发明名称 |
Recovery of hydrochloric acid from spent - pickle liquor |
摘要 |
Spent HCl pickle liquor contng. FeCl2 is contacted with cation exchange resin in H form to replace Fe++ by H+; the exchanger is regenerated by contacting with a complex sulphonic acid soln. (reaction product of SO2, H2O and water-soluble aldehyde or ketone) to replace Fe++ by H+ and give ferrous sulphonate effluent which is heated to recover regenerant aldehyde or ketone and SO2 for recycling, leaving ferrous sulphite as residue. |
申请公布号 |
BE751220(A1) |
申请公布日期 |
1970.11.30 |
申请号 |
BED751220 |
申请日期 |
1970.05.29 |
申请人 |
THE DOW CHEMICAL CY, MIDLAND, COUNTY OF MIDLAND, STATE OF MICHIGAN (E.U.A.), |
发明人 |
L.J. LEFEVRE |
分类号 |
B01J49/00;C01B7/00;C01B7/01;C01G49/00;C23G1/36 |
主分类号 |
B01J49/00 |
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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