CN103801175A - Polyoxometallate, preparation and application thereof - Google Patents
Polyoxometallate, preparation and application thereof Download PDFInfo
- Publication number
- CN103801175A CN103801175A CN201210455613.5A CN201210455613A CN103801175A CN 103801175 A CN103801175 A CN 103801175A CN 201210455613 A CN201210455613 A CN 201210455613A CN 103801175 A CN103801175 A CN 103801175A
- Authority
- CN
- China
- Prior art keywords
- hydrogen sulfide
- distilled water
- polyoxometallate
- dissolved
- gas
- 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
- 238000002360 preparation method Methods 0.000 title claims abstract description 7
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims abstract description 66
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims abstract description 62
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000012153 distilled water Substances 0.000 claims abstract description 22
- 238000003756 stirring Methods 0.000 claims abstract description 8
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000843 powder Substances 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 61
- 229910052739 hydrogen Inorganic materials 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 239000003595 mist Substances 0.000 claims description 7
- 229910052693 Europium Inorganic materials 0.000 claims description 2
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 2
- 238000010189 synthetic method Methods 0.000 claims 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 11
- 239000000243 solution Substances 0.000 abstract description 8
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 2
- 239000011259 mixed solution Substances 0.000 abstract 2
- 230000002378 acidificating effect Effects 0.000 abstract 1
- 238000007605 air drying Methods 0.000 abstract 1
- 238000001914 filtration Methods 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Inorganic materials O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 abstract 1
- 238000005406 washing Methods 0.000 abstract 1
- 238000006477 desulfuration reaction Methods 0.000 description 18
- 230000023556 desulfurization Effects 0.000 description 15
- 238000000034 method Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 7
- 230000035484 reaction time Effects 0.000 description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 6
- 230000008676 import Effects 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 238000004088 simulation Methods 0.000 description 6
- 239000003570 air Substances 0.000 description 5
- 239000007800 oxidant agent Substances 0.000 description 5
- 229910052717 sulfur Inorganic materials 0.000 description 5
- 239000011593 sulfur Substances 0.000 description 5
- 230000007613 environmental effect Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 239000003345 natural gas Substances 0.000 description 3
- 238000006479 redox reaction Methods 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 238000009938 salting Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000007809 chemical reaction catalyst Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention relates to polyoxometallate and preparation and application thereof; mixing 0.5-2.0g of MoO3Or GdO3Dissolving in 10-20ml distilled water; adding a solution prepared by dissolving 1.0-2.0g of KOH in 1000ml of 500-fold distilled water into the solution, and dropwise adding HClO4Maintaining the mixture acidic at pH = 4.0-5.0; taking 1.0-2.0gEu (NO)3)3·6H2Dissolving O in 10-20ml of distilled water, and slowly adding into the mixed solution at room temperature under stirring; simultaneously, HClO is added into the mixed solution dropwise4Maintaining pH = 2.0-4.0; stirring at room temperature for 24-72h, filtering, washing with water, and air drying at room temperature for 12-48h to obtain water-insoluble yellow powder; the desulfurizer has high oxidation performance, good stability, no pollution to pipelines and environment, high hydrogen sulfide removal efficiency and capability of obtaining elemental sulfur.
Description
Technical field:
The present invention relates to a kind of polyoxometallate and preparation thereof and application.
Background technology:
Hydrogen sulfide is the gas that a kind of height stimulates, and has strong rotten egg smell, and in gas, the existence of hydrogen sulfide not only can cause equipment and corrosion of piping, catalyst poisoning, and can serious threat personal safety.To concentration of hydrogen sulfide in ambient air, workshop air and industrial waste gas, there are strict requirements in China: in the ambient air of residential block, the maximum concentration of hydrogen sulfide must not exceed 0.01mg/m
3; Shopwork place Air Hydrogen Sulfide maximum concentration must not exceed 10mg/m
3; In town gas, concentration of hydrogen sulfide must not exceed 20mg/m
3; In oil product refinery waste gas, concentration of hydrogen sulfide requires to purify to 10-20mg/m
3.
