CN101264411A - Desulfurization solvent - Google Patents
Desulfurization solvent Download PDFInfo
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- CN101264411A CN101264411A CNA2008100240264A CN200810024026A CN101264411A CN 101264411 A CN101264411 A CN 101264411A CN A2008100240264 A CNA2008100240264 A CN A2008100240264A CN 200810024026 A CN200810024026 A CN 200810024026A CN 101264411 A CN101264411 A CN 101264411A
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- desulfurization solvent
- desulfurization
- defoamer
- antioxidant
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Abstract
The invention relates to a normal temperature high efficiency hydrogen sulfide remover and preparation method, in particular to a complex formulation type high efficiency desulphurization solvent and preparation method, which comprises n-methyldiethanolamine, defoamer, corrosion inhibitor, antioxidant, and strengthening agent; wherein, the content of the n-methyldiethanolamine is 93.5 to 96wt% in the desulphurization solvent; the preparation method of the desulfurizing agent is that 93.5 to 96 portion (the portion below is mass portion) of n-methyldiethanolamine, 0.05 to 0.2 portion of defoamer, 0.02 to 0.05 portion of corrosion inhibitor, 0.05 to 0.2 portion of antioxidant and 3 to 6 portion of strengthening agent are stirred in the stirred tank, and the even solution is acquired, which is desulphurization solvent. The normal temperature high efficiency hydrogen sulfide remover has an advantage of resolving the prior MDEA desulphurization solvent drawback of inferior performance of desulfurization caused by reaction with CO2.
Description
Technical field
The present invention relates to normal temperature high efficient remover of a kind of hydrogen sulfide and preparation method thereof, especially a kind of Compositional type high-efficiency desulfurization solvent and preparation method thereof.
Background technology
Both at home and abroad the research of Treatment of Hydrogen Sulfide Waste Gas is more and more paid attention to, the method for carrying out desulfurization according to its faintly acid and strong reducing property can be divided into dry method and wet method.Dry method is to utilize the reproducibility and the combustibility of hydrogen sulfide, comes desulfurization or directly burning with solid oxidizer or adsorbent, comprising Claus method, iron oxide process, activated carbon method and Ka Taisuerfufa etc.Wet method is divided into liquid absorption method and absorbs oxidizing process two classes by its used different desulfurization solvents.Chemical absorption method that utilizes alkaline solution and the Physical Absorption method of utilizing organic solvent and physical chemistry absorption process are arranged in the liquid absorption method.Absorbing oxidizing process mainly utilizes various oxidants, catalyst to carry out desulfurization.With regard to present dry method and wet method two big sulfur removal technologies, dry desulfurization is to remove sulfide with solid absorbent, desulfuration efficiency is higher, but equipment investment is bigger, need super regeneration or replacing, its sulfur capacity is relatively low, and desulfurization solvent can not be regenerated mostly, need to handle, mainly be suitable for the meticulous desulfurization of gas.Wet desulphurization is to remove sulfide with liquid-absorbant, and the device processes amount is big, and investment and operating cost are little, but continued operation can adapt to the desulfurization requirement of higher load, the application surface broad, and wherein the advantage with liquid phase oxidation is comparatively outstanding especially.Industrialized absorption oxidizing process at present just, arsyl technology does not re-use substantially; Vanadium base technology also will be subjected to the restriction of environmental regulation because use contains the vanadium washing lotion; PDS (the alert sulfonate that bores of double-core phthalein) desulfur technology is owing to catalyst system therefor PDS cost height, and desulphurization cost is corresponding wants high; Iron-based technology desulfuration efficiency height, sulfur capacity is big, but these class methods remain the problem that needs solution many at aspects such as stability of solution, side reaction control and regeneration.At present, it is N methyldiethanol amine that a kind of desulfurization solvent MDEA that is widely used is arranged in the wet desulphurization, MDEA and H
2S forms more stable soda acid complex compound in water, but also can with a large amount of CO that exist in the gas
2Form the soda acid complex compound, absorb H thereby influence MDEA
2The problem of the amount of S.
Summary of the invention
The technical problem to be solved in the present invention is: present MDEA desulfurization solvent exists and CO
2Reaction influences the problem of the effect of desulfurization, the invention provides a kind of new formulation type desulfurization solvent.
The technical solution adopted for the present invention to solve the technical problems is: the invention provides a kind of desulfurization solvent, wherein contain N methyldiethanol amine, N methyldiethanol amine content in desulfurization solvent is 93.5～96wt%, and all the other are defoamer, corrosion inhibiter, antioxidant and reinforcing agent.
The purity of employed N methyldiethanol amine is more than or equal to 95wt% among the present invention.
Defoamer used in the present invention is a dimethicone, its use amount accounts for 0.05～0.2wt% of whole desulfurization solvent, dimethicone is a kind of defoamer commonly used, can well eliminate the foam that desulfurization solvent produces when absorbing sulfurous gas, reaches the purpose of fast Absorption.
