CN1785480A - Membrane adsorption natural gas desulfur method - Google Patents
Membrane adsorption natural gas desulfur method Download PDFInfo
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- CN1785480A CN1785480A CN 200510095472 CN200510095472A CN1785480A CN 1785480 A CN1785480 A CN 1785480A CN 200510095472 CN200510095472 CN 200510095472 CN 200510095472 A CN200510095472 A CN 200510095472A CN 1785480 A CN1785480 A CN 1785480A
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Abstract
A membrane absorption method for removing the acidic gas (H2S, organo-sulfur, etc) from the natural gas in oil-gas field by use of micro-pore hollow fiber membrane includes such steps as introducing natural gas to tubular cavity of membrane separator, penetrating H2S to outside of tubular cavity, absorbing it by absorptive liquid, heating the absorptive liquid by heat exchanger, and regenerating the absorptive liquid while releasing H2S, and pumping the H2S into tail gas tank by vacuum pump.
Description
Technical field
The invention belongs to the Oil-Gas Storage and Transportation Engineering technical field, refer in particular to membrane adsorption natural gas desulfur method.Be applied to the natural gas in oil and gas fields purification separation, can effectively remove the H in the natural gas
2Sour gas such as S, organic sulfur.
Background technology
Natural gas is the mixture of hydrocarbon and plurality of impurities gas, comprising hydrogen sulfide, and sour gas such as carbon dioxide.Hydrogen sulfide in the natural gas can reduce thermal capacity, corrosion carrier pipe and the use equipment of natural gas, and air is caused very big pollution, when concentration of hydrogen sulfide in the natural gas surpasses 0.1%, can be in the several seconds causing death.So before using or carrying, these hydrogen sulfide gas must be removed from natural gas.
Existing desulfur technology mainly is wet type (amine absorption process, a Claus method) method.Yang Dehu, Xu Min point out (natural gas embrane method treatment technology [J]. Inner Mongol petrochemical industry, 2004,30:28-30): the wet absorption method is a kind of natural gas processing method that develops comparative maturity, equipment is huge, heavy, investment cost is high but this method exists, problems such as regeneration and environmental pollution, and two fluids mix contact fully, therefore the interdependency that has caused two fluids of contact, and contact arrangement also can produce phenomenons such as liquid flooding, Wu Mo are carried secretly, channel, bubbling.
Long celebrating gas field once utilized single membrane separation technique carry out selexol process (Yu Haojie, the commerical test of the unconventional purification method of long celebrating gas field natural gas, Inner Mongol petrochemical industry, 1997,23 (S1): 54-64), the result takes off H
2S efficient is not high, can only reach 44.58%, takes off CO
2Efficient can only reach 49.2%, can not satisfy the defeated requirement of pipe.
Summary of the invention
The purpose of this invention is to provide a kind of less membrane adsorption natural gas desulfur method of investing, it uses the sulphur in the microporous hollow fiber film separating natural gas, the hydrogen sulfide that utilizes the akaline liquid absorption and separation to go out at the opposite side of film, again with absorption liquid by the film regenerator, hydrogen sulfide is parsed.
Implementation process of the present invention is:
Use the sulphur in the microporous hollow fiber film separating natural gas, natural gas is entered into the tube chamber of membrane separator by pressure-reducing valve, the hydrogen sulfide gas in the opposite side natural gas of film penetrates into the tube chamber outside, and by the absorption liquid bulk absorption by the membrane separator shell side.Absorb liquid and flow out membrane separator, through the heat exchanger heating, to absorb in the liquid suction film regenerator by sliding-vane pump, hydrogen sulfide gas in the absorption liquid infiltrates the film tube chamber, is extracted out by vavuum pump, enters the tail gas jar, absorption liquid after the regeneration flows out regenerator simultaneously, by filter cleaning, carry out another circulation, thereby finish the sweetening process of natural gas.Wherein membrane separation device comprises membrane module and the film regenerator that has 2～20 μ m micropores, and operates at normal temperatures.
Wherein absorbing liquid is MDEA, and its operating temperature range is at 40 ℃-80 ℃.And as required, but the installation of membrane module serial or parallel connection, to be suitable for the selexol process of different disposal amount and different sulfur-bearing rates.
Desulfuration efficiency can reach more than 95%.Compare with other sulfur method, the present invention is the sulfur method that membrane separation technique is combined with akaline liquid MDEA absorption techniques, and investment cost reduces 30% at least, and operating cost reduces 25%.It can produce the non-dispersive contact and bigger contact area is provided between two immiscible phases, it is a kind of brand-new, effective more contact mass transfer method, bigger 30 times than the contact area of traditional wet method, effectively avoided phenomenons such as liquid flooding, Wu Mo carry secretly, channel, bubbling.
Description of drawings
Fig. 1 membrane adsorption natural gas desulfur process chart;
Fig. 2 membrane module schematic diagram;
1. pressure-reducing valve; 2. spinner flowmeter; 3. membrane separator; 4. heat exchanger; 5. sliding-vane pump; 6. vavuum pump; 7. tail gas jar; 8. regenerator; 9. filter 10. housings; 11. microporous hollow fiber film pipe
The specific embodiment
As shown in Figure 1, 2, raw natural gas process pressure-reducing valve (1) enters the tube chamber of the membrane separator (3) that adopts microporous hollow fiber film pipe (11), and hydrogen sulfide gas wherein penetrates into the tube chamber outside of membrane module, is taken away by the absorption liquid of membrane separator shell side.Natural gas flow after the purification goes out membrane separator (3).
Absorb liquid by filter (7) to remove impurity wherein, enter into the shell side of membrane separator, the hydrogen sulfide gas that absorption is oozed out from film tube chamber inside, enter into heat exchanger (4) behind the outflow membrane separator (3) and be heated to predetermined temperature, then flow into the shell side of film regenerator (8), stink damp cognition wherein is seeped into film tube chamber inside, and taken away by vavuum pump (6), enter tail gas jar (7), the liquid after the parsing flows out film regenerator (8), circulates next time.
Claims (3)
1. membrane adsorption natural gas desulfur method, it is characterized in that using the sulphur in the microporous hollow fiber film separating natural gas, natural gas is entered into the tube chamber of membrane separator by pressure-reducing valve, hydrogen sulfide gas in the opposite side natural gas of film penetrates into the tube chamber outside, and by the absorption liquid bulk absorption by the membrane separator shell side; Absorb liquid and flow out membrane separator, through the heat exchanger heating, to absorb in the liquid suction film regenerator by sliding-vane pump, the hydrogen sulfide gas in the absorption liquid infiltrates the film tube chamber, is extracted out by vavuum pump, enter the tail gas jar, absorption liquid after the regeneration flows out regenerator simultaneously, by filter cleaning, carries out another circulation, thereby finish the sweetening process of natural gas, wherein membrane separation device comprises membrane module and the film regenerator that has 2～20 μ m micropores.
2. membrane adsorption natural gas desulfur method according to claim 1, it is characterized in that absorbing liquid is MDEA, its operating temperature range is at 40 ℃-80 ℃.
3. membrane adsorption natural gas desulfur method according to claim 1, but it is characterized in that the installation of membrane module serial or parallel connection.
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| CN 200510095472 CN1785480A (en) | 2005-11-17 | 2005-11-17 | Membrane adsorption natural gas desulfur method |
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| CN 200510095472 CN1785480A (en) | 2005-11-17 | 2005-11-17 | Membrane adsorption natural gas desulfur method |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101822931B (en) * | 2010-05-11 | 2012-07-04 | 浙江大学 | Decompression regeneration system and method for hollow fiber membrane contactor of carbon dioxide enriched absorbent solution |
| CN102671511A (en) * | 2012-05-10 | 2012-09-19 | 南京信息工程大学 | Energy-saving process for separating acid gas from mixed gas with membrane absorption method |
| CN103349853A (en) * | 2013-06-14 | 2013-10-16 | 珠海市江河海水处理设备工程有限公司 | System and process for removing gases such as hydrogen sulfide in liquid with hydrophobic membrane material |
| CN103421566A (en) * | 2013-08-21 | 2013-12-04 | 常州大学 | Process and device for recycling sulfur removed from natural gas |
| CN103805274A (en) * | 2014-03-04 | 2014-05-21 | 中国石油化工股份有限公司 | Liquefied gas desulfurization refining device and liquefied gas desulfurization refining method in oil refinery |
| US8999149B2 (en) | 2013-06-28 | 2015-04-07 | Uop Llc | Process for removing gases from a sweetened hydrocarbon stream, and an appartus relating thereto |
| CN104962333A (en) * | 2015-05-29 | 2015-10-07 | 西安建筑科技大学 | Membrane separation biogas biological desulfurization method and device |
| CN105505498A (en) * | 2016-01-20 | 2016-04-20 | 天津中油现代石油设备有限公司 | Novel natural gas desulphurizing device |
| CN105623765A (en) * | 2014-11-27 | 2016-06-01 | 上海碧科清洁能源技术有限公司 | Gas separation apparatus and use method thereof |
| US9393526B2 (en) | 2013-06-28 | 2016-07-19 | Uop Llc | Process for removing one or more sulfur compounds and an apparatus relating thereto |
| CN106554835A (en) * | 2015-09-24 | 2017-04-05 | 中国石油化工股份有限公司 | A kind of removing of hydrogen sulfide in natural gas and recycling processing method |
| CN106554836A (en) * | 2015-09-24 | 2017-04-05 | 中国石油化工股份有限公司 | A kind of processing method of hydrogen sulfide in natural gas |
| CN106554833A (en) * | 2015-09-24 | 2017-04-05 | 中国石油化工股份有限公司 | A kind of removing of hydrogen sulfide in natural gas and recycling processing method |
| CN106554834A (en) * | 2015-09-24 | 2017-04-05 | 中国石油化工股份有限公司 | A kind of removal methods of hydrogen sulfide in natural gas |
| CN106552476A (en) * | 2015-09-24 | 2017-04-05 | 中国石油化工股份有限公司 | A kind of method of removing hydrogen sulfide in natural gas |
| CN110997108A (en) * | 2017-08-21 | 2020-04-10 | 埃克森美孚上游研究公司 | Integration of cold solvent and acid gas removal |
-
2005
- 2005-11-17 CN CN 200510095472 patent/CN1785480A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101822931B (en) * | 2010-05-11 | 2012-07-04 | 浙江大学 | Decompression regeneration system and method for hollow fiber membrane contactor of carbon dioxide enriched absorbent solution |
| CN102671511A (en) * | 2012-05-10 | 2012-09-19 | 南京信息工程大学 | Energy-saving process for separating acid gas from mixed gas with membrane absorption method |
| CN103349853A (en) * | 2013-06-14 | 2013-10-16 | 珠海市江河海水处理设备工程有限公司 | System and process for removing gases such as hydrogen sulfide in liquid with hydrophobic membrane material |
| CN103349853B (en) * | 2013-06-14 | 2016-01-06 | 珠海市江河海水处理设备工程有限公司 | A kind of system and technique thereof utilizing hydrogen sulfide gas in hydrophobic membrane material removal liquid |
| US8999149B2 (en) | 2013-06-28 | 2015-04-07 | Uop Llc | Process for removing gases from a sweetened hydrocarbon stream, and an appartus relating thereto |
| US9393526B2 (en) | 2013-06-28 | 2016-07-19 | Uop Llc | Process for removing one or more sulfur compounds and an apparatus relating thereto |
| CN103421566B (en) * | 2013-08-21 | 2016-01-27 | 常州大学 | A kind of natural gas deviates from sulfur recovery technology and device |
| CN103421566A (en) * | 2013-08-21 | 2013-12-04 | 常州大学 | Process and device for recycling sulfur removed from natural gas |
| CN103805274A (en) * | 2014-03-04 | 2014-05-21 | 中国石油化工股份有限公司 | Liquefied gas desulfurization refining device and liquefied gas desulfurization refining method in oil refinery |
| CN105623765A (en) * | 2014-11-27 | 2016-06-01 | 上海碧科清洁能源技术有限公司 | Gas separation apparatus and use method thereof |
| CN104962333A (en) * | 2015-05-29 | 2015-10-07 | 西安建筑科技大学 | Membrane separation biogas biological desulfurization method and device |
| CN104962333B (en) * | 2015-05-29 | 2017-09-01 | 西安建筑科技大学 | A kind of UF membrane Methane biodesulfurization method and its device |
| CN106554835A (en) * | 2015-09-24 | 2017-04-05 | 中国石油化工股份有限公司 | A kind of removing of hydrogen sulfide in natural gas and recycling processing method |
| CN106554836A (en) * | 2015-09-24 | 2017-04-05 | 中国石油化工股份有限公司 | A kind of processing method of hydrogen sulfide in natural gas |
| CN106554833A (en) * | 2015-09-24 | 2017-04-05 | 中国石油化工股份有限公司 | A kind of removing of hydrogen sulfide in natural gas and recycling processing method |
| CN106554834A (en) * | 2015-09-24 | 2017-04-05 | 中国石油化工股份有限公司 | A kind of removal methods of hydrogen sulfide in natural gas |
| CN106552476A (en) * | 2015-09-24 | 2017-04-05 | 中国石油化工股份有限公司 | A kind of method of removing hydrogen sulfide in natural gas |
| CN105505498A (en) * | 2016-01-20 | 2016-04-20 | 天津中油现代石油设备有限公司 | Novel natural gas desulphurizing device |
| CN110997108A (en) * | 2017-08-21 | 2020-04-10 | 埃克森美孚上游研究公司 | Integration of cold solvent and acid gas removal |
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