CN102994187A - Selective desulfurizing agent - Google Patents
Selective desulfurizing agent Download PDFInfo
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- CN102994187A CN102994187A CN2012105321071A CN201210532107A CN102994187A CN 102994187 A CN102994187 A CN 102994187A CN 2012105321071 A CN2012105321071 A CN 2012105321071A CN 201210532107 A CN201210532107 A CN 201210532107A CN 102994187 A CN102994187 A CN 102994187A
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Abstract
The invention discloses a selective desulfurizing agent, which comprises chemical components of, by weight percentage, 95.6-97.2% of N-methyl diethanol amine, 0.02-1.1% of a water-soluble defoaming agent, 0.1-1.05% of a stabilizer, 0.02-0.6% of sulfonated cobalt phthalocyanine, and 0.01-0.6% of an inhibitor. The selective desulfurizing agent prepared by the invention has the following advantages: (1) the selective desulfurizing agent has good selectivity, sulfur-containing gas absorption rate of 97%, and content of liquefied gas H2S no higher than 5ppm; (2) during the heating regeneration process, sulfur gains high recovery purity, and is treated with a regenerated desulfurizing agent to realize small consumption; and (3) liquefied gas treated by the desulfurizing agent provided by the invention has low sulfur content, applies with national standards, and has no odor and significantly reduced pollution to the environment.
Description
Technical field
The present invention relates to a kind of selective desulfurization agent.
Background technology
Along with processing crude oil becomes heavy, the quantitative change of crude oil sulfur-bearing is large, liquefied gas sulfide hydrogen and the SO of generation at present
XConstantly raise Deng sulfurous gas per-cent.Liquefied gas is all very important to the injury of the person to the pollution that environment causes like this, the liquefied gas sulfur-bearing standard light rain 5ppm that also stipulates to dispatch from the factory of country, moreover element sulphur is a kind of important Mineral resources, is the requisite important source material of chemical industry, can not waste in vain, maximum reclaims to the greatest extent.The selective desulfurization agent is exactly the sulfurous gas (H that selects to absorb in the liquefied gas
2S, SO
2, SO
3), absorb less to the greatest extent nitrogenously, carbonaceous gas is conducive to the recovery of element sulphur, generates elemental sulfur, rich solution can be regenerated as lean solution effectively simultaneously, is come and gone recycling, whole process, the selective desulfurization agent can keep its activity for a long time.
Because N methyldiethanol amine has higher selectivity and lower energy consumption to hydrogen sulfide, and sulfur capacity is large, is widely used in selexol process, gasification desulfurization and the refinery's desulfurization.N methyldiethanol amine is to not corrosion of carbon steel, and alkalescence own is very weak, and does not produce thermal destruction product and chemical degradation product.
Summary of the invention
The object of the present invention is to provide a kind of selective desulfurization agent.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of selective desulfurization agent is characterized in that, the weight percent of its chemical ingredients is: N methyldiethanol amine 95.6-97.2%, water insoluble defoamer 0.02-1.1%, stablizer 0.1-1.05%, sulfonated phthalocyanine cobalt 0.02-0.6%, inhibiter 0.01-0.6%.
The weight percent of each chemical ingredients of the present invention is preferably: N methyldiethanol amine 97%, water insoluble defoamer 1%, stablizer 1%, sulfonated phthalocyanine cobalt 0.5%, inhibiter 0.5%.
Described stablizer is rare earth oxide.
Described inhibiter is inorganic inhibitor.
Described inorganic inhibitor is a kind of in molybdate, tungstate, poly-phosphate, the zinc salt.
Raw material sulfonated phthalocyanine cobalt of the present invention is desulphurizing activated catalyzer, is added in the prescription, not only 95% inorganic sulfur can be removed, and can take off to get organosulfur 30-50% simultaneously.
The selectivity of selective desulfurization agent of the present invention is good, can optionally remove sulfocompound, compares general sweetening agent, and sulfur recovery rate improves 5%.
Raw material water insoluble defoamer of the present invention makes an addition in the prescription, the foaming phenomenon be improved significantly, also have stablizer, inhibiter, in the technical process, the material phenomenon can not appear running, rich solution regeneration content is higher.
Beneficial effect of the present invention: the selective desulfurization agent of the present invention's preparation has the following advantages: (1) selectivity is good, and the sulfurous gas specific absorption reaches 97%, liquefied gas H
2The S gas content is not more than 5ppm; (2) in the ramp regeneration process, sulphur recovery purity is high, and through recycling desulfurizer, consumption is less; (3) the liquefied gas sulfur-bearing of sweetening agent desulfurization processing of the present invention is lower, meets state-set standard, the liquefied gas odorless, and environmental pollution significantly reduces.
