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 olefinsInfo
- 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
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.
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) |
-
1957
- 1957-10-02 GB GB30811/57A patent/GB852837A/en not_active Expired
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