GB870862A - Pressure centrifuge apparatus and process utilizing the same - Google Patents
Pressure centrifuge apparatus and process utilizing the sameInfo
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B15/00—Other accessories for centrifuges
- B04B15/08—Other accessories for centrifuges for ventilating or producing a vacuum in the centrifuge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/10—Centrifuges 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
- B04B1/12—Centrifuges 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.
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)
| 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 |
-
1958
- 1958-02-14 GB GB4925/58A patent/GB870862A/en not_active Expired
Cited By (3)
| 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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