Embodiment
The invention will be further described below in conjunction with specific embodiment.
Embodiment 1
The preparation process of selective desulfurization agent: the preparation of N methyldiethanol amine: being 2.5:1 oxyethane and Monomethylamine with weight ratio reacts under 130-150 ℃ temperature, a 60-80 atmospheric pressure, makes through vacuum distillation; Batching: will account for the batching total weight percent and be 10% N methyldiethanol amine and to account for the batching total weight percent be 1% water insoluble defoamer, account for the batching total weight percent is 1% stablizer, account for the batching total weight percent is 0.5% inhibiter, account for the batching total weight percent is 0.5% sulphonation phthalein cobalt mix and blend 20-60min, then add 87% N methyldiethanol amine, with recycle pump pump around circuit 50-80min, namely obtain the selective desulfurization agent.Take out the press strip moulding, use inorganic desulfurization degree 97%, organic desulfurization degree 40% for the first time.
Embodiment 2
The preparation process of selective desulfurization agent: the preparation of N methyldiethanol amine: being the oxidative ethane of 3:1 ring and Monomethylamine with weight ratio reacts under 130-150 ℃ temperature, a 60-80 atmospheric pressure, makes through vacuum distillation; Batching: will account for the batching total weight percent and be 9% N methyldiethanol amine and to account for the batching total weight percent be 1.1 % water insoluble defoamers, account for the batching total weight percent is 0.9% stablizer, account for the batching total weight percent is 0. 6% inhibiter, account for the batching total weight percent is 0.6% sulphonation phthalein cobalt mix and blend 20-60min, then add 87.8% N methyldiethanol amine, with recycle pump pump around circuit 50-80min, namely obtain the selective desulfurization agent.Take out the press strip moulding, use inorganic desulfurization degree 95.8%, organic desulfurization degree 32% for the first time.
Embodiment 3
The preparation process of selective desulfurization agent: the preparation of N methyldiethanol amine: being the oxyethane of 2.6:1 and Monomethylamine with weight ratio reacts under 130-150 ℃ temperature, a 60-80 atmospheric pressure, makes through vacuum distillation; Batching: will account for the batching total weight percent and be 9.5% N methyldiethanol amine and to account for the batching total weight percent be 0.95% water insoluble defoamer, account for the batching total weight percent is 1.07% stablizer, account for the batching total weight percent is 0.45% inhibiter, account for the batching total weight percent is 0.52% sulphonation phthalein cobalt mix and blend 20-60min, then add 87.51% N methyldiethanol amine, with recycle pump pump around circuit 50-80min, namely obtain the selective desulfurization agent.Take out the press strip moulding, use inorganic desulfurization degree 96.1%, organic desulfurization degree 35.7% for the first time.
Embodiment 4
The preparation process of selective desulfurization agent: the preparation of N methyldiethanol amine: being the oxyethane of 2.35:1 and Monomethylamine with weight ratio reacts under 130-150 ℃ temperature, a 60-80 atmospheric pressure, makes through vacuum distillation; Batching: will account for the batching total weight percent and be 8% N methyldiethanol amine and to account for the batching total weight percent be 0.93% water insoluble defoamer, account for the batching total weight percent is 1% stablizer, account for the batching total weight percent is 0.5% inhibiter, account for the batching total weight percent is 0.45% sulphonation phthalein cobalt mix and blend 20-60min, then add 89.12% N methyldiethanol amine, with recycle pump pump around circuit 50-80min, namely obtain the selective desulfurization agent.Take out the press strip moulding, use inorganic desulfurization degree 95.6%, organic desulfurization degree 36% for the first time.
Embodiment 5
The preparation process of selective desulfurization agent: the preparation of N methyldiethanol amine: being the oxyethane of 2.7:1 and Monomethylamine with weight ratio reacts under 130-150 ℃ temperature, a 60-80 atmospheric pressure, makes through vacuum distillation; Batching: will account for the batching total weight percent and be 10% N methyldiethanol amine and to account for the batching total weight percent be 0.97% water insoluble defoamer, account for the batching total weight percent is 1% stablizer, account for the batching total weight percent is 0.58% inhibiter, account for the batching total weight percent is 0.5% sulphonation phthalein cobalt mix and blend 20-60min, then add 86.95% N methyldiethanol amine, with recycle pump pump around circuit 50-80min, namely obtain the selective desulfurization agent.Take out the press strip moulding, use inorganic desulfurization degree 96.3%, organic desulfurization degree 38% for the first time.
