PROCESS AND APPARATUS FOR IMPROVED PARA-XYLENE YIELD IN AN AROMATIC COMPLEX

    公开(公告)号:US20180305277A1

    公开(公告)日:2018-10-25

    申请号:US15491796

    申请日:2017-04-19

    Applicant: UOP LLC

    Abstract: Processes and apparatuses for producing para-xylenes are provided. The processes comprises providing a hydrocarbon stream comprising C7+ hydrocarbons. The hydrocarbon stream is separated to provide a C8 aromatics stream and an ortho-xylene rich stream. The C8 aromatics stream is passed to a para-xylene separation unit for separating para-xylene to provide a para-xylene stream and a raffinate stream. At least a portion of the raffinate stream is passed to a first isomerization unit to provide a first isomerization effluent, wherein the first isomerization effluent is produced in the presence of an ethylbenzene (EB) isomerization catalyst. At least a portion of the ortho-xylene rich stream is contacted with an isomerization catalyst in a second isomerization unit in liquid phase at isomerization conditions in substantial absence of hydrogen to produce a second isomerization effluent.

    PROCESS FOR PRODUCING ALKYLATED AROMATIC COMPOUNDS
    4.
    发明申请
    PROCESS FOR PRODUCING ALKYLATED AROMATIC COMPOUNDS 有权
    生产碱性芳族化合物的方法

    公开(公告)号:US20150141700A1

    公开(公告)日:2015-05-21

    申请号:US14466660

    申请日:2014-08-22

    Applicant: UOP LLC

    Abstract: A process for producing alkylated aromatic compounds includes pyrolyzing a coal feed to produce a coke stream and a coal tar stream. The coal tar stream is hydrotreated and the resulting hydrotreated coal tar stream is cracked. A portion of the cracked coal tar stream is separated to obtain a fraction having an initial boiling point in the range of about 60° C. to about 180° C., and an aromatics-rich hydrocarbon stream is extracted by contacting the fraction with one or more solvents. The aromatics-rich hydrocarbon stream is contacted with an alkylating agent to produce an alkylated aromatic stream, or the aromatics-rich hydrocarbon stream is reacted with an aliphatic compound or methanol in the presence of a catalyst to produce a methylated aromatic stream. The alkylated aromatic stream, the methylated aromatic stream, or both are separated into at least a benzene stream, a toluene stream, and a xylenes stream.

    Abstract translation: 制备烷基化芳族化合物的方法包括热解煤进料以产生焦炭流和煤焦油流。 将煤焦油流加氢处理,得到的加氢处理煤焦油流裂化。 将一部分裂化煤焦油流分离,得到初馏点在约60℃至约180℃范围内的馏分,并通过使该馏分与一个馏分接触而提取富含芳烃的烃流 或更多的溶剂。 富含芳烃的烃流与烷基化剂接触以产生烷基化芳族物流,或者在催化剂存在下使富含芳烃的烃物流与脂肪族化合物或甲醇反应,生成甲基化芳族物流。 将烷基化芳族物流,甲基化芳族物流或二者分离成至少一个苯物流,甲苯物流和二甲苯物流。

    PROCESS FOR PRODUCING HYDROGEN-RICH COAL TAR
    5.
    发明申请
    PROCESS FOR PRODUCING HYDROGEN-RICH COAL TAR 审中-公开
    生产氢煤焦油的工艺

    公开(公告)号:US20150136655A1

    公开(公告)日:2015-05-21

    申请号:US14470274

    申请日:2014-08-27

    Applicant: UOP LLC

    CPC classification number: C10G1/002 C10G1/02 C10G1/06 C10G1/08

    Abstract: A process for producing hydrogen-rich coal tar includes introducing a coal feed into a pyrolysis zone, and contacting the coal feed with a hydrogen donor stream and a multifunctional catalyst in the pyrolysis zone. The multifunctional catalyst includes a hydrogenation function for increasing a hydrogen content of said coal tar stream. The process further includes pyrolyzing the coal feed with the hydrogen donor stream and the multifunctional catalyst to produce a coke stream and a coal tar stream comprising hydrocarbon vapor.

    Abstract translation: 一种生产富氢煤焦油的方法包括将煤进料引入热解区,并使煤进料与热解区中的供氢物流和多官能催化剂接触。 多功能催化剂包括用于增加所述煤焦油流的氢含量的氢化功能。 该方法还包括用供氢物流和多功能催化剂热解煤进料以产生焦炭流和包含烃蒸气的煤焦油流。

    PROCESS FOR PYROLYZING COAL USING A RECYCLED HYDROGEN DONOR
    6.
    发明申请
    PROCESS FOR PYROLYZING COAL USING A RECYCLED HYDROGEN DONOR 审中-公开
    使用循环氢气体进行热解煤的方法

    公开(公告)号:US20150136580A1

    公开(公告)日:2015-05-21

    申请号:US14468746

    申请日:2014-08-26

    Applicant: UOP LLC

    Abstract: A process for pyrolyzing coal using a recycled hydrogen donor includes introducing a coal feed to a pyrolysis zone and heating the coal feed to a temperature of about 300° C. in the absence of hydrogen. A hydrogen donor solvent is introduced to the pyrolysis zone after the coal feed is heated to about 300° C., and the temperature of the coal feed and the hydrogen donor solvent is increased to about 475° C., while increasing a pressure in the pyrolysis zone to at or above a vapor pressure of the hydrogen donor solvent. At least an aromatic hydrocarbon rich fraction is separated from the coal tar stream and hydrogenated. The hydrogenated aromatic hydrocarbon rich fraction is recycled to the pyrolysis zone as the hydrogen donor solvent.

    Abstract translation: 使用再循环氢供体来对煤进行热解的方法包括将煤进料引入热解区并在不存在氢的情况下将煤进料加热到约300℃的温度。 在将煤进料加热至约300℃之后,将氢供体溶剂引入热解区,并将供煤和供氢溶剂的温度升高至约475℃,同时增加 热解区至等于或高于氢供体溶剂的蒸气压。 至少一种富含芳烃的级分与煤焦油流分离并氢化。 氢化富芳烃馏分作为氢供体溶剂再循环到热解区。

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