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公开(公告)号：US08324377B2
公开(公告)日：2012-12-04
申请号：US11262910
申请日：2005-11-01
IPC分类号： C08B11/20 , B01D37/00 , B01D33/073 , B01D33/45 , B01D33/50
CPC分类号： C08B11/22
摘要： A water-soluble cellulose ether is separated from its suspension by passing a suspension of water-soluble cellulose ether particles in water through a filter of perforated metallic or ceramic filter medium under pressure, removing the filter cake of water-soluble cellulose ether from the filter medium, and cleaning the filter medium with steam, compressed air or water under pressure. The invention enables to separate a water-soluble cellulose ether, especially having a high dissolution temperature, avoids the filter from being clogged, and extends the operative time of the filter.
摘要翻译： 通过使水溶性纤维素醚颗粒在水中的悬浮液通过穿孔的金属或陶瓷过滤介质的过滤器在压力下将其从其悬浮液中分离出来，从过滤器中除去水溶性纤维素醚的滤饼 并在压力下用蒸汽，压缩空气或水清洗过滤介质。 本发明能够分离特别是具有高溶解温度的水溶性纤维素醚，避免过滤器堵塞，并延长过滤器的操作时间。
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公开(公告)号：US20060122384A1
公开(公告)日：2006-06-08
申请号：US11262910
申请日：2005-11-01
IPC分类号： C08B11/20
CPC分类号： C08B11/22
摘要： A water-soluble cellulose ether is separated from its suspension by passing a suspension of water-soluble cellulose ether particles in water through a filter of perforated metallic or ceramic filter medium under pressure, removing the filter cake of water-soluble cellulose ether from the filter medium, and cleaning the filter medium with steam, compressed air or water under pressure. The invention enables to separate a water-soluble cellulose ether, especially having a high dissolution temperature, avoids the filter from being clogged, and extends the operative time of the filter.
摘要翻译： 通过使水溶性纤维素醚颗粒在水中的悬浮液通过穿孔的金属或陶瓷过滤介质的过滤器在压力下将其从其悬浮液中分离出来，从过滤器中除去水溶性纤维素醚的滤饼 并在压力下用蒸汽，压缩空气或水清洗过滤介质。 本发明能够分离特别是具有高溶解温度的水溶性纤维素醚，避免过滤器堵塞，并延长过滤器的操作时间。
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公开(公告)号：US06992038B2
公开(公告)日：2006-01-31
申请号：US10714954
申请日：2003-11-18
申请人： Mitsuo Narita , Masaki Tabata , Kazuhisa Hayakawa
发明人： Mitsuo Narita , Masaki Tabata , Kazuhisa Hayakawa
IPC分类号： B01J27/06 , B01J21/18 , B01J27/138 , C01B9/00 , C07C17/00
CPC分类号： C07C17/16 , B01J21/066 , B01J21/08 , B01J21/10 , B01J21/18 , B01J23/06 , B01J27/138 , B01J35/1019 , B01J37/24 , C07C17/093 , C07C19/03
摘要： The present invention is to solve the problems caused by a conventional method for producing a zinc chloride-loaded support wherein zinc chloride is adsorbed on a solid support in an aqueous solution of zinc chloride. The problems include environmental destruction caused by the treatment of a used aqueous solution of zinc chloride, corrosion to a reactor, a threat to health for workers, deterioration of zinc chloride due to deliquescence thereof, and reduction of specific surface area.
摘要翻译： 本发明是为了解决现有的氯化锌负载型载体的制造方法，其中氯化锌吸附在氯化锌水溶液中的固体载体上。 这些问题包括处理氯化锌的使用水溶液，对反应器的腐蚀，对工作人员的健康的威胁，由于其潮解导致的氯化锌的劣化以及比表面积的降低而引起的环境破坏。
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公开(公告)号：US09617350B2
公开(公告)日：2017-04-11
申请号：US11614587
申请日：2006-12-21
申请人： Mitsuo Narita , Masaki Tabata , Atsushi Yoshida , Hiroshi Umezawa
发明人： Mitsuo Narita , Masaki Tabata , Atsushi Yoshida , Hiroshi Umezawa
CPC分类号： C08B1/08 , C08B1/10 , C08B11/00 , C08B11/16 , C08B11/193
摘要： The invention is a method for efficiently preparing alkali cellulose having a uniform alkali distribution therein. More specifically, the invention is a method for preparing alkali cellulose comprising steps of bringing pulp into continuous contact with an alkali metal hydroxide solution in a bucket conveyor type contactor to generate a contact mixture, and draining the contact mixture; a method for preparing a cellulose ether comprising use of the alkali cellulose thus prepared; and an apparatus for preparing alkali cellulose comprising a bucket conveyor contactor comprising at least one inlet port for introducing pulp and an alkali metal hydroxide solution at one end and at least one outlet port for discharging a contact mixture wherein the pulp and the alkali metal hydroxide solution can be moved from one end to the other end while bringing them into contact with each other to generate the contact mixture; and a drainer for separating a cake from the contact mixture discharged from the outlet port.
