发明名称 |
Process for producing a pulp suitable for papermaking from nonwood fibrous materials |
摘要 |
A process for producing a pulp suitable for papermaking from a nonwood fiber source material. Representative nonwood fiber source materials include corn stover and wheat straw. The process includes the steps of providing a nonwood fiber source material; digesting the nonwood fiber source material with an alkaline pulping solution at at least about atmospheric pressure; reducing the pH of the nonwood fiber source material to an acidic pH with an acid solution; treating the nonwood fiber source material having an acidic pH with ozone; and treating the nonwood fiber source material with a bleaching solution to form a papermaking pulp.
|
申请公布号 |
US6302997(B1) |
申请公布日期 |
2001.10.16 |
申请号 |
US19990385154 |
申请日期 |
1999.08.30 |
申请人 |
NORTH CAROLINA STATE UNIVERSITY;HURTERCONSULT INCORPORATED |
发明人 |
HURTER ROBERT W.;BYRD, JR. MEDWICK V. |
分类号 |
D21C3/02;D21C5/00;D21C9/10;D21C9/153;(IPC1-7):D21C9/147 |
主分类号 |
D21C3/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|