发明名称 |
PROCESS FOR PRODUCTION OF POLYISOCYANATE AND EQUIPMENT FOR PRODUCTION THEREOF |
摘要 |
A polyisocyanate production method that can allow effective use of hydrogen chloride produced secondarily in a polyisocyanate production process, while allowing reduction of environmental burdens, and a polyisocyanate production system for performing the polyisocyanate production method. After chlorine is allowed to react with carbon monoxide to produce carbonyl chloride in a carbonyl chloride producing reactor 2, the carbonyl chloride produced in the carbonyl chloride producing reactor 2 is allowed to react with polyamine in an isocyanate producing reactor 3 to produce polyisocyanate. Then, after hydrochloric gas produced secondarily in the isocyanate producing reactor 3 is purified in a hydrogen chloride purifying column 4, the purified hydrochloric gas is oxidized in a hydrogen chloride oxidizing reactor 6 to produce chlorine. Thereafter, the chlorine thus produced is supplied to the carbonyl chloride producing reactor 2 from a chlorine resupply line 8, so that it is allowed to react with carbon monoxide to produce carbonyl chloride. |
申请公布号 |
EP1857438(A4) |
申请公布日期 |
2010.05.12 |
申请号 |
EP20060728766 |
申请日期 |
2006.03.08 |
申请人 |
MITSUI CHEMICALS, INC. |
发明人 |
SASAKI, MASAAKI;NAITO, TAKAO;HIRATA, FUMIAKI;SARUWATARI, MASATO;TAKAHASHI, HIROFUMI;MAEBA, KOUJI;IMAIZUMI, TSUGIO;SAEKI, TAKUYA;YAMAGUCHI, TAKASHI;TERADA, KOUICHIROU |
分类号 |
C07C263/10;C07C265/14 |
主分类号 |
C07C263/10 |
代理机构 |
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代理人 |
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