发明授权
US3928529A Process for recovering HCl and Fe{hd 2{b O{HD 3 {L from pickle liquor
失效
回收HCl和Fe的方法（hd 2 {b O {来自酸洗液的HD 3 {L
- 专利标题： Process for recovering HCl and Fe{hd 2{b O{HD 3 {L from pickle liquor
- 专利标题（中）： 回收HCl和Fe的方法（hd 2 {b O {来自酸洗液的HD 3 {L
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申请号： US33989073申请日： 1973-03-09
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公开(公告)号： US3928529A公开(公告)日： 1975-12-23
- 发明人: GRULKE CARL A
- 申请人： UNION CARBIDE CORP
- 专利权人： Union Carbide Corp
- 当前专利权人： Union Carbide Corp
- 优先权： US33989073 1973-03-09; US17144171 1971-08-13
- 主分类号： C01B7/03
- IPC分类号： C01B7/03 ; C01G49/06 ; C23G1/36 ; C01B7/08
摘要：
Regeneration process for spent pickle liquor comprising the oxidizing of an aqueous solution of ferrous chloride and hydrochloric acid in the presence of activated carbon to form aqueous ferric chloride which in turn is hydrolyzed to about 232*C. on a graphite hearth to yield vaporized hydrochloric acid and iron oxide.
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