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。

    Method for loading and storing gas in nano-valved sorbents
    2.
    发明授权
    Method for loading and storing gas in nano-valved sorbents 有权
    在纳瓦阀吸附剂中加载和储存气体的方法

    公开(公告)号:US09249934B2

    公开(公告)日:2016-02-02

    申请号:US14262161

    申请日:2014-04-25

    摘要: Adsorbent pellets coated with an outer nano-porous layer can be loaded with gas at loading pressures of 250 bar or greater, enabling a much higher loading than can be achieved at low pressures. The nano-porous layer provides nano-valves which can be sealed with an adsorbate such as ethanol or a hydrocarbon to close the nano-valves. The closed nano-valves maintain the high loading pressure inside the adsorbent pellets, and thus maintain the gas loading, during storage of the loaded nano-valved adsorbent pellets at much lower pressure. To release the gas, the nano-porous layer can be heated to a temperature sufficient to vaporize the adsorbate and open the nano-valves.

    摘要翻译: 涂覆有外部纳米多孔层的吸附颗粒可以在250巴或更大的负载压力下装载气体,使得能够在低压下实现高得多的载荷。 纳米多孔层提供纳米阀,可以用诸如乙醇或烃的吸附物密封以封闭纳米阀。 封闭的纳米阀门在吸附剂颗粒内部保持高的负载压力,从而在负载的纳米阀吸附剂颗粒在非常低的压力下储存期间保持气体负载。 为了释放气体,可以将纳米多孔层加热至足以蒸发被吸附物并打开纳米阀的温度。

    Nano-channel enhanced composite membranes
    3.
    发明授权
    Nano-channel enhanced composite membranes 有权
    纳米通道增强复合膜

    公开(公告)号:US09005345B2

    公开(公告)日:2015-04-14

    申请号:US13622434

    申请日:2012-09-19

    摘要: An apparatus for gas separation a composite gas separation membrane having a gas separation layer disposed on a surface of a porous support. The gas separation layer has a plurality of gas permeable inorganic nano-particles embedded in a dense polymer forming substantially only discrete gas transport channels through the dense polymer layer, wherein direct fluid communication is provided from a feed side of the composite gas separator membrane to the porous support. Preferably, the inorganic nano-particles are porous molecular sieve particles, such as SAPO-34, ALPO-18, and Zeolite Y nano-particles.

    摘要翻译: 一种用于气体分离的装置,其具有设置在多孔载体的表面上的气体分离层的复合气体分离膜。 气体分离层具有多个气体可渗透的无机纳米颗粒,其嵌入致密聚合物中,基本上仅形成通过致密聚合物层的不连续的气体输送通道,其中从复合气体分离器膜的进料侧提供直接流体连通 多孔支撑。 优选地,无机纳米颗粒是多孔分子筛颗粒,例如SAPO-34,ALPO-18和沸石Y纳米颗粒。

    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。

    High flux and selectivity SAPO-34 membranes for CO2/CH4separations
    10.
    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。