Title:
反応器への開始剤給送装置
Document Type and Number:
Japanese Patent JP4270867
Kind Code:
B2
Abstract:
In a process for preparing polyethylene in tube reactors with or without autoclaves, where a free-radical initiator is introduced with or without cold ethylene into a flowing ethylene- and comonomer-containing medium, rotation is generated between two streams ( 61, 62 ) to be mixed at an angle ( 66 ) or by provision of a swirl element ( 20, 80 ) in the flow cross section ( 27, 28 ). In the region of a feed point ( 72, 81 ) for a free-radical initiator, there is provided a cross-sectional constriction ( 63, 67, 71 ) at which the free-radical initiator is introduced through an optimized off-center outlet opening ( 44 ) of an introduction finger ( 40 ) into the rotating flow ( 61, 62, 70 ).
Inventors:
Growth, Georg
Mailing, Frank-Olav
Dice, Andreas
Dietman, Dieter
Efelez, Caspar
Mailing, Frank-Olav
Dice, Andreas
Dietman, Dieter
Efelez, Caspar
Application Number:
JP2002549744A
Publication Date:
June 03, 2009
Filing Date:
November 27, 2001
Export Citation:
Assignee:
Basel, Polyolefin, Gezel Shaft, Mitt, Beschlenktel, Haftung
International Classes:
C08F2/01; B01F5/04; B01F5/06; B01J3/04; B01J19/24; B01J19/26; C08F2/00; C08F10/00; C08F10/02; B01F5/00; B01F13/10
Domestic Patent References:
| JP53055386A | ||||
| JP62160126A | ||||
| JP51046386A | ||||
| JP62101608A |
Attorney, Agent or Firm:
Satoshi Eto
Previous Patent: 非音声のスピーチの高性能の低ビット速度コード化方法および装置
Next Patent: REFRIGERANT HEATING TYPE AIR-CONDITIONING MACHINE
Next Patent: REFRIGERANT HEATING TYPE AIR-CONDITIONING MACHINE