Process for purification of methyl methacrylate using molecular sieve membranes
    1.
    发明授权
    Process for purification of methyl methacrylate using molecular sieve membranes 有权
    使用分子筛膜纯化甲基丙烯酸甲酯的方法

    公开(公告)号:US09487469B2

    公开(公告)日:2016-11-08

    申请号:US13963677

    申请日:2013-08-09

    IPC分类号: C07C67/56

    CPC分类号: C07C67/56 C07C69/54

    摘要: A method for separating the components of a mixture containing methyl methacrylate, water, and methanol in which the mixture is dehydrated in a first stage membrane unit, producing a dehydrated mixture. Methanol in the dehydrated mixture is removed in a second stage membrane unit, producing a retentate stream containing methyl methacrylate and substantially no said methanol.

    摘要翻译: 一种分离含有甲基丙烯酸甲酯,水和甲醇的混合物的组分的方法,其中混合物在第一级膜单元中脱水,产生脱水混合物。 脱水混合物中的甲醇在第二级膜单元中除去,产生含有甲基丙烯酸甲酯并基本上不含所述甲醇的滞留物流。

    High flux and selectivity SAPO-34 membranes for CO2/CH4separations
    3.
    发明授权
    High flux and selectivity SAPO-34 membranes for CO2/CH4separations 失效
    用于CO2 / CH4分离的高通量和选择性SAPO-34膜

    公开(公告)号:US08409326B2

    公开(公告)日:2013-04-02

    申请号:US11746191

    申请日:2007-05-09

    摘要: SAPO-34 membranes and methods for their preparation and use are described. The SAPO-34 membranes are prepared by contacting at least one surface of a porous membrane support with a synthesis gel. The Si/Al ratio of the synthesis gel can be from 0.3 to 0.15. SAPO-34 crystals are optionally applied to the surface of the support prior to synthesis. A layer of SAPO-34 crystals is formed on at least one surface of the support. SAPO-34 crystals may also form in the pores of the support. SAPO-34 membranes of the invention can have improved selectivity for certain gas mixtures, including mixtures of carbon dioxide and methane.

    摘要翻译: 描述了SAPO-34膜及其制备和使用的方法。 通过使多孔膜载体的至少一个表面与合成凝胶接触来制备SAPO-34膜。 合成凝胶的Si / Al比可以为0.3〜0.15。 在合成之前,SAPO-34晶体任选地施加到载体的表面。 在载体的至少一个表面上形成一层SAPO-34晶体。 SAPO-34晶体也可以形成在载体的孔中。 本发明的SAPO-34膜可以对某些气体混合物(包括二氧化碳和甲烷的混合物)具有改进的选择性。

    Oxygen enrichment using small-pore silicoaluminophosphate membranes
    8.
    发明授权
    Oxygen enrichment using small-pore silicoaluminophosphate membranes 有权
    使用小孔硅铝磷酸盐膜的氧气富集

    公开(公告)号:US08221525B2

    公开(公告)日:2012-07-17

    申请号:US12837563

    申请日:2010-07-16

    IPC分类号: B01D53/22 B01D67/00 B01D71/02

    摘要: A method of oxygen enrichment in which a gaseous mixture containing O2 molecules and N2 molecules is provided to a feed side of a SAPO molecular sieve, oxygen enrichment membrane having pore sizes suitable for discriminating between O2 molecules and N2 molecules, resulting in selective transport of the O2 molecules through the membrane to a permeate side of the membrane. Also disclosed is a method for producing the membrane.

    摘要翻译: 一种富氧方法,其中将含有O 2分子和N 2分子的气态混合物提供给SAPO分子筛的进料侧,具有适于区分O 2分子和N 2分子的孔径的富氧膜,导致选择性运输 O2分子通过膜到膜的渗透侧。 还公开了一种膜的制造方法。

    OXYGEN ENRICHMENT USING SMALL-PORE SILICOALUMINOPHOSPHATE MEMBRANES
    9.
    发明申请
    OXYGEN ENRICHMENT USING SMALL-PORE SILICOALUMINOPHOSPHATE MEMBRANES 有权
    使用小孔硅烷基磷酸盐膜的氧气富集

    公开(公告)号:US20120012001A1

    公开(公告)日:2012-01-19

    申请号:US12837563

    申请日:2010-07-16

    IPC分类号: B01D53/22 B01D67/00

    摘要: A method of oxygen enrichment in which a gaseous mixture containing O2 molecules and N2 molecules is provided to a feed side of a SAPO molecular sieve, oxygen enrichment membrane having pore sizes suitable for discriminating between O2 molecules and N2 molecules, resulting in selective transport of the O2 molecules through the membrane to a permeate side of the membrane. Also disclosed is a method for producing the membrane.

    摘要翻译: 一种富氧方法,其中将含有O 2分子和N 2分子的气态混合物提供给SAPO分子筛的进料侧,具有适于区分O 2分子和N 2分子的孔径的富氧膜,导致选择性运输 O2分子通过膜到膜的渗透侧。 还公开了一种膜的制造方法。