发明名称 |
Process for preventing scaling of heat transfer surfaces |
摘要 |
Methods for producing chemical pulp from lignocellulose-containing material in processes for kraft pulp production are disclosed including charging the lignocellulose-containing material to a digester, initially treating the lignocellulose-containing material with an impregnation liquor, and then treating the impregnated lignocellulose-containing material with hot liquor and displacing calcium-containing spent liquor from the digester during that treatment, heating and cooking the heated lignocellulose-containing material to produce cooked lignocellulose-containing material and cooking liquor and displacing the cooking liquor from the digester using at least a portion of the displaced calcium-containing spent liquor. |
申请公布号 |
AU7666500(A) |
申请公布日期 |
2001.05.10 |
申请号 |
AU20000076665 |
申请日期 |
2000.10.04 |
申请人 |
VALMET CHEMICAL PULPING OY |
发明人 |
ASKO PAAKKI;PAIVI UUSITALO;MIKAEL SVEDMAN |
分类号 |
D21C3/02;D21C1/00;D21C3/22;D21C11/10 |
主分类号 |
D21C3/02 |
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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