发明名称 |
Process for manufacturing phosphoric acid |
摘要 |
A wet phosphoric acid production process comprising the attack on phosphate rock by sulfuric acid and phosphoric acid utilizing a vacuum cooling and a recirculation of the reaction slurry. The flow rates of the materials within the system are maintained at a level, relative to the rate of withdrawal of the slurry from the system, of between 300% and 4000% for the cyclic flow, between 2000% and 4000% for the vacuum cooling flow and between 500% and 2200% for the local agitation flow. Control of the flow rates according to factors including the rock analysis allows maximization of the yield of H3PO4.
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申请公布号 |
US4298583(A) |
申请公布日期 |
1981.11.03 |
申请号 |
US19770852614 |
申请日期 |
1977.11.18 |
申请人 |
DAVY POWERGAS, INC. |
发明人 |
DAVISTER, ARMAND L.;HOUGHTALING, SAMUEL V. |
分类号 |
C01B25/225;C01B25/22;C01B25/228;(IPC1-7):C01F11/46 |
主分类号 |
C01B25/225 |
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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