Petrochemical feedstock purification
    11.
    发明授权
    Petrochemical feedstock purification 失效
    石化原料净化

    公开(公告)号:US07569741B2

    公开(公告)日:2009-08-04

    申请号:US11412244

    申请日:2006-04-26

    CPC classification number: C07C15/46 C07C13/28 C07C15/44 C07C2601/16

    Abstract: Methods and systems for petrochemical feedstream purification are described herein. The methods generally include providing a petrochemical feedstock, wherein the petrochemical feedstock includes a concentration of polar impurities, contacting the petrochemical feedstock with a washing agent to remove at least a portion of the polar impurities therefrom, separating the washing agent from the petrochemical feedstock to form a purified feedstock and passing the purified feedstock to a petrochemical process. In one embodiment, the petrochemical feedstock includes benzene and the washing agent includes water.

    Abstract translation: 本文描述了石油化学原料流净化的方法和系统。 所述方法通常包括提供石油化学原料,其中石油化学原料包括极性杂质的浓度,使石油化学原料与洗涤剂接触以从其中除去至少一部分极性杂质,从洗涤剂与石油化学原料分离形成 纯化的原料并将纯化的原料送至石化工艺。 在一个实施方案中,石油化学原料包括苯,洗涤剂包括水。

    Dehydrogenation process
    12.
    发明授权
    Dehydrogenation process 失效
    脱氢工艺

    公开(公告)号:US06781024B2

    公开(公告)日:2004-08-24

    申请号:US10074173

    申请日:2002-02-12

    Abstract: Process for the catalytic dehydrogenation of a C2 or C3 alkyl aromatic in which a feedstock containing the alkyl aromatic and steam is supplied into the inlet of a tubular reactor containing a dehydrogenation catalyst. Within the reactor, the feedstock flows through at least a portion of the reactor along a spiral flow path extending longitudinally of the reactor. The resulting vinyl aromatic product is then recovered from a downstream or outlet section of the reactor. The spiral flow path through which the feedstock is passed is located at least adjacent the inlet side of the reactor and at least a portion of the spiral flow path contains a particulate dehydrogenation catalyst. The spiral flow path may extend throughout a major portion of the elongated tubular reactor and may contain a particulate dehydrogenation catalyst in a substantial portion there. The feedstock containing the alkyl aromatic and steam is supplied into a plurality of tubular reactors located within the interior of a dehydrogenation reactor vessel and is arranged in a parallel relationship in which the tubular reactors are spaced laterally from one another and from the interior wall of the reaction vessel.

    Abstract translation: 将含有烷基芳族和蒸汽的原料供给到含有脱氢催化剂的管式反应器的入口中的C2或C3烷基芳族化合物的催化脱氢方法。 在反应器内,原料沿着反应器纵向延伸的螺旋流动路径流过反应器的至少一部分。 然后从反应器的下游或出口部分回收得到的乙烯基芳族化合物。 原料通过的螺旋流动路径至少位于反应器的入口侧,螺旋流路的至少一部分含有颗粒脱氢催化剂。 螺旋流动路径可以延伸穿过细长管式反应器的主要部分,并且可以在其中大部分含有颗粒状脱氢催化剂。 将含有烷基芳族化合物和蒸汽的原料供给到位于脱氢反应器容器内部的多个管式反应器中并且以平行关系排列,其中管式反应器彼此横向间隔开, 反应容器

    Dehydrogenation process
    13.
    发明授权
    Dehydrogenation process 有权
    脱氢工艺

    公开(公告)号:US06380449B1

    公开(公告)日:2002-04-30

    申请号:US09718601

    申请日:2000-11-22

    Abstract: Process for the catalytic dehydrogenation of ethylbenzene in which a feedstock containing ethylbenzene and steam is supplied into the inlet of a tubular reactor containing a dehydrogehation catalyst. Within the reactor, the feedstock flows through at least a portion of the reactor along a spiral flow path extending longitudinally of the reactor. The resulting styrene product is then recovered from a downstream or outlet section of the reactor. The spiral flow path through which the feedstock is passed is located at least adjacent the inlet side of the reactor and at least a portion of the spiral flow path contains a particulate dehydrogenation catalyst. The spiral flow path may extend throughout a major portion of the elongated tubular reactor and may contain a particulate dehydrogenation catalyst in a substantial portion there.