For removing of hydrogen sulfide, reported processing method is a lot, and these methods are mainly divided into two large classes: dry-desulphurizer sulfur removal technology and wet desulphurization agent sulfur removal technology.Dry-desulphurizer sulfur removal technology because its technique is simple, easy operating, desulfurization precision be higher, energy consumption is low and be widely used relatively.Conventional dry-desulphurizer mainly contains: iron oxide, zinc oxide, common active carbon etc.This technique is generally usually used in the removal of hydrogen sulfide in industrial tail gas or other meticulous desulfurization, the desulfurizing agent great majority that adopt can not be regenerated or regeneration technology complexity, the removing of a large amount of hydrogen sulfide gas in improper natural gas, and cannot reclaim or recycle sulphur and form the wasting of resources.Wet desulphurization agent sulfur removal technology, generally adopts absorption liquid absorbing hydrogen sulphide, under catalyst action, Oxidation of Hydrogen Sulfide is become to sulphur, and catalyst continues to use after can regenerating in air or oxygen.This technological reaction catalyst system and catalyzing is liquid-phase system, and efficient, renewable, has advantages of hydrogen sulfide is converted into elemental sulfur simultaneously.
At present, wet desulphurization agent sulfur removal technology also has problems at aspects such as stability of solution, control side reaction and the oxidant feature of environmental protection.Developing the relatively simple and high oxidant of environmental protection desulfuration efficiency of a kind of good stability, composition becomes the research emphasis of this technique.
Summary of the invention:
The object of this invention is to provide a kind of polyoxometallate as wet desulphurization agent deep removal hydrogen sulfide, its good stability and desulfuration efficiency are high.
Polyoxometallate of the present invention, structural formula: [H
24r
2mo
8o
39] nH
2o (R=Eu, Gd).
The preparation method of above-mentioned polyoxometallate, comprises the following steps:
By 0.5-2.0gMoO
3be dissolved in 10-20ml distilled water; 1.0-2.0gKOH is dissolved in to the solution that 500-1000ml distilled water is configured to and adds in above-mentioned solution, and drip HClO
4make mixed liquor acidity remain on pH=4.0-5.0; Get 1.0-2.0gEu (NO
3)
36H
2o or Gd (NO
3)
36H
2o is dissolved in 10-20ml distilled water, under room temperature, stirring, slowly adds in aforementioned mixed liquor; Meanwhile, in mixed liquor, drip HClO
4keep pH=2.0-4.0; At ambient temperature, keep stirring 24-72h, filter, wash, air at room temperature is dried 12-48h, obtains water-fast yellow powder.
Utilize polyoxometallate as wet desulphurization agent, be dissolved in distilled water, under uniform temperature and condition of normal pressure, the mist that contains hydrogen sulfide is passed into above-mentioned solution, reach the object that removes hydrogen sulfide;
By polyoxometallate 0.001-0.010g, be dissolved in 25-150ml distilled water;
Reaction temperature 15-50 ℃;
Mist forms by 1%H
2s Standard Gases flow is 10-100ml/min and O
2gas flow 10-100ml/min, mist entrance flow velocity 20-150ml/min.
The chemical transmitter course of reaction of this polyoxometallate absorbing hydrogen sulphide, comprises following five steps:
(1) polyoxometallate is prepared into the aqueous solution;
(2) hydrogen sulfide containing gas is passed into the above-mentioned aqueous solution, make hydrogen sulfide from gas phase main diffusion to gas-liquid interface;
(3) dissolve and be dissociated into HS at interface hydrogen sulfide
-, spread to liquid phase by interface simultaneously;
(4) HS
-, excessive H
2s and polyoxometallate generation redox reaction, generate elemental sulfur;
(5) along with the carrying out of redox reaction, dissociation equilibrium is destroyed, more H
2s spreads to liquid phase, participates in redox reaction, thereby has realized the object that removes hydrogen sulfide in gas phase.
Related H 2 S-containing gas, comprises natural gas, industrial tail gas and industrial waste gas etc.
The method of a kind of deep removal hydrogen sulfide the present invention relates to, take the prepared polyoxometallate of the present invention as oxidant, configure certain density polyoxometallic acid salting liquid and be placed in desulfurization reactor, at 15 ℃-50 ℃, pass into the hydrogen sulfide containing mist of 20-150ml/min from reactor lower end, gas form with minute bubbles after the sand core funnel of reactor lower end distributes is passed through polyoxometallic acid salting liquid, divide from reactor upper end and get tail gas and enter hydrogen sulfide analyzer and detect, detect once every 10min.Preparation method is simple for this method desulfurizer therefor, high and the good stability of oxidation susceptibility, environmental protection does not all produce pollution to pipeline and environment, whole process depriving hydrogen sulphide efficiency is high, and can obtain elemental sulfur, there is certain economic benefit, the simple small investment of process equipment, be easy to industrialization promotion, meet national cleaner production and circular economy industrial policy.