Corrosion inhibiter used in the present invention is thiocarbamide, dimethyl sulfourea, 1,4-succinimide mercaptans or sulfo-diethylene glycol (DEG), and its use amount accounts for 0.02～0.05wt% of whole desulfurization solvent, and corrosion inhibiter can form film in equipment surface, less absorption H
2Behind the S, the H that ionization goes out in solution
+Erosion to equipment surface.
Employed antioxidant is 2 among the present invention, and 6-DI-tert-butylphenol compounds, hydroquinones, MEHQ or diethyl hydroxylamine, the content in described desulfurization solvent are 0.05～0.2wt%.
Employed reinforcing agent is boric acid, phosphoric acid, phosphorous acid, polyethers phosphoric acid, butyric acid, valeric acid or oleic acid among the present invention, and the content in described desulfurization solvent is 3～6wt%.
Preparation method of the present invention stirs the reinforcing agent of the N methyldiethanol amine of 93.5～96 parts (following umber is mass fraction), 0.05～0.2 part of defoamer, 0.02～0.05 part of corrosion inhibiter, 0.05～0.2 part of antioxidant and 3～6 minutes and makes uniform solution, i.e. desulfurization solvent in stirred tank.
The present invention is applicable to the holder H of natural gas, refinery gas
2S handles, in particular for CO in the unstripped gas
2(vol%)/H
2The natural gas that S (vol%) volume ratio is high, the desulfurization of refinery gas are handled.
The invention has the beneficial effects as follows that the present invention has than MDEA or based on the higher selection of common composite desulfurization solvent of MDEA and absorbs H when handling the raw material of high carbon-sulfur ratio
2The ability of S can make the H in the regenerated acidic gas
2The S volume content increases by 5～10%, and desulphurization system solvent internal circulating load can descend 10% simultaneously, is the new product of a kind of energy-conservation, consumption reduction, environmental protection.
The specific embodiment
The invention will be further described below by embodiment, and its purpose is to be better understanding content of the present invention.
Example one
With the N methyldiethanol amine of 95 parts of purity 98wt%, 0.2 part of dimethicone, 0.05 part of dimethyl sulfourea, 0.2 part 2,6-DI-tert-butylphenol compounds and 6 fens phosphoric acid stir in stirred tank makes uniform solution, i.e. desulfurization solvent.
Example two
With the N methyldiethanol amine of 93.5 parts of purity 99wt%, 0.1 part of dimethicone, 0.03 part 1,4-succinimide mercaptans, 0.05 part of MEHQ and 4 fens butyric acid stir in stirred tank makes uniform solution, i.e. desulfurization solvent.
Example three
The N methyldiethanol amine of 96 parts of purity 95wt%, 0.1 part of dimethicone, 0.03 portion of sulfo-diethylene glycol (DEG), 0.05 part of hydroquinones and 4 segregation ether phosphoric acids are stirred in stirred tank make uniform solution, i.e. desulfurization solvent.
Specific embodiment described herein only is illustrating spirit of the present invention, real name person of ordinary skill in the field can do various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can not depart from spirit of the present invention.
Claims (8)
1. a desulfurization solvent wherein contains N methyldiethanol amine, it is characterized in that: described N methyldiethanol amine content in described desulfurization solvent is 93.5～96wt%, and all the other are defoamer, corrosion inhibiter, antioxidant and reinforcing agent.
2. desulfurization solvent according to claim 1 is characterized in that: the purity of described N methyldiethanol amine is more than or equal to 95wt%.
3. desulfurization solvent according to claim 1, it is characterized in that: the content of described defoamer in described desulfurization solvent is 0.05～0.2wt%, the content of described corrosion inhibiter in described desulfurization solvent is 0.02～0.05wt%, the content of described antioxidant in described desulfurization solvent is 0.05～0.2wt%, and the content of described reinforcing agent in described desulfurization solvent is 3～6wt%.
4. desulfurization solvent according to claim 1 and 2 is characterized in that: described defoamer is a dimethicone.
5. desulfurization solvent according to claim 1 and 2 is characterized in that: described corrosion inhibiter is thiocarbamide, dimethyl sulfourea, 1,4-succinimide mercaptans or sulfo-diethylene glycol (DEG).
6. desulfurization solvent according to claim 1 and 2 is characterized in that: described antioxidant is 2,6-DI-tert-butylphenol compounds, hydroquinones, MEHQ or diethyl hydroxylamine.
7. desulfurization solvent according to claim 1 and 2 is characterized in that: described reinforcing agent is boric acid, phosphoric acid, phosphorous acid, polyethers phosphoric acid, butyric acid, valeric acid or oleic acid.