    Abstract translation: 乙苯的催化脱氢方法,其中将含有乙苯和蒸汽的原料供入含有脱氢化催化剂的管式反应器的入口。 在反应器内,原料沿着反应器纵向延伸的螺旋流动路径流过反应器的至少一部分。 然后从反应器的下游或出口部分回收得到的苯乙烯产物。 原料通过的螺旋流动路径至少位于反应器的入口侧,螺旋流路的至少一部分包含颗粒脱氢催化剂。 螺旋流动路径可以延伸穿过细长管式反应器的主要部分,并且可以在其中大部分含有颗粒状脱氢催化剂。

    Gas phase alkylation-liquid transalkylation process
    14.
    发明授权
    Gas phase alkylation-liquid transalkylation process 失效
    气相烷基化 - 液体烷基转移法

    公开(公告)号:US5955642A

    公开(公告)日:1999-09-21

    申请号:US739564

    申请日:1996-10-30

    CPC classification number: C07C15/02 C07C2529/40 C07C2529/70

    Abstract: An alkylation/transalkylation process involving vapor phase alkylation of a benzene feedstock in a multi-stage alkylation zone having a plurality of series connected catalyst beds containing a pentasil aromatic alkylation catalyst, such as silicalite, coupled with intermediate separation and recirculation steps and liquid phase transalkylation over a transalkylation catalyst comprising a molecular sieve having a pore size greater than the pore size of the silicalite. The benzene containing feedstock is supplied to the multi-stage alkylation reaction zone along with a C.sub.2 -C.sub.4 alkylating agent operated under temperature and pressure conditions to maintain the benzene in the gas phase. Alkylated product is recovered from the alkylation zone and supplied to a benzene recovery zone for the separation of the benzene from the alkylation product. Benzene from the benzene recovery zone is recycled to the reaction zone. A higher boiling bottom fraction containing a mixture of monoalkylated and polyalkylated aromatic components is supplied to a secondary separation zone from which a monoalkylated aromatic component, e.g. ethylbenzene, is recovered overhead with a heavier polyalkylated aromatic recovered as a bottom fraction. The bottom fraction may be applied to a tertiary separation zone.

    Abstract translation: 一种烷基化/烷基转移方法,涉及在多级烷基化区中苯原子气相烷基化的方法,该多级烷基化区具有多个串联连接的催化剂床,该催化剂床含有pentasil芳族烷基化催化剂,如硅沸石,加上中间分离和再循环步骤以及液相烷基转移 在包含具有大于硅沸石的孔径的孔径的分子筛的烷基转移催化剂上。 含苯原料与在温度和压力条件下运行的C2-C4烷基化剂一起供应到多级烷基化反应区,以保持苯在气相中。 从烷基化区回收烷基化产物,并将其供应至苯回收区,以将苯与烷基化产物分离。 苯从苯回收区循环到反应区。 将含有单烷基化和多烷基化芳族组分的混合物的较高沸点底部馏分供应到二级分离区,从其分离单烷基化芳族组分,例如, 乙苯,用作为底部馏分回收的较重的多烷基化芳烃塔顶回收。 底部馏分可以施加到第三分离区。

    Stable toluene disproportionation process
    15.
    发明授权
    Stable toluene disproportionation process 失效
    甲苯歧化过程稳定

    公开(公告)号:US5475180A

    公开(公告)日:1995-12-12

    申请号:US317511

    申请日:1994-10-04

    CPC classification number: C07C6/123

    Abstract: A process is provided for the disproportionation of a toluene feedstock over a metal promoted mordenite catalyst. The catalyst may contain between 1.0-1.5 weight percent nickel. The toluene feedstock is supplied to the reaction zone and into contact with the catalyst. The reaction zone is operated under disproportionation conditions. During disproportionation, heavy aromatic reformates, in concentration of at least 4 weight percent, are introduced into the reaction zone. Disproportionation product containing benzene and xylene is continuously withdrawn. The addition of the heavy aromatic reformate does not adversely affect toluene conversion rates, product selectivity to benzene, catalyst activity or catalyst life. Moreover, production of xylenes increase at the expense of production of heavies.

