GB1306449A - Selective sulphide removal process - Google Patents

Selective sulphide removal process

Info

Publication number
GB1306449A
GB1306449A GB4024970A GB4024970A GB1306449A GB 1306449 A GB1306449 A GB 1306449A GB 4024970 A GB4024970 A GB 4024970A GB 4024970 A GB4024970 A GB 4024970A GB 1306449 A GB1306449 A GB 1306449A
Authority
GB
United Kingdom
Prior art keywords
solvent
aug
contacting
gas
heating
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.)
Expired
Application number
GB4024970A
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.)
Chevron USA Inc
Original Assignee
Chevron Research and Technology Co
Chevron Research Co
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 Chevron Research and Technology Co, Chevron Research Co filed Critical Chevron Research and Technology Co
Publication of GB1306449A publication Critical patent/GB1306449A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C7/00—Purification; Separation; Use of additives
    • C07C7/11—Purification; Separation; Use of additives by absorption, i.e. purification or separation of gaseous hydrocarbons with the aid of liquids
    • 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
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/52—Hydrogen sulfide
    • B01D53/523—Mixtures of hydrogen sulfide and sulfur oxides
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
    • C10K1/00—Purifying combustible gases containing carbon monoxide
    • C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
    • C10K1/16—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with non-aqueous liquids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Water Supply & Treatment (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Gas Separation By Absorption (AREA)
  • Treating Waste Gases (AREA)
  • Pyrrole Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1306449 Purifying natural gas CHEVRON RESEARCH CO 20 Aug 1970 [21 Aug 1969] 40249/70 Heading C5E [Also in Division C1] Gaseous sulphides are removed from natural gas by contacting the gas with a solution comprising a substituted aromatic nitrile having a substituent at least as strong electron attracting as fluorene and a hydrosulphide of K, Na, Li, NH 4 or dimethyl ammonium, or compounds which form such hydrosulphides under the reaction conditions in a substantially hydroxylfree solvent. Suitable substituents include CN, COOH, Cl, Br, I, F and exemplified nitriles include o- and p-iodo benzonitrile, p- and mbromobenzonitrile, o- and p-chlorobenzonitrile and m- and p-cyanobenzonitrile. Suitable solvents include piperidones, cyclotetramethylene sulphones, lower alkylene carbonates, dialkyl ethers of polyethylene glycol, and preferably pyrrolidones in particular N-methyl-2-pyrrolidone. The gas stream is preferably dehydrated by contacting with the solvent prior to the sulphide removal step. The absorption solution may be regenerated by first heating and flashing to a lower pressure to release any dissolved gases such as CO 2 and light hydrocarbons, then heating to a higher temperature to decompose the sulphide-nitrile reaction products. Alternatively the reaction products and the solvent may be separated by adding water to the spent absorbent to precipitate the degradation products and recovering the solvent in aqueous solution, from which it may be separated by distillation.
GB4024970A 1969-08-21 1970-08-20 Selective sulphide removal process Expired GB1306449A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US85187469A 1969-08-21 1969-08-21

Publications (1)

Publication Number Publication Date
GB1306449A true GB1306449A (en) 1973-02-14

Family

ID=25311941

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4024970A Expired GB1306449A (en) 1969-08-21 1970-08-20 Selective sulphide removal process

Country Status (3)

Country Link
CA (1) CA941581A (en)
DE (1) DE2041360C3 (en)
GB (1) GB1306449A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2181153A (en) * 1985-10-04 1987-04-15 El Paso Hydrocarbons Solvent extracting hydrocarbon gas
US7323598B2 (en) 2003-09-10 2008-01-29 Basf Aktiengesellschaft Preparation of xylylenediamine (XDA)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108295622A (en) * 2018-01-30 2018-07-20 郝天臻 Composite desulfurizing agent and the method that deep desulfuration is carried out to sulfurous gas

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2181153A (en) * 1985-10-04 1987-04-15 El Paso Hydrocarbons Solvent extracting hydrocarbon gas
US7323598B2 (en) 2003-09-10 2008-01-29 Basf Aktiengesellschaft Preparation of xylylenediamine (XDA)

Also Published As

Publication number Publication date
DE2041360A1 (en) 1971-02-25
DE2041360C3 (en) 1980-03-06
CA941581A (en) 1974-02-12
DE2041360B2 (en) 1979-07-05

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years