SEPARATION PROCESS USING AROMATIC-SELECTIVE POLYMERIC MEMBRANES
    4.
    发明申请
    SEPARATION PROCESS USING AROMATIC-SELECTIVE POLYMERIC MEMBRANES 审中-公开
    使用芳族选择性聚合物膜的分离方法

    公开(公告)号:US20080200696A1

    公开(公告)日:2008-08-21

    申请号:US11428851

    申请日:2006-07-06

    IPC分类号: C07D209/38

    CPC分类号: C10G31/11 B01D71/021

    摘要: Processes are disclosed for production of value-added products from fluid admixtures of hydrocarbon compounds at least one of which is an aromatic hydrocarbon compound, by means of one or more devices using perm-selective polymeric membranes. More particularly, processes of the invention comprise separations using aromatic-selective polymeric materials comprising long-chain polymeric molecules in which recurring amide and imide linkages are part of the main polymer chain. Processes of the invention advantageously employ aromatic-selective membranes to separate an aromatic enriched stream from gaseous and/or liquid mixtures comprising one or more aromatic hydrocarbon compounds thereby producing a stream comprising the remaining compounds which may include alkenes and/or alkanes containing 3 or more carbon atoms, and/or alicyclic hydrocarbons. Processes of the invention are particularly useful for recovery of meta-xylene and para-xylene products from liquid mixtures even containing ethylbenzene as well as the three xylene isomers.

    摘要翻译: 公开了用于通过使用烫发选择性聚合物膜的一种或多种装置从其中至少一种为芳族烃化合物的烃化合物的流体混合物生产增值产品的方法。 更具体地,本发明的方法包括使用包含长链聚合物分子的芳族选择性聚合物材料的分离,其中重复酰胺和酰亚胺键是主要聚合物链的一部分。 本发明的方法有利地采用芳香族选择性膜从包含一种或多种芳族烃化合物的气体和/或液体混合物中分离富含芳烃的物流,从而产生包含剩余化合物的物流,其可包括含有3个或更多个的烯烃和/或烷烃 碳原子和/或脂环烃。 本发明的方法特别可用于从含有乙苯的液体混合物以及三种二甲苯异构体中回收间二甲苯和对二甲苯产物。

    Multiple stage sulfur removal process
    5.
    发明授权
    Multiple stage sulfur removal process 有权
    多级除硫工艺

    公开(公告)号:US6059962A

    公开(公告)日:2000-05-09

    申请号:US150451

    申请日:1998-09-09

    CPC分类号: C10G29/205

    摘要: A product of reduced sulfur content is produced in a multiple stage process from a feedstock which is comprised of a mixture of hydrocarbons and includes sulfur-containing aromatic compounds as unwanted impurities. The first stage involves: (1) subjecting the feedstock to alkylation conditions which are effective to convert a portion of the impurities to higher boiling sulfur-containing products, and (2) separating the resulting products by fractional distillation into a lower boiling fraction and a higher boiling fraction. The lower boiling fraction is comprised of hydrocarbons and is of reduced sulfur content relative to the feedstock. The higher boiling fraction is comprised of hydrocarbons and contains unconverted sulfur-containing aromatic impurities and also the higher boiling sulfur-containing products. Each subsequent stage involves: (1) subjecting the higher boiling fraction from the preceding stage to alkylation conditions which are effective to convert at least a portion of its content of sulfur-containing aromatic compounds to higher boiling sulfur-containing products, and (2) separating the resulting products by fractional distillation into a lower boiling hydrocarbon fraction and a higher boiling fraction which contains higher boiling sulfur-containing alkylation products. The total hydrocarbon product of reduced sulfur content from the process is comprised of the lower boiling fractions from various stages.

    摘要翻译: 减少硫含量的产物在多级工艺中由来自烃的混合物的原料产生,并且包括作为不需要的杂质的含硫芳族化合物。 第一阶段包括:(1)使原料经受有效将一部分杂质转化成高沸点含硫产物的烷基化条件,和(2)通过分馏将所得产物分离成较低沸点馏分和 较高的沸点。 低沸点馏分由烃组成,相对于原料硫含量降低。 较高沸点馏分由烃组成,含有未转化的含硫芳族杂质和较高沸点含硫产物。 每个后续阶段包括:(1)将来自前一阶段的较高沸点馏分经受烷基化条件,这些条件有效地将其含硫芳香族化合物的至少一部分转化成高沸点含硫产物,和(2) 通过分馏将所得产物分离成低沸点烃馏分和含较高沸点含硫烷基化产物的较高沸点馏分。 来自该方法的硫含量降低的总烃产物由来自不同阶段的低沸点馏分组成。

    Sulfur removal process
    7.
    发明授权

    公开(公告)号:US06602405B2

    公开(公告)日:2003-08-05

    申请号:US09489371

    申请日:2000-01-21

    IPC分类号: C10G4502

    CPC分类号: C10G69/12

    摘要: A product of reduced sulfur content is produced from an olefin-containing hydrocarbon feedstock which includes sulfur-containing impurities. The feedstock is contacted with an olefin-modification catalyst in a reaction zone under conditions which are effective to produce an intermediate product which has a reduced amount of olefinic unsaturation relative to that of the feedstock as measured by bromine number. The intermediate product is then contacted with a hydrodesulfurization catalyst in the presence of hydrogen under conditions which are effective to convert at least a portion of its sulfur-containing impurities to hydrogen sulfide.

    Hydrocarbon conversion process
    8.
    发明授权
    Hydrocarbon conversion process 有权
    烃转化过程

    公开(公告)号:US6111159A

    公开(公告)日:2000-08-29

    申请号:US203019

    申请日:1998-12-01

    摘要: A method is provided for putting a fresh bed of solid phosphoric acid catalyst into service to catalyze a hydrocarbon conversion process. The method involves establishing hydrocarbon conversion conditions of temperature and pressure in the catalyst bed while it is immersed in a hydrocarbon liquid which is substantially free of water and compounds which can yield water upon contact with the catalyst. Thereafter, the catalyst bed is used to catalyze the conversion of a hydrocarbon feedstock which contains a minor amount of a hydrating agent which is effective to provide a desired level of catalyst hydration. The method permits the catalyst to be rapidly brought to an optimum level of activity for the specific hydrocarbon conversion process.

    摘要翻译: 提供了一种将新鲜的固体磷酸催化剂床用于催化烃转化过程的方法。 该方法包括在浸入基本上不含水的烃液体中和在与催化剂接触时可产生水的化合物时,在催化剂床中建立温度和压力的烃转化条件。 此后,催化剂床用于催化含有少量水合剂的烃原料的转化,其有效提供所需水平的催化剂水合。 该方法允许催化剂快速地达到特定烃转化过程的最佳活性水平。

    Ionic Polymer Membranes
    10.
    发明申请
    Ionic Polymer Membranes 审中-公开
    离子聚合物膜

    公开(公告)号:US20080223785A1

    公开(公告)日:2008-09-18

    申请号:US11685461

    申请日:2007-03-13

    IPC分类号: B01D61/00

    摘要: Compositions and processes are disclosed for economical separation of fluid mixtures. Broadly, the present invention discloses ionic polymer compositions that are useful for perm-selective membrane separations. More particularly, ionic polymers of the invention comprise a plurality of repeating structural units having as a constituent part thereof organic ionic moieties consisting of nitrogen containing anions and/or cations. In the form of non-porous membranes, ionic polymers of the invention facilitate recovery of purified organic and inorganic products from fluid mixtures by means of perm-selective membrane separations. The present invention also provides methods for forming the ionic polymers, for example by treating selected nitrogen-containing organic polymers with acids, or treating a polymeric material comprising a plurality of carboxylate groups with an amine. Ionic polymer compositions of the invention are particularly useful for simultaneous recovery of a permeate product of an increased concentration, and a desired non-permeate stream, from a fluid mixture containing at least two compounds of different boiling point temperatures.

    摘要翻译: 公开了用于经济分离流体混合物的组合物和方法。 广泛地,本发明公开了可用于烫发选择性膜分离的离子聚合物组合物。 更具体地,本发明的离子聚合物包含多个重复结构单元,其具有由含有阴离子和/或阳离子的氮组成的有机离子部分的组成部分。 以无孔膜的形式,本发明的离子聚合物便于通过选择性膜分离从流体混合物中回收纯化的有机和无机产物。 本发明还提供了形成离子聚合物的方法,例如通过用酸处理选定的含氮有机聚合物,或用胺处理包含多个羧酸酯基团的聚合物材料。 本发明的离子聚合物组合物特别可用于从含有至少两种不同沸点温度的化合物的流体混合物中同时回收浓度增加的渗透产物和期望的非渗透物流。