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    • 3. 发明授权
    • Multiple stage sulfur removal process
    • 多级除硫工艺
    • US6059962A
    • 2000-05-09
    • US150451
    • 1998-09-09
    • Bruce D. AlexanderGeorge A. HuffVivek R. PradhanWilliam J. ReaganRoger H. Cayton
    • Bruce D. AlexanderGeorge A. HuffVivek R. PradhanWilliam J. ReaganRoger H. Cayton
    • C10G57/00C10G7/00C10G17/095C10G29/20C10G55/06C10G29/00
    • C10G29/205
    • 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.
    • 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。
    • 6. 发明申请
    • SEPARATION PROCESS USING AROMATIC-SELECTIVE POLYMERIC MEMBRANES
    • 使用芳族选择性聚合物膜的分离方法
    • US20080200696A1
    • 2008-08-21
    • US11428851
    • 2006-07-06
    • Jeffrey T. MillerBo ChenCraig W. CollingGeorge A. HuffBrian HenleyWilliam John KorosRaymond W. Chafin
    • Jeffrey T. MillerBo ChenCraig W. CollingGeorge A. HuffBrian HenleyWilliam John KorosRaymond W. Chafin
    • C07D209/38
    • C10G31/11B01D71/021
    • 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.
    • 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。