会员体验
专利管家（专利管理）
工作空间（专利管理）
风险监控（情报监控）
数据分析（专利分析）
侵权分析（诉讼无效）
联系我们
交流群
官方交流：
QQ群： 891211   
微信请扫码    >>>
现在联系顾问~
下载
著录项
PDF全文
热词
    • 14. 发明申请
      US20080030538A1 ARRAY PRINTHEAD HAVING MICRO HEAT PIPES 审中-公开
    • ARRAY PRINTHEAD HAVING MICRO HEAT PIPES
    • 具有微热管的阵列打印头
    • US20080030538A1
    • 2008-02-07
    • US11868978
    • 2007-10-09
    • Nam-kyun KIM
    • Nam-kyun KIM
    • B41J29/377
    • B41J2/1408
    • An array printhead has a plurality of head chips arranged in a predetermined configuration. Each of the head chips in the array printhead includes a substrate having a surface on which are formed a plurality of heaters and a plurality of wire electrodes to supply an electric current to the plurality of heaters, a chamber layer stacked on the substrate and having a plurality of ink chambers filled with ink to be ejected, a nozzle layer stacked on the chamber layer, having a plurality of nozzles through which the ink in the ink chamber is ejected; and one or more micro heat pipe to dissipate accumulated heat outside the substrate, formed on an exposed surface of the substrate.
    • 阵列打印头具有以预定配置布置的多个头芯片。 阵列打印头中的每个头部芯片包括其表面上形成有多个加热器的基板和用于向多个加热器提供电流的多个线电极，堆叠在基板上的腔室层， 填充有要喷射的油墨的多个油墨室，堆叠在室层上的喷嘴层，具有喷射墨室中的墨的多个喷嘴; 以及一个或多个微热管，其在衬底的暴露表面上散发衬底外的累积热量。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Global Dossier Espacenet 法律信息 同族专利 专利引用
    • 17. 发明授权
      US3981686A Clarifier process for producing sodium carbonate 失效
    • Clarifier process for producing sodium carbonate
    • 澄清剂生产碳酸钠的方法
    • US3981686A
    • 1976-09-21
    • US517472
    • 1974-10-24
    • Walter Lobunez , Nam Kyun Kim , Eric Rau
    • Walter Lobunez , Nam Kyun Kim , Eric Rau
    • B01D21/01 , C01D7/24 , C01D7/26 , C01B7/00 , B01D9/02 , C01B7/14 , C01B7/24
    • B01D21/01 , C01D7/24 , C01D7/26
    • Method for clarifying a carbonate process solution containing suspended insolubles which solution is used in the preparation of crystals selected from the group consisting of sodium bicarbonate, sodium sesquicarbonate, anhydrous sodium carbonate, and sodium carbonate monohydrate, which comprises dispersing in the carbonate process solution prior to crystallization a cationic flocculating agent comprising a substituted guar gum containing one quaternary ammonium group per 2 to 12 monosaccharide units to agglomerate the suspended insolubles so the suspended insolubles will readily settle out of the carbonate process solution.This invention relates to a process for clarifying a carbonate process solution used in the preparation of sodium bicarbonate, sodium sesquicarbonate, anhydrous sodium carbonate or sodium carbonate monohydrate crystals.In Sweetwater and adjacent counties in the vicinity of Green River, Wyoming, in the Green River formation extending into Colorado and Utah, as well as in other locations, crude ore deposits in the form of trona (Na.sub.2 CO.sub.3.sup.. NaHCO.sub.3.sup.. 2H.sub.2 0), nahcolite (NaHCO.sub.3), thermonatrite (Na.sub.2 CO.sub.3.sup.. H.sub.2 0), and dawsonite (NaAlCO.sub.3 (OH).sub.2) are found at various depths ranging from about 800 to about 1800 feet underground. These ore deposits are generally either found in beds separated by layers of shale or are found dispersed in lenses along with dawsonite and shale. Most of these crude ores, besides containing recoverable sodium carbonate values, also contain some sodium sulfate, sodium chloride, different percentages of insoluble and organic matter such as kerogenaceous material containing monocarboxylic acids, dicarboxylic acids, unsaturated acids, steroids and rosin acids. A typical analysis of crude trona from which the larger pieces of shale have been removed is:______________________________________ Constituent Percent ______________________________________ Na.sub.2 CO.sub.3 43.51 NaHCO.sub.3 36.11 H.sub.2 O 13.14 Na.sub.2 