公开(公告)号：US5746886A

公开(公告)日：1998-05-05

申请号：US491893

申请日：1995-07-14

申请人： .ANG.ke Backlund ,  Lars Stigsson

发明人： .ANG.ke Backlund ,  Lars Stigsson

IPC分类号： D21C11/04 ,  D21C11/06 ,  D21C11/12

CPC分类号： D21C11/125 ,  D21C11/04 ,  D21C11/063 ,  Y02P70/24

摘要： The present invention relates to a method for producing pulp cooked under alkaline conditions, in which method cellulose-containing material is brought into contact, in a digester, with an alkaline cooking liquor containing dissolved potassium and sodium compounds, with used spent cooking liquor being separated off from the cellulose-containing material and withdrawn for the recovery of energy and chemicals, wherein: a) The molar ratio, calculated as K/K+Na, between potassium and sodium in a withdrawn spent cooking liquor exceeds 0.25. b) The withdrawn spent cooking liquor is concentrated with respect to its content of solid material and is subjected to partial oxidation in a reactor, resulting in the formation of a, combustible gas which is withdrawn from the reactor. c) oxygen-containing gas is supplied to the reactor in order to support the partial oxidation. d) The operating temperature in the reactor is adjusted to between 400.degree.-1200.degree. C. e) The combustible gas, which is obtained in association with the partial oxidation and which contains entrained solid and/or liquid alkali metal compounds, is separated from the major part of its content of alkali and used for the production of useful energy. f) The alkali metal compounds which have been separated off from the process gas are dissolved in liquid, which liquid is used either wholly or in part for preparing cooking liquor.

摘要翻译： PCT No.PCT / SE94 / 00028 Sec。 371 1995年7月14日第 102（e）日期1995年7月14日PCT 1994年1月18日PCT PCT。 出版物WO94 / 17240 日期：1994年8月4日本发明涉及一种在碱性条件下煮熟的纸浆的方法，其中使用含有溶解的钾和钠化合物的碱性蒸煮液在消化器中使含纤维素材料接触，使用 废弃的蒸煮液从含纤维素的材料中分离出并取出以回收能量和化学品，其中：a）在抽出的废蒸煮液中钾和钠之间的K / K + Na计算的摩尔比超过0.25 。 b）将抽出的废弃蒸煮液相对于其固体物质的含量浓缩，并在反应器中进行部分氧化，从而形成从反应器中排出的可燃气体。 c）向反应器供应含氧气体以支持部分氧化。 d）将反应器中的操作温度调节至400-1200℃。e）与部分氧化相关并含有夹带的固体和/或液体碱金属化合物获得的可燃气体与 其主要部分含量为碱，用于生产有用能源。 f）从工艺气体中分离的碱金属化合物溶解在液体中，该液体全部或部分用于制备蒸煮液。

公开(公告)号：US5919337A

公开(公告)日：1999-07-06

申请号：US436341

申请日：1995-05-18

申请人： Sven-Erik Olsson ,  Stig Andtbacka ,  Finn Jacobsen ,  .ANG.ke Backlund ,  Johanna Svanberg

发明人： Sven-Erik Olsson ,  Stig Andtbacka ,  Finn Jacobsen ,  .ANG.ke Backlund ,  Johanna Svanberg

IPC分类号： D21C3/24 ,  D21C7/00 ,  D21C7/12 ,  D21C7/14 ,  D21C9/02 ,  D21C9/04

CPC分类号： D21C9/04 ,  D21C3/24 ,  D21C7/00 ,  D21C7/14

摘要： The present invention relates to a digester for continuous cooking, under elevated pressure and temperature, of fibre material in a vertical digester (1), where fibre material and cooking liquid are fed into the top of the digester, used cooking liquor is drawn off from at least one digester screen arrangement (1D) between the top and the bottom of the digester, and fibre material is fed out from the bottom of the digester, it being possible to maintain the temperature in the cooking zone immediately above the digester screen arrangement (1B) at essentially the same temperature level as the remaining cooking zone or cooking zones of the digester.

摘要翻译： PCT No.PCT / SE93 / 00978 Sec。 371日期：1995年7月27日 102（e）日期1995年7月27日PCT 1993年11月16日PCT公布。 公开号WO94 / 11567 日期：1994年5月26日本发明涉及一种在垂直蒸煮器（1）中在高温和高温下连续烹饪的纤维材料的蒸煮器，其中纤维材料和烹饪液体被送入蒸煮器的顶部，使用的蒸煮液 从消化器的顶部和底部之间的至少一个蒸煮器屏幕布置（1D）抽出，并且纤维材料从蒸煮器的底部送出，可以将烹饪区域中的温度保持在紧邻上游 蒸煮器筛网布置（1B）与蒸煮器的剩余烹饪区域或蒸煮区基本相同的温度水平。