Embodiment 6
The preparation process of selective desulfurization agent: the preparation of N methyldiethanol amine: being the oxyethane of 2.85:1 and Monomethylamine with weight ratio reacts under 130-150 ℃ temperature, a 60-80 atmospheric pressure, makes through vacuum distillation; Batching: will account for the batching total weight percent and be 9.7% N methyldiethanol amine and to account for the batching total weight percent be 1.06% water insoluble defoamer, account for the batching total weight percent is 1.01% stablizer, account for the batching total weight percent is 0.55% inhibiter, account for the batching total weight percent is 0.55% sulphonation phthalein cobalt mix and blend 20-60min, then add 87.13% N methyldiethanol amine, with recycle pump pump around circuit 50-80min, namely obtain the selective desulfurization agent.Take out the press strip moulding, use inorganic desulfurization degree 96%, organic desulfurization degree 35% for the first time.
Claims (5)
1. a selective desulfurization agent is characterized in that, the weight percent of its chemical ingredients is: N methyldiethanol amine 95.6-97.2%, water insoluble defoamer 0.02-1.1%, stablizer 0.1-1.05%, sulfonated phthalocyanine cobalt 0.02-0.6%, inhibiter 0.01-0.6%.
2. selective desulfurization agent according to claim 1 is characterized in that the weight percent of each chemical ingredients is preferably: N methyldiethanol amine 97%, water insoluble defoamer 1%, stablizer 1%, sulfonated phthalocyanine cobalt 0.5%, inhibiter 0.5%.
3. selective desulfurization agent according to claim 1 and 2 is characterized in that described stablizer is rare earth oxide.
4. selective desulfurization agent according to claim 1 and 2 is characterized in that described inhibiter is inorganic inhibitor.
5. selective desulfurization agent according to claim 4 is characterized in that described inorganic inhibitor is a kind of in molybdate, tungstate, poly-phosphate, the zinc salt.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105321071A CN102994187A (en) | 2012-12-11 | 2012-12-11 | Selective desulfurizing agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105321071A CN102994187A (en) | 2012-12-11 | 2012-12-11 | Selective desulfurizing agent |
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|---|---|
| CN102994187A true CN102994187A (en) | 2013-03-27 |
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| CN2012105321071A Pending CN102994187A (en) | 2012-12-11 | 2012-12-11 | Selective desulfurizing agent |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109865400A (en) * | 2018-10-16 | 2019-06-11 | 上海赛思特新能源科技有限公司 | Laminated desulfurizer and preparation method thereof |
| CN111054198A (en) * | 2018-10-16 | 2020-04-24 | 上海赛思特新能源科技有限公司 | Compound desulfurizer and preparation method thereof |
| CN111905804A (en) * | 2020-08-12 | 2020-11-10 | 韩兆保 | HZB salt-inhibiting desulfurizing agent |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1384174A (en) * | 2001-04-30 | 2002-12-11 | 龙小柱 | Prepn for eliminating thiols sulfur compound of light oil or liquefied petroleum gas and its elimination process |
| CN101264411A (en) * | 2008-04-23 | 2008-09-17 | 顾泽元 | Desulfurization solvent |
| WO2012021358A2 (en) * | 2010-08-09 | 2012-02-16 | H R D Corporation | Crude oil desulfurization |
-
2012
- 2012-12-11 CN CN2012105321071A patent/CN102994187A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1384174A (en) * | 2001-04-30 | 2002-12-11 | 龙小柱 | Prepn for eliminating thiols sulfur compound of light oil or liquefied petroleum gas and its elimination process |
| CN101264411A (en) * | 2008-04-23 | 2008-09-17 | 顾泽元 | Desulfurization solvent |
| WO2012021358A2 (en) * | 2010-08-09 | 2012-02-16 | H R D Corporation | Crude oil desulfurization |
Non-Patent Citations (5)
| Title |
|---|
| 中国石油化工集团公司人事部 等: "《延迟焦化装置操作工》", 31 March 2008, 中国石化出版社 * |
| 孙秋君等: "沼气脱硫技术的研究进展", 《现代化工》 * |
| 王开岳: "天然气脱硫脱碳工艺发展进程的回顾", 《油气加工》 * |
| 程丽华: "高效脱硫剂的应用与发展", 《广东石油化工高等专科学校学报》 * |
| 邹向群: "吸收塔浆液起泡原因分析及消泡剂的选择", 《电力科技与环保》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109865400A (en) * | 2018-10-16 | 2019-06-11 | 上海赛思特新能源科技有限公司 | Laminated desulfurizer and preparation method thereof |
| CN111054198A (en) * | 2018-10-16 | 2020-04-24 | 上海赛思特新能源科技有限公司 | Compound desulfurizer and preparation method thereof |
| CN111905804A (en) * | 2020-08-12 | 2020-11-10 | 韩兆保 | HZB salt-inhibiting desulfurizing agent |
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Application publication date: 20130327 |