost layer internal diameter of reactor.
Gas diffusion anode and the gas diffusion cathode sheet is as prior art, it is preferable that the gas diffusion anode
By activated carbon and carbon black in mass ratio 1:2~1:5 prepare；It is further preferred that activated carbon is 1 with carbon black ratio:2, close
Suitable ratio can efficiently in oxidative absorption waste gas hydrogen phosphide, while excellent ventilative of diffusion anodes electrode can be kept
Property.
Specific operating method is as follows：Take activated carbon 10g and carbon black 20g to be dissolved in ethanol solution (300mL), be sufficiently stirred for
Polytetrafluoroethylene (PTFE) 60g is added after 1h, 1h is stirred for, then heating evaporation ethanol, to dough, then passes through roll squeezer at 80 DEG C
Doughy mixture is compressed on the diffusion electrode that thickness is 1mm is made on stainless (steel) wire, 20 points are finally calcined at 340 DEG C
Gas-diffusion electrode is made after clock.
Cathode electrode deposits nickel by Linear Circulation voltammetry in nickel sulfate solution in electrode surface, and anode electrode is three
Ruthenic chloride deposits ruthenium by Linear Circulation voltammetry in electrode surface.
In summary, it is an advantage of the invention that absorbing hydrogen phosphide using copper-bath, gaseous hydrogen phosphide is converted to
The phosphate of liquid, while the copper simple substance of generation regenerates copper sulphate under electrochemical action, non-secondary pollution is one high
Effect, the invention all to protection health and atmospheric environment with positive effect.
Compared with prior art, beneficial effects of the present invention：
(1) it is an advantage of the invention that realizing fully absorbing for phosphine waste gas, and absorbing liquid copper sulphate is produced in electrochemistry
Being capable of repetitive cycling utilization, the generation of non-secondary pollution under raw hydrogen peroxide and effect of sulfuric acid.
(2) electrochemical appliance of the invention can produce the hydrogen peroxide of high concentration in ionic liquid, in hydrogen peroxide and sulfuric acid
It ensure that the hydrogen phosphide of high concentration is fully absorbed under the double-absorption of copper.
(3) present invention is by the use of ionic liquid as electrolyte, and non-volatile, non-combustible, electric conductivity is strong, adds whole device
Security.
(4) present invention is applied widely, goes for the phosphine gas of different scales various concentrations.
(5) apparatus of the present invention can realize that mechano-electronicization is operated, and reduce person works' intensity, improve to personnel's
Security protection, whole device and process safety effectively, simple possible, can engineering amplification, thoroughly solve hydrogen phosphide and absorb difficult
Topic.
Brief description of the drawings
Fig. 1 is the absorption plant structural representation of the present invention.
Reference is as follows shown in figure：
1- air inlet 2- gas pressurizeds room 3- gas absorption chambers
4- cathode electrode 5- anode electrodes
Embodiment
As shown in figure 1,
In a kind of absorption plant of phosphine gas, including telescopic reactor, telescopic reactor from the inside to the outside successively
For gas pressurized room 2, anode electrode 5, gas absorption chamber 3 and cathode electrode 4, anode electrode is set for multi-layered electrode, this implementation
Three layers are set in mode, gas pressurized room carries air inlet 1, and anode electrode and cathode electrode are connected by wire and concatenate electricity
Mixed liquor, the open top of copper sulphate and potassium chloride ions liquid are contained in source, gas absorption chamber.
Anode electrode is gas diffusion anode, and cathode electrode is gas diffusion cathode, gas diffusion anode electrode and gas
The thickness of dispenser cathode electrode is 0.5mm~2mm；Spacing between gas diffusion anode electrode and gas diffusion cathode electrode
For 5cm~50cm；The ratio of height to diameter of telescopic reactor is 3:1~10:1.
The embodiment carried out using absorption plant is as follows：
Embodiment 1
Electrochemistry absorber：Diameter 50cm, high 200cm, anode electrode is 1 according to activated carbon and carbon black:2 ratio system
Make, electrode spacing is 15cm, every layer of thickness of electrode is 0.5mm.(solvent is chlorine to the copper-bath that electrolyte is 0.05mol/L
Change potassium ion liquid).
Turn on the power, it is 100A/m to control cathode-current density2, open hydrogen phosphide tail gas force (forcing) pump.Hydrogen phosphide tail gas
(1000ppm) press-in gas pressurized room (1.0MPa) is spread through anode electrode afterwards, is dissolved in electrolysis hand cleanser, anti-with copper sulphate
Phosphate should be generated, while cathode electrode annex produces substantial amounts of hydrogen peroxide, hydrogen peroxide and phosphatization remaining in electrolysis absorbing liquid
Hydrogen reacts, and is produced without precipitation, and the hydrogen phosphide detector display reading of top is 0ppm.Phosphine waste gas passes through chemical absorbing
The hydrogen peroxide collective effect that agent and electrochemistry are produced realizes the complete removal of hydrogen phosphide.By the longtime running of 200 hours, tail gas
In still can't detect the presence of hydrogen phosphide, show that absorbing liquid is capable of the use of repetitive cycling, it is permanently effective.
Embodiment 2
Electrochemistry absorber：Diameter 50cm, high 250cm, anode electrode is 1 according to activated carbon and carbon black:4 ratio system
Make, electrode spacing is 10cm, every layer of thickness of electrode is 1mm,.(solvent is chlorination to the copper-bath that electrolyte is 0.1mol/L
Potassium ion liquid).
Turn on the power, it is 200A/m to control cathode-current density2, open hydrogen phosphide tail gas force (forcing) pump.Hydrogen phosphide tail gas
(2000ppm) press-in gas pressurized room (1.0MPa) is spread through anode electrode afterwards, is dissolved in electrolysis hand cleanser, anti-with copper sulphate
Phosphate should be generated, while cathode electrode annex produces substantial amounts of hydrogen peroxide, hydrogen peroxide and phosphatization remaining in electrolysis absorbing liquid
Hydrogen reacts, and is produced without precipitation, and the hydrogen phosphide detector display reading of top is 0ppm.Phosphine waste gas passes through chemical absorbing
The hydrogen peroxide collective effect that agent and electrochemistry are produced realizes the complete removal of hydrogen phosphide.By the longtime running of 400 hours, tail gas
In still can't detect the presence of hydrogen phosphide, show that absorbing liquid is capable of the use of repetitive cycling, it is permanently effective
The specific implementation case of patent of the present invention is the foregoing is only, but the technical characteristic of patent of the present invention is not limited to
This, any those skilled in the relevant art are in the field of the invention, and the change or modification made all are covered in the special of the present invention
Among sharp scope.
Claims (9)
1. a kind of method that electrochemistry assistant chemical absorbs phosphine gas, it is characterised in that comprise the following steps：
(1) hydrogen phosphide tail gas is pressed into gas pressurized room by the air pump that pressurizes, phosphine gas is passed through after gas diffusion anode
Into gas absorption chamber and incorporate in the mixed liquor of copper sulphate and ionic liquid, hydrogen phosphide and copper sulphate reaction generation phosphate and
Copper simple substance；
(2) air diffuses to cathode electrode surface by gas diffusion cathode, oxygen components under the effect of negative electrode negative potential with sun
The proton of pole transmission, which is combined, is reduced into hydrogen peroxide, and further oxidation retention is dissolved in the remaining phosphine gas in electrolyte, realizes
Hydrogen phosphide fully absorbs degraded；Copper simple substance regenerates copper sulphate in the presence of hydrogen peroxide and sulfuric acid simultaneously, and phosphorus is participated in again
Change the absorption of hydrogen.
2. method according to claim 1, it is characterised in that the air pressure of compression pump is 0.5MPa-1.5MPa.
3. method according to claim 1, it is characterised in that in the mixed liquor, concentration of copper sulfate is 0.05mol/L-
0.15mol/L。
4. method according to claim 1, it is characterised in that the ionic liquid is potassium chloride ions liquid.
5. method according to claim 1, it is characterised in that the current density for controlling gas diffusion cathode is 100A/m2-
300A/m2。
6. a kind of electrochemistry assistant chemical absorbs the device of phosphine gas, it is characterised in that described including telescopic reactor
Gas pressurized room, gas diffusion anode electrode, gas absorption chamber and gas diffusion are followed successively by telescopic reactor from the inside to the outside
Cathode electrode；The gas pressurized room carries air inlet；Between the gas diffusion anode electrode and gas diffusion cathode electrode
Connected by wire and concatenate power supply.
