发明名称 |
Process for purifying phosphoric acid and for preparing phosphoric acid |
摘要 |
<p>A process for purifying phosphoric acid includes removing volatile components from phosphoric acid rich in impurities to form a crude phosphoric acid liquid substantially free of volatile components; heating the crude phosphoric acid liquid to a temperature above 250° C in order to decompose phosphoric acid in the crude phosphoric acid liquid and generate gaseous phosphoric anhydride; and introducing the gaseous phosphoric anhydride into water or a dilute phosphoric acid aqueous solution in order to hydrate the gaseous phosphoric anhydride to form phosphoric acid.</p> |
申请公布号 |
EP1614656(A1) |
申请公布日期 |
2006.01.11 |
申请号 |
EP20040019216 |
申请日期 |
2004.08.12 |
申请人 |
HSU, YUNG HSIUNG;HSU, SAGE |
发明人 |
HSU, YUNG HSIUNG;HSU, SAGE |
分类号 |
C01B25/234;C01B25/20;C01B25/22 |
主分类号 |
C01B25/234 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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