CN107789960A - Iron chloride removes hydrogen sulfide technology - Google Patents
Iron chloride removes hydrogen sulfide technology Download PDFInfo
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- CN107789960A CN107789960A CN201610843308.1A CN201610843308A CN107789960A CN 107789960 A CN107789960 A CN 107789960A CN 201610843308 A CN201610843308 A CN 201610843308A CN 107789960 A CN107789960 A CN 107789960A
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- Prior art keywords
- hydrogen sulfide
- aqueous solution
- chloride
- iron chloride
- technology
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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
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/52—Hydrogen sulfide
-
- 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
- B01D53/79—Injecting reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/108—Halogens or halogen compounds
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Gas Separation By Absorption (AREA)
- Treating Waste Gases (AREA)
Abstract
Iron chloride removing hydrogen sulfide technology of the present invention belongs to selexol process technical field.Iron chloride removing hydrogen sulfide technology of the present invention is characterized in：Generate elemental sulfur and frerrous chloride, hydrochloride aqueous solution after the reaction of ferric chloride in aqueous solution and hydrogen sulfide, the aqueous solution air oxidation is into ferric chloride in aqueous solution.The ORP value for controlling desulfurization unit is 640 600mv, and the ORP value for controlling oxidation unit is 770 800mv, and the concentration of ferric chloride in aqueous solution is 1.5 4mol/L.Iron chloride of the present invention removing hydrogen sulfide technology has that depriving hydrogen sulphide is thorough, simple operation, the features such as equipment is simple, desulfurizing agent is stable, can be widely used for natural gas removing hydrogen sulfide.
Description
First, technical field
Iron chloride removing hydrogen sulfide technology of the present invention belongs to selexol process technical field.
2nd, background technology
Originate from the gas of gas well, oil field, page oil rock and coalfield using methane as main component and be commonly referred to as natural gas.The sulphur included
Change hydrogen and can cause to store, convey, many serious problems in application process and environmental pollution.The open skill of existing removing hydrogen sulfide
Art has indirect method and continuity method, no matter indirect method uses sponge iron, activated ferric oxide, zinc oxide zinc acetate slurry or molecular sieve
Deng solid desulphurizing agents, because gas-solid contact interface is small, removal efficiency and sulphur analysis are all barely satisfactory, and regeneration is difficult.There is a kind of interval
Method has nitrogen oxides generation using natrium nitrosum desulfurization.There are absorption process and direct oxidation method in continuity method, no matter changing in absorption process
Absorption process, Physical Absorption method or Chemical Physics blended absorbent method are learned, because absorption is reversible, it is therefore necessary to which cryogenic high pressure is inhaled
Receive, high-temperature low-pressure desorption, due to absorb be it is reversible, realization thoroughly absorb it is difficult, can only make thick desulfurization just economy.Directly
It by direct oxidation of hydrogen sulfide is elemental sulfur that oxidizing process, which is, and reaction is irreversible, desulfurization more thoroughly, but such as Deutsche Bundespatent method our company
Crouse (Claus) method the operation of reacting furnace system high-temperature strong acid, substantial amounts of sulfureted hydrogen burning heat needs secondary use, it is clear that to structure
Stove material has many rigors；Anthraquinone (Stretford) method desulfurizing agent component such as company of BP Centrica is more,
Order generation acid-base reaction, oxidation reaction, reduction reaction, oxidation reaction, course are longer, and side reaction is more, causes accessory substance more；Such as
Special (LOCAT) method of the Rocca of air resources technology company of the United States Patent (USP) U.S., there is desulfurizing agent chelated iron in the elemental sulfur of abjection
Catabolite, the chelating intensity of chelate are more apparent by the influence factor (such as pH value, acid concentration) of media variations.Therefore this method
The scope of application is the deep desulfuration processing after absorption process is handled.
3rd, the content of the invention
To solve deficiency existing for existing depriving hydrogen sulphide technology, iron chloride removing hydrogen sulfide technology of the present invention is intended to offer one
Kind desulphurization reaction is irreversible, desulfurizing agent is stable, controls convenient, the simple desulfurization technology of equipment.
The principle of iron chloride of the present invention removing hydrogen sulfide technology is：Iron chloride can be by Oxidation of Hydrogen Sulfide into elemental sulfur, but nothing
Method is further oxidized to sulfur dioxide, and this is that the oxidation-reduction potential (ORP value) of iron chloride is determined.Hydrogen sulfide is by chlorine
While change iron is oxidized to elemental sulfur, iron chloride is reduced into frerrous chloride and hydrogen chloride, and this process is irreversible.Chlorination
Ferrous and hydrogen chloride by air oxidation into iron chloride, this course of reaction be also irreversible.Every irreversible chemical reaction
Possibility is just provided by thorough reaction for one of reactant.
Iron chloride removing hydrogen sulfide technology of the present invention is characterized in：Ferric chloride in aqueous solution after hydrogen sulfide reaction with generating simple substance
Sulphur and frerrous chloride, hydrochloride aqueous solution.The aqueous solution air oxidation is into ferric chloride in aqueous solution.Control the ORP of desulfurization unit
It is worth for 640-600mv, the ORP value for controlling oxidation unit is 770-800mv, and the concentration of ferric chloride in aqueous solution is 1.5-4mol/L.
