发明名称 |
Method of inhibiting scaling in black liquor evaporators |
摘要 |
A method of inhibiting calcium carbonate scaling in a multi-stage evaporation plant of black liquor by heat-treating calcium-containing liquor includes a first stage wherein the calcium-containing liquor is heated to about 110-145 DEG C. with direct contact with the heating medium; a second stage wherein the liquor is maintained at this temperature in a retention tank for 1-20 minutes to reduce the amount of calcium in the liquor by precipitating calcium carbonate; and a third stage wherein the heat-treated liquor is evaporated for combustion.
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申请公布号 |
US6090240(A) |
申请公布日期 |
2000.07.18 |
申请号 |
US19980026562 |
申请日期 |
1998.02.20 |
申请人 |
AHLSTROM MACHINERY OY |
发明人 |
ENEBERG, HENRIK;KAILA, JARMO;KIISKILA, ERKKI |
分类号 |
B01D1/26;B01D3/34;C02F1/04;D21C;D21C11/00;D21C11/10;(IPC1-7):B01D1/26 |
主分类号 |
B01D1/26 |
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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