MULTI-STAGE HYDROPROCESSING OF MIDDLE DISTILLATES TO AVOID COLOR BODIES
    33.
    发明授权
    MULTI-STAGE HYDROPROCESSING OF MIDDLE DISTILLATES TO AVOID COLOR BODIES 有权
    多级氢处理中间馏分油为防止发色体

    公开(公告)号:EP1090092B1

    公开(公告)日:2011-01-12

    申请号:EP99920033.0

    申请日:1999-04-26

    Inventor: GUPTA, Ramesh

    CPC classification number: C10L1/003 C10G65/00 C10G65/04

    Abstract: A process for hydroprocessing middle distillate petroleum streams in two temperature stages is disclosed. The feedstream (11) is hydroprocessed in two or more first temperature stages operated at a temperature from about 360 to about 450 degrees celsius. The reaction product (13) of the first temperature stage(s) is quenched to a temperature from about 260 to about 350 degrees celsius, stripped of hydrogen sulfide, ammonia and other dissolved gases to form a reaction product (17) which is sent to a second temperature stage which is operated at said quenched temperature range. The product from the second temperature stage is also stripped of dissolved gases in a stripping zone (16b). Color bodies produced in the higher temperature first stage are hydrogenated in the last stage.

    STAGED UPFLOW AND DOWNFLOW HYDROPROCESSING WITH NONCATALYTIC REMOVAL OF UPFLOW STAGE VAPOR IMPURITIES
    34.
    发明授权
    STAGED UPFLOW AND DOWNFLOW HYDROPROCESSING WITH NONCATALYTIC REMOVAL OF UPFLOW STAGE VAPOR IMPURITIES 有权
    逐渐上游和ABSTROMHYDRIERUNG的污染从AUFSTROMHYDRIERUNG气流的非催化去除

    公开(公告)号:EP1157081B1

    公开(公告)日:2005-01-05

    申请号:EP99971019.7

    申请日:1999-10-20

    Inventor: GUPTA, Ramesh

    CPC classification number: C10G67/04 Y10S203/06

    Abstract: A hydroprocessing process for removing impurities from a feed (30) comprising a hydrocarbonaceous liquid comprises at least one cocurrent, upflow hydroprocessing reaction stage (18), a vapor-liquid contacting stage (20) and a downflow hydroprocessing reaction stage (12). The feed and hydrogen react in the upflow stage (18) to produce a partially hydroprocessed liquid and vapor effluent. The vapor contacts a hydrocarbonaceous liquid in the contacting stage (20), which transfers impurities from the vapor into the liquid. The impurities-enriched contacting liquid mixes with the upflow stage liquid effluent and the combined liquid effluents react with hydrogen in the downflow reaction stage, to form a hydroprocessed product liquid and vapor effluent. Additional product liquid is recovered by cooling and condensing either or both the contacting and downflow stage vapor effluents.

    TWO STAGE DIESEL FUEL HYDROTREATING AND STRIPPING IN A SINGLE REACTION VESSEL
    35.
    发明公开
    TWO STAGE DIESEL FUEL HYDROTREATING AND STRIPPING IN A SINGLE REACTION VESSEL 审中-公开
    柴油加氢阶段,在一个反应​​容器中剥离

    公开(公告)号:EP1330504A1

    公开(公告)日:2003-07-30

    申请号:EP01979969.1

    申请日:2001-10-09

    Inventor: GUPTA, Ramesh

    CPC classification number: C10G65/08

    Abstract: A diesel fraction is purified by a process having two reaction stages represented by (14) and (18) and a stripping stage in a single vessel. Heteroatoms are removed in the first stage (14), to permit the use of a sulfur sensitive aromatics saturation catalyst in the second stage, to produce a purified diesel stock. The first stage liquid effluent is stripped in a stripping stage and then passed into the second reaction stage (18), in which it reacts with fresh hydrogen for aromatics removal. The second reaction stage (18) produces a hydrogen-rich vapor effluent, which may provide all or a portion of the first stage (18). The diesel feed for the process may be one that has been at least partially refined with respect to either or both heteroatom or aromatics removal.

    SINGLE STAGE MULTI-ZONE HYDROISOMERIZATION PROCESS
    36.
    发明公开
    SINGLE STAGE MULTI-ZONE HYDROISOMERIZATION PROCESS 审中-公开
    单级多区域加氢异构化过程

    公开(公告)号:EP1254199A1

    公开(公告)日:2002-11-06

    申请号:EP01904928.7

    申请日:2001-01-18

    CPC classification number: C10G65/00

    Abstract: Fischer-Tropsch synthesized hydrocarbons comprising both a 500-750°F+ heavy fraction and a 500-750°F -light fraction are separately hydroisomerized by a single-stage, two-zone hydroisomerization process, in which at least a portion of the light fraction is hydroisomerized in the first zone, with the total first zone effluent containing unreacted hydrogen and a light hydroisomerate. The first zone effluent and the heavy fraction are passed into the second zone to form a second zone effluent comprising the hydroisomerized product. The product is fractionated into a plurality of product fractions, including a distillate fuels fraction containing a jet fuel fraction. The hydrogen treat gas is used to separate a portion of the light fraction from the heavy fraction, prior to the hydroisomerization.

    Abstract translation: 同时包含500-750°F +重馏分和500-750°F-轻馏分的费 - 托合成烃通过单级双区氢化异构化过程分别加氢异构化,其中至少一部分轻馏分 在第一区中加氢异构化,总的第一区流出物含有未反应的氢和轻质异构体。 第一区流出物和重馏分通入第二区以形成包含加氢异构化产物的第二区流出物。 产物分馏成多个产物馏分,包括含有喷气燃料馏分的馏分燃料馏分。 在加氢异构化之前,使用氢处理气体将轻馏分的一部分与重馏分分离。

    STAGED UPFLOW HYDROPROCESSING WITH NONCATALYTIC IMPURITY REMOVAL FROM THE FIRST STAGE VAPOR EFFLUENT
    37.
    发明公开
    STAGED UPFLOW HYDROPROCESSING WITH NONCATALYTIC IMPURITY REMOVAL FROM THE FIRST STAGE VAPOR EFFLUENT 有权
    一步一步的上升气流HYDRO-Kracking过程与一级蒸汽污染的非催化去除

    公开(公告)号:EP1149142A1

    公开(公告)日:2001-10-31

    申请号:EP99971020.5

    申请日:1999-10-20

    Inventor: GUPTA, Ramesh

    CPC classification number: C10G49/002 C10G67/04 Y10S203/06

    Abstract: A hydroprocessing process for removing impurities from a feed (22) comprising a hydrocarbonaceous liquid comprises at least two cocurrent, upflow hydroprocessing reaction stages (14, 16) and a non-catalytic, vapor-liquid contacting stage (20). The reaction and contacting stages may all be in the same reactor vessel (12). The feed and a hydrogen treat gas (24) are passed up into a catalyst bed which comprises the first reaction stage, which produces a partially hydroprocessed liquid and vapor effluent. This first stage vapor is passed up into the contacting stage (20) in which it contacts a hydrocarbonaceous liquid which reduces the vapor impurity content. The impurity-enriched contacting liquid passes down and mixes with the first stage liquid effluent. The combined effluents and hydrogen are passed up into the second reaction stage to form a processed product liquid and hydrogen-containing vapor effluent. This second stage vapor effluent is passed up into the first stage to provide at least a portion of the hydrogen for the first stage reaction. Additional product liquid may be recovered by cooling and condensing the purified contacting stage vapor effluent.

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