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    Programmable logic controller in dehydrogenation process
    32.
    发明授权
    Programmable logic controller in dehydrogenation process 有权

    公开(公告)号：US11370729B2

    公开(公告)日：2022-06-28

    申请号：US16604215

    申请日：2018-05-01

    Applicant: SABIC Global Technologies B.V.

    Inventor： Mohammed Bismillah Ansari ,  Vijay Dinkar Bodas ,  Guillermo Leal ,  Sultan Al-Otaibe

    IPC: C07C5/333 ,  B01J8/00 ,  B01J8/02 ,  B01J23/26 ,  B01J23/62 ,  B01J38/02

    Abstract: Systems and methods of dehydrogenating a hydrocarbon in a fixed bed dehydrogenation unit. A method for dehydrogenating a hydrocarbon is applied to a fixed bed reactor. The hydrocarbon flows to a fixed bed reactor to be dehydrogenated in presence of a catalyst in the fixed bed reactor. The catalyst in the fixed bed reactor is then regenerated. The period for dehydrogenation, the period for catalyst regeneration and the period for total slack time are controlled such that total slack time is less than both half of the period for dehydrogenation and half of the period for regeneration. One of the advantages of the process comes from optimization of the slack time, thereby increasing the catalyst utilization rate and number of reactors concurrently online.

    PROCESS AND SYSTEM FOR PRODUCING ETHYLENE AND AT LEAST ONE OF BUTANOL AND AN ALKYL TERT-BUTYL ETHER
    35.
    发明申请
    PROCESS AND SYSTEM FOR PRODUCING ETHYLENE AND AT LEAST ONE OF BUTANOL AND AN ALKYL TERT-BUTYL ETHER 有权

    公开(公告)号：US20210380515A1

    公开(公告)日：2021-12-09

    申请号：US17292261

    申请日：2019-11-20

    Applicant: SABIC Global Technologies B.V.

    Inventor： Vijay Dinkar Bodas ,  Guillermo Leal ,  Mohammed Bismillah Ansari

    IPC: C07C41/06 ,  C07C29/04

    Abstract: A process for producing ethylene and at least one of butanol and an alkyl tert-butyl ether from field butane includes separating the field butane into an n-butane stream and an isobutane stream; cracking the n-butane stream to obtain a cracked product stream comprising n-butane, 1-butene, 2-butene, butadienes, or a combination comprising at least one of the foregoing; and at least one of the following: (1) separating the cracked product stream to obtain a butane stream and a butene stream, and reacting the butene stream with water to obtain a fuel additive comprising butanol, and (2) dehydrogenating the isobutane stream in a dehydrogenation unit to form an isobutene stream and reacting the isobutene stream with an aliphatic alcohol to produce an alkyl tert-butyl ether.

    METHOD FOR PURIFICATION OF A AROMATIC DIACID OR THE CORRESPONDING ANHYDRIDES
    38.
    发明申请
    METHOD FOR PURIFICATION OF A AROMATIC DIACID OR THE CORRESPONDING ANHYDRIDES 审中-公开

    公开(公告)号：US20180118653A1

    公开(公告)日：2018-05-03

    申请号：US15562234

    申请日：2016-03-18

    Applicant: SABIC Global Technologies B.V.

    Inventor： Vinodkumar Vasudevan ,  Guillermo Leal ,  Nedumbamana Sankaran ,  Syed Azhar Hashmi

    IPC: C07C51/487 ,  C07C51/43 ,  C07C51/265

    CPC classification number: C07C51/487 ,  C07C51/265 ,  C07C51/43 ,  C07C63/26

    Abstract: A method of removing an aromatic carboxy-aldehyde from an aromatic acid or the corresponding anhydride includes reacting a hydroxylamine-containing compound with the aromatic carboxy-aldehyde to form a reaction mixture including the corresponding nitrone. A phthalic acid or corresponding anhydride prepared according to the method is also described herein. A method for the manufacture of a phenyl dicarboxylic acid includes oxidizing a xylene to provide a stream including the phenyl dicarboxylic acid and the corresponding carboxybenzaldehyde and toluic acid contaminants, reacting a hydroxylamine-containing compound with the carboxybenzaldehyde in the stream to form a reaction mixture including the corresponding nitrone, wherein the nitrone is water soluble, and crystallizing the phenyl dicarboxylic acid or the corresponding anhydride from water to provide the purified phenyl dicarboxylic acid or the corresponding anhydride. A phenyl dicarboxylic acid prepared according to the above method represents another embodiment.

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