Iron chloride removing hydrogen sulfide technology of the present invention is implemented：Natural gas and 1.5-4mol/L containing hydrogen sulfide
The ferric chloride in aqueous solution of concentration reacts into desulfurization unit, using the ORP value of desulfurization unit as 640-600mv norm controlling Containing Sulfurs
The inlet amount of the natural gas of hydrogen, the natural gas after desulfurization depart from vulcanization unit, react elemental sulfur and frerrous chloride, the chlorination of generation
Aqueous solution of hydrogen separates elemental sulfur from desulfurization unit into solid-liquid separation unit, and liquid phase enters oxidation unit and air reaction, with oxygen
The ORP value for changing unit is passed through air capacity for 770-800mv norm controllings.Liquid phase after the completion of oxidation enters for ferric chloride in aqueous solution
Next removing hydrogen sulfide circulation.
Iron chloride removing hydrogen sulfide technology of the present invention carries out removing hydrogen sulfide using the natural gas of different sulfide hydrogen concentration
Implementation, data see the table below：
Iron chloride of the present invention removing hydrogen sulfide technology has that depriving hydrogen sulphide is thorough, and simple operation, equipment is simple, desulfurizing agent is steady
The features such as determining, it can be widely used for natural gas removing hydrogen sulfide.
Claims (3)
1. iron chloride removing hydrogen sulfide technology is characterized in：Ferric chloride in aqueous solution after hydrogen sulfide reaction with generating elemental sulfur and chlorination
Ferrous, hydrochloride aqueous solution, the aqueous solution air oxidation is into ferric chloride in aqueous solution.
2. according to right 1, the ORP value for controlling desulfurization unit is 640-600mv, and the ORP value for controlling oxidation unit is 770-
800mv。
3. according to right 1, the concentration of ferric chloride in aqueous solution is 1.5-4mol/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610843308.1A CN107789960A (en) | 2016-09-02 | 2016-09-02 | Iron chloride removes hydrogen sulfide technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610843308.1A CN107789960A (en) | 2016-09-02 | 2016-09-02 | Iron chloride removes hydrogen sulfide technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107789960A true CN107789960A (en) | 2018-03-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610843308.1A Pending CN107789960A (en) | 2016-09-02 | 2016-09-02 | Iron chloride removes hydrogen sulfide technology |
Country Status (1)
| Country | Link |
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| CN (1) | CN107789960A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62216905A (en) * | 1986-03-18 | 1987-09-24 | Idemitsu Kosan Co Ltd | Treatment of hydrogen sulfide |
| JPS62226805A (en) * | 1986-03-29 | 1987-10-05 | Agency Of Ind Science & Technol | Treatment of hydrogen sulfide |
| CN1110475A (en) * | 1993-05-07 | 1995-10-18 | 埃勒夫阿托化学有限公司 | Process for the preparation of ferric chloride |
| CN101327396A (en) * | 2008-07-31 | 2008-12-24 | 深圳市龙澄高科技环保有限公司 | Method and device for removing hydrogen sulfide from gas containing hydrogen sulfide and recovering sulfer using catalytic oxidation |
| CN102020248A (en) * | 2009-09-16 | 2011-04-20 | 北京化工大学 | Method for non-aqueous phase wet oxidation of hydrogen sulfide |
| CN102285746A (en) * | 2011-06-09 | 2011-12-21 | 深圳市市政设计研究院有限公司 | Method for controlling odor of polluted bottom sediment |
| CN102921277A (en) * | 2012-10-23 | 2013-02-13 | 中国石油化工股份有限公司 | Hydrogen sulfide tail gas treatment system and method |
| CN103865602A (en) * | 2014-03-25 | 2014-06-18 | 胡明成 | Wet-process ferric salt membrane-electrolysis regenerated biogas desulfurization method and device thereof |
| CN105561758A (en) * | 2014-10-14 | 2016-05-11 | 中国石油化工股份有限公司 | High efficiency wet method for removal of hydrogen sulfide from iron-based ionic liquid |
-
2016
- 2016-09-02 CN CN201610843308.1A patent/CN107789960A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62216905A (en) * | 1986-03-18 | 1987-09-24 | Idemitsu Kosan Co Ltd | Treatment of hydrogen sulfide |
| JPS62226805A (en) * | 1986-03-29 | 1987-10-05 | Agency Of Ind Science & Technol | Treatment of hydrogen sulfide |
| CN1110475A (en) * | 1993-05-07 | 1995-10-18 | 埃勒夫阿托化学有限公司 | Process for the preparation of ferric chloride |
| CN101327396A (en) * | 2008-07-31 | 2008-12-24 | 深圳市龙澄高科技环保有限公司 | Method and device for removing hydrogen sulfide from gas containing hydrogen sulfide and recovering sulfer using catalytic oxidation |
| CN102020248A (en) * | 2009-09-16 | 2011-04-20 | 北京化工大学 | Method for non-aqueous phase wet oxidation of hydrogen sulfide |
| CN102285746A (en) * | 2011-06-09 | 2011-12-21 | 深圳市市政设计研究院有限公司 | Method for controlling odor of polluted bottom sediment |
| CN102921277A (en) * | 2012-10-23 | 2013-02-13 | 中国石油化工股份有限公司 | Hydrogen sulfide tail gas treatment system and method |
| CN103865602A (en) * | 2014-03-25 | 2014-06-18 | 胡明成 | Wet-process ferric salt membrane-electrolysis regenerated biogas desulfurization method and device thereof |
| CN105561758A (en) * | 2014-10-14 | 2016-05-11 | 中国石油化工股份有限公司 | High efficiency wet method for removal of hydrogen sulfide from iron-based ionic liquid |
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Application publication date: 20180313 |