发明名称 |
Production of concentrated aqueous solutions of ferric chloride |
摘要 |
Concentrated aqueous solutions of ferric chloride, directly useful as flocculating agents in a variety of water treatments, are prepared by (a) digesting iron with a dilute aqueous solution of hydrochloric acid until such acid has essentially been consumed and thereby producing an aqueous solution of ferrous chloride; (b) reacting chlorine with such aqueous solution of ferrous chloride, in the presence of a recycled aqueous solution of ferric chloride; (c) decompressing the step (b) reaction product solution to vaporize water therefrom, thereby concentrating same; and (d) recycling a fraction of the decompressed liquid phase to step (b) and recovering remaining fraction as final product aqueous solution of ferric chloride.
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申请公布号 |
US5422091(A) |
申请公布日期 |
1995.06.06 |
申请号 |
US19930032182 |
申请日期 |
1993.03.15 |
申请人 |
ATOCHEM |
发明人 |
CLAIR, RENE;GALLET, ALAIN |
分类号 |
C01G49/10;(IPC1-7):C01G49/00 |
主分类号 |
C01G49/10 |
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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