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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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公开(公告)号：US09371399B2
公开(公告)日：2016-06-21
申请号：US13398393
申请日：2012-02-16
申请人： Mitsuo Narita
发明人： Mitsuo Narita
IPC分类号： C08B1/08 , C08B11/08 , C08B11/20 , C08B11/193 , C08B11/00
CPC分类号： C08B1/08 , C08B11/00 , C08B11/193
摘要： A degree of polymerization of cellulose ether is accurately controlled, and quality and a manufacturing process of the cellulose ether are stabilized. There is provided a method for producing depolymerized alkali cellulose having a degree of polymerization controlled, comprising at least a step of depolymerizing, in the presence of an oxygen-containing gas flow, alkali cellulose obtained by bringing a pulp into contact with an alkali solution, while measuring feeding and discharging amounts of oxygen in the oxygen-containing gas flow. There is also provided a method for producing cellulose ether, comprising at least a step of adding an etherifying agent to the depolymerized alkali cellulose having a degree of polymerization controlled.
摘要翻译： 纤维素醚的聚合度被精确控制，纤维素醚的质量和制造过程稳定。 提供了一种制备聚合度控制的解聚碱纤维素的方法，该方法至少包括在含氧气流的存在下，将通过使纸浆与碱溶液接触而获得的碱性纤维素解聚的步骤， 同时测量含氧气体流中的氧气的进料和排出量。 还提供了一种生产纤维素醚的方法，其至少包括将醚化剂加入到具有聚合度控制的解聚的碱纤维素中的步骤。
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公开(公告)号：US08853388B2
公开(公告)日：2014-10-07
申请号：US11615355
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： C08B11/00 , C07H1/00 , C08B1/08 , C08B11/193 , C08B1/10
CPC分类号： C08B1/08 , C08B1/10 , C08B11/00 , 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 pipe type contactor to generate a contact mixture and draining the contact mixture; a method for preparing cellulose ether comprising use of the alkali cellulose; and an apparatus for preparing alkali cellulose, comprising a pipe type contactor having at least one inlet port at one end thereof for introducing pulp and an alkali metal hydroxide solution, and an outlet port at the other end for discharging a contact mixture, wherein the pulp and the alkali metal hydroxide solution are moved from one end to the other end while bringing them into contact with each other, and a drainer for separating a cake from the contact mixture discharged from the contactor.
摘要翻译： 本发明是一种有效制备碱分布均匀的碱纤维素的方法。 更具体地，本发明是一种制备碱纤维素的方法，包括使纸浆与管式接触器中的碱金属氢氧化物溶液连续接触以产生接触混合物并排出接触混合物的步骤; 一种制备纤维素醚的方法，包括使用碱纤维素; 以及一种用于制备碱纤维素的设备，包括管式接触器，其在其一端具有用于引入纸浆和碱金属氢氧化物溶液的至少一个入口端口和另一端的出口，用于排出接触混合物，其中纸浆 并且碱金属氢氧化物溶液在使它们彼此接触的同时从一端移动到另一端，以及用于从接触器排出的接触混合物中分离滤饼的排水器。
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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：US20120214984A1
公开(公告)日：2012-08-23
申请号：US13398369
申请日：2012-02-16
申请人： Mitsuo Narita
发明人： Mitsuo Narita
CPC分类号： C08B1/08 , C08B11/00 , C08B11/193
摘要： When a combination of pulps having different alkali metal hydroxide solution absorption rates is as a raw material, contact conditions such as a contact temperature and a contact time have to be changed frequently, depending on the absorption rate of pulps currently processed, thereby causing a problem of reduced productivity. For solving the problem, provided is a method for producing alkali cellulose, comprising at least the steps of: bringing two or more types of pulps having different alkali metal hydroxide solution absorption rates into contact with an alkali metal hydroxide solution to obtain a contact product; and draining the contact product, wherein the highest absorption rate is not more than 4.0 times as fast as the lowest absorption rate.
