EP0260154A2
Expired / Lapsed
EP
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Gas dispersion plate for gas phase polymerization device
Assignee: Tonen General Sekiyu KK
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Filing: 1987-09-11
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Granted: —
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Expires: 2007-09-11
Abstract
Abstract A gas dispersion plate adapted to be utilized in a gas phase polymerization device for providing uniform dispersion of gas includes a plate member (2) having a plurality of holes (11) extending therethrough, each of the holes having associated therewith a cap (12, 13, 14) adapted to move in response to gas pressure between a first position wherein the cap substantially covers the hole and a second position wherein the cap is spaced from the hole.
Inventors
- 👤 Hiroto Yamada
- 👤 Osamu Komiyama
- 👤 Masahisa Shibata
- 👤 Haruo Mizakami
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 05:31
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/16; B01D3/163; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/44; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
82 words
A gas dispersion plate adapted to be utilized in a gas phase polymerization device for providing uniform dispersion of gas, said gas dispersion plate comprising a plate member (2) having a plurality of holes (11) extending therethrough, each of the holes having associated therewith cap means (12, 13, 14) adapted to move in response to gas pressure between a first position wherein said cap means substantially covers the hole and a second position wherein said cap means is spaced from the hole.
Claim 2
Dependent Claim
82 words
A gas dispersion plate adapted to be utilized in a gas phase polymerization device for providing uniform dispersion of gas, said gas dispersion plate comprising a plate member (2) having a plurality of holes (11) extending therethrough, each of the holes having associated therewith cap means (12, 13, 14) adapted to move in response to gas pressure between a first position wherein said cap means substantially covers the hole and a second position wherein said cap means is spaced from the hole.
Claim 3
Dependent Claim
119 words
A dispersion plate according claim 1 wherein said cap means includes a head portion (13) disposed in the hole and having a diameter less than the diameter of the hole and a length greater than the depth of the hole, a cap portion (12) attached to one end of said head portion, and a leg portion (14) attached to the other end of said head portion, said cap and leg portions each having a diameter greater than the diameter of the hole whereby said cap portion is adapted to substantially cover the hole when said cap means is in said first position and said leg portion is adapted to prevent movement of said cap means beyond said second position.
Claim 4
Dependent Claim
30 words
A dispersion plate according to claim 1 or 2 wherein the aggregate area of the holes of from 0.1 to 10 per cent of the area of the plate member.
Claim 5
Dependent Claim
17 words
A gas phase polymerization device which comprises a dispersion plate according to claim 1, 2 or 3.
Claim 6
Dependent Claim
40 words
A method of uniformly dispersing gas into a gas phase polymerization device according to claim 4 which comprises passing gas through the holes in the plate member at a pressure sufficient to move the cap means to said second position.
References Cited (Backward Citations)
No citation records indexed.
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