    Abstract translation: 提供了一种用于在金属促进的丝光沸石催化剂上歧化甲苯原料的方法。 催化剂可以含有1.0-1.5重量%的镍。 将甲苯原料供应到反应区并与催化剂接触。 反应区在歧化条件下运行。 在歧化过程中,将浓度至少为4重量%的重质芳族重整油引入反应区。 含有苯和二甲苯的歧化产品不断退出。 加入重芳香重整油不会对甲苯转化率,产物对苯的选择性,催化剂活性或催化剂寿命产生不利影响。 此外,二甲苯的生产以重的生产为代价增加。

    Dehydrogenation and polymerization process
    17.
    发明申请
    Dehydrogenation and polymerization process 失效
    脱氢和聚合过程

    公开(公告)号:US20080306320A1

    公开(公告)日:2008-12-11

    申请号:US11811084

    申请日:2007-06-08

    Inventor: James T. Merrill

    CPC classification number: C08F236/08 C08C4/00

    Abstract: Process for the production of an isoprene containing rubber compound by dehydrogenation of an isoamylene containing feedstock supplied to a dehydrogenation reactor containing a particulate dehydrogenation catalyst comprising iron and potassium and having a pore diameter of at least 500 nanometers. The dehydrogenation reactor is operated at a temperature of at least 570° C. to dehydrogenate the isoamylene to produce isoprene. The product containing isoprene and unreacted isoamylene is recovered from the dehydrogenation reactor. Isoprene is polymerized to produce an isoprene containing rubber product. An unreacted feed component containing isoamylene is separated from the rubber product and recycled to the dehydrogenation reactor.

    Abstract translation: 通过将含有异戊烯的原料脱氢而制备含异戊二烯的橡胶化合物的方法,所述异戊烯的原料供给含有含有铁和钾并且孔径至少为500纳米的颗粒脱氢催化剂的脱氢反应器。 脱氢反应器在至少570℃的温度下操作以使异戊烯脱氢以产生异戊二烯。 从脱氢反应器回收含有异戊二烯和未反应的异戊烯的产物。 将异戊二烯聚合以产生含异戊二烯的橡胶产品。 将含有异戊烯的未反应进料组分与橡胶产物分离并再循环至脱氢反应器。

    Methods and systems for purifying styrene feedstock comprising use of low palladium catalyst
    18.
    发明授权
    Methods and systems for purifying styrene feedstock comprising use of low palladium catalyst 有权
    用于纯化苯乙烯原料的方法和系统,包括使用低钯催化剂

    公开(公告)号:US06727398B2

    公开(公告)日:2004-04-27

    申请号:US09850672

    申请日:2001-05-07

    Inventor: James T. Merrill

    CPC classification number: C07C15/46 C07C7/167 C07C2521/04 C07C2523/02

    Abstract: Apparatus, methods and systems useful for removing phenylacetylene from crude styrene feedstock are disclosed. Generally the processes and systems comprise the catalytic reduction of phenylacetylene to produce styrene via injection of a phenylacetylene reducing agent, such as hydrogen. A phenylacetylene reduction catalyst preferred herein comprises palladium on a calcium aluminate carrier, wherein the catalyst comprises less than 0.3 weight percent palladium.