摘要翻译： 当具有不同的碱金属氢氧化物溶液吸收速率的纸浆的组合作为原料时，接触条件如接触温度和接触时间必须根据当前处理的纸浆的吸收速率而频繁地变化，从而导致问题 降低生产力。 为了解决这个问题，提供了一种制备碱纤维素的方法，其至少包括以下步骤：将具有不同碱金属氢氧化物溶液吸收速率的两种或更多种类型的纸浆与碱金属氢氧化物溶液接触以获得接触产物; 并排出接触产物，其中最高吸收速率不超过最低吸收速率的4.0倍。
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公开(公告)号：US20120214983A1
公开(公告)日：2012-08-23
申请号：US13398247
申请日：2012-02-16
申请人： Mitsuo Narita
发明人： Mitsuo Narita
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。 该方法至少包括提供具有不同组成的至少两种碱性纤维素材料的步骤，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：US20070144692A1
公开(公告)日：2007-06-28
申请号：US11614717
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 , C08B11/193
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 rotary feeder type contactor to generate a contact mixture, and draining the contact mixture; and a method for preparing cellulose ether comprising use of the alkali cellulose thus prepared; an apparatus for preparing alkali cellulose, comprising a rotary feeder comprising a cyclic housing comprising an inlet port and an outlet port, a cyclic contact drum being circularly rotatable along the housing in the housing and comprising a plurality of filter cells arranged in a circumferential direction, and a filtrate-discharging tube being disposed in a diameter direction inside of the cyclic contact drum and collecting the filtrate which has passed the filter, and a drainer for draining a cake discharged from the contactor.
摘要翻译： 本发明是一种有效制备碱分布均匀的碱纤维素的方法。 更具体地说，本发明是一种制备碱纤维素的方法，包括使纸浆与旋转给料器型接触器中的碱金属氢氧化物溶液连续接触以产生接触混合物并排出接触混合物的步骤; 以及制备纤维素醚的方法，其包括使用如此制备的碱纤维素; 一种制备碱纤维素的设备，包括一种旋转进料器，包括一个包括入口和出口的循环壳体，循环接触鼓沿壳体沿圆周方向可旋转，并且包括沿圆周方向布置的多个过滤器单元， 以及滤液排出管，其设置在所述环状接触鼓的内部的直径方向，并收集已经通过所述过滤器的滤液，以及用于排出从所述接触器排出的滤饼的排水器。
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公开(公告)号：US06181064B2
公开(公告)日：2001-01-30
申请号：US09310344
申请日：1999-05-12
申请人： Mitsuo Narita
发明人： Mitsuo Narita
IPC分类号： H01J6102
CPC分类号： H01J61/82 , H01J61/366
摘要： A high pressure discharge lamp in which, in the silica glass which comprises the hermetically sealed portion on the cathode side, fractures originating from the contact area with the cathode are prevented from propagating as in a high pressure discharge lamp of the direct current operating type which has: a discharge vessel of silica glass in which opposite sides an arc tube portion are each joined to a respective hermetically sealed portion; a metal foil is located in each of the hermetically sealed portions; a supply lead is attached in each the hermetically sealed portion with an inner end of the supply lead being connected to a respective one of the metal foils and an outer end projecting outwardly from the discharge vessel; an anode and a cathode are each attached in one of the hermetically sealed portions and have a base which is connected to one of the metal foils and a tip which projects into the arc tube portion; by the outer surface of the cathode-side hermetically sealed portion being surrounded by a conductive component in the area of the cathode, and by the area of the outer surface in which the conductive component is located having microscopically small projecting glass surfaces which do not contact the conductive component.
摘要翻译： 一种高压放电灯，其中在包括阴极侧的气密部分的二氧化硅玻璃中，防止源自与阴极的接触区域的裂缝如直流工作型高压放电灯那样传播， 具有：二氧化硅玻璃的放电容器，其中相对侧的电弧管部分分别连接到相应的气密部分; 金属箔位于每个气密密封部分中; 在每个密封部分中连接有供应引线，供应引线的内端连接到相应的一个金属箔和从放电容器向外突出的外端; 阳极和阴极各自附着在气密密封部分中的一个中，并且具有连接到金属箔之一的基部和突出到电弧管部中的尖端; 通过阴极侧密封部分的外表面被阴极区域中的导电部件包围，并且导电部件所在的外表面的区域具有不接触的微小的突出的玻璃表面 导电组件。
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公开(公告)号：US4769576A
公开(公告)日：1988-09-06
申请号：US909671
申请日：1986-09-22
CPC分类号： H01J61/18 , H01J65/044
摘要： A metal vapor discharge lamp includes a light-emitting tubing in which a halogen and iron at least 0.005 mg per cc of the internal volume of the light-emitting tubing are filled together with mercury and a rare gas in amounts sufficient to retain a discharge. Magnesium is additionally filled in at a magnesium-to-iron ratio of 1/40-2/3 in terms of gram atom number so as to prevent iron from depositing on the inner wall of the light-emitting tubing and forming a thin film thereon.
摘要翻译： 金属蒸汽放电灯包括发光管，其中将卤素和铁至少0.005mg / cc的发光管的内部体积与汞和稀有气体一起填充，其量足以保持放电。 另外以克原子数以镁/铁比为1 / 40-2 / 3填充镁，以防止铁沉积在发光管的内壁上并在其上形成薄膜 。
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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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