GB870862A - Pressure centrifuge apparatus and process utilizing the same - Google Patents

Pressure centrifuge apparatus and process utilizing the same

Info

Publication number
GB870862A
GB870862A GB4925/58A GB492558A GB870862A GB 870862 A GB870862 A GB 870862A GB 4925/58 A GB4925/58 A GB 4925/58A GB 492558 A GB492558 A GB 492558A GB 870862 A GB870862 A GB 870862A
Authority
GB
United Kingdom
Prior art keywords
separator
underflow
polyethylene
overflow
temperature
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
GB4925/58A
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.)
Dorr Oliver Inc
Original Assignee
Dorr Oliver Inc
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 Dorr Oliver Inc filed Critical Dorr Oliver Inc
Publication of GB870862A publication Critical patent/GB870862A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04BCENTRIFUGES
    • B04B15/00Other accessories for centrifuges
    • B04B15/08Other accessories for centrifuges for ventilating or producing a vacuum in the centrifuge
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B04CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04BCENTRIFUGES
    • B04B1/00Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/10Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl
    • B04B1/12Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl with continuous discharge

Landscapes

  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

During the manufacture of polyethylene polymerization occurs at low pressure at a temperature of 250 DEG -350 DEG F. in a cyclohexane carrier liquid in the presence of a solid catalyst. The resultant mixture is passed through a centrifugal separator system (see Group II), the polyethylene and catalyst particles being respectively contained in the overflow and underflow from the separator. To prevent polyethylene depositing the temperature within the separator is above 230 DEG F., and to prevent the cyclohexane and polyethylene boiling within the system the pressure is maintained at 100 p.s.i.g. To minimize migration in the separator of catalyst particles from the underflow to the overflow, the underflow is maintained at a temperature of 5 DEG F. below that of the overflow by cooling and returning part of the underflow to the separator.
GB4925/58A 1957-02-19 1958-02-14 Pressure centrifuge apparatus and process utilizing the same Expired GB870862A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US870862XA 1957-02-19 1957-02-19

Publications (1)

Publication Number Publication Date
GB870862A true GB870862A (en) 1961-06-21

Family

ID=22203028

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4925/58A Expired GB870862A (en) 1957-02-19 1958-02-14 Pressure centrifuge apparatus and process utilizing the same

Country Status (1)

Country Link
GB (1) GB870862A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10357787B2 (en) 2009-03-06 2019-07-23 Alfa Laval Corporate Ab Centrifugal separator having energy consumption reducing devices

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10357787B2 (en) 2009-03-06 2019-07-23 Alfa Laval Corporate Ab Centrifugal separator having energy consumption reducing devices
US10427171B2 (en) 2009-03-06 2019-10-01 Alfa Laval Corporate Ab Centrifugal separator having energy consumption reducing devices
US11396026B2 (en) 2009-03-06 2022-07-26 Alfa Laval Corporate Ab Centrifugal separator having energy consumption reducing devices

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