SO.sub.4 0.02 NaCl 0.08 Fe.sub.2 O.sub.3 0.14 Organic Matter 0.30 Insolubles 6.70 ______________________________________ Various processes have been proposed to prepare crystals of sodium bicarbonate, sodium sesquicarbonate, anhydrous sodium carbonate or sodium carbonate monohydrate from crude ores. One process for producing sodium carbonate from crude trona, known as the monohydrate process, is disclosed in U.S. Pat. No. 2,962,348 issued to Seglin et al on Nov. 29, 1960. In this process, crude trona, after being crushed and screened, is calcined directly to form crude sodium carbonate. The crude sodium carbonate is dissolved in an aqueous solvent to form a substantially saturated solution of crude sodium carbonate containing suspended insolubles consisting essentially of large coarse particles and insoluble solids comprising colloidal particles and insoluble particles which remain in suspension for long periods of time. The crude sodium carbonate solution is then clarified and/or filtered to remove most of the suspended insolubles. The clarified and/or filtered solution is then crystallized, preferably in multiple evaporative crystallizers to form sodium carbonate monohydrate crystals. The monohydrate crystals are then calcined to produce a dense, organic-free soda ash.Another process is the sesquicarbonate process, disclosed in U.S. Pat. Nos. 2,770,524 and 2,780,520. In this process, crude trona after being crushed and screened is dissolved in a hot recirculating mother liquor carrying more sodium carbonate than sodium bicarbonate so that the sodium carbonate and sodium bicarbonate in the mined trona is dissolved congruently. The suspended insolubles consisting of large coarse particles and attached thereto insoluble solids present in the solution are first settled out of the solution in clarifiers. The remainder of the insoluble solids are then removed by filtration. Sodium sesquicarbonate is then crystallized and separated from the hot solution and calcined to sodium carbonate. The mother liquor remaining after crystallization is reheated and returned to the dissolving tanks to dissolve more trona.When producing sodium carbonate in a commercial plant designed to produce 1,400 tons of sodium carbonate per day, a flow rate of approximately 1,200 gallons per minute of a carbonate process solution is required to pass through the dissolvers, clarifiers and crystallizers. With this high flow rate, it has been difficult to produce properly clarified solutions in the clarifiers. As a result, the clarifier overflow contains high amounts of insoluble solids necessitating the use of excessive amounts of filter aids or multiple filter stations to produce clear carbonate process solutions. Excessive filter loading has reduced the length of filter cycles between cleaning operations, and requires frequent filter washings with the concomitant discard of carbonate process solutions contained in the filter. These insoluble solids comprising colloidal particles and insoluble particles which remain in suspension for long periods of time, if not removed prior to crystallization, interfere with crystal growth during crystallization. Crystal growth is modified to such an extent that when the crystals are calcined to sodium carbonate they produce a fine particle size material having limited utility which material is consequently not readily saleable.Various attempts have been made to remove the insoluble solids from carbonate process solutions. British Patent 1,211,984 and U.S. Pat. No. 3,725,014 broadly disclose adding flocculants to carbonate process solutions containing undissolved grit and mud to assist in the coagulation and settling of insoluble solids. U.S. Pat. No. 3,486,844 discloses the use of a water-soluble carbohydrate gum as a flocculating agent to obtain the desired settling