    Abstract translation: 公开了用于从粗苯乙烯原料中除去苯乙炔的装置,方法和系统。 通常,该方法和系统包括苯基乙炔的催化还原以通过注入苯乙炔还原剂如氢气来生产苯乙烯。 本文优选的苯乙炔还原催化剂包含铝酸钙载体上的钯,其中催化剂包含小于0.3重量%的钯。

    Process for purifying styrene monomer feedstock prior to polymerization
    19.
    发明授权
    Process for purifying styrene monomer feedstock prior to polymerization 失效
    聚合前对苯乙烯单体原料进行纯化的方法

    公开(公告)号:US06689926B2

    公开(公告)日:2004-02-10

    申请号:US10074387

    申请日:2002-02-12

    Inventor: James T. Merrill

    CPC classification number: C07C5/09 C07C7/20 Y02P20/52 C07C15/46 C07C11/04

    Abstract: A process is disclosed which provides for the reduction of phenylacetylene levels in styrene monomer feedstreams, which process utilizes a normal styrene inhibitor additive, such as an hydroxylamine, injected into the styrene monomer feedstream immediately upstream of the phenylacetylene reduction reactor.

    Abstract translation: 公开了一种方法,其提供苯乙烯单体原料流中苯基乙炔含量的降低,该方法利用苯基苯乙烯还原反应器上游的苯乙烯单体进料流中注入的正丁基苯乙烯抑制剂添加剂,例如羟胺。

    Heat integration in alkylation/transalkylation process
    20.
    发明授权
    Heat integration in alkylation/transalkylation process 失效
    在烷基化/烷基转移过程中的热积分

    公开(公告)号:US5900518A

    公开(公告)日:1999-05-04

    申请号:US739897

    申请日:1996-10-30

    CPC classification number: C07C15/02 C07C2529/06 Y02P20/582

    Abstract: The present invention addresses heat integration in an alkylation/transalkylation process involving alkylation of an aromatic substrate with a C.sub.2 -C.sub.4 alklating agent coupled with separation to recover a monoalkylated aromatic product and liquid phase transalkylation of a polyalkylated product. Aromatic feedstock and a C.sub.2 -C.sub.4 alkylating agent are supplied to an alkylation reaction zone which is operated to produce an alkylated product. The output from the alkylation reaction zone initially travels through an arrangement of heat exchangers. From there, the alkylation effluent passes into the first separation zone which is operated to produce a lower boiling fraction comprising the aromatic substrate, which may be recycled to the alkylation reaction zone, and a higher boiling fraction comprising a mixture of monoalkylated and polyalkylated aromatics. This lower boiling fraction first travels back through portions of the heat exchanger arrangement on the way to recycle into the alkylation zone. The higher boiling fraction of the first separation zone is supplied to a secondary separation zone to produce a second lower boiling fraction comprising the desired monoalkylated product and a higher boiling fraction comprising polyalkylated product. At least a portion of the higher boiling polyalkylated fraction passes through a portion of the heat exchanger arrangement into a transalkylation reaction zone containing a molecular sieve transalkylation catalyst operated under liquid phase conditions to cause disproportionation of the polyalkylated fraction to arrive at a disproportionation product having a reduced polyalkylated aromatic content and an enhanced monoalkylated aromatic content.

    Abstract translation: 本发明涉及烷基化/烷基转移方法中的热积分,其涉及通过与分离相结合的C2-C4烷基化剂芳族底物的烷基化以回收单烷基化芳族产物和多烷基化产物的液相烷基转移。 将芳族原料和C 2 -C 4烷基化剂供给到烷基化反应区,其操作以产生烷基化产物。 烷基化反应区的输出最初通过热交换器的排列。 从那里,烷基化流出物进入第一分离区,其被操作以产生包含可以再循环到烷基化反应区的芳族底物的较低沸点馏分,以及包含单烷基化和多烷基化芳族化合物的混合物的较高沸点馏分。 该低沸点馏分首先通过热交换器装置的一部分在回收进入烷基化区的路上返回。 将第一分离区的较高沸点馏分供应到第二分离区以产生包含所需单烷基化产物和包含多烷基化产物的较高沸点馏分的第二较低沸点馏分。 高沸点多烷基化馏分的至少一部分通过热交换器装置的一部分进入含烷基转移反应区的烷基转移反应区,该烷基转移反应区含有在液相条件下操作的分子筛烷基转移催化剂,导致多烷基化馏分的歧化,得到具有 减少的多烷基化芳族含量和增强的单烷基化芳族含量。

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