GB1309456A - Method for separating naphthenic acids from mixtures containing such acids and hydrocarbons - Google Patents

Method for separating naphthenic acids from mixtures containing such acids and hydrocarbons

Info

Publication number
GB1309456A
GB1309456A GB2835770A GB2835770A GB1309456A GB 1309456 A GB1309456 A GB 1309456A GB 2835770 A GB2835770 A GB 2835770A GB 2835770 A GB2835770 A GB 2835770A GB 1309456 A GB1309456 A GB 1309456A
Authority
GB
United Kingdom
Prior art keywords
acid
mixture
acids
methanol
solution
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
GB2835770A
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.)
Nynas-Petroleum AB
Original Assignee
Nynas-Petroleum AB
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 claimed from SE08416/69A external-priority patent/SE349054B/xx
Priority claimed from SE03352/70A external-priority patent/SE357573B/xx
Application filed by Nynas-Petroleum AB filed Critical Nynas-Petroleum AB
Publication of GB1309456A publication Critical patent/GB1309456A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/42—Separation; Purification; Stabilisation; Use of additives
    • C07C51/48—Separation; Purification; Stabilisation; Use of additives by liquid-liquid treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1309456 Naphthenic acid separation NYNASPETROLEUM AB 11 June 1970 [13 June 1969 13 March 1970] 28357/70 Heading C2C [Also in Division C5] A method for separating a naphthenic acid from a mixture containing such an acid and hydrocarbons, such as high boiling mineral oils, comprises treating the mixture with an extraction agent for the acid at a temperature of from 10‹ C. below the boiling point of the extraction agent to slightly above the boiling point to form a solution of the alkali metal salt of the acid, the extraction agent comprising an alkali metal hydroxide and a mixture of water and methanol which contains at least 70 wt. per cent methanol, and the ratio between the crude mixture and the extracting agent being from 5 :1 to 1 : 1, separating the solution from the remainder of the hydrocarbon-containing mixture and, if desired, treating the solution with a stronger acid to liberate the naphthenic acid. The hydrocarbon phase may be washed with a solvent, e.g. methanol, the solvent driven off by distillation and the residual oil optionally redistilled and bleached to produce a neutral lubricating oil.
GB2835770A 1969-06-13 1970-06-11 Method for separating naphthenic acids from mixtures containing such acids and hydrocarbons Expired GB1309456A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE08416/69A SE349054B (en) 1969-06-13 1969-06-13
SE03352/70A SE357573B (en) 1970-03-13 1970-03-13

Publications (1)

Publication Number Publication Date
GB1309456A true GB1309456A (en) 1973-03-14

Family

ID=26654438

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2835770A Expired GB1309456A (en) 1969-06-13 1970-06-11 Method for separating naphthenic acids from mixtures containing such acids and hydrocarbons

Country Status (2)

Country Link
DE (1) DE2028741A1 (en)
GB (1) GB1309456A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001079386A2 (en) * 2000-04-18 2001-10-25 Exxonmobil Research And Engineering Company Method for reducing the naphthenic acid content of crude oil and its fractions
WO2002099013A2 (en) * 2001-06-05 2002-12-12 Bp Exploration Operating Company Limited Process for deacidifying crude oil

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001079386A2 (en) * 2000-04-18 2001-10-25 Exxonmobil Research And Engineering Company Method for reducing the naphthenic acid content of crude oil and its fractions
WO2001079386A3 (en) * 2000-04-18 2002-07-25 Exxonmobil Res & Eng Co Method for reducing the naphthenic acid content of crude oil and its fractions
US6531055B1 (en) 2000-04-18 2003-03-11 Exxonmobil Research And Engineering Company Method for reducing the naphthenic acid content of crude oil and fractions
AU2001249542B2 (en) * 2000-04-18 2005-04-21 Exxonmobil Research And Engineering Company Method for reducing the naphthenic acid content of crude oil and its fractions
WO2002099013A2 (en) * 2001-06-05 2002-12-12 Bp Exploration Operating Company Limited Process for deacidifying crude oil
WO2002099013A3 (en) * 2001-06-05 2003-10-30 Bp Exploration Operating Process for deacidifying crude oil

Also Published As

Publication number Publication date
DE2028741A1 (en) 1970-12-17

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees