KR970706315A - 알파-올레핀의 기상 중합 방법 및 장치(process and apparatus for the gas-phase polymerization of alpha-olefins) - Google Patents

알파-올레핀의 기상 중합 방법 및 장치(process and apparatus for the gas-phase polymerization of alpha-olefins) Download PDF

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KR970706315A
KR970706315A KR1019970701830A KR19970701830A KR970706315A KR 970706315 A KR970706315 A KR 970706315A KR 1019970701830 A KR1019970701830 A KR 1019970701830A KR 19970701830 A KR19970701830 A KR 19970701830A KR 970706315 A KR970706315 A KR 970706315A
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가브리엘 고보니
로베르토 리날디
마시모 코베찌
파올로 갈리
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Abstract

1종 이상의 α-올레핀 CH2=CHR이 반응 조건하에서 촉매 존재하에 도입되고, 생성된 중합체가 배출되는, 2개의 내부적으로 연결된 중합 지역에서 수행되는 기상 중합 방법. 이 방법은 성장되는 중합체가 신속한 유동 조건하에 있는 제1의 중합 지역을 통과하여 유동하고, 제1중합 지역을 떠난 후, 중력의 작용하에 고밀도화된 형태로 이들이 유동하는 제2중합 지역으로 들어가고, 상기 제2중합 지역을 떠나 제1중합 지역으로 재도입됨으로써 2개의 중합 지역사이에서 중합체의 순환이 이루어짐을 특징으로 한다. 이 신규 방법은 종래 공지 수준의 유동층 기술의 문제점을 발생함이 없이, 높은 반응기의 단위 부피당 생산성으로, 기상으로 올레핀을 중합할 수 있도록 한다.

Description

알파-올레핀의 기상 중합 방법 및 장치(PROCESS AND APPARATUS FOR THE GAS-PHASE POLYMERIZATION OF ALPHA-OLEFINS)
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음

Claims (34)