rate of the insolubles. U.S. Pat. No. 3,084,026 discloses the use of hydrophylic colloids as flocculating agents to flocculate, settle and remove colloidal fines from carbonate process solutions.An improved method has been unexpectedly discovered for clarifying a carbonate process solution used in the preparation of crystals selected from the group consisting of sodium bicarbonate, sodium sesquicarbonate, anhydrous sodium carbonate, and sodium carbonate monohydrate, which comprises forming a carbonate process solution containing suspended insolubles and a material selected from the group consisting of sodium carbonate and sodium bicarbonate; dispersing in the carbonate process solution about 1 to about 20 ppm of a cationic flocculating agent comprising a substituted guar gum containing 1 quaternary ammonium group per 2 to 12 monosaccharide units; agglomerating the suspended insolubles by forming agglomerated particles of increased size and density; settling and removing the agglomerating particles from the carbonate process solution; and crystallizing the clarified carbonate process solution to produce crystals selected from the group consisting of sodium bicarbonate, sodium sesquicarbonate, anhydrous sodium carbonate and sodium carbonate monohydrate.The phrase "carbonate process solution," as used herein refers to aqueous solutions containing at least sodium carbonate and/or sodium bicarbonate, from which solution crystals of sodium bicarbonate, sodium sesquicarbonate, anhydrous sodium carbonate, and sodium carbonate monohydrate can be obtained as the stable crystal phase and can be recovered from the mother liquor. The carbonate process solution is preferably derived from trona, even though it may also be derived from other natural minerals such as nahcolite, thermonatrite, and dawsonite. The carbonate process solution is prepared by conventional procedures well known in the prior art, including the typical trona processing process discussed herein.
    • 用于澄清含有悬浮不溶物的碳酸盐工艺溶液的方法，该溶液用于制备选自碳酸氢钠，倍半碳酸钠，无水碳酸钠和碳酸钠一水合物的晶体，其包括在碳酸盐工艺溶液中分散 结晶阳离子絮凝剂，其包含每2至12个单糖单元含有一个季铵基团的取代瓜耳胶，以使悬浮的不溶物凝聚，使得悬浮的不溶物将容易地沉淀在碳酸盐处理溶液中。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Espacenet 法律信息 同族专利 专利引用
    • 19. 发明授权
      US08246135B2 Headchip and head for array type inkjet printer 失效
    • Headchip and head for array type inkjet printer
    • 阵列式喷墨打印机头和头
    • US08246135B2
    • 2012-08-21
    • US11958508
    • 2007-12-18
    • Eun-bong Han , Nam-kyun Kim
    • Eun-bong Han , Nam-kyun Kim
    • B41J29/38
    • B41J2/14072 , B41J2/1404 , B41J2202/11 , B41J2202/20
    • A headchip and a head of an array type inkjet printer. The headchip of the array type inkjet printer according to an exemplary embodiment of the present general inventive concept includes an ink supply unit which is arranged into first nozzle groups and second nozzle groups according to colors, and a power supply unit to supply power to the plurality of first and second nozzle groups in an alternate order, in which the first and second nozzle groups for one color and the first and second nozzle groups for another color closest in proximity to the one color, are connected using one power line. Accordingly, a voltage drop may be avoided when the plurality of nozzles are driven at the same time.
    • 阵列式喷墨打印机的头部和头部。 根据本发明总体构思的示例性实施例的阵列式喷墨打印机的头芯包括根据颜色被布置到第一喷嘴组和第二喷嘴组中的供墨单元，以及向多个供应单元供电的供电单元 的第一和第二喷嘴组，其中用于一种颜色的第一和第二喷嘴组以及用于另一颜色最接近于一种颜色的第一和第二喷嘴组，使用一条电力线连接。 因此，当同时驱动多个喷嘴时，可以避免电压降。
    • 基本信息 添加关注 加入工作空间 PDF全文 PDF下载 全文下载 相似专利 双屏查看 权利要求书 说明书全文 Espacenet 法律信息 同族专利 专利引用
每页展示10个专利
每页展示10个专利
每页展示20个专利
每页展示50个专利
每页展示100个专利

IPRDB

最新中国发明专利 最新美国发明专利 技术领域 专利库 专利分类库 国际专利分类库

热门服务

会员版试用 API 数据接口 找代理 知嘟嘟专利交易 排行榜 大学排行榜 专利百科

关于我们

平台介绍 战略合作 网站地图

友情链接

知嘟嘟专利交易 国家知识产权局 中国商标网

联系方式


©2019-2023 上海吉码数字技术有限公司 版权所有，并保留所有权利 沪ICP备20016256号-6 沪公网安备31011702005475号