FCC unit charge injection device with limited pressure drop

    公开(公告)号:US10807057B2

    公开(公告)日:2020-10-20

    申请号:US16496862

    申请日:2018-03-22

    Abstract: The invention relates to an injection device (10) configured to atomize a liquid into droplets using a gas, comprising a hollow tubular body (12) of longitudinal direction (X). An internal wall (13) defines a first zone referred to as a contact zone (Z1) and a second zone (Z2). The body has: at least a first and a second inlet opening (14; 16) opening into the said first zone (Z1), so as to respectively inject a liquid and an atomizing gas, at least one outlet orifice (18) situated downstream of the first and second zones, for removing the atomized liquid from the body. The internal wall (13) of the body is provided, between the zones (Z1) (Z2), with at least one chicane (20i) configured so that, in each plane perpendicular to the longitudinal direction of the body containing the said chicane, this chicane extends over just part of the periphery of the internal wall (13).

    Gas injection element for a fluid catalytic cracking unit and gas distribution system equipped with this injection element

    公开(公告)号:US10799844B2

    公开(公告)日:2020-10-13

    申请号:US16489030

    申请日:2018-02-22

    Inventor: Romain Lesage

    Abstract: A gas injection element (10) for a system for distributing a gas inside a chamber of a fluid catalytic cracking unit. This injection member comprises a passage (14) extending entirely therethrough, and—an inner ceramic member (20) having an inner surface (22) that entirely delimits the through-passage (14); and—a hollow metal sleeve (30), inside which at least a portion of the inner member (20) is received, the sleeve (30) and the inner member (20) respectively having an inner surface (32) and an outer surface (24) with matching shapes allowing the inner member (20) to move relative to the sleeve (30) in a direction parallel to an axis (X) of the passage (14), the outer (32) and inner surfaces (24) being provided with fastening elements (26, 36) that engage to reversibly fasten the sleeve and the inner member.

    Sample mixing control
    108.
    发明授权

    公开(公告)号:US10782310B2

    公开(公告)日:2020-09-22

    申请号:US16086303

    申请日:2016-06-10

    Inventor: Ze'ev Russak

    Abstract: A method for controlling the mixing of a plurality of samples subject to a chemical process, the method comprising computer executed steps, the steps comprising: for each one of the samples, receiving respective data on a result obtained for the sample using the chemical process, and for each one of at least two of the samples, further receiving respective data on classification of the sample into one of at least two classes, for each one of the samples, calculating a respective rank based on the result obtained for the sample using the chemical process, finding among the samples, at least one pair of samples classified into different ones of the classes, such that for each respective one of the found pairs, none of the samples having a calculated rank in between the ranks calculated for the two samples of the found pair are classified into one of the classes.

    FEED GAS FEEDING SYSTEM FOR PROPYLENE AMMOXIDATION REACTOR

    公开(公告)号:US20200276551A1

    公开(公告)日:2020-09-03

    申请号:US16762988

    申请日:2018-01-03

    Inventor: Le ZHAO Lianghua WU

    Abstract: The present invention provides a feed gas feeding system for a propylene ammoxidation reactor. The feed gas feeding system comprises a feed gas mixing system and a feed distributor. A propylene and ammonia mixed gas is mixed by the feed gas mixing system and then uniformly distributed in the propylene ammoxidation reactor by means of the feed distributor, an initial temperature T0 when the propylene and ammonia mixed gas enters the feed distributor being 10-220° C. The propylene and ammonia feed gas feeding system of the present invention for ammoxidation of propylene and the preparation of acrylonitrile prevents the temperature of a gas mixture at any position in the propylene and ammonia feed distributor from reaching a temperature at which ammonia decomposes into active nitrogen atoms, thereby reducing a risk of brittle nitriding fractures of the propylene and ammonia distributor.

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