GB1334451A - Combination of dilution chilling with scraped surface chilling in dewaxing lubricating oils - Google Patents

Combination of dilution chilling with scraped surface chilling in dewaxing lubricating oils

Info

Publication number
GB1334451A
GB1334451A GB2574871A GB2574871A GB1334451A GB 1334451 A GB1334451 A GB 1334451A GB 2574871 A GB2574871 A GB 2574871A GB 2574871 A GB2574871 A GB 2574871A GB 1334451 A GB1334451 A GB 1334451A
Authority
GB
United Kingdom
Prior art keywords
chilling
solvent
wax
toluene
oil
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
GB2574871A
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.)
ExxonMobil Technology and Engineering Co
Original Assignee
Exxon Research and Engineering Co
Esso Research and Engineering 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 Exxon Research and Engineering Co, Esso Research and Engineering Co filed Critical Exxon Research and Engineering Co
Publication of GB1334451A publication Critical patent/GB1334451A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G21/00—Refining of hydrocarbon oils, in the absence of hydrogen, by extraction with selective solvents
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G73/00—Recovery or refining of mineral waxes, e.g. montan wax
    • C10G73/02—Recovery of petroleum waxes from hydrocarbon oils; Dewaxing of hydrocarbon oils
    • C10G73/06—Recovery of petroleum waxes from hydrocarbon oils; Dewaxing of hydrocarbon oils with the use of solvents

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

1334451 Dewaxing oils ESSO RESEARCH & ENG CO 19 April 1971 [11 May 1970] 25748/71 Heading C5E A waxy oil 2, e.g. a lubricating oil distillate, at a temperature above its cloud point is cooled in a chilling tower comprising a plurality of stages in each of which cold solvent is injected and substantially instantaneous mixing of the solvent and the oil is effected by the agitators 12. The oil/solvent/precipitated wax mixture 14 is then cooled in a scraped surface chiller 15 by not more than a further 35‹ F. and the precipitated wax is then separated at 17. As shown, the separated wax 20 can be mixed with further cold solvent 21 and the wax separated from the mixture 22 at 30. Suitable solvents are ethane, propane, butane or mixtures of (a) methyl ethyl ketone and methyl isobutyl ketone, (b) methyl ethyl ketone and toluene, (c) acetone and toluene, (d) acetone, benzene and toluene, or (e) dichlorethane and dichloromethane.
GB2574871A 1970-05-11 1971-04-19 Combination of dilution chilling with scraped surface chilling in dewaxing lubricating oils Expired GB1334451A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3627670A 1970-05-11 1970-05-11

Publications (1)

Publication Number Publication Date
GB1334451A true GB1334451A (en) 1973-10-17

Family

ID=21887678

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2574871A Expired GB1334451A (en) 1970-05-11 1971-04-19 Combination of dilution chilling with scraped surface chilling in dewaxing lubricating oils

Country Status (7)

Country Link
JP (1) JPS5422447B1 (en)
BE (1) BE797091Q (en)
CA (1) CA944300A (en)
DE (1) DE2117174C3 (en)
FR (1) FR2088471B1 (en)
GB (1) GB1334451A (en)
NL (1) NL170750C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2256199A (en) * 1991-05-29 1992-12-02 Exxon Research Engineering Co Improved solvent dewaxing process

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1564430A (en) * 1976-01-02 1980-04-10 Exxon Research Engineering Co Dilchill solvent dewasing process using wash filtrate as solvent component
US4169039A (en) * 1977-12-27 1979-09-25 Exxon Research & Engineering Co. Recovering useful oil from wax filter hot washings and dumped slurry

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2256199A (en) * 1991-05-29 1992-12-02 Exxon Research Engineering Co Improved solvent dewaxing process
GB2256199B (en) * 1991-05-29 1995-03-01 Exxon Research Engineering Co Improved solvent dewaxing process

Also Published As

Publication number Publication date
DE2117174A1 (en) 1972-01-27
CA944300A (en) 1974-03-26
DE2117174C3 (en) 1981-12-24
NL7105150A (en) 1971-11-15
FR2088471A1 (en) 1972-01-07
NL170750C (en) 1982-12-16
NL170750B (en) 1982-07-16
BE797091Q (en) 1973-09-21
DE2117174B2 (en) 1980-11-13
JPS5422447B1 (en) 1979-08-07
FR2088471B1 (en) 1975-08-22

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PE20 Patent expired after termination of 20 years