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    FLUIDIZED BED COKING WITH FUEL GAS PRODUCTION
    13.
    发明申请
    FLUIDIZED BED COKING WITH FUEL GAS PRODUCTION 审中-公开

    公开(公告)号：US20190112537A1

    公开(公告)日：2019-04-18

    申请号：US16229259

    申请日：2018-12-21

    Applicant: ExxonMobil Research and Engineering Company

    Inventor： Suriyanarayanan Rajagopalan ,  Glen E. Phillips ,  Mohsen N. Harandi

    IPC: C10J3/48 ,  C10J3/66 ,  C10J3/72 ,  C10G9/32

    Abstract: A Flexicoking™ unit which retains the capability of converting heavy oil feeds to lower boiling liquid hydrocarbon products while making a fuel gas from rejected coke to provide only a minimal coke yield. The heater section of the conventional three section unit (reactor, heater, gasifier) is eliminated and all or a portion of the cold coke from the reactor is passed directly to the gasifier which is modified by the installation of separators to remove coke particles from the product gas which is taken out of the gasifier for ultization. In one embodiment, a portion of cold coke is transferred directly from the reactor to the gasifier, and another portion of cold coke is combined with hot, partly gasified coke particles transferred directly from the gasifier to the reactor. The hot coke from the gasifier is passed directly to the coking zone of the reactor to supply heat to support the endothermic cracking reactions and supply seed nuclei for the formation of coke in the reactor. Coke is withdrawn from the gasifier to remove excess coke and to purge the system of metals and ash.

    Methods for methanol-to-gasoline conversion with methanol recycling
    15.
    发明授权
    Methods for methanol-to-gasoline conversion with methanol recycling 有权

    公开(公告)号：US11118115B2

    公开(公告)日：2021-09-14

    申请号：US16903220

    申请日：2020-06-16

    Applicant: ExxonMobil Research and Engineering Company

    Inventor： Mohsen N. Harandi ,  Suriyanarayanan Rajagopalan ,  David W. Staubs ,  Terry E. Helton ,  Mitch L. Hindman

    IPC: C10G3/00 ,  B01D3/00 ,  C10G7/04 ,  C10G7/08

    Abstract: Methanol-to-gasoline (MTG) conversion may be performed with a methanol recycling. Methanol may be fed to a first reactor where it may be catalytically converted under dimethyl ether formation conditions in the presence of a first catalyst to form a product mixture comprising dimethyl ether (DME), methanol, and water. The DME may be separated from the methanol and the water and delivered to a second reactor. In the second reactor, the DME may be catalytically converted under MTG conversion conditions in the presence of a second catalyst to form a second product mixture comprising gasoline hydrocarbons and light hydrocarbon gas. The methanol and the water from the first reactor may be separated further to obtain substantially water-free methanol, which may be returned to the first reactor. The separation of methanol from the water may be performed using the light hydrocarbon gas to effect stripping of the methanol.

    Gasification with enriched oxygen for production of synthesis gas
    18.
    发明授权
    Gasification with enriched oxygen for production of synthesis gas 有权

    公开(公告)号：US10407631B2

    公开(公告)日：2019-09-10

    申请号：US15812340

    申请日：2017-11-14

    Applicant: ExxonMobil Research and Engineering Company

    Inventor： Mohsen N. Harandi ,  Suriyanarayanan Rajagopalan

    IPC: B01J8/26 ,  C01C1/04 ,  C10J3/46 ,  C10J3/48 ,  C10J3/82 ,  C07C273/10 ,  C07C29/151

    Abstract: Systems and methods are provided for producing high quality synthesis gas from a fluidized coking system that includes an integrated gasifier. Additionally or alternately, systems and methods are provided for integrating a fluidized coking process, a coke gasification process, and processes for production of compounds from the synthesis gas generated during the coke gasification. The integrated process can also allow for reduced or minimized production of inorganic nitrogen compounds by using oxygen from an air separation unit as the oxygen source for gasification. Although the amount of nitrogen introduced as a diluent into the gasification will be reduced, minimized, or eliminated, the integrated process can also allow for gasification of coke while reducing, minimizing, or eliminating production of slag or other glass-like substances in the gasifier. Examples of compounds that can be produced from the synthesis gas include, but are not limited to, methanol, ammonia, and urea.

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