7. device according to claim 6, it is characterised in that the gas diffusion anode electrode and gas diffusion cathode electrode
Thickness be 0.5mm~2mm.
8. device according to claim 6, it is characterised in that the gas diffusion anode electrode and gas diffusion cathode electrode
Between spacing be 5cm~50cm.
9. device according to claim 6, it is characterised in that the ratio of height to diameter of the telescopic reactor is 3:1~10:1.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710575810.3A CN107224863B (en) | 2017-07-14 | 2017-07-14 | Method and device for electrochemically assisting chemical absorption of phosphine gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710575810.3A CN107224863B (en) | 2017-07-14 | 2017-07-14 | Method and device for electrochemically assisting chemical absorption of phosphine gas |
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| CN107224863A true CN107224863A (en) | 2017-10-03 |
| CN107224863B CN107224863B (en) | 2023-03-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112844006A (en) * | 2020-12-28 | 2021-05-28 | 马边长和电力有限责任公司 | Yellow phosphorus tail gas purification method |
| CN115738658A (en) * | 2022-11-27 | 2023-03-07 | 昆明理工大学 | Method and device for purifying malodorous gas containing phosphorus and sulfur |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1399214A (en) * | 1971-09-10 | 1975-06-25 | Wright H D | Gas purification |
| JPH01266836A (en) * | 1988-04-19 | 1989-10-24 | Kyowa Kako Kk | Method for removing arsine and/or phosphine |
| CA2786682A1 (en) * | 2010-01-14 | 2011-07-21 | Ferenc Meszaros | Method for reduction of the co2 content of flue and atmospheric gases, and equipments for application of the method |
| CN103551031A (en) * | 2013-10-31 | 2014-02-05 | 昆明理工大学 | Method and device for purifying phosphorus, sulfur and cyanogen under synergetic action of electrochemical oxidation and liquid phase catalytic oxidation |
| CN106731542A (en) * | 2016-12-26 | 2017-05-31 | 浙江工商大学 | The apparatus for electrochemical treatment and method of a kind of phosphine gas |
| US20170158508A1 (en) * | 2014-06-25 | 2017-06-08 | New Sky Energy Intellectual Property Holding Company, Llc | Method to prepare one or more chemical products using hydrogen sulfide |
| CN207187477U (en) * | 2017-07-14 | 2018-04-06 | 浙江工商大学 | A kind of electrochemistry assistant chemical absorbs the device of phosphine gas |
-
2017
- 2017-07-14 CN CN201710575810.3A patent/CN107224863B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1399214A (en) * | 1971-09-10 | 1975-06-25 | Wright H D | Gas purification |
| JPH01266836A (en) * | 1988-04-19 | 1989-10-24 | Kyowa Kako Kk | Method for removing arsine and/or phosphine |
| CA2786682A1 (en) * | 2010-01-14 | 2011-07-21 | Ferenc Meszaros | Method for reduction of the co2 content of flue and atmospheric gases, and equipments for application of the method |
| CN103551031A (en) * | 2013-10-31 | 2014-02-05 | 昆明理工大学 | Method and device for purifying phosphorus, sulfur and cyanogen under synergetic action of electrochemical oxidation and liquid phase catalytic oxidation |
| US20170158508A1 (en) * | 2014-06-25 | 2017-06-08 | New Sky Energy Intellectual Property Holding Company, Llc | Method to prepare one or more chemical products using hydrogen sulfide |
| CN106731542A (en) * | 2016-12-26 | 2017-05-31 | 浙江工商大学 | The apparatus for electrochemical treatment and method of a kind of phosphine gas |
| CN207187477U (en) * | 2017-07-14 | 2018-04-06 | 浙江工商大学 | A kind of electrochemistry assistant chemical absorbs the device of phosphine gas |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112844006A (en) * | 2020-12-28 | 2021-05-28 | 马边长和电力有限责任公司 | Yellow phosphorus tail gas purification method |
| CN115738658A (en) * | 2022-11-27 | 2023-03-07 | 昆明理工大学 | Method and device for purifying malodorous gas containing phosphorus and sulfur |
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| Publication number | Publication date |
|---|---|
| CN107224863B (en) | 2023-03-10 |
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