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公开(公告)号：US09481738B2
公开(公告)日：2016-11-01
申请号：US13398247
申请日：2012-02-16
申请人： Mitsuo Narita
发明人： Mitsuo Narita
IPC分类号： C08B1/08 , C08B1/06 , C08B11/02 , C08B11/00 , C08B11/193
CPC分类号： C08B1/08 , C08B11/00 , C08B11/193
摘要： Provided is a method for producing cellulose ether whose aqueous solution is transparent and contains a smaller amount of water-insoluble portion. The method comprises at least the steps of: providing at least two alkali cellulose materials having different compositions, each of the materials having been prepared by bringing a pulp into contact with a solution of alkali metal hydroxide and draining; and mixing the at least two alkali cellulose materials having different compositions, wherein each weight ratio of the alkali metal hydroxide in each of the alkali cellulose materials having different compositions to a solid component in the pulp (alkali metal hydroxide/solid component in pulp) is equal to 0.4 to 2.5 times of a weight ratio of alkali metal hydroxide in the alkali cellulose obtained in the step of mixing to solid components in a sum of pulps used for preparation of the alkali cellulose materials.
摘要翻译： 本发明提供水溶液透明且含有较少量的水不溶部分的纤维素醚的制造方法。 该方法至少包括以下步骤：提供具有不同组成的至少两种碱性纤维素材料，每种材料都是通过使纸浆与碱金属氢氧化物溶液接触并排出而制备的; 并混合至少两种具有不同组成的碱性纤维素材料，其中每种具有不同组成的碱性纤维素材料中的碱金属氢氧化物与纸浆中的固体组分（碱金属氢氧化物/纸浆中的固体组分）的重量比为 等于在用于制备碱纤维素材料的纸浆中与固体组分混合的步骤中获得的碱性纤维素中碱金属氢氧化物的重量比的0.4至2.5倍。
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公开(公告)号：US20120214980A1
公开(公告)日：2012-08-23
申请号：US13398273
申请日：2012-02-16
申请人： Mitsuo Narita
发明人： Mitsuo Narita
CPC分类号： C08B1/08 , C08B1/10 , C08B11/00 , C08B11/193
摘要： Provided is a method for efficiently preparing alkali cellulose having a uniform alkali distribution. More specifically, provided are a methods for preparing alkali cellulose comprising a contact filtration step of bringing a pulp into contact with an alkali metal hydroxide solution on a moving filtration plane for vacuum filtration to collect a contact product remaining on the filtration plane, and a draining step of draining the contact product; and a method of preparing cellulose ether by using the alkali cellulose. Also provided is an apparatus for preparing alkali cellulose comprising a continuous horizontal vacuum filter type contactor.
摘要翻译： 提供了一种有效制备具有均匀碱分布的碱纤维素的方法。 更具体地说，提供了一种制备碱纤维素的方法，其包括使接触过滤步骤使纸浆与用于真空过滤的移动过滤平面上的碱金属氢氧化物溶液接触以收集残留在过滤平面上的接触产物，以及排水 排出接触产品的步骤; 以及使用碱纤维素制备纤维素醚的方法。 还提供了一种用于制备碱纤维素的设备，其包括连续的水平式真空过滤器型接触器。
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公开(公告)号：US08017766B2
公开(公告)日：2011-09-13
申请号：US11448969
申请日：2006-06-07
申请人： Mitsuo Narita , Atsushi Hatayama , Hiroshi Umezawa
发明人： Mitsuo Narita , Atsushi Hatayama , Hiroshi Umezawa
CPC分类号： C08B1/08 , C08B11/00 , C08B11/02 , C08B11/08 , C08B11/193
摘要： Provided is a method for preparing alkali cellulose having alkali distributed uniformly therein. A uniform alkali distribution in the alkali cellulose makes it possible to prepare cellulose ether which has been substituted uniformly in an etherification reaction step. The resulting cellulose ether does not contain a floating water-insoluble portion which will otherwise appear owing to insufficient substitution. More specifically, provided are a method for preparing alkali cellulose, comprising simultaneously feeding pulp powder and an aqueous alkali solution to a high speed disperser to continuously bring them into contact with each other and a method for preparing cellulose ether, comprising reacting the resulting alkali cellulose with an etherifying agent.
