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1. 发明授权

US5865948A Method for steaming comminuted cellulosic fibrous material during continuous solvent pulping 失效
标题翻译：在连续溶剂制浆期间蒸粉碎的纤维素纤维材料的方法
公开(公告)号：US5865948A
公开(公告)日：1999-02-02
申请号：US473194
申请日：1995-06-07
申请人： Jairo H. Lora , John Patrick Maley , Brian F. Greenwood , Joseph R. Phillips , David J. Lebel
发明人： Jairo H. Lora , John Patrick Maley , Brian F. Greenwood , Joseph R. Phillips , David J. Lebel
IPC分类号： D21C3/18 , D21C1/02 , D21C3/20 , D21C3/22 , D21C3/24 , D21C7/00 , D21C7/14 , D21C9/02 , D21C9/04 , D21C11/00
CPC分类号： D21C1/02 , D21C11/00 , D21C3/20 , D21C3/24 , D21C7/00 , D21C9/02 , D21C9/04
摘要： A continuous solvent pulping process is practiced with oxygen free gas (e.g. nitrogen) purges of all major treatment vessels during the time when the process is arrested or terminated. The wood chips or other cellulosic fibrous material to be pulped is steamed in a first horizontal steaming zone at pressure of about 10-20 psi, and then in a second horizontal steaming zone at a pressure of about 20-75 psi. The first and second zones are isolated by a low pressure feeder. Steam is introduced into the material in the second steaming zone to flow cocurrently with it. Gases, including vaporized solvent (e.g. ethanol or other alcohol) are vented from the steaming zones, and solvent is added to the steamed material prior to feeding to a high pressure feeder. The high pressure feeder introduces the material into the top of a single digesting vessel, liquid and chips being separated at the top of the digester vessel without mechanical means that could cause a spark. Lignin containing liquid is withdrawn from a central portion of the digester and passed through flash tanks and ultimately for lignin and alcohol recovery. A recirculating screen and system is disposed between the central extraction portion and the top of the digester vessel. A portion of the liquid removed for recirculation is instead passed to lignin recovery, while fresh solvent containing liquid is added to the rest of the recirculated liquid.
摘要翻译：连续溶剂制浆过程在所有主要处理容器的无氧气体（如氮气）清洗过程被捕获或终止的时间内进行。要制浆的木屑或其他纤维素纤维材料在约10-20psi压力的第一卧式蒸汽区中蒸汽，然后在约20-75psi压力的第二卧式蒸汽区中蒸汽。第一和第二区域由低压进料器隔离。蒸汽被引入第二蒸汽区中的材料以与其并流流动。气体，包括蒸发的溶剂（例如乙醇或其他醇）从蒸汽区域排出，并且在进料到高压进料器之前将溶剂加入到蒸汽材料中。高压给料器将材料引入单个消化容器的顶部，液体和碎屑在蒸煮器容器的顶部分离，而不会引起火花的机械装置。含木质素的液体从消化器的中心部分排出并通过闪蒸罐，最终用于木质素和酒精回收。再循环筛网和系统设置在中央提取部分和蒸煮器容器的顶部之间。取代用于再循环的一部分液体被转移到木质素回收中，同时将含有新鲜溶剂的液体加入剩余的再循环液体中。

2. 发明授权

US5681427A Apparatus for treating pulp produced by solvent pulping 失效
标题翻译：用于处理通过溶剂制浆生产的纸浆的设备
公开(公告)号：US5681427A
公开(公告)日：1997-10-28
申请号：US488245
申请日：1995-06-07
申请人： Jairo H. Lora , John Patrick Maley , Brian F. Greenwood , Joseph R. Phillips , David J. Lebel
发明人： Jairo H. Lora , John Patrick Maley , Brian F. Greenwood , Joseph R. Phillips , David J. Lebel
IPC分类号： D21C3/18 , D21C1/02 , D21C3/20 , D21C3/22 , D21C3/24 , D21C7/00 , D21C7/14 , D21C9/02 , D21C9/04 , D21C11/00 , D21C9/06
CPC分类号： D21C1/02 , D21C11/00 , D21C3/20 , D21C3/24 , D21C7/00 , D21C9/02 , D21C9/04
摘要： An apparatus and process for the solvent pulping and washing of pulp using vessels purged of oxygen free gas when the process is arrested or terminated. The washing is accomplished by first continuously passing the pulp to a pressure diffuser, then to a first multi-stage drum displacer washer, and then to a second multi-stage drum displacer. In the pressure diffuser the lignin is washed out of the pulp, utilizing as wash liquid a mixture of solvent and water having a solvent concentration equal to or higher than that required by the extraction process within the digester, and at a pressure at least about 350 psi. The pressure in the second and third stages is lower, and water is the wash liquid in the third stage. Alcohol can be recovered from the spent wash liquid of the first wash stage, so that all but about ten gallons or less of alcohol per ton of pulp is recovered.
摘要翻译：一种用于溶剂制浆和清洗浆料的设备和方法，该方法是在该过程被捕获或终止时清除无氧气体的容器。洗涤通过首先将纸浆连续地通过压力扩散器，然后到达第一多级鼓置换器垫圈，然后到第二多级鼓式置换器来实现。在压力扩散器中，木质素从纸浆中洗出，利用溶剂和水的混合物作为洗涤液体，其溶剂浓度等于或高于蒸煮器内提取过程所需的溶剂浓度，并且在至少约350的压力下 psi。第二阶段和第三阶段的压力较低，第三阶段的水是洗涤液体。可以从第一洗涤阶段的废清洗液中回收酒精，从而回收每吨纸浆中除了约十加仑或更少的酒精之外的所有物质。

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