The invention has the beneficial effects as follows: the present invention has prepared polyoxometallate, compared with other oxidants, desulfuration efficiency improves, reaction time shortens, process costs obviously reduces, and overcome the perishable pipeline of existing oxidant and formed secondary pollution problems, a kind of hydrogen sulfide stripping method of efficient, environmental protection is provided, can realize the double goal of hydrogen sulfide content and cleaner production in gases such as reducing natural gas.
The specific embodiment:
Embodiment 1: wet desulphurization agent synthetic
By 1.93gMoO
3be dissolved in 10ml distilled water.1.5gKOH is dissolved in to the solution that 1000ml distilled water is configured to and adds in above-mentioned solution, and drip HClO
4make mixed liquor acidity remain on pH=4.5.Get 1.49g Eu (NO
3)
36H
2o is dissolved in 20ml distilled water, under room temperature, stirring, slowly adds in aforementioned mixed liquor.Meanwhile, in mixed liquor, drip HClO
4keep pH=3.0.At ambient temperature, keep stirring 48h, filter, wash, air at room temperature is dried 48h, obtains the i.e. [H of water-fast yellow powder
24eu
2mo
8o
39] 6H
2o.
Embodiment 2: simulation H 2 S-containing gas
By 0.005g H
24eu
2mo
8o
39being dissolved in 50ml distilled water pours in hydrogen sulfide desulfurization reactor.Set 50 ℃ of reaction temperatures, set 1%H
2s Standard Gases flow is 30ml/min and O
2gas flow 50ml/min imports hydrogen sulfide desulfurization reactor from bottom after gas is stable, and after reactor, in tail gas, hydrogen sulfide hydrogen content adopts hydrogen sulfide detector to detect.Experimental result shows, the reaction time, in tail gas, hydrogen sulfide content was 0 in 2.5h.After 2.5h, in tail gas, hydrogen sulfide content increases gradually.
Embodiment 3: simulation H 2 S-containing gas
By 0.002g H
24gd
2mo
8o
39being dissolved in 25ml distilled water pours in hydrogen sulfide desulfurization reactor.Set 35 ℃ of reaction temperatures, set 1%H
2s Standard Gases flow is 10ml/min and O
2gas flow 70ml/min imports hydrogen sulfide desulfurization reactor from bottom after gas is stable, and after reactor, in tail gas, hydrogen sulfide hydrogen content adopts hydrogen sulfide detector to detect.Experimental result shows, the reaction time, in tail gas, hydrogen sulfide content was 0 in 8.5h.After 8.5h, in tail gas, hydrogen sulfide content increases gradually.
Embodiment 4: simulation H 2 S-containing gas
By 0.010g H
24eu
2mo
8o
39being dissolved in 70ml distilled water pours in hydrogen sulfide desulfurization reactor.Set 15 ℃ of reaction temperatures, set 1%H
2s Standard Gases flow is 80ml/min and O
2gas flow 10ml/min imports hydrogen sulfide desulfurization reactor from bottom after gas is stable, and after reactor, in tail gas, hydrogen sulfide hydrogen content adopts hydrogen sulfide detector to detect.Experimental result shows, the reaction time, in tail gas, hydrogen sulfide content was 0 in 3h.After 3h, in tail gas, hydrogen sulfide content increases gradually.
Embodiment 5: simulation H 2 S-containing gas
By 0.001g H
24gd
2mo
8o
39being dissolved in 150ml distilled water pours in hydrogen sulfide desulfurization reactor.Set 45 ℃ of reaction temperatures, set 1%H
2s Standard Gases flow is 10ml/min and O
2gas flow 10ml/min imports hydrogen sulfide desulfurization reactor from bottom after gas is stable, and after reactor, in tail gas, hydrogen sulfide hydrogen content adopts hydrogen sulfide detector to detect.Experimental result shows, the reaction time, in tail gas, hydrogen sulfide content was 0 in 4h.After 4h, in tail gas, hydrogen sulfide content increases gradually.