8. desulfurization solvent preparation method according to claim 1, it is characterized in that: the reinforcing agent of the N methyldiethanol amine of 93.5～96 parts (following umber is mass fraction), 0.05～0.2 part of defoamer, 0.02～0.05 part of corrosion inhibiter, 0.05～0.2 part of antioxidant and 3～6 minutes is stirred in stirred tank make uniform solution, i.e. desulfurization solvent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100240264A CN101264411A (en) | 2008-04-23 | 2008-04-23 | Desulfurization solvent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100240264A CN101264411A (en) | 2008-04-23 | 2008-04-23 | Desulfurization solvent |
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| Publication Number | Publication Date |
|---|---|
| CN101264411A true CN101264411A (en) | 2008-09-17 |
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|---|---|---|---|
| CNA2008100240264A Pending CN101264411A (en) | 2008-04-23 | 2008-04-23 | Desulfurization solvent |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101822932A (en) * | 2010-06-12 | 2010-09-08 | 中国石油集团工程设计有限责任公司 | Composite decarbonization solvent for eliminating carbon dioxide in natural gases |
| CN101829492A (en) * | 2010-05-18 | 2010-09-15 | 上海景凯环保科技有限公司 | Chemical absorbent |
| CN102421507A (en) * | 2009-05-12 | 2012-04-18 | 巴斯夫欧洲公司 | Absorbent for the selective removal of hydrogen sulfide from fluid flows |
| CN102985159A (en) * | 2010-04-28 | 2013-03-20 | 利兹大学 | Process for the capture of carbon dioxide |
| CN102994187A (en) * | 2012-12-11 | 2013-03-27 | 江苏汉光实业股份有限公司 | Selective desulfurizing agent |
| CN103157348A (en) * | 2013-04-03 | 2013-06-19 | 江苏创新石化有限公司 | High efficient desulfurizing agent with low energy consumption |
| CN103357261A (en) * | 2013-06-24 | 2013-10-23 | 宜兴汉光高新石化有限公司 | Compound desulfurizer and preparation method thereof |
| CN106474901A (en) * | 2015-08-28 | 2017-03-08 | 江苏科创石化有限公司 | A kind of composite desulfurizing agent and preparation method thereof |
| CN107469589A (en) * | 2016-06-07 | 2017-12-15 | 中国石油化工股份有限公司 | Laminated desulfurizer and preparation method thereof |
| CN107754560A (en) * | 2016-08-19 | 2018-03-06 | 通用电气公司 | Gas handling system and exhaust gas treating method |
| CN112592729A (en) * | 2020-10-19 | 2021-04-02 | 宜兴汉光高新石化有限公司 | Desulfurizing agent and preparation method thereof |
-
2008
- 2008-04-23 CN CNA2008100240264A patent/CN101264411A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102421507B (en) * | 2009-05-12 | 2014-07-23 | 巴斯夫欧洲公司 | Absorbent for the selective removal of hydrogen sulfide from fluid flows |
| CN102421507A (en) * | 2009-05-12 | 2012-04-18 | 巴斯夫欧洲公司 | Absorbent for the selective removal of hydrogen sulfide from fluid flows |
| CN102985159A (en) * | 2010-04-28 | 2013-03-20 | 利兹大学 | Process for the capture of carbon dioxide |
| CN101829492A (en) * | 2010-05-18 | 2010-09-15 | 上海景凯环保科技有限公司 | Chemical absorbent |
| CN101822932B (en) * | 2010-06-12 | 2013-01-02 | 中国石油集团工程设计有限责任公司 | Composite decarbonization solvent for eliminating carbon dioxide in natural gases |
| CN101822932A (en) * | 2010-06-12 | 2010-09-08 | 中国石油集团工程设计有限责任公司 | Composite decarbonization solvent for eliminating carbon dioxide in natural gases |
| CN102994187A (en) * | 2012-12-11 | 2013-03-27 | 江苏汉光实业股份有限公司 | Selective desulfurizing agent |
| CN103157348A (en) * | 2013-04-03 | 2013-06-19 | 江苏创新石化有限公司 | High efficient desulfurizing agent with low energy consumption |
| CN103357261A (en) * | 2013-06-24 | 2013-10-23 | 宜兴汉光高新石化有限公司 | Compound desulfurizer and preparation method thereof |
| CN103357261B (en) * | 2013-06-24 | 2016-04-27 | 宜兴汉光高新石化有限公司 | A kind of composite desulfurizing agent and preparation method thereof |
| CN106474901A (en) * | 2015-08-28 | 2017-03-08 | 江苏科创石化有限公司 | A kind of composite desulfurizing agent and preparation method thereof |
| CN107469589A (en) * | 2016-06-07 | 2017-12-15 | 中国石油化工股份有限公司 | Laminated desulfurizer and preparation method thereof |
| CN107754560A (en) * | 2016-08-19 | 2018-03-06 | 通用电气公司 | Gas handling system and exhaust gas treating method |
| CN112592729A (en) * | 2020-10-19 | 2021-04-02 | 宜兴汉光高新石化有限公司 | Desulfurizing agent and preparation method thereof |
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Open date: 20080917 |