1종 이상의 하기 α-올레핀이 반응 조건하에서 촉매 존재하에 도입되고, 생성된 중합체가 배출되는, 제1 및 제2의 내부적으로 연결된 중합 지역에서 수행되는 α-올레핀 CH2=CHR (여기에서, R은 수소 또는 탄소 원자수 1-12의 탄화 수소 라디칼이다)의 기상 중합 방법으로서, 성장되는 중합체 입자가 신속한 유동 조건하에 있는 제1의 중합 지역을 통과하여 유동하고, 제1중합 지역을 떠난 후, 중력의 작용하에 고밀도화된 형태로 이들이 유동하는 제2중합 지역으로 들어가고, 제2중합 지역을 떠나 제1중합 지역으로 재도입됨으로써 2개의 중합 지역 사이에서 중합체의 순환이 이루어짐을 특징으로 하는 방법.
제1항에 있어서, 1종 이상의 α-올레핀 CH2=CHR을 포함하는 기체 혼합물을 제1중합 지역에 공금함으로써 신속한 중합 조건을 달성함을 특징으로 하는 방법.
제2항에 있어서, 제1의 중합 지역으로 중합체가 재도입되는 지점 아래의 부분에 있는 제1의 중합 지역에 기체 혼합물을 공급함을 특징으로 하는 방법.
제3항에 있어서, 기체 분배 장치를 사용함으로써 기체 혼합물의 공급을 수행함을 특징으로 하는 방법.
제1항 내지 제4항 중 어느 한 항에 있어서, 제1의 중합 지역을 떠난 중합체 및 기체 혼합물이 고체/기체 분리 지역으로 이송되고, 고체/기체 분리 지역을 떠난 중합체가 제2중합 지역으로 들어감을 특징으로 하는 방법.
제1항 내지 제5항 중 어느 한 항에 있어서, 2개의 중합 지역사이에서 순환하는 중합체의 조절이 제2중합지역을 떠난 중합체의 양을 측정함으로써 수행됨을 특징으로 하는 방법.
제1항 내지 제6항 중 어느 한 항에 있어서, 생성된 중합체를 제2중합 지역으로부터 연속적으로 회수함을 특징으로 하는 방법.
제1항 내지 제7항 중 어느 한 항에 있어서, 촉매 성분이 제1중합 지역으로 공급됨을 특징으로 하는 방법.
제1항 내지 제8항 중 어느 한 항에 있어서, 예비중합된 형태의 촉매가 반응 지역의 어떤 위치에서도 공급됨을 특징으로 하는 방법.
제1항 내지 제9항 중 어느 한 항에 있어서, 중합체 슬러리 중에 분산된 촉매가 반응 지역의 어떤 위치에서도 공급됨을 특징으로 하는 방법.
제1항 내지 제10항 중 어느 한 항에 있어서, 건조된 중합체에 분산된 촉매가 반응 지역의 어떤 위치에서도 공급됨을 특징으로 하는 방법.
제5항에 있어서, 고체/기체 분리지역을 떠난 기체 혼합물을 압축되고, 냉각되며, 필요하다면, 메이크업 단량체와 함께 제1중합 지역으로 이동됨을 특징으로 하는 방법.
제5항에 있어서, 고체/기체 분리지역을 떠난 기체 혼합물의 일부가 제2중합 지역으로부터 제1중합 지역으로 중합체를 이동시키는데에 사용됨을 특징으로 하는 방법.
제5항에 있어서, 고체/기체 분리지경을 떠난 기체 혼합물의 일부가 압축되고, 중합체가 제2지역을 떠난 지역 근처에 있는 제2중합 지역으로 이동됨을 특징으로 하는 방법.
제12항에 있어서, 고체/기체 분리지역을 떠난 기체 혼합물이 이슬점 온도 미만의 온도에게 냉각됨을 특징으로 하는 방법.
제1항 내지 제15항 중 어느 한 항에 있어서, 제1중합 지역이 외부 냉각장치에 의해 냉각됨을 특징으로 하는 방법.
제1항 내지 제16항 중 어느 한 항에 있어서, 메이크업 단량체 또는 단량체가 적어도 부분적으로 응축된 형태로 제1중합 지역으로 공급됨을 특징으로 하는 방법.
제2항에 있어서, 제1중합 지역으로 들어가는 유동 기체의 속도가 2 내지 15m/s, 바람잭하게는 3 내지 8m/s임을 특징으로 하는 방법.
제1항에 있어서, 중합체가 0.2 내지 5mm, 바람직하게는 0.5 내지 3mm평균 치수를 갖는 회전타원체영 입자의 형태임을 특징으로 하는 방법.
제1항에 있어서, 작동 압력이 0.5 내지 10MPa, 바람직하게 1.5 내지 6MPa임을 특징으로 하는 방법.
제1항에 있어서, 1종 이상의 비활성 기체가 총 기체 압력의 5 내지 80%의 부분 압력으로 중합체 지역내에 존재함을 특징으로 하는 방법.
제21항에 있어서, 비활성 기체가 질소 또는 탄소 원자수 2-6의 지방족 탄화수소, 바람직하게는 프로판임을 특징으로 하는 방법.
제1항에 있어서, 유동층으로 작동하는 중간 중합 지역이 제1 및 제2중합 지역 사이에 존재함을 특징으로 하는 방법.
촉매 공급 라인(34)이 장착된 제1의 수직 실린더형 반응기(20) 및 중합체 배출 시스템(23)이 장착된 제2의 수직 실린더형 반응기(30)를 포함하며, 제1의 반응기(20)의 상부는 제2의 반응기(30)의 상부와 차례로 연결된 고체/기체 분리기(22)에 제1라인(21)으로 연결되어 있으며; 제2의 반응기(30)의 저부는 제2의 라인(31)을 통해 제1의 반응기(20)의 저부에 연결되어 있으며; 고체/기체 분리기(22)는 제2의 라인(31)의 전체 지점 아래에 있는 제1의 반응기(20)의 바닥에 있는 부위(37)에서 제1의 반응기(20)에 기체 혼합물용 재생 라인(36)으로 연결되어 있음을 특징으로 하는 α-올레핀 기상 중합용 장치.
제24항에 있어서, 제2라인(31)의 전체 지점과 제1반응기(20)의 바닥에 있는 지역(37) 사이에 위치된 기체 분배 장치(33)가 제1의 반응기(20)에 장착되어 있음을 특징으로 하는 장치.
제24항에 있어서, 중합체 유동 속도 조절용의 제1조절 밸브(24)가 제2반응기(30) 및 제2라인(31) 사이에 존재함을 특징으로 하는 장치.
제26항에 있어서, 제1밸브(24)가 기계적 밸브임을 특징으로 하는 장치.
제26항에 있어서, 제1밸브(24)가 비기계적 밸브임을 특징으로 하는 장치.
제25항에 있어서, 촉매 공급 라인(34)이 제3라인 (32)을 통해 기체 배분 장치(33)의 상부 지점에 있는 제1의 반응기(20)에 연결됨을 특징으로 하는 장치.
제24항에 있어서, 기체 혼합물용 재순환 라인(36)에 압축기(26), 냉각 시스템(27) 및 단량체(28) 및 분자량 조절제(29) 도입용 시스템이 장착됨을 특징으로 하는 장치.
제24항에 있어서, 제1라인(21) 이 제1반응기(20)의 상부지역을 수평적으로 떠남을 특징으로 하는 장치.
제24항에 있어서, 제1반응기의 상부 지역이 광범위한 말단 최상부가 있는 절단원추형 구조임을 특징으로 하는 장치.
제30항에 있어서, 기체 혼합물용 재순환 라인(36)이 압축기(26)의 하류 지점에서 라인(25)를 통해 제2라인(31)에 연결됨을 특징으로 하는 장치.
제24항에 있어서, 제1의 반응기(20)에 외부 냉각 장치(35)가 장착됨을 특징으로 하는 장치.
※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019970701830A 1995-07-20 1996-07-17 알파-올레핀의기상중합방법및장치 KR100436464B1 (ko)

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