利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

126 条记录 (耗时 0.014 秒)

    Process for production of an ether-rich additive
    11.
    发明授权
    Process for production of an ether-rich additive 失效
    生产富含醚的添加剂的方法

    公开(公告)号：US5210326A

    公开(公告)日：1993-05-11

    申请号：US847194

    申请日：1992-03-06

    申请人： Marco A. Marquez ,  Jose C. Gonzalez ,  Victor J. Degouveia ,  Francisco Yanez

    发明人： Marco A. Marquez ,  Jose C. Gonzalez ,  Victor J. Degouveia ,  Francisco Yanez

    IPC分类号： C07C41/06

    CPC分类号： C07C41/06 ,  C07C41/36

    摘要： A process for the production of an ether-rich additive for gasoline, and more particularly, the production of MTBE, TAME and mixtures thereof from light hydrocarbon streams comprising passing the light hydrocarbon stream, preferably from an FCC feedstock, through a superactivated alumina medium so as to remove nitrogen compounds, mercaptan and water prior to contacting the feedstock with a catalyst under etherification process conditions. The present invention further includes a process for regenerating the spent superactivated alumina mediums used for purifying the feedstock employed in the process for the production of ether-rich additives for gasoline.

    摘要翻译： 一种生产用于汽油的富醚添加剂的方法，更具体地说，从轻质烃流中生产MTBE，TAME及其混合物，包括使轻质烃流优选由FCC原料通过超活化氧化铝介质 在醚化过程条件下，在将原料与催化剂接触之前除去氮化合物，硫醇和水。 本发明还包括一种用于再生生产用于汽油的富醚添加剂的方法中所用的原料的用过的超活化氧化铝介质的方法。

    Process for preparing alkyl tert-alkyl ethers
    13.
    发明授权
    Process for preparing alkyl tert-alkyl ethers 失效
    烷基叔烷基醚的制备方法

    公开(公告)号：US5030768A

    公开(公告)日：1991-07-09

    申请号：US502585

    申请日：1990-03-30

    申请人： Michael S. Chen ,  Shivaji Sircar

    发明人： Michael S. Chen ,  Shivaji Sircar

    IPC分类号： B01J20/18 ,  B01J31/08 ,  C07B61/00 ,  C07C41/01 ,  C07C41/36 ,  C07C43/04

    CPC分类号： C07C41/36 ,  C07C41/06

    摘要： A process for preparing an alkyl-tert-alkyl ether wherein an olefin having a double bond on a tertiary carbon atom and a primary alcohol are reacted in the presence of a catalyst under conditions sufficient to produce an azeotropic alcohol/ether/hydrocarbon mixture containing the alkyl-tert-alkyl ether. The azeotropic alcohol/ether/hydrocarbon mixture is subjected to a cyclic liquid phase adsorption process sequence to selectively remove the alcohol. The resulting non-azeotropic ether/hydrocarbon stream can then be easily separated by distillation to provide the desired alkyl-tert-alkyl ether product and a hydrocarbon product. The cyclic adsorption process employed to separate the alcohol from the ether/hydrocarbon mixture comprises introducing the alcohol/ether/hydrocarbon mixture into a plurality of adsorption colums containing an alcohol selective adsorbent, wherein each respective absorption column undergoes successive steps of adsorption and desorption.

    Purification of polyoxyalkylene glycols
    14.
    发明授权
    Purification of polyoxyalkylene glycols 失效
    聚氧亚烷基二醇的纯化

