KR100531628B1 - 연속적인 슬러리 중합반응의 휘발물질 제거 - Google Patents
연속적인 슬러리 중합반응의 휘발물질 제거 Download PDFInfo
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Abstract
Description
Claims (15)
- 불활성 희석제 및 미반응 단량체를 포함하는 액체 매질중에 현탁된 미립형 중합체 고형물의 중합체 슬러리로서 반응기내에 생성된 중합체로부터 중합반응 액체 매질을 제거하고 회수하기 위한 장치로서,상기 중합체 슬러리의 일부를 상기 반응기로부터 제 1 전송관으로 연속적으로 배출시키기 위한 배출 밸브를 포함하고;상기 제 1 전송관은 그 안의 중합체 슬러리를 저부를 갖는 제 1 플래쉬 탱크로 연통시키도록 되어 있고, 상기 저부는 제 1 플래쉬 탱크 출구 밀봉실로 연통되어 있되, 상기 밀봉실은 그 안에서 압력 밀봉을 유지하기에 충분한 중합체 고형물/슬러리의 체적을 유지하기에 충분한 체적을 제공하는 길이(l) 및 직경(d)으로 되어 있고;상기 밀봉실은 밀봉실 출구 리듀서(reducer)를 구비하고, 상기 리듀서는 불활성 희석제의 약 50 내지 100%를 제거한 후에 잔존하는 중합체 고형물의 경사각과 수평으로 동일하거나 상기 각보다 큰 각으로 경사져있고 실질적으로 곧은 측면에 의해 한정되면서, 연속 유동의 농축된 중합체 고형물/슬러리를 상기 제 1 플래쉬 탱크 출구 밀봉실로부터 제 2 전송관으로 연통시키고, 상기 제 2 전송관은 상기 연속 유동의 농축된 중합체 고형물/슬러리를 제 2 플래쉬 탱크로 연통시키고;상기 제 2 플래쉬 탱크는 상기 제 1 플래쉬 탱크보다 실질적으로 낮은 압력하에서 작동하여, 본질적으로 모든 잔존 불활성 희석제 및 단량체가 증발되어 플래쉬 탱크 오버헤드 출구를 통해 희석제 및 단량체 회수 시스템으로 연통되고, 본질적으로 건조된 중합체 고형물이 건조기/저장 탱크로 연통되도록 하는 장치.
- 제 1 항에 있어서,제 1 플래쉬 탱크가 불활성 희석제의 약 50 내지 100%를 제거한 후에 잔존하는 농축된 중합체 고형물/슬러리의 경사각과 수평으로 동일하거나 상기 각보다 큰 각으로 경사져있고 실질적으로 곧은 측면에 의해 한정된 저부를 갖는 장치.
- 제 1 항에 있어서,상기 제 1 플래쉬 탱크 출구 밀봉실이 상기 농축된 중합체의 연속적인 플러그 유동 체적을 갖고, 이때 상기 농축된 중합체/슬러리 고형물의 연속적인 플러그 유동 체적이 약 1.5 내지 약 8.0의 길이(l) 대 직경(d) 비율(l/d)을 갖는 장치.
- 제 3 항에 있어서,상기 제 1 전송관이 그 안의 상기 중합체 슬러리를 중합체의 융점보다 낮은 온도로 유지시키기에 충분한 열량을 제공할 수 있는 가열기 수단에 의해 가열되는 장치.
- 중합반응에 불활성인 탄화수소 희석제 중에서 단량체를 반응시켜 중합반응 유출물을 형성시키는 단계;상기 중합반응 유출물을 배출 밸브를 통해 제 1 전송관으로 연속적으로 배출시키는 단계;상기 제 1 전송관내의 상기 중합반응 유출물을 중합체의 융점보다 낮은 온도까지 가열하는 단계;상기 중합체 유출물을 상기 제 1 전송관을 통해 제 1 플래쉬 탱크로 연속적으로 연통시키는 단계(상기 제 1 플래쉬 탱크의 압력 및 상기 가열된 중합반응 유출물의 온도는 액체 매질의 약 50 내지 약 100%로부터 압축없이 약 65 내지 약 135℉의 온도를 갖는 유체와의 열 교환에 의해 응축가능한 증기를 생성시키기에 충분하다);압축시키지 않고서 약 65 내지 약 135℉의 온도를 갖는 유체와의 열 교환에 의해, 상기 제 1 플래슁 단계에서 수득된 증기를 연속적으로 응축시키는 단계;농축된 중합체 고형물/슬러리를 상기 제 1 플래쉬 탱크로부터 밀봉실을 통해 제 2 플래쉬 탱크로 연속적으로 배출시키되, 상기 밀봉실이 상기 밀봉실내의 압력 밀봉을 유지하기에 충분한 농축된 중합체 고형물/슬러리 체적을 유지시키는 길이(l) 및 직경(d)을 갖는 것인 단계;상기 농축된 중합체 고형물/슬러리를 밀봉실 출구 리듀서를 통해 제 2 플래쉬 탱크로 연속적으로 배출시키되, 상기 리듀서가 불활성 희석제의 약 50 내지 100%를 제거한 후 잔존하는 중합체 고형물의 경사각과 수평으로 동일하거나 상기 각보다 큰 각으로 경사져있는 실질적으로 곧은 측면에 의해 한정되는 것인 단계;상기 농축된 중합체 고형물/슬러리중의 잔여 액체 매질을, 상기 제 1 플래쉬 탱크내의 약 140 내지 약 315psia의 고압으로부터 상기 제 2 플래쉬 탱크내의 약 15 내지 약 35psia의 저압으로 연속적으로 추가 감압에 노출시키되, 상기 제 2 플래쉬 탱크의 압력 및 가열된 상기 농축된 중합체 슬러리의 온도가, 실질적으로 모든 잔여 희석제 및 단량체를 압축 및 냉각에 의해 응축가능한 증기로서 생성시키는 압력 및 온도인 단계; 및실질적으로 희석제 또는 미반응 단량체가 없는 중합체 고형물을 상기 제 2 플래쉬 탱크로부터 배출시키는 단계를 포함하는,액체 매질 중에서 중합체 슬러리를 제조하는 것을 포함하는 중합체의 제조방법.
