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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 Lignin containing liquid is withdrawn from a central portion of the digester and passed through flash tanks and ultimately for lignin and alcohol recovery.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

US5788812A Method of recovering furfural from organic pulping liquor 失效
标题翻译：从有机制浆液中回收糠醛的方法
公开(公告)号：US5788812A
公开(公告)日：1998-08-04
申请号：US488306
申请日：1995-06-07
申请人： Richard C. Agar , Jairo H. Lora , Malcolm Cronlund , Chih Fae Wu , Gopal C. Goyal , Stephen R. Winner , Mikhail N. Raskin , Raphael Katzen , Ron LeBlanc
发明人： Richard C. Agar , Jairo H. Lora , Malcolm Cronlund , Chih Fae Wu , Gopal C. Goyal , Stephen R. Winner , Mikhail N. Raskin , Raphael Katzen , Ron LeBlanc
IPC分类号： C07D307/50 , D21C3/20 , D21C11/00
CPC分类号： D21C3/20 , C07D307/50 , D21C11/0007
摘要： This invention provides for the recovery of lignin and other by-products from the pulping of fibrous plant material. In accordance with this invention, solvents and filtrates are recovered and recycled for reuse. This results in significant solvent and energy savings. Filtrates from the bleaching and delignification of the pulp are recycled for reuse in pulping, separation, and recovery of lignin and other by-products which results in significant energy savings and mitigation if not the elimination of pollution typically associated with bleaching. This invention also relates to products derived from the process and apparatus for carrying out the process. Lignins of various molecular weights and by-products of the pulping process are also recovered. The lignins are precipitated in high yields and at a high rate from a black liquor produced by pulping wood at high temperature and pressures. As a by-product of this process a purified furfural product is recovered. This furfural may be recycled for use in the recovery of the low molecular weight lignin of this process.
摘要翻译：本发明提供从纤维植物材料的制浆中回收木质素和其它副产物。根据本发明，回收溶剂和滤液并循环再利用。这导致显着的溶剂和能量节省。来自纸浆漂白和脱木质素的滤液被再循环用于制浆，分离和回收木质素和其它副产物，如果不消除通常与漂白相关的污染，则可以显着节能和减轻。本发明还涉及从用于实施该方法的方法和装置得到的产物。各种分子量的木质素和制浆过程的副产物也被回收。木质素以高产率和高速率从由高温和高压制浆木浆产生的黑液中沉淀出来。作为该方法的副产物，回收了纯化的糠醛产物。该糠醛可以再循环用于回收该方法的低分子量木质素。

3. 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。

4. 发明授权

US5196460A Rubber compositions containing high purity lignin derivatives 失效
标题翻译：包含高纯度木质素衍生物的橡胶组合物
公开(公告)号：US5196460A
公开(公告)日：1993-03-23
申请号：US530179
申请日：1990-05-29
申请人： Jairo H. Lora , Michael J. Trojan , William H. Klingensmith
发明人： Jairo H. Lora , Michael J. Trojan , William H. Klingensmith
IPC分类号： C08K5/3432 , C08K5/34 , C08L21/00 , C08L57/02 , C08L61/04 , C08L61/06 , C08L97/00
CPC分类号： C08L21/00 , C08L97/005 , C08L2205/02 , C08L57/02 , C08L61/00 , C08L93/00
摘要： A tackifier composition for use in rubber compounds is disclosed. The tackifier comprises a pure lignin with a water solubility of up to 1% by weight and a carbohydrate level of less than 50% by weight. In another embodiment of the invention, the pure lignin functions as both a tackifier and an antioxidant. In yet another preferred embodiment of the invention, the improved tackifier produces synergistic results when blended with a commercial tackifier, and the antioxidant likewise yields synergistic results when mixed with a commercial antioxidant.

5. 发明授权

US4764596A Recovery of lignin 失效
标题翻译：回收木质素
公开(公告)号：US4764596A
公开(公告)日：1988-08-16
申请号：US940460
申请日：1986-12-11
申请人： Jairo H. Lora , Raphael Katzen , Malcolm Cronlund , Chih F. Wu
发明人： Jairo H. Lora , Raphael Katzen , Malcolm Cronlund , Chih F. Wu
IPC分类号： C07D307/50 , D21C11/00 , C07G1/00 , D21C3/20
CPC分类号： C08H6/00 , C07D307/50 , D21C11/0007 , D21C11/0042
摘要： Lignin is precipitated in high yields and at high rates from a black liquor produced by pulping wood at high temperatures and pressures with an aqueous lower aliphatic alcohol solvent. The lignin is precipitated by diluting the black liquor with water and an acid to form a solution with a pH of less than about 3, an alcohol content of less than about 30% by volume and a temperature of less than about 75.degree. C. The precipitated lignin, when subsequently dried, is in the form of a powder which requires little or no crushing to convert it into a fine uniform size suitable for use without further significant processing.
摘要翻译：木质素以高产率和高速率从由高温和高压的木浆制成的黑液以低级脂族醇溶剂水溶液沉淀。通过用水和酸稀释黑液来沉淀木质素，形成pH小于约3，醇含量小于约30体积％，小于约75℃的溶液。当随后干燥时，沉淀的木质素是粉末形式，其需要很少或不破碎以将其转化成适合使用的细微均匀尺寸而不进一步显着加工。

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