    公开(公告)号：US4994627A

    公开(公告)日：1991-02-19

    申请号：US494353

    申请日：1990-03-16

    申请人： Michael Cuscurida ,  Arthur J. Faske

    发明人： Michael Cuscurida ,  Arthur J. Faske

    IPC分类号： C07C41/36 ,  C08G65/30

    CPC分类号： C08G65/30 ,  C07C41/36

    摘要： A feedstock selected from the group consisting of polyoxyethylene glycols, polyoxypropylene glycols and monoalkyl ethers thereof having molecular weights of about 200 to about 5,000 and contaminated with more than about 100 ppm of alkali metal or alkaline earth metal ions is purified by bringing said feedstock into contact with a basic ion exchange resin in the presence of about 2 to about 10 wt. % of water, based on the weight of the feedstock at a temperature of about 25.degree. to about 100.degree. C. and a pressure of about 0 to about 100 psig. for a period of time sufficient to lower the impurity level of said ions by at least about 90% to a level of less than about 100 ppm,the basic ion exchange resin being a fully hydrated boron specific basic styrene-divinyl benzene ion exchange resin in the free base form having an apparent density of about 40 to 45 lbs. per cubic foot.

    摘要翻译： 选自分子量为约200至约5,000并且被大于约100ppm的碱金属或碱土金属离子污染的聚氧乙烯二醇，聚氧丙烯二醇和单烷基醚的原料通过使所述原料接触而被纯化 在约2至约10重量％的存在下使用碱性离子交换树脂。 基于在约25℃至约100℃的温度和约0至约100psig的压力下原料的重量的水。 足以使所述离子的杂质水平降低至少约90％至低于约100ppm的水平的时间段，所述碱性离子交换树脂是完全水合的硼特异性碱性苯乙烯 - 二乙烯基苯离子交换树脂， 游离碱形式具有约40至45磅的表观密度。 每立方英尺

    Method of isolating target substance using membrane and apparatus therefor
    20.
    发明授权
    Method of isolating target substance using membrane and apparatus therefor 有权
    使用膜分离靶物质的方法及其设备

    公开(公告)号：US08900458B2

    公开(公告)日：2014-12-02

    申请号：US12531993

    申请日：2008-03-19

    申请人： Yasuhiro Tateishi

    发明人： Yasuhiro Tateishi

    IPC分类号： B01D61/00 ,  C02F1/44 ,  B01D61/14 ,  B01D61/12 ,  C07B63/00 ,  B01D61/02 ,  B01D61/22 ,  C07C41/36 ,  B01D65/02

    CPC分类号： B01D61/027 ,  B01D61/12 ,  B01D61/145 ,  B01D61/22 ,  B01D65/02 ,  B01D2315/12 ,  B01D2315/16 ,  B01D2317/022 ,  C07B63/00 ,  C07C41/36 ,  C07C43/135

    摘要： A separation apparatus using a membrane for diafiltration, which provides precise fractionation of a target substance by monitoring and regulating permeability of the target substance based on measurement values and analytical values indicating separation status, such as physical values and concentration of a permeate liquid, a circulating liquid and an internal circulating liquid in a membrane device. A diafiltration process including adding a cleaning liquid to an treating liquid which contains multiple target substances and extracting a target substance into the permeate liquid supplied from a membrane separation apparatus to fractionate the target substance from other target substances remaining in a residual liquid. In the present invention, permeability of the target substance is controlled by regulating or controlling at least one operating parameter, such as a flow rate of the permeate liquid, operating pressure and temperature of the membrane separation apparatus, and concentration and amount of a circulating liquid, to a predetermined range based on a separation status index and/or a progress index of a separating operation.

    摘要翻译： 一种使用膜进行渗滤的分离装置，其通过基于测量值监测和调节目标物质的渗透性，提供目标物质的精确分级，以及表示分离状态的分析值，例如渗透液的物理值和浓度，循环 液体和膜装置中的内部循环液体。 1.一种渗滤方法，其特征在于，在含有多种目标物质的处理液中添加清洗液，将从所述膜分离装置供给的渗透液中提取目标物质，从残留液中残留的其他目标物质中分离出目标物质。 在本发明中，通过调节或控制渗透液的流量，膜分离装置的工作压力和温度，循环液的浓度和量的至少一个操作参数来控制目标物质的渗透性 ，基于分离状态指标和/或分离操作的进度指标达到预定范围。