GB852837A - Method and apparatus for separation and recovery of filter aid and catalyst used in polymerization of olefins - Google Patents

Method and apparatus for separation and recovery of filter aid and catalyst used in polymerization of olefins

Info

Publication number
GB852837A
GB852837A GB30811/57A GB3081157A GB852837A GB 852837 A GB852837 A GB 852837A GB 30811/57 A GB30811/57 A GB 30811/57A GB 3081157 A GB3081157 A GB 3081157A GB 852837 A GB852837 A GB 852837A
Authority
GB
United Kingdom
Prior art keywords
catalyst
polymerization
filter
aid
filter aid
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
GB30811/57A
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.)
Phillips Petroleum Co
Original Assignee
Phillips Petroleum 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 Phillips Petroleum Co filed Critical Phillips Petroleum Co
Publication of GB852837A publication Critical patent/GB852837A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/02—Settling tanks with single outlets for the separated liquid
    • 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
    • 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
    • B01D33/58—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
    • B01D33/60—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for washing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

The separation and recovery of filter aid from admixture with a solid substantially water-insoluble polymerization catalyst, wherein an oxide of a heavy metal is the principal polymerization promoting material, and which is used in a low-pressure polymerization process is accomplished by drying said filter aidcatalyst mixture, dispersing said dried mixture in water or in an aqueous solution, removing floating catalyst, and removing and recovering filter aid which sinks in the water or solution, said catalyst and filter aid each having a specific gravity greater than that of the aqueous solution employed. The catalyst may be one employed in the polymerization or copolymerization of olefines such as ethylene, propylene or other 1-olefines by the low pressure process in the presence of a solvent such as cyclohexane and other paraffins and cycloparaffins such as propane, isobutane, n-butane, pentane, cyclopentane, hexane, heptane or octane. The catalyst may be one containing chromium oxide, e.g. chromium oxide-silica-alumina, and is separated from the polymerization product mixture by filtration in the presence of a filter-aid such as diatomaceous earth, leaving a mixed residue of filter-aid and catalyst. The catalyst-filter aid mixture may be pulverized after drying and a list of apparatus is given for separating the floating and non-floating portions of the aqueous dispersion. Specifications 790,195 and 804,641 are referred to.
GB30811/57A 1956-10-16 1957-10-02 Method and apparatus for separation and recovery of filter aid and catalyst used in polymerization of olefins Expired GB852837A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US852837XA 1956-10-16 1956-10-16

Publications (1)

Publication Number Publication Date
GB852837A true GB852837A (en) 1960-11-02

Family

ID=22190586

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30811/57A Expired GB852837A (en) 1956-10-16 1957-10-02 Method and apparatus for separation and recovery of filter aid and catalyst used in polymerization of olefins

Country Status (1)

Country Link
GB (1) GB852837A (en)

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