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    Process for purifying crude furan 2,5-dicarboxylic acid using hydrogenation
    12.
    发明授权
    Process for purifying crude furan 2,5-dicarboxylic acid using hydrogenation 有权

    公开(公告)号：US09458122B2

    公开(公告)日：2016-10-04

    申请号：US14841867

    申请日：2015-09-01

    Applicant: Eastman Chemical Company

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

    IPC: C07D307/68

    CPC classification number: C07D307/68

    Abstract: A process to produce a dry purified furan-2,5-dicarboxylic acid (FDCA) is described. After oxidation of 5-(hydroxymethyl)furfural (5-HMF), a crude FDCA stream is produced that is fed to a crystallization zone followed by a solid-liquid displacement zone to form a low impurity slurry stream. The solids in the low impurity slurry stream are dissolved in a dissolution zone to produce a hydrogenation feed that is hydrogenated in a hydrogenation reactor to generate a hydrogenated FDCA composition. The hydrogenated FDCA composition is routed to a crystallization zone to form a crystallized produce stream that is separated from liquid in a solid-liquid separation zone to generate a purified wet cake stream containing FDCA that can be dried in a drying zone to generate a dry purified FDCA product stream.

    PROCESSES FOR PRODUCING TEREPHTHALIC ACID
    13.
    发明申请
    PROCESSES FOR PRODUCING TEREPHTHALIC ACID 有权
    生产过硫酸的方法

    公开(公告)号：US20150087859A1

    公开(公告)日：2015-03-26

    申请号：US14034617

    申请日：2013-09-24

    Applicant: Eastman Chemical Company

    Inventor： David Milton Lange ,  Ashfaq Shahanawaz Shaikh ,  Patrice L. Riesenberg ,  Mesfin Ejerssa Janka

    IPC: C07C51/265

    CPC classification number: C07C51/265 ,  C07C63/26

    Abstract: Processes for producing terephthalic acid are disclosed, the processes including a step of combining in a reaction medium para-xylene, a solvent comprising water and a saturated organic acid having from 2-4 carbon atoms, and an oxygen-containing gas, at a temperature for example from about 145° C. to about 175° C., in the presence of a catalyst composition comprising cobalt, manganese, zirconium, and bromine, wherein the zirconium is present in the reaction medium in an amount, for example, from 1 ppm to 50 ppm with respect to the weight of the liquid in the reaction medium.

    Abstract translation: 公开了制备对苯二甲酸的方法，该方法包括在反应介质中将对二甲苯，包含水和含有2-4个碳原子的饱和有机酸的溶剂和含氧气体在一定温度下混合的步骤 例如约145℃至约175℃，在包含钴，锰，锆和溴的催化剂组合物存在下，其中锆以例如1的量存在于反应介质中 相对于反应介质中液体的重量为ppm至50ppm。

    Purifying crude furan 2,5-dicarboxylic acid by hydrogenation
    14.
    发明授权
    Purifying crude furan 2,5-dicarboxylic acid by hydrogenation 有权
    通过氢化纯化粗呋喃2,5-二羧酸

    公开(公告)号：US08969404B2

    公开(公告)日：2015-03-03

    申请号：US13758080

    申请日：2013-02-04

    Applicant: Eastman Chemical Company

    Inventor： Mesfin Ejerssa Janka ,  Charles Edwan Sumner, Jr. ,  Shane Kipley Kirk ,  Ashfaq Shahanawaz Shaikh ,  Kenny Randolph Parker

    IPC: A61K31/341 ,  C07D307/34 ,  C07D307/68

    CPC classification number: C07D307/68

    Abstract: A process for purifying a crude furan 2,5-dicarboxylic acid composition (cFDCA) by hydrogenation of a FDCA composition dissolved in a hydrogenation solvent such as water, and hydrogenating under mild conditions, such as at a temperature within a range of 130° C. to 225° C. by contacting the solvated FDCA composition with hydrogen in the presence of a hydrogenation catalyst under a hydrogen partial pressure within a range of 10 psi to 900 psi. A product FDCA composition is produced having a low amount of tetrahydrofuran dicarboxylic acid, a low b*, and a low amount of 5-formyl furan-2-carboxylic acid (FFCA).

    Abstract translation: 通过氢化溶解在氢化溶剂如水中的FDCA组合物，并在温和条件下（例如在130℃的温度范围内）氢化来纯化粗呋喃2,5-二羧酸组合物（cFDCA）的方法 通过在10psi至900psi的氢分压下，在氢化催化剂存在下使溶剂化的FDCA组合物与氢气接触。 制备具有少量四氢呋喃二羧酸，低b *和少量5-甲酰基呋喃-2-羧酸（FFCA）的产品FDCA组合物。

    Processes for producing terephthalic acid
    19.
    发明授权
    Processes for producing terephthalic acid 有权
    生产对苯二甲酸的方法

    公开(公告)号：US09212121B2

    公开(公告)日：2015-12-15

    申请号：US14034617

    申请日：2013-09-24

    Applicant: Eastman Chemical Company

    Inventor： David Milton Lange ,  Ashfaq Shahanawaz Shaikh ,  Patrice L. Riesenberg ,  Mesfin Ejerssa Janka

    IPC: C07C51/265

    CPC classification number: C07C51/265 ,  C07C63/26

    Abstract: Processes for producing terephthalic acid are disclosed, the processes including a step of combining in a reaction medium para-xylene, a solvent comprising water and a saturated organic acid having from 2-4 carbon atoms, and an oxygen-containing gas, at a temperature for example from about 145° C. to about 175° C., in the presence of a catalyst composition comprising cobalt, manganese, zirconium, and bromine, wherein the zirconium is present in the reaction medium in an amount, for example, from 1 ppm to 50 ppm with respect to the weight of the liquid in the reaction medium.

    Abstract translation: 公开了制备对苯二甲酸的方法，该方法包括在反应介质中将对二甲苯，包含水和含有2-4个碳原子的饱和有机酸的溶剂和含氧气体在一定温度下混合的步骤 例如约145℃至约175℃，在包含钴，锰，锆和溴的催化剂组合物存在下，其中锆以例如1的量存在于反应介质中 相对于反应介质中液体的重量为ppm至50ppm。

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