专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US06506283B2 Pretreatment of chips before cooking 有权
公开(公告)号：US06506283B2
公开(公告)日：2003-01-14
申请号：US09770408
申请日：2001-01-29
申请人： Kaj O. Henricson , Aki Hannu Vilpponen , Hannu Olavi Ramark , Auvo Kimmo Kettunen , C. Bertil Stromberg
发明人： Kaj O. Henricson , Aki Hannu Vilpponen , Hannu Olavi Ramark , Auvo Kimmo Kettunen , C. Bertil Stromberg
IPC分类号： D21C706
CPC分类号： D21C1/06
摘要： The strength properties of chemical cellulose pulp (particularly kraft pulp) are improved by substituting a cold impregnation soak for conventional impregnation procedures. After steaming, wood chips are soaked in an alkaline liquid at a temperature of about 80-110° C. (preferably 80-100° C., or 90-105° C.) for between one-half-72 hours (typically about 2-4 hours) at a pressure of about 0-15 bar (preferably about 1-5 bar), to dissolve at least about 8% of the wood (preferably about 10-20%) and at least about 15% of the lignin. The alkaline liquid used preferably contains sulfide (e.g. black liquor, green liquor, white liquor, or mixtures thereof), but almost any alkaline liquid having an alkali concentration of about 1.0 mole of NaOH/liter or less (typically about 0.75 m/l or less) is suitable. The wood chips are then raised to a cooking temperature of about 145-180° C. and cooked to produce the cellulose chemical pulp. There may be an intermediate step, between soaking and raising the cooking temperature, of heating the wood chips to a temperature of about 110-150° C. (preferably about 120-140° C.) for about 10-90 minutes (preferably about 10-30 minutes). Alternatively or additionally the majority of the dissolved lignin (and/or other solids) may be removed before raising the wood chips to cooking temperature. The system for treating the wood chips need only include a low pressure soaking vessel (with an associated pump or other transfer device) in addition to conventional equipment.

2. 发明授权

US06544384B2 Pretreatment of chips before cooking 有权
公开(公告)号：US06544384B2
公开(公告)日：2003-04-08
申请号：US09975984
申请日：2001-10-15
申请人： Kaj O. Henricson , Aki Hannu Vilpponen , Hannu Olavi Ramark , Auvo Kimmo Kettunen , C. Bertil Stromberg
发明人： Kaj O. Henricson , Aki Hannu Vilpponen , Hannu Olavi Ramark , Auvo Kimmo Kettunen , C. Bertil Stromberg
IPC分类号： D21C712
CPC分类号： D21C1/06
摘要： The strength properties of chemical cellulose pulp (particularly kraft pulp) are improved by substituting a cold impregnation soak for conventional impregnation procedures. After steaming, wood chips are soaked in an alkaline liquid at a temperature of about 80-110° C. (preferably 80-100° C., or 90-105° C.) for between one-half-72 hours (typically about 2-4 hours) at a pressure of about 0-15 bar (preferably about 1-5 bar), to dissolve at least about 8% of the wood (preferably about 10-20%) and at least about 15% of the lignin. The alkaline liquid used preferably contains sulfide (e.g. black liquor, green liquor, white liquor, or mixtures thereof), but almost any alkaline liquid having an alkali concentration of about 1.0 mole of NaOH/liter or less (typically about 0.75 m/l or less) is suitable. The wood chips are then raised to a cooking temperature of about 145-180° C. and cooked to produce the cellulose chemical pulp. There may be an intermediate step, between soaking and raising the cooking temperature, of heating the wood chips to a temperature of about 110-150° C. (preferably about 120-140° C.) for about 10-90 minutes (preferably about 10-30 minutes). Alternatively or additionally the majority of the dissolved lignin (and/or other solids) may be removed before raising the wood chips to cooking temperature. The system for treating the wood chips need only include a low pressure soaking vessel (with an associated pump or other transfer device) in addition to conventional equipment.

3. 发明授权

US06248208B1 Pretreatment of chips before cooking 失效
标题翻译：烹饪前预处理薯片
公开(公告)号：US06248208B1
公开(公告)日：2001-06-19
申请号：US08460723
申请日：1995-06-02
申请人： Kaj O. Henricson , Aki Hannu Vilpponen , Hannu Olavi Ramark , Auvo Kimmo Kettunen , C. Bertil Stromberg
发明人： Kaj O. Henricson , Aki Hannu Vilpponen , Hannu Olavi Ramark , Auvo Kimmo Kettunen , C. Bertil Stromberg
IPC分类号： D21C102
CPC分类号： D21C1/06
摘要： The strength properties of chemical cellulose pulp (particularly kraft pulp) are improved by substituting a cold impregnation soak for conventional impregnation procedures. After steaming, wood chips are soaked in an alkaline liquid at a temperature of about 80-110° C. (preferably 80-100° C., or alternatively 90-105° C.) for between one-half-72 hours (typically about 2-4 hours) at a pressure of about 0-15 bar (preferably about 1-5 bar), to dissolve at least about 8% of the wood (preferably about 10-20%) and at least about 15% of the lignin. The alkaline liquid used preferably contains sulfide (e.g. black liquor, green liquor, white liquor, or mixtures thereof), but almost any alkaline liquid having an alkali concentration of about 1.0 mole of NaOH/liter or less (typically about 0.75 m/l or less) is suitable. The wood chips are then raised to a cooking temperature of about 145-180° C. and cooked to produce the cellulose chemical pulp. There may be an intermediate step, between soaking and raising the cooking temperature, of heating the wood chips to a temperature of about 110-150° C. (preferably about 120-140° C.) for about 10-90 minutes (preferably about 10-30 minutes). Alternatively or additionally the majority of the dissolved lignin (and/or other solids) may be removed before raising the wood chips to cooking temperature. The system for treating the wood chips need only include a low pressure soaking vessel (with an associated pump or other transfer device) in addition to conventional equipment.
摘要翻译：化学纤维素纸浆（特别是牛皮纸浆）的强度性能通过用常规浸渍方法的冷浸渍浸渍来改善。蒸汽之后，将木屑浸入碱性液体中，温度约为80-110℃（优选80-100℃，或90-105℃）浸渍半个小时之间（通常为约2-4小时），在约0-15巴（优选约1-5巴）的压力下溶解至少约8％的木材（优选约10-20％）和至少约15％木质素。使用的碱性液体优选含有硫化物（例如黑液，绿液，白液或其混合物），但几乎任何碱性浓度为约1.0摩尔NaOH /升或更低（通常约0.75米2 /升）或少）适合。然后将木屑升至约145-180℃的烹饪温度，并煮熟以生产纤维素化学纸浆。在浸泡和提高烹饪温度之间可以有一个中间步骤，将木片加热至约110-150℃（优选约120-140℃）的温度约10-90分钟（优选约为 10-30分钟）。或者或另外，在将木屑升高至烹饪温度之前，可以除去大部分溶解的木质素（和/或其它固体）。用于处理木片的系统除了常规设备之外仅需要包括低压均热容器（具有相关联的泵或其它转移装置）。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式