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    PROCESS FOR BENZENE REDUCTION AND SULFUR REMOVAL FROM FCC NAPHTHAS
    3.
    发明公开
    PROCESS FOR BENZENE REDUCTION AND SULFUR REMOVAL FROM FCC NAPHTHAS 审中-公开
    方法苯还原和脱硫催化裂化汽油的

    公开(公告)号：EP2084248A2

    公开(公告)日：2009-08-05

    申请号：EP07867234.2

    申请日：2007-10-16

    Applicant: ExxonMobil Research and Engineering Company

    Inventor： UMANSKY, Benjamin S. ,  STANLEY, James F. ,  MELLI, Tomas R. ,  SMYTH, Sean C. ,  ROUNDTREE, Eugene M.

    IPC: C10G61/00

    CPC classification number: C10G29/205 ,  B01J29/40 ,  B01J29/70 ,  B01J29/90 ,  B01J2229/42 ,  C10G21/00 ,  C10G27/00 ,  C10G45/12 ,  C10G61/10 ,  Y02P20/52

    Abstract: A process for the removal of sulfur compounds and benzene of a catalytically cracked petroleum naphtha comprising benzene, organic sulfur compounds and olefins, by fractionating the cracked naphtha into a relatively low boiling range, olefinic, light catalytic naphtha (LCN) and an olefinic heavy catalytic naphtha (HCN) which boils above the range of the LCN the boiling ranges of the LCN and the HCN being defined by a cut point selected to maintain most of the benzene in the cracked naphtha in the LCN together with olefins in the boiling range of the LCN. The LCN is subjected to an optional non-hydrogenative desulfurization step followed by a fixed bed alkylation step in which the benzene in the LCN is alkylated with the olefins contained in this fraction. The HCN is treated by a similar an alkylation step using the olefins contained in this fraction to alkylate the sulfur compounds, forming alkylated products which boil above the gasoline boiling range. The LCN and HCN are then fractionated to remove light ends and higher boiling sulfur reaction products (disulfides, alkylated thiophenes) boiling above the gasoline boiling range.

    OLEFIN UPGRADING PROCESS WITH GUARD BED REGENERATION
    6.
    发明公开
    OLEFIN UPGRADING PROCESS WITH GUARD BED REGENERATION 审中-公开
    防护床再生烯烃升级过程

    公开(公告)号：EP2046497A2

    公开(公告)日：2009-04-15

    申请号：EP07836394.2

    申请日：2007-08-01

    Applicant: ExxonMobil Research and Engineering Company

    Inventor： UMANSKY, Benjamin S. ,  CLARK, Michael C.

    IPC: B01J29/04 ,  B01J29/70 ,  C07C2/06 ,  C07C2/12 ,  C07C2/66 ,  C07C7/13 ,  C10G11/00 ,  C10G25/03 ,  C10G25/05 ,  C10G25/12

    CPC classification number: C10G11/00 ,  B01J20/3408 ,  B01J29/7038 ,  C07C7/13 ,  C10G25/03 ,  C10G25/05 ,  C10G25/12 ,  C10G2300/1092 ,  C10G2300/1096 ,  C10G2400/02 ,  Y02P20/52 ,  C07C11/02

    Abstract: A process for the regeneration of materials used in the guard beds preceding the reactors used in an olefin conversion process which converts olefinic refinery streams to higher boiling hydrocarbon products by polymerization (oligomerization) or alkylation of aromatics including benzene. Products of the process may include olefin oligomers and alkylaromatics in the gasoline boiling range as well as alkylaromatic petrochemicals such as cumene and ethylbenzene. The process is integrated with the olefin conversion process to ensure continuous operation of the olefin conversion without sending the feedstock containing the contaminant(s) to the reactor. The process uses reaction products from the olefin conversion process to regenerate the guard bed material and so is economically attractive since it does not require the use of separate purge, regeneration feed and separation systems. A plurality of guard beds is used, each containing a material which removes catalyst poisons. The guard beds are operated on a swing system in which one or more beds is kept on stream to remove the contaminant(s) while one or more of the remaining beds is being purged or regenerated. In this way, continuity of operation is assured. The regeneration medium is a product stream from the olefin conversion process.

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