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ES481845A1 - Improved Filtration of Wax in a Solvent Dewaxing Process - Google Patents

Improved Filtration of Wax in a Solvent Dewaxing Process

Info

Publication number
ES481845A1
ES481845A1 ES481845A ES481845A ES481845A1 ES 481845 A1 ES481845 A1 ES 481845A1 ES 481845 A ES481845 A ES 481845A ES 481845 A ES481845 A ES 481845A ES 481845 A1 ES481845 A1 ES 481845A1
Authority
ES
Spain
Prior art keywords
filter
wax
drum
solvent
filter cloth
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
ES481845A
Other languages
Spanish (es)
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.)
Texaco Development Corp
Original Assignee
Texaco Development 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
Application filed by Texaco Development Corp filed Critical Texaco Development Corp
Publication of ES481845A1 publication Critical patent/ES481845A1/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
    • 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
    • C10G73/025—Recovery of petroleum waxes from hydrocarbon oils; Dewaxing of hydrocarbon oils by filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums

Landscapes

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

Abstract

In the separation of wax crystals from dewaxed oil and solvent using a rotary drum vacuum filter having a filter cloth around its periphery embedded wax and/or resin is removed from the filter cloth on the drum by backwashing the filter cloth with cold solvent at not more than 30 DEG F above the filtration temperature introduced at 12-100 psig from within the drum over an area defined by an arc of the filter drum of 12 DEG - 72 DEG . Cake on the primary filter 3 is treated with an inward flow of inert gas over segment 14, washed with a spray 16 of cold solvent, treated with a second inward flow of inert gas over segment 20 and then backwashed with cold solvent or repulp filtrate 22 over segment 23. A backwashing process can also be applied to the repulp filter 26.
ES481845A 1978-06-23 1979-06-22 Improved Filtration of Wax in a Solvent Dewaxing Process Expired ES481845A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US91885478A 1978-06-23 1978-06-23

Publications (1)

Publication Number Publication Date
ES481845A1 true ES481845A1 (en) 1980-02-16

Family

ID=25441074

Family Applications (1)

Application Number Title Priority Date Filing Date
ES481845A Expired ES481845A1 (en) 1978-06-23 1979-06-22 Improved Filtration of Wax in a Solvent Dewaxing Process

Country Status (14)

Country Link
AU (1) AU520751B2 (en)
BR (1) BR7903961A (en)
CA (1) CA1132935A (en)
ES (1) ES481845A1 (en)
FR (1) FR2429253A1 (en)
GB (1) GB2023641B (en)
GR (1) GR69226B (en)
IN (1) IN151207B (en)
MA (1) MA18487A1 (en)
MX (1) MX6066E (en)
PH (1) PH16591A (en)
PT (1) PT69776A (en)
YU (1) YU40844B (en)
ZA (1) ZA792722B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5190673A (en) * 1991-06-12 1993-03-02 Mobil Oil Corp. Filtration in solvent dewaxing with continuous spraying of filter with both hot and cold solvents

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1857810A (en) * 1929-01-24 1932-05-10 Texas Co Filtration
FR46141E (en) * 1935-03-28 1936-03-05 Texaco Development Corp Filtration improvements
US2350944A (en) * 1941-05-02 1944-06-06 Lummus Co Dewaxing apparatus
US2592490A (en) * 1949-11-29 1952-04-08 Socony Vacuum Oil Co Inc Method of dewaxing oil and continuous rotary filter therefor
US3491885A (en) * 1966-11-21 1970-01-27 Texaco Development Corp Apparatus for washing filter cake in solvent dewaxing operations

Also Published As

Publication number Publication date
GR69226B (en) 1982-05-10
IN151207B (en) 1983-03-05
FR2429253A1 (en) 1980-01-18
AU520751B2 (en) 1982-02-25
YU146479A (en) 1983-10-31
YU40844B (en) 1986-06-30
GB2023641B (en) 1982-10-13
FR2429253B1 (en) 1985-01-25
MA18487A1 (en) 1979-12-31
CA1132935A (en) 1982-10-05
ZA792722B (en) 1980-10-29
BR7903961A (en) 1980-03-18
MX6066E (en) 1984-10-24
GB2023641A (en) 1980-01-03
AU4815879A (en) 1980-01-03
PH16591A (en) 1983-11-22
PT69776A (en) 1979-07-01

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Legal Events

Date Code Title Description
MM4A Patent lapsed

Effective date: 19960401