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    OXIDATION PROCESS TO PRODUCE A CRUDE DRY CARBOXYLIC ACID PRODUCT
    31.
    发明申请
    OXIDATION PROCESS TO PRODUCE A CRUDE DRY CARBOXYLIC ACID PRODUCT 有权
    生产羧酸羧酸产品的氧化方法

    公开(公告)号：US20140256964A1

    公开(公告)日：2014-09-11

    申请号：US14282360

    申请日：2014-05-20

    Applicant: EASTMAN CHEMICAL COMPANY

    Inventor： Mesfin Ejerssa Janka ,  Kenny Randolph Parker ,  Ashfaq Shahanawaz Shaikh ,  Lee Reynolds Partin

    IPC: C07D307/68

    CPC classification number: C07D307/68 ,  C07D307/48

    Abstract: Disclosed is a process to produce a dry purified carboxylic acid product comprising furan-2,5-dicarboxylic acid (FDCA). The process comprises oxidizing at least one oxidizable compound selected from the following group: 5-(hydroxymethyl)furfural (5-HMF), 5-HMF esters (5-R(CO)OCH2-furfural where R=alkyl, cycloalkyl and aryl), 5-HMF ethers (5-R′OCH2-furfural, where R′=alkyl, cycloalkyl and aryl), 5-alkyl furfurals (5-R″-furfural, where R″=alkyl, cycloalkyl and aryl), mixed feed-stocks of 5-HMF and 5-HMF esters and mixed feed-stocks of 5-HMF and 5-HMF ethers and mixed feed-stocks of 5-HMF and 5-alkyl furfurals to generate a crude carboxylic acid slurry comprising FDCA, cooling a crude carboxylic acid slurry in cooling zone to form a cooled slurry stream. The cooled slurry stream is routed to a solid-liquid separation zone to generate a crude wet cake stream comprising FDCA that is dried in a drying zone to generate a dry carboxylic acid product stream comprising crude FDCA (cFDCA).

    Abstract translation: 公开了一种生产包含呋喃-2,5-二羧酸（FDCA）的干燥纯化羧酸产物的方法。 该方法包括氧化至少一种选自以下组的可氧化化合物：5-（羟甲基）糠醛（5-HMF），5-HMF酯（5-R（CO）OCH 2 - 糠醛，其中R =烷基，环烷基和芳基） ，5-HMF醚（5-R'OCH 2 - 糠醛，其中R'=烷基，环烷基和芳基），5-烷基糠醛（5-R“ - 糠醛，其中R”=烷基，环烷基和芳基），混合进料 5-HMF和5-HMF酯的原料和5-HMF和5-HMF醚的混合原料和5-HMF和5-烷基糠醛的混合原料以产生包含FDCA的粗制羧酸浆料，冷却 在冷却区中的粗羧酸浆料以形成冷却的浆料流。 将冷却的浆料流送至固液分离区，以产生包含FDCA的粗湿饼流，其在干燥区中干燥以产生包含粗FDCA（cFDCA）的干燥羧酸产物流。

    Supersonic separation of hydrocarbons
    36.
    发明授权
    Supersonic separation of hydrocarbons 有权

    公开(公告)号：US10436506B2

    公开(公告)日：2019-10-08

    申请号：US16060674

    申请日：2016-12-08

    Applicant: EASTMAN CHEMICAL COMPANY

    Inventor： Ashfaq Shahanawaz Shaikh ,  Anthony Ponder ,  Ginette Tolleson

    IPC: B01D5/00 ,  F25J3/00 ,  F25J3/02 ,  B01D53/24 ,  B01D3/06 ,  B01D53/00 ,  B01D3/14 ,  C10G70/00 ,  B01D53/22

    Abstract: Selective recovery of C2 to C4 hydrocarbons is achieved through the use of a converging-diverging nozzle, or de Laval nozzle. The vapor stream comprising C2 to C4 hydrocarbons is fed into an inlet of a de Laval nozzle having a throat. The vapor stream may have an initial temperature of between 0° C. and 100° C., and an initial pressure of between 200 psig and 500 psig. In the de Laval nozzle, the vapor stream expands after passing through the throat of the de Laval nozzle, producing a vapor stream having reduced temperature and pressure. Then, C2 to C4 hydrocarbons condense from the reduced-temperature vapor stream as liquid droplets, which may be recovered. Fractionation of C2 to C4 hydrocarbons by means of a de Laval nozzle is possible; the technique allows selective recovery of a stream enriched in propene from a mixture of propane and propene.

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