发明名称 |
Oblekt massa med mycket låg COD |
摘要 |
A pulp product that has a low COD is comprised of an unbleached pulp that is soaked and washed in alkaline water for a sufficient time so that the COD after soaking and washing is less than or equal to 3.0kg/1000 kg of dry pulp . The pulp is produced by repetitively soaking and washing an unbleached pulp in alkaline water that is never allowed to drop below pH 7.0. The pulp is soake d and washed for a total of at least 400 minutes at an elevated temperature to produce the pulp product that has a low COD. |
申请公布号 |
SE0402583(D0) |
申请公布日期 |
2004.10.26 |
申请号 |
SE20040002583 |
申请日期 |
2004.10.26 |
申请人 |
WEYERHAEUSER CO |
发明人 |
MICHAEL D VRBANAC;BRIAN WESTER;BRIAN E DENNIS;PETER K LAU;JULIE A REIMER;DAVID W BICKELL |
分类号 |
C04B16/02;D21C3/02;D21C9/02;(IPC1-7):D21C9/02 |
主分类号 |
C04B16/02 |
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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