[특허]Agitator for a horizontal polymerization reactor having contiguous paddle stations with paddles and sub-stations with sub-station paddles

[미국특허] Agitator for a horizontal polymerization reactor having contiguous paddle stations with paddles and sub-stations with sub-station paddles 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01F-007/04
출원번호	US-0206625 (1998-12-07)
발명자 / 주소	James Hanawalt Lee Chi-Hung Lin Barry F. Wood
출원인 / 주소	BP Corporation North America Inc.
대리인 / 주소	Patrick J. Kim
인용정보	피인용 횟수 : 10 인용 특허 : 33

초록 ▼

Improved apparatus for mechanically stirring a quench-cooled subfluidized particulate bed of polymerized monomer lowers lumping of polymer particles by using substantially contiguous paddle stations disposed along the drive shaft within the reactor in combination with a plurality of sub-stations in at least one paddle station class, each sub-station having a width along the shaft of no more than 50 percent of the total width of the paddle station, and sub-station paddles attached to the shaft at each sub-station so as to sweep through the particulate bed. In some embodiments, a first class of stations is, advantageously, disposed within the reactor along a portion of the drive shaft in repeating groups of at least two stations and a second class of stations with sub-stations is disposed within the reactor along another portion of the drive shaft, preferably in repeating groups of at least one more than the number of stations in the repeating group of the first class, to further reduce lumping of polymer particles.

대표청구항 ▼

1. Apparatus for mechanically-stirring polymer particles in a vapor-phase polymerization system having at least one horizontally disposed cylindrical polymerization reactor containing subfluidized particulate polymer bed wherein at least a portion of the heat of polymerization is removed by evaporative cooling using a readily volatilizable quench liquid, comprising:a drive shaft being coaxially mounted for rotation about its longitudinal axis and predominantly within a substantially horizontal cylindrical polymerization reactor having a cylindrical reactor wall and inner diameter; one or more classes or substantially contiguous paddle stations disposed along the drive shaft within the reactor, each station having one or more station paddles attached to the shaft so as to sweep through a cylindrical zone within the reactor thereby defining station lengths along the shaft; and a plurality of sub-stations in at least one of said paddle station classes, each sub-station having lengths along the shaft of no more than 50 percent of total width of the paddle station, and one or more sub-station paddles attached to said drive shaft at each sub-station so as to sweep through a sub-section of the cylindrical zone within the reactor, said one or more substation paddles being disposed in one or more planes including said axis of said drive shaft.

이 특허에 인용된 특허 (33) 인용/피인용 타임라인 분석

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Buchelli Alberto (Houston TX) Caracotsios Malamas (Naperville IL), Polymerization of alpha-olefins.
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Wei Nan (Naperville IL) Rose Philip M. (Naperville IL) Lin Chi-Hung (Wheaton IL) Kreider David R. (Wheaton IL) Stark Ronald P. (Oswego IL), Powder feeder apparatus.
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Jezl James L. (St. Charles IL) Peters Edwin F. (Winfield IL) Hall Robert D. (Wheaton IL) Shepard John W. (Naperville IL), Process for the vapor phase polymerization of monomers in a horizontal, quench-cooled, stirred-bed reactor using essenti.
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Peters Edwin F. (Winfield IL) Spangler Michael J. (Dolton IL) Michaels Glenn O. (South Holland IL) Jezl James L. (St. Charles IL), Vapor phase reactor off-gas recycle system for use in the vapor state polymerization of monomers.
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A	생활필수품
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A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Agitator for a horizontal polymerization reactor having contiguous paddle stations with paddles and sub-stations with sub-station paddles 원문보기