- 제 5 항에 있어서,제 1 플래쉬 탱크가 불활성 희석제의 약 50 내지 100%를 제거한 후에 잔존하는 농축된 중합체 고형물/슬러리의 경사각과 수평으로 동일하거나 상기 각보다 큰 각으로 경사져있는 실질적으로 곧은 측면에 의해 한정된 저부를 갖는 방법.
- 제 5 항에 있어서,상기 제 1 전송관이, 상기 중합체 슬러리를 중합체 고형물의 융점보다 낮은 온도까지 가열하기에 충분한 열을 제공할 수 있는 가열 용량을 갖는 가열기 수단에 의해 가열되는 방법.
- 제 7 항에 있어서,상기 액체 희석제가 이소부탄인 방법.
- 제 5 항에 있어서,액체 매질이 반응기 유출구에서 4중량% 이상의 증가된 농도의 에틸렌을 포함하는 방법.
- 제 5 항에 있어서,중합반응 유출물의 배출 속도가 슬러리 반응기내에서 일정한 압력을 유지하는 방법.
- 제 5 항에 있어서,밀봉실내의 농축된 중합체 고형물/슬러리의 체류 시간이 5초 내지 10분인 방법.
- 제 5 항에 있어서,밀봉실내의 농축된 중합체 고형물/슬러리의 체류 시간이 10초 내지 2분인 방법.
- 제 5 항에 있어서,밀봉실내의 농축된 중합체 고형물/슬러리의 체류 시간이 15초 내지 45초인 방법.
- 제 5 항에 있어서,제 2 플래쉬 탱크내의 농축된 중합반응 유출물중의 실질적으로 잔존하는 임의의 불활성 희석제 및 미반응 단량체를 증발시켜 제거하는 방법.
- 제 1 항에 있어서,배출 밸브가 중합반응 유출물을 슬러리 반응기내의 압력을 일정하게 유지시키는 속도로 배출시키는 장치.
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US7885998P | 1998-03-20 | 1998-03-20 | |
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US8041298A | 1998-05-18 | 1998-05-18 | |
US9/080,412 | 1998-05-18 | ||
US9/081,392 | 1998-05-18 | ||
US09/081,392 US6281300B1 (en) | 1998-03-20 | 1998-05-18 | Continuous slurry polymerization volatile removal |
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-
1999
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-
2001
- 2001-11-06 US US09/992,590 patent/US6926868B2/en not_active Expired - Lifetime
-
2002
- 2002-02-19 US US10/079,226 patent/US6833415B2/en not_active Expired - Lifetime
-
2003
- 2003-02-27 US US10/375,660 patent/US6670431B2/en not_active Expired - Lifetime
- 2003-03-11 US US10/260,010 patent/US6858682B2/en not_active Expired - Lifetime
-
2004
- 2004-04-20 US US10/827,777 patent/US20040198928A1/en not_active Abandoned
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US20030130442A1 (en) | 2003-07-10 |
US20030204031A1 (en) | 2003-10-30 |
US6833415B2 (en) | 2004-12-21 |
US20040198928A1 (en) | 2004-10-07 |
US6926868B2 (en) | 2005-08-09 |
KR20010042077A (ko) | 2001-05-25 |
US6670431B2 (en) | 2003-12-30 |
US20020173598A1 (en) | 2002-11-21 |
US6858682B2 (en) | 2005-02-22 |
US20020132936A1 (en) | 2002-09-19 |
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