摘要翻译： 提供一种制备碱性分布均匀的碱纤维素的方法。 碱性纤维素中的均匀的碱分布使得可以制备在醚化反应步骤中均匀取代的纤维素醚。 得到的纤维素醚不含浮选水不溶部分，否则由于不充分的取代而出现。 更具体地说，提供了一种制备碱纤维素的方法，其包括同时向高速分散器中供给纸浆粉末和碱水溶液以使它们彼此接触，以及制备纤维素醚的方法，包括使所得的碱性纤维素 与醚化剂。
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8.发明申请公开(公告)号：US20090165971A1
公开(公告)日：2009-07-02
申请号：US12330611
申请日：2008-12-09
申请人： Mitsuo Narita
发明人： Mitsuo Narita
IPC分类号： D21C3/02
CPC分类号： C08B1/08 , C08B11/00 , C08B11/193
摘要： Provided is a method for preparing cellulose ether which is transparent as dissolved in water and has low water-insoluble content. More specifically, provided are a method for preparing alkali cellulose comprising a contact step of bringing a pulp sheet having a pore volume of 1.0 ml/g or greater, or chips into which the pulp sheet has been converted, into contact with an alkali metal hydroxide solution to obtain an alkali cellulose reaction mixture, and a drain step of draining the alkali cellulose reaction mixture; and a method for preparing water-soluble cellulose ether comprising a step of reacting the alkali cellulose with an etherifying agent.
摘要翻译： 本发明提供一种制备纤维素醚的方法，所述纤维素醚溶解在水中是透明的并且具有低水不溶性含量。 更具体地说，提供了一种制备碱纤维素的方法，其包括将孔体积为1.0ml / g以上的纸浆片或将纸浆片转化成的片与碱金属氢氧化物接触的接触步骤 溶液以获得碱纤维素反应混合物，以及排出碱纤维素反应混合物的排出步骤; 以及制备水溶性纤维素醚的方法，包括使碱纤维素与醚化剂反应的步骤。
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9.发明授权Method for reducing pulp to powder and process for the production of a cellulose ether 有权减少纸浆粉末的方法和生产纤维素醚的方法公开(公告)号：US06884883B1
公开(公告)日：2005-04-26
申请号：US09605815
申请日：2000-06-28
申请人： Yukio Shima , Mitsuo Narita , Atsushi Hatayama
发明人： Yukio Shima , Mitsuo Narita , Atsushi Hatayama
CPC分类号： C08B1/06
摘要： Pulp is ground by means of a vertical roller mill. The average particle diameter of the resulting powdered pulp is adjusted to 20-300 μm. The powdered pulp thus obtained is used as a starting material for the production of cellulose ethers.
摘要翻译： 纸浆通过立式辊磨机研磨。 将所得粉末纸浆的平均粒径调节至20-300μm。 将由此获得的粉末纸浆用作生产纤维素醚的起始材料。
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公开(公告)号：US09534061B2
公开(公告)日：2017-01-03
申请号：US11615437
申请日：2006-12-22
申请人： Mitsuo Narita , Masaki Tabata , Atsushi Yoshida , Hiroshi Umezawa
发明人： Mitsuo Narita , Masaki Tabata , Atsushi Yoshida , Hiroshi Umezawa
IPC分类号： C08B1/08 , C08B1/10 , C08B11/00 , C08B11/193
CPC分类号： C08B1/08 , C08B1/10 , C08B11/193
摘要： The invention is an efficient method for preparing alkali cellulose having the low water content and a uniform alkali distribution therein. More specifically, the invention is a method for continuously preparing alkali cellulose comprising steps of bringing pulp into continuous contact with an alkali metal hydroxide solution to generate a contact mixture and then draining the contact mixture by a centrifugal separator. The invention also includes a method for preparing cellulose ether comprising a step of etherifying the alkali cellulose.
摘要翻译： 本发明是制备具有低含水率和均匀的碱分布的碱纤维素的有效方法。 更具体地说，本发明是一种连续制备碱纤维素的方法，包括使纸浆与碱金属氢氧化物溶液连续接触以产生接触混合物，然后通过离心分离器排出接触混合物的步骤。 本发明还包括一种制备纤维素醚的方法，其包括使碱性纤维素醚化的步骤。
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