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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0590995 (1990-10-01) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 305 인용 특허 : 0 |
An apparatus and method for producing ethylene polymer are provided which employ a conduit in the form of a closed loop (i.e. loop reactor) for receiving a flow of a monomer which includes ethylene, a polymerization catalyst and a diluent therethrough for the polymerization of the monomer to ethylen
An apparatus and method for producing ethylene polymer are provided which employ a conduit in the form of a closed loop (i.e. loop reactor) for receiving a flow of a monomer which includes ethylene, a polymerization catalyst and a diluent therethrough for the polymerization of the monomer to ethylene polymer. The conduit comprises at least one pipe constructed of rolled plate around which coolant fluid passes in heat exchange relationship.
A method of producing ethylene polymer which comprises: (a) providing a conduit means which defines a flow passageway therethrough so as to form a closed loop, wherein at least a portion of said conduit means comprises at least one pipe, having an exterior surface, constructed of rolled plate which
A method of producing ethylene polymer which comprises: (a) providing a conduit means which defines a flow passageway therethrough so as to form a closed loop, wherein at least a portion of said conduit means comprises at least one pipe, having an exterior surface, constructed of rolled plate which has two edges joined along a seam, and wherein said rolled plate comprises a steel which comprises less than about 0.5 weight percent carbon, less than about 1.5 weight percent manganese, less than about 1.0 weight percent silicon, less than about 2.5 weight percent chromium, and less than about 1.0 weight percent nickel; (b) introducing at least one monomer which includes ethylene into said passageway; (c) introducing a polymerization catalyst and diluent into said passageway; (d) establishing a flow of said at least one monomer, said catalyst and said diluent in admixture through said passageway and around said closed loop to thereby produce ethylene polymer in said passageway; (e) passing a flow of coolant fluid, during step (d), in heat exchange relationship with the exterior surface of said at least one pipe of said conduit means; and (g) withdrawing polymer from said passageway.
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