JP4655518B2 - ポリオレフィン製造プロセスの停止方法 - Google Patents
ポリオレフィン製造プロセスの停止方法 Download PDFInfo
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- JP4655518B2 JP4655518B2 JP2004180717A JP2004180717A JP4655518B2 JP 4655518 B2 JP4655518 B2 JP 4655518B2 JP 2004180717 A JP2004180717 A JP 2004180717A JP 2004180717 A JP2004180717 A JP 2004180717A JP 4655518 B2 JP4655518 B2 JP 4655518B2
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Description
(2)低圧の処理設備を設けて、反応液を移送する。
急速移送弁4を開けて液相重合槽1の反応液を気相重合槽2へ急速移送するに際して、液相重合槽1およびまたは気相重合槽2に反応停止剤および/または反応抑制剤を投入してもよい。
液相重合槽1の圧力は気相重合槽2の圧力まで低下し、温度制御をしなければ、温度は溶媒の沸点まで低下する。液相重合槽1の圧力調整装置が止まっていれば、液相重合槽1に残っている反応液の一部が蒸発することで液相重合槽1の圧力は保たれ、液相重合槽1から気相重合槽2への移送速度は、蒸発の速度に応じて低下する。そのときは、液相重合槽1を加圧して残っている反応液を気相重合槽2に移送してもよい。加圧のためには溶媒に不溶の不活性ガスが好ましいが、原料または溶媒をガス化したものでもよい。また、液相重合槽1の攪拌手段を停止した場合、反応液中の固体は沈降するので、液相重合槽1に追加の原料または溶媒を供給して固体の濃度を希釈してもよい。
プロピレンを重合中に液相重合槽から気相重合槽へ反応液を急速移送する実験を下記のように行った。
6…循環ポンプ、7…コンプレッサー、8…循環ガスライン
Claims (3)
- 液相重合槽と気相重合槽との組合わせを有するポリオレフィン製造プロセスにおいて、該液相重合槽と少なくとも1つの気相重合槽との間に急速移送弁を設け、該プロセスの停止または緊急停止を行うに際し、液相重合槽から気相重合槽への急速移送弁を介してポリオレフィンを含む反応液を、液相重合槽より低圧に保たれた気相重合槽へ移送することを特徴とするポリオレフィン製造プロセスの停止方法。
- 液相重合槽が液化モノマーを用いるバルク重合を行う請求項1記載のポリオレフィン製造プロセスの停止方法。
- 液相重合槽がループ型反応器である請求項1または2記載のポリオレフィン製造プロセスの停止方法。
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JP2004180717A JP4655518B2 (ja) | 2004-06-18 | 2004-06-18 | ポリオレフィン製造プロセスの停止方法 |
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JP4655518B2 true JP4655518B2 (ja) | 2011-03-23 |
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Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5520131B2 (ja) * | 2010-05-14 | 2014-06-11 | 住友化学株式会社 | 液相重合反応器内における重合反応を停止させる方法及び重合装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5118272A (ja) * | 1974-06-14 | 1976-02-13 | Huels Chemische Werke Ag | |
JPS534087A (en) * | 1976-07-02 | 1978-01-14 | Chisso Corp | Method of treating sefely vinyl chloride gas in emergency of polymerizer |
US4740550A (en) * | 1986-06-18 | 1988-04-26 | Shell Oil Company | Multistage copolymerization process |
JP2002506468A (ja) * | 1997-06-05 | 2002-02-26 | ソルヴェイ ポリオレフィンズ ユーロープ ベルギウム | プロピレンポリマーの連続製法 |
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5118272A (ja) * | 1974-06-14 | 1976-02-13 | Huels Chemische Werke Ag | |
JPS534087A (en) * | 1976-07-02 | 1978-01-14 | Chisso Corp | Method of treating sefely vinyl chloride gas in emergency of polymerizer |
US4740550A (en) * | 1986-06-18 | 1988-04-26 | Shell Oil Company | Multistage copolymerization process |
JP2002506468A (ja) * | 1997-06-05 | 2002-02-26 | ソルヴェイ ポリオレフィンズ ユーロープ ベルギウム | プロピレンポリマーの連続製法 |
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