WO1997026070A1 - Method for removing sulfur-containing contaminants, aromatics and hydrocarbons from gas - Google Patents

Method for removing sulfur-containing contaminants, aromatics and hydrocarbons from gas Download PDF

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Publication number
WO1997026070A1
WO1997026070A1 PCT/NL1997/000019 NL9700019W WO9726070A1 WO 1997026070 A1 WO1997026070 A1 WO 1997026070A1 NL 9700019 W NL9700019 W NL 9700019W WO 9726070 A1 WO9726070 A1 WO 9726070A1
Authority
WO
WIPO (PCT)
Prior art keywords
gas
gas stream
sulfur
selective oxidation
absorption step
Prior art date
Application number
PCT/NL1997/000019
Other languages
French (fr)
Inventor
Jan Adolf Lagas
Theodorus Joseph Petrus Van Pol
Original Assignee
Stork Engineers & Contractors B.V.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Stork Engineers & Contractors B.V. filed Critical Stork Engineers & Contractors B.V.
Priority to AU13214/97A priority Critical patent/AU1321497A/en
Priority to EP97900808A priority patent/EP0885052A1/en
Priority to JP9525886A priority patent/JP2000507151A/en
Publication of WO1997026070A1 publication Critical patent/WO1997026070A1/en

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Classifications

    • 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
    • B01D53/14—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 by absorption
    • B01D53/1406—Multiple stage absorption
    • 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
    • B01D53/14—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 by absorption
    • 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
    • B01D53/75—Multi-step processes
    • 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
    • B01D53/86—Catalytic processes
    • 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
    • B01D53/86—Catalytic processes
    • B01D53/8603—Removing sulfur compounds
    • B01D53/8612—Hydrogen sulfide
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/02—Preparation of sulfur; Purification
    • C01B17/04—Preparation of sulfur; Purification from gaseous sulfur compounds including gaseous sulfides
    • C01B17/0404—Preparation of sulfur; Purification from gaseous sulfur compounds including gaseous sulfides by processes comprising a dry catalytic conversion of hydrogen sulfide-containing gases, e.g. the Claus process
    • C01B17/0408—Pretreatment of the hydrogen sulfide containing gases

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Treating Waste Gases (AREA)
  • Industrial Gases (AREA)
  • Gas Separation By Absorption (AREA)

Abstract

This invention relates to a method for removing sulfur-containing contaminants in the form of mercaptans and H2S from natural gas, which may also contain CO2 and higher aliphatic and aromatic hydrocarbons, and recovering elemental sulfur, wherein in a first absorption step the sulfur-containing contaminants are removed from the gas, to form on the one hand a purified gas stream and on the other hand a sour gas, which sour gas is fed to a second absorption step in which the sour gas is separated into an H2S-enriched and mercaptan-reduced first gas stream, which is fed to a Claus plant, followed by a selective oxidation step of H2S to elemental sulfur in the tail gas, and an H2S-reduced and mercaptan-enriched second gas stream, which second gas stream, if desired after further treatment, is subjected to a selective oxidation of sulfur compounds to elemental sulfur.

Claims

C ΔIUS
1. A method for removing sulfur-containing contaminants in the form of mercaptans and H S from hydrocarbon gas, which may also contain CO2 and higher aliphatic and aromatic hydrocarbons, and recovering elemental sulfur, wherein in a first absorption step the sulfur-containing contaminants are removed from the gas, to form on the one hand a purified gas stream and on the other hand a sour gas, which sour gas is fed to a second absorption step in which the sour gas is separated into an H2S-enriched and mercaptan-reduced first gas stream, which is fed to a Claus plant, followed by a selective oxidation step of H2S to elemental sulfur in the tail gas, and an H2S-reduced and mercaptan-enriched second gas stream, which second gas stream, if desired after further treatment, is subjected to a selective oxidation of sulfur compounds to elemental sulfur.
2. A method according to claim 1, wherein said second gas stream is hydrogenated prior to the selective oxidation.
3. A method according to claim 1 or 2, wherein said selective oxidation of the tail gas of the first gas stream and of the second gas stream occurs in the same reactor.
4. A method according to claim 1 or 2, wherein said selective oxidation of the tail gas of the first gas stream and of the second gas stream occurs in two separate reactors.
5. A method according to claims 1-4, wherein the first absorption step is carried out utilizing a chemical, physical, or chemical/physical absorption agent which removes substantially all sulfur compounds and CO2 from the gas .
6. A method according to claim 5, wherein as absorption agent sulfolane, in combination with a secondary or tertiary amine, is used.
7. A method according to claims 1-6, wherein the second absorption step is carried out utilizing an absorption agent based on a secondary and/or tertiary amine.
8. A method according to claims 1-7, wherein the first absorption step is carried out in such a manner that the purified gas contains not more than 10, more particularly not more than 5 ppm of sulfur-containing contaminants.
9. A method according to claims 1-8, wherein natural gas is used as the gas to be purified, which is optionally liquefied after the purification.
10. A method according to claims 1-9, wherein the second absorption step is carried out in such a manner that the content of H2S in the first gas stream is at least 2.5 times, more particularly at least 4 times higher than the content of H2S in the sour gas.
11. A method according to claims 1-10, wherein the content of mercaptans in the first gas stream is less than 1 ppm.
12. A method according to claims 2-11, wherein the hydrogenation occurs in the presence of a catalyst on support, with a catalytically active component based on at least one metal from Group VIB and at least one metal from Group VIII of the Periodic System of the Elements, more particularly on a combination of cobalt and molybdenum.
13. A method according to claims 2-12, wherein the hydrogenation occurs in the presence of an amount of water.
14. A method according to claims 2-13, wherein the second gas stream is heated indirectly prior to the hydrogenation.
PCT/NL1997/000019 1996-01-19 1997-01-20 Method for removing sulfur-containing contaminants, aromatics and hydrocarbons from gas WO1997026070A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU13214/97A AU1321497A (en) 1996-01-19 1997-01-20 Method for removing sulfur-containing contaminants, aromatics and hydrocarbons from gas
EP97900808A EP0885052A1 (en) 1996-01-19 1997-01-20 Method for removing sulfur-containing contaminants, aromatics and hydrocarbons from gas
JP9525886A JP2000507151A (en) 1996-01-19 1997-01-20 Method for removing sulfur-containing contaminants, aromatic compounds and hydrocarbons from gas

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1002135 1996-01-19
NL1002135A NL1002135C2 (en) 1996-01-19 1996-01-19 Method for removing sulfur-containing impurities, aromatics and hydrocarbons from gas.

Publications (1)

Publication Number Publication Date
WO1997026070A1 true WO1997026070A1 (en) 1997-07-24

Family

ID=19762184

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1997/000019 WO1997026070A1 (en) 1996-01-19 1997-01-20 Method for removing sulfur-containing contaminants, aromatics and hydrocarbons from gas

Country Status (11)

Country Link
EP (1) EP0885052A1 (en)
JP (1) JP2000507151A (en)
KR (1) KR19990077362A (en)
CN (1) CN1209756A (en)
AU (1) AU1321497A (en)
CA (1) CA2243482A1 (en)
ID (1) ID15833A (en)
NL (1) NL1002135C2 (en)
TW (1) TW372883B (en)
WO (1) WO1997026070A1 (en)
ZA (1) ZA97326B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003072225A1 (en) * 2002-02-26 2003-09-04 Lurgi Ag Method for eliminating mercaptan from crude gas
US6616908B2 (en) 2000-08-31 2003-09-09 The Boc Group Plc Treatment of a gas stream containing hydrogen sulphide
WO2003092862A1 (en) * 2002-05-03 2003-11-13 Lurgi Ag Method for purifying gas containing hydrocarbons
FR2916652A1 (en) * 2007-05-30 2008-12-05 Inst Francais Du Petrole Treating natural gas, comprises contacting natural gas with absorbing solution, introducing solution in column, collecting fraction and treating first and second effluent or contacting natural gas with fraction or dehydrating natural gas

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4837176B2 (en) * 2001-03-07 2011-12-14 千代田化工建設株式会社 Method for removing sulfur compounds from natural gas
FR2875236B1 (en) * 2004-09-10 2006-11-10 Total Sa METHOD AND INSTALLATION FOR TREATING DSO
CN101480560B (en) * 2008-01-09 2011-11-30 中国石油化工股份有限公司 Method for processing Claus tail gases by membrane separation
EA019187B9 (en) * 2008-11-28 2014-03-31 Шелл Интернэшнл Рисерч Маатсхаппий Б.В. Process for producing purified natural gas
SG11201607810VA (en) * 2014-04-16 2016-10-28 Saudi Arabian Oil Co Improved sulfur recovery process for treating low to medium mole percent hydrogen sulfide gas feeds with btex in a claus unit
RU2649442C2 (en) * 2016-04-25 2018-04-03 Общество с ограниченной ответственностью "Старт-Катализатор" Apparatus, method and catalyst for the purification of a gaseous raw hydrocarbon from hydrogen sulfide and mercaptans
CN110167875A (en) * 2016-12-23 2019-08-23 道达尔公司 Integrated approach for element sulphuring treatment
CN108452652B (en) * 2017-12-04 2021-06-08 盐城市兰丰环境工程科技有限公司 Industrial gas desulfurization system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3989811A (en) * 1975-01-30 1976-11-02 Shell Oil Company Process for recovering sulfur from fuel gases containing hydrogen sulfide, carbon dioxide, and carbonyl sulfide
US4088735A (en) * 1974-07-10 1978-05-09 Metallgesellschaft Aktiengesellschaft Process for purifying gases from the gasification of fossil fuels
FR2501663A1 (en) * 1981-03-13 1982-09-17 Technip Cie Simultaneous removal of carbon di:oxide and hydrogen sulphide - from natural gas etc., and recovery as conc. carbon di:oxide and sulphur
US4356161A (en) * 1981-08-24 1982-10-26 Shell Oil Company Process for reducing the total sulfur content of a high CO2 -content feed gas
EP0560039A1 (en) * 1992-03-05 1993-09-15 Krupp Koppers GmbH Process for purifying gas obtained by gasification of carbonaceous material

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4088735A (en) * 1974-07-10 1978-05-09 Metallgesellschaft Aktiengesellschaft Process for purifying gases from the gasification of fossil fuels
US3989811A (en) * 1975-01-30 1976-11-02 Shell Oil Company Process for recovering sulfur from fuel gases containing hydrogen sulfide, carbon dioxide, and carbonyl sulfide
FR2501663A1 (en) * 1981-03-13 1982-09-17 Technip Cie Simultaneous removal of carbon di:oxide and hydrogen sulphide - from natural gas etc., and recovery as conc. carbon di:oxide and sulphur
US4356161A (en) * 1981-08-24 1982-10-26 Shell Oil Company Process for reducing the total sulfur content of a high CO2 -content feed gas
EP0560039A1 (en) * 1992-03-05 1993-09-15 Krupp Koppers GmbH Process for purifying gas obtained by gasification of carbonaceous material

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6616908B2 (en) 2000-08-31 2003-09-09 The Boc Group Plc Treatment of a gas stream containing hydrogen sulphide
WO2003072225A1 (en) * 2002-02-26 2003-09-04 Lurgi Ag Method for eliminating mercaptan from crude gas
US7189282B2 (en) 2002-02-26 2007-03-13 Lurgi Ag Method for eliminating mercaptan from crude gas
WO2003092862A1 (en) * 2002-05-03 2003-11-13 Lurgi Ag Method for purifying gas containing hydrocarbons
US7157070B2 (en) 2002-05-03 2007-01-02 Lurgi Ag Method for purifying gas containing hydrocarbons
KR100941661B1 (en) * 2002-05-03 2010-02-11 러기 게엠베하 Method of purifying gas containing hydrocarbons
FR2916652A1 (en) * 2007-05-30 2008-12-05 Inst Francais Du Petrole Treating natural gas, comprises contacting natural gas with absorbing solution, introducing solution in column, collecting fraction and treating first and second effluent or contacting natural gas with fraction or dehydrating natural gas

Also Published As

Publication number Publication date
ID15833A (en) 1997-08-14
ZA97326B (en) 1997-07-22
AU1321497A (en) 1997-08-11
TW372883B (en) 1999-11-01
CN1209756A (en) 1999-03-03
CA2243482A1 (en) 1997-07-24
KR19990077362A (en) 1999-10-25
NL1002135C2 (en) 1997-07-22
EP0885052A1 (en) 1998-12-23
JP2000507151A (en) 2000-06-13

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