KR101582792B1 - 올레핀의 기상 중합을 위한 공정 - Google Patents
올레핀의 기상 중합을 위한 공정 Download PDFInfo
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- KR101582792B1 KR101582792B1 KR1020107013700A KR20107013700A KR101582792B1 KR 101582792 B1 KR101582792 B1 KR 101582792B1 KR 1020107013700 A KR1020107013700 A KR 1020107013700A KR 20107013700 A KR20107013700 A KR 20107013700A KR 101582792 B1 KR101582792 B1 KR 101582792B1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F110/00—Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F110/04—Monomers containing three or four carbon atoms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
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- B01J19/2415—Tubular reactors
- B01J19/2435—Loop-type reactors
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00049—Controlling or regulating processes
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Abstract
(a) 상승관에 존재하는 기체 혼합물과 상이한 조성을 갖는 액체 배리어 (LB) 를 하강관의 상부 안으로 도입함으로써, 상승관 내에 존재하는 기체 혼합물이 하강관으로 들어가는 것이 전체적으로 또는 부분적으로 방지되고,
(b) 상기 하강관과 상기 상승관 사이에서 순환되는 폴리머의 유량 (Fp) 과 상기 액체의 유량 (LB) 의 비 (R) 가 10 ~ 50 의 범위에서 조정되는 것을 특징으로 한다.
Description
Claims (9)
- 두 개의 상호연결된 중합 구역에서 수행되는 α-올레핀 CH2=CHR 의 기상 중합을 위한 공정으로서, 이때 R 은 수소 또는 1 ~ 12 개의 탄소 원자를 가지는 탄화수소 라디칼이고, 성장 폴리머 입자가 고속 유동화 조건 하에 상기 중합 구역 중 제 1구역 (상승관) 을 통해 흐른 후, 상기 상승관을 빠져나와 상기 중합 구역 중 제 2 구역 (하강관) 으로 들어가 고밀도화 형태로 하방으로 흐른 후, 상기 하강관을 빠져나와 상기 상승관으로 재도입되어서, 상승관과 하강관 사이에서 폴리머의 순환을 성립시키는 공정에 있어서, 상기 공정은:
(a) 상승관에 존재하는 기체 혼합물과 상이한 조성을 갖는 액체 배리어 (LB) 를 상기 하강관의 상부 안으로 도입함으로써, 상승관 내에 존재하는 기체 혼합물이 하강관으로 들어가는 것이 전체적으로 또는 부분적으로 방지되고,
(b) 상기 하강관과 상기 상승관 사이에서 순환되는 폴리머의 유량 (Fp) 과 상기 액체 배리어의 유량 (LB) 의 비 (R) 가 10 ~ 50 의 범위에서 조정되는, α-올레핀 CH2=CHR 의 기상 중합을 위한 공정. - 제 1 항에 있어서, 상기 액체 배리어 (LB) 의 부분 증발이 상기 하강관의 상부에서, 폴리머의 하방 유동과 반대 방향으로 이동하는 가스의 유동을 발생시키는, α-올레핀 CH2=CHR 의 기상 중합을 위한 공정.
- 제 1 항에 있어서, 상기 액체 배리어 (LB) 는 새로운 올레핀 모노머의 응축으로부터 얻어지는, α-올레핀 CH2=CHR 의 기상 중합을 위한 공정.
- 제 1 항에 있어서, 상기 액체 배리어 (LB) 는 기상 반응기에 연속적으로 재순환되는 기체 스트림의 일부의 응축으로부터 생기는, α-올레핀 CH2=CHR 의 기상 중합을 위한 공정.
- 제 1 항에 있어서, 상기 액체 배리어 (LB) 는 C2 ~ C8 알칸으로부터 선택된 응축가능한 불활성 화합물을 포함하는, α-올레핀 CH2=CHR 의 기상 중합을 위한 공정.
- 제 1 항에 있어서, 상기 유량 (Fp) 은 100 t/h ~ 2500 t/h 의 범위인, α-올레핀 CH2=CHR 의 기상 중합을 위한 공정.
- 제 1 항에 있어서, 상기 유량 (Fp) 과 반응기로부터 배출된 폴리머의 유량의 중량비가 10 ~ 60 의 범위인, α-올레핀 CH2=CHR 의 기상 중합을 위한 공정.
- 제 1 항에 있어서, 상기 비 R=Fp/LB 가 12 ~ 30 의 범위인, α-올레핀 CH2=CHR 의 기상 중합을 위한 공정.
- 제 1 항에 있어서, 상기 유량 (Fp) 이 상기 하강관의 하부에 있는 제한부에 위치된 제어 밸브의 개구 및/또는 하강관으로 들어가는 주입 가스의 유량을 변화시킴으로써 조정되는, α-올레핀 CH2=CHR 의 기상 중합을 위한 공정.
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