发明名称 |
FREMGANGSMAATE FOR AA FJERNE KLORIDER VED PROSESSER FOR FREMSTILLING AV CELLULOSE |
摘要 |
A process is provided for the separation of sodium chloride in the sodium chemicals recovery stage of sodium-based pulp manufacturing processes so as to maintain a low sodium chloride content in the recycled sodium chemicals, comprising the steps of treating an aqueous sodium chloride-containing solution with carbon dioxide gas, thereby forming a saturated sodium bicarbonate solution; precipitating sodium values of the solution as sodium bicarbonate while retaining sodium chloride in solution; separating such sodium bicarbonate; withdrawing the residual aqueous sodium chloride-containing solution from the process; and recycling the separated sodium bicarbonate. |
申请公布号 |
NO773884(A) |
申请公布日期 |
1978.05.18 |
申请号 |
NO19770003884 |
申请日期 |
1977.11.14 |
申请人 |
MO OCH DOMSJOE AB, |
发明人 |
HILLSTROEM, PER AXEL RUNE,;SONDELL, KENT IVAR, |
分类号 |
D21C11/00;(IPC1-7):21C/ |
主分类号 |
D21C11/00 |
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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