发明名称 |
SYSTEM AND METHOD FOR RECLAIMING REJECTS IN SULFITE PULPING |
摘要 |
Systems and methods are provided for refining and reclaiming rejects in a sulfite pulping process. Wood chips and sulfite cooking liquor are provided to a digester for delignification. The slurry obtained from the digester is screened to obtain a reject portion containing sulfite rejects. The sulfite rejects are disintegrated in a refiner, such that the rejects are refined to a freeness suitable for digestion in a subsequent re-cooking step. Refined rejects are then returned to the digester for re-cooking with wood chips. |
申请公布号 |
CA2824076(A1) |
申请公布日期 |
2014.02.21 |
申请号 |
CA20132824076 |
申请日期 |
2013.08.20 |
申请人 |
UNIVERSITY OF NEW BRUNSWICK |
发明人 |
NI, YONGHAO;KANG, GUOJUN |
分类号 |
D21C11/02;D21C3/06;D21D5/02 |
主分类号 |
D21C11/02 |
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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