Embodiment 6: simulation H 2 S-containing gas
By 0.025g H
24gd
2mo
8o
39being dissolved in 80ml distilled water pours in hydrogen sulfide desulfurization reactor.Set 20 ℃ of reaction temperatures, set 1%H
2s Standard Gases flow is 50ml/min and O
2gas flow 100ml/min imports hydrogen sulfide desulfurization reactor from bottom after gas is stable, and after reactor, in tail gas, hydrogen sulfide hydrogen content adopts hydrogen sulfide detector to detect.Experimental result shows, the reaction time, in tail gas, hydrogen sulfide content was 0 in 3h.After 3h, in tail gas, hydrogen sulfide content increases gradually.
Embodiment 7: simulation H 2 S-containing gas
By 0.015g H
24eu
2mo
8o
39being dissolved in 100ml distilled water pours in hydrogen sulfide desulfurization reactor.Set 25 ℃ of reaction temperatures, set 1%H
2s Standard Gases flow is 100ml/min and O
2gas flow 40ml/min imports hydrogen sulfide desulfurization reactor from bottom after gas is stable, and after reactor, in tail gas, hydrogen sulfide hydrogen content adopts hydrogen sulfide detector to detect.Experimental result shows, the reaction time, in tail gas, hydrogen sulfide content was 0 in 3h.After 3h, in tail gas, hydrogen sulfide content increases gradually.
Claims (3)
1. a polyoxometallate, is characterized in that: its general structure is [H
24r
2mo
8o
39] nH
2o; R=Eu or Gd.
2. a preparation method for polyoxometallate claimed in claim 1, is characterized in that: its synthetic method: by 0.5-2.0gMoO
3be dissolved in 10-20ml distilled water; 1.0-2.0gKOH is dissolved in to the solution that 500-1000ml distilled water is configured to and adds in above-mentioned solution, and drip HClO
4make mixed liquor acidity remain on pH=4.0-5.0; Get 1.0-2.0gEu (NO
3)
36H
2o or Gd (NO
3)
36H
2o is dissolved in 10-20ml distilled water, under room temperature, stirring, slowly adds in aforementioned mixed liquor; Meanwhile, in mixed liquor, drip HClO
4keep pH=2.0-4.0; At ambient temperature, keep stirring 24-72h, filter, wash, air at room temperature is dried 12-48h, obtains water-fast yellow powder.
3. an application for polyoxometallate according to claim 1, is characterized in that:
Utilize polyoxometallate as wet desulphurization agent, be dissolved in distilled water, under uniform temperature and condition of normal pressure, the mist that contains hydrogen sulfide is passed into above-mentioned solution, reach the object that removes hydrogen sulfide;
By polyoxometallate 0.001-0.010g, be dissolved in 25-150ml distilled water;
Reaction temperature 15-50 ℃;
Mist forms by 1%H
2s Standard Gases flow is 10-100ml/min and O
2gas flow 10-100ml/min, mist entrance flow velocity 20-150ml/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210455613.5A CN103801175B (en) | 2012-11-14 | 2012-11-14 | Polyoxometallate, preparation and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210455613.5A CN103801175B (en) | 2012-11-14 | 2012-11-14 | Polyoxometallate, preparation and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103801175A true CN103801175A (en) | 2014-05-21 |
| CN103801175B CN103801175B (en) | 2015-11-18 |
Family
ID=50698853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210455613.5A Active CN103801175B (en) | 2012-11-14 | 2012-11-14 | Polyoxometallate, preparation and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103801175B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105688658A (en) * | 2016-01-22 | 2016-06-22 | 山东大学 | Aqueous solution of polyoxometallate or monomer thereof for removing hydrogen sulfide |
| CN106582278A (en) * | 2016-12-29 | 2017-04-26 | 山东大学 | Method for preparing heteropoly acid-modified nanoring composite material used for NOx removal |
| CN106669420A (en) * | 2017-02-17 | 2017-05-17 | 山东大学 | Electrochemical regeneration method of polyoxometallate water solution after desulfuration |
| CN107265722A (en) * | 2017-08-08 | 2017-10-20 | 哈尔滨工业大学 | A kind of method that utilization polyacid ionic liquid realizes Containing Sulfur sodium waste water desulfurization |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4283379A (en) * | 1979-06-20 | 1981-08-11 | Union Oil Company Of California | Method for removing hydrogen sulfide from gas streams |
| CN101918324A (en) * | 2007-10-31 | 2010-12-15 | 莫利康普矿物有限责任公司 | Aggregate composition for treating a contaminanted fluid |
-
2012
- 2012-11-14 CN CN201210455613.5A patent/CN103801175B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4283379A (en) * | 1979-06-20 | 1981-08-11 | Union Oil Company Of California | Method for removing hydrogen sulfide from gas streams |
| CN101918324A (en) * | 2007-10-31 | 2010-12-15 | 莫利康普矿物有限责任公司 | Aggregate composition for treating a contaminanted fluid |
Non-Patent Citations (1)
| Title |
|---|
| CHUAN-DE WU, ET AL.: "Hydrothermal Assembly of a Novel Three-Dimensional Framework Formed by[GdMo12O42]9- Anions and Nine Coordinated GdIII Cations", 《JOURNAL OF THE AMERICAN CHEMICAL》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105688658A (en) * | 2016-01-22 | 2016-06-22 | 山东大学 | Aqueous solution of polyoxometallate or monomer thereof for removing hydrogen sulfide |
| CN106582278A (en) * | 2016-12-29 | 2017-04-26 | 山东大学 | Method for preparing heteropoly acid-modified nanoring composite material used for NOx removal |
| CN106582278B (en) * | 2016-12-29 | 2022-10-11 | 山东大学 | Preparation method of heteropoly acid modified nano-ring composite material for removing NOx |
| CN106669420A (en) * | 2017-02-17 | 2017-05-17 | 山东大学 | Electrochemical regeneration method of polyoxometallate water solution after desulfuration |
| CN107265722A (en) * | 2017-08-08 | 2017-10-20 | 哈尔滨工业大学 | A kind of method that utilization polyacid ionic liquid realizes Containing Sulfur sodium waste water desulfurization |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103801175B (en) | 2015-11-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102151476B (en) | Method for removing hydrogen sulfide in gas phase through oxidization under high gravity field | |
| CN103846003B (en) | Method for removing hydrogen sulfide gas | |
| CN104117275B (en) | The method of one-step method process sulfide hydrogen and ammonia gaseous mixture | |
| CN103203242B (en) | Catalytic system and process for desulfuration of industrial sulfur-bearing waste gas | |
| CN101352653B (en) | Low-temperature micro-oxygen purification method for removing harmful gas in yellow phosphorus tail gas | |
| CN103768916A (en) | Oxidative desulphurization and brimstone recycling method | |
| JP2016515936A (en) | Absorption medium, method for producing absorption medium, and method and apparatus for separating hydrogen sulfide from acid gas | |
| CN104209084A (en) | Claus tail gas SO2Adsorbent, preparation and application thereof | |
| CN103801175B (en) | Polyoxometallate, preparation and application thereof | |
| CN101264413A (en) | Total sulfides removing solvent and preparation thereof | |
| CN103920388B (en) | A kind of Compound type desulfurization grout containing complexing agent and preparation method thereof | |
| CN105363330A (en) | Sulfuric acid tail gas desulphurization device | |
| CN104119947B (en) | A kind of catalytic cracking flue gas desulfurization and aftertreatment technology | |
| CN104119946A (en) | Catalytic cracking flue gas desulfurization and acid gas treatment process | |
| CN103894058B (en) | Method for removing hydrogen sulfide gas by using polyoxometallate | |
| CN106310931A (en) | Method for simultaneously removing hydrogen sulfide and ammonia gas by using iron-based ionic liquid | |
| CN111592474A (en) | Preparation method of complex iron catalyst for wet desulphurization | |
| CN204159201U (en) | Sulfuric acid tail gas desulfurizer | |
| CN101574607B (en) | Adsorbent for selectively removing low-concentration sulfur dioxide from gas containing carbon dioxide | |
| CN205109370U (en) | Kiln is volatilized including sulphur tail gas desulfurization device to gyration | |
| CN103301718B (en) | The device of a kind of recovery, concentrated sulfur dioxide in tail gas | |
| CN103752135B (en) | A kind of purification method of carbon black plant tail gas | |
| CN103768913B (en) | A kind of method removing hydrogen sulfide and mercaptan in gas | |
| CN103949213B (en) | A kind of absorbent charcoal based adsorbent composition for reclaiming sulfur dioxide and nitrogen in roasting pyrite furnace gas | |
| CN104548906B (en) | Purification method for hydrogen sulfide containing gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |