CA2117279A1 - Composition and Method for Sweetening Hydrocarbons - Google Patents

Composition and Method for Sweetening Hydrocarbons

Info

Publication number
CA2117279A1
CA2117279A1 CA2117279A CA2117279A CA2117279A1 CA 2117279 A1 CA2117279 A1 CA 2117279A1 CA 2117279 A CA2117279 A CA 2117279A CA 2117279 A CA2117279 A CA 2117279A CA 2117279 A1 CA2117279 A1 CA 2117279A1
Authority
CA
Canada
Prior art keywords
sweetening
reaction
natural gas
uninhibited
ethylene diamine
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA2117279A
Other languages
French (fr)
Other versions
CA2117279C (en
Inventor
James Francis Vasil
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SWEET CHEM CORP
Original Assignee
SWEET CHEM CORP
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
Priority to US08/097,716 priority Critical patent/US5314672A/en
Priority to GB9410018A priority patent/GB2290799A/en
Application filed by SWEET CHEM CORP filed Critical SWEET CHEM CORP
Priority to CA002117279A priority patent/CA2117279C/en
Priority to AU63266/94A priority patent/AU6326694A/en
Publication of CA2117279A1 publication Critical patent/CA2117279A1/en
Application granted granted Critical
Publication of CA2117279C publication Critical patent/CA2117279C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • B01D53/1493—Selection of liquid materials for use as absorbents

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

A method and composition are disclosed for sweetening, i.e., selectively reducing the levels of H2S and organic sulfides, in gaseous hydrocarbons streams, particularly natural gas streams. A natural gas in a pipe line, at the well head, or at a common col-lection point from a number of wells, is contacted with a sweetening agent comprising the reaction product of ethylene diamine with 50% uninhibited aqueous formaldehyde. The reaction product is prepared by reacting one part 99% ethylene diamine with two parts 50%
aqueous uninhibited formalin at a temperature of about 55-60°C. (higher temperatures may be used if the reaction is carried out under pressure) and is characterized by having a higher flash point, lower toxicity, and a lower freezing point, and better reaction rates, than other sweetening agents currently in use. The sweetening solution is water soluble, free from methanol or other alcohols, does not foam uncontrollably in use, and is free from water insoluble solids which would interfere with the injectability of the solution into a stream of flowing natural gas. The sweetening reaction takes place in-line without the need for a holding tank or reaction vessel. However, the treatment with the sweetening agent may also be carried out in a conventional gas treating tower. The reaction is complete and effective to completely sweeten a sour gas system.
CA002117279A 1992-05-22 1994-05-20 Composition and method for sweetening hydrocarbons Expired - Fee Related CA2117279C (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US08/097,716 US5314672A (en) 1992-05-22 1993-07-27 Composition and method for sweetening hydrocarbons
GB9410018A GB2290799A (en) 1992-05-22 1994-05-19 Composition and method for sweetening hydrocarbons
CA002117279A CA2117279C (en) 1992-05-22 1994-05-20 Composition and method for sweetening hydrocarbons
AU63266/94A AU6326694A (en) 1992-05-22 1994-05-23 Composition and method for sweetening hydrocarbons

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US88767692A 1992-05-22 1992-05-22
GB9410018A GB2290799A (en) 1992-05-22 1994-05-19 Composition and method for sweetening hydrocarbons
CA002117279A CA2117279C (en) 1992-05-22 1994-05-20 Composition and method for sweetening hydrocarbons
AU63266/94A AU6326694A (en) 1992-05-22 1994-05-23 Composition and method for sweetening hydrocarbons

Publications (2)

Publication Number Publication Date
CA2117279A1 true CA2117279A1 (en) 1995-11-21
CA2117279C CA2117279C (en) 2000-01-18

Family

ID=27423630

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002117279A Expired - Fee Related CA2117279C (en) 1992-05-22 1994-05-20 Composition and method for sweetening hydrocarbons

Country Status (4)

Country Link
US (1) US5314672A (en)
AU (1) AU6326694A (en)
CA (1) CA2117279C (en)
GB (1) GB2290799A (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0672446B1 (en) * 1994-03-18 2002-11-13 The Kansai Electric Power Co., Inc. Method for the removal of hydrogen sulfide present in gases
US5462721A (en) * 1994-08-24 1995-10-31 Crescent Holdings Limited Hydrogen sulfide scavenging process
US6267938B1 (en) * 1996-11-04 2001-07-31 Stanchem, Inc. Scavengers for use in reducing sulfide impurities
US6036888A (en) * 1997-08-22 2000-03-14 Betzdearborn Inc. Corrosion inhibitor for alkanolamine units
US6773582B2 (en) * 2002-09-25 2004-08-10 Precision Control Technology, Inc. Drinking water treatment system including hydrogen sulfide scrubber using triazine compound and associated methods
US20040152796A1 (en) * 2003-01-31 2004-08-05 Crompton Corporation Process for preparing polyurethane foams having reduced VOC emissions
US7077884B2 (en) * 2004-06-09 2006-07-18 Precision Control Technology, Inc. Hydrogen sulfide scrubber using polymeric amine and associated methods
US7678835B2 (en) * 2006-04-10 2010-03-16 Momentive Performance Materials Inc. Low-foaming gas processing compositions and uses thereof
US7438877B2 (en) * 2006-09-01 2008-10-21 Baker Hughes Incorporated Fast, high capacity hydrogen sulfide scavengers
US20080121104A1 (en) * 2006-11-27 2008-05-29 David George Quinn Silicone antifoam composition and method using same
CN101816878B (en) * 2010-04-30 2012-07-04 四川省精细化工研究设计院 Novel high-efficient compound decarbonization solvent
US9463989B2 (en) 2011-06-29 2016-10-11 Baker Hughes Incorporated Synergistic method for enhanced H2S/mercaptan scavenging
US9278307B2 (en) 2012-05-29 2016-03-08 Baker Hughes Incorporated Synergistic H2 S scavengers
US9169717B2 (en) * 2012-11-06 2015-10-27 Lubrizol Oilfield Solutions Inc. High uptake sulfur solvent systems and methods for making and using same
WO2015123329A1 (en) * 2014-02-13 2015-08-20 Ecolab Usa Inc. Process for scavenging hydrogen sulfide present in a fluid stream
CA2941556C (en) * 2014-03-05 2021-10-26 Lubrizol Oilfield Solutions, Inc. High uptake sulfur solvent systems and methods for making and using same
WO2016186918A1 (en) 2015-05-15 2016-11-24 Dow Global Technologies Llc Foam control of gas sweetening processes
JP7074754B2 (en) 2016-12-08 2022-05-24 エコラブ ユーエスエイ インク Hydrogen sulfide scavenger for polymer treated asphalt
US11946008B2 (en) 2022-05-04 2024-04-02 Nexgen Oilfield Chemicals, Llc Compositions and methods for scavenging hydrogen sulfide

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2596273A (en) * 1947-09-11 1952-05-13 Cities Service Oil Co Method of inhibiting hydrogen sulfide corrosion of metals
US3970625A (en) * 1973-03-14 1976-07-20 Allied Chemical Corporation Production of urea-formaldehyde concentrates
US4748011A (en) * 1983-07-13 1988-05-31 Baize Thomas H Method and apparatus for sweetening natural gas
US4877578A (en) * 1985-03-29 1989-10-31 Petrolite Corporation Corrosion inhibitors
US4978512B1 (en) * 1988-12-23 1993-06-15 Composition and method for sweetening hydrocarbons
RU2080909C1 (en) * 1988-12-23 1997-06-10 Петролите Холдингз, Инк. Method of selectively reducing hydrogen sulfide and/or organic sulfide content in gaseous and/or liquid streams
CA2017047C (en) * 1989-08-01 1999-08-17 Jerry J. Weers Method of scavenging hydrogen sulfide from hydrocarbons

Also Published As

Publication number Publication date
GB9410018D0 (en) 1994-07-06
US5314672A (en) 1994-05-24
AU6326694A (en) 1996-01-04
GB2290799A (en) 1996-01-10
CA2117279C (en) 2000-01-18

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Legal Events

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EEER Examination request
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