公开(公告)号：US08916719B2

公开(公告)日：2014-12-23

申请号：US13798235

申请日：2013-03-13

Applicant: Eastman Chemical Company

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

IPC: C07D307/68 ,  F01K27/00

CPC classification number: C07D307/68 ,  F01K27/00

Abstract: Disclosed is a process for producing a dry, purified carboxylic acid product comprising furan-2,5-dicarboxylic acid (FDCA). Also disclosed is a method for treating an oxidation off-gas stream from such a process. The method features solvent as well as energy recovery from the off-gas stream.

Abstract translation: 公开了一种制备包含呋喃-2,5-二羧酸（FDCA）的干燥，纯化的羧酸产物的方法。 还公开了一种从这种方法处理氧化废气流的方法。 该方法具有溶剂以及来自废气流的能量回收。

公开(公告)号：US08772513B2

公开(公告)日：2014-07-08

申请号：US13758088

申请日：2013-02-04

Applicant: Eastman Chemical Company

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

IPC: C07D307/34

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。

公开(公告)号：US20140142327A1

公开(公告)日：2014-05-22

申请号：US13798257

申请日：2013-03-13

Applicant: EASTMAN CHEMICAL COMPANY

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

IPC: F01K21/04 ,  C07D307/68

CPC classification number: F01K21/04 ,  C07D307/68 ,  F01K25/065

Abstract: Disclosed is a process for producing a dry, purified carboxylic acid product comprising furan-2,5-dicarboxylic acid (FDCA). Also disclosed is a method for treating an oxidation off-gas stream from such a process. The method features solvent as well as energy recovery from the off-gas stream.

Abstract translation: 公开了一种制备包含呋喃-2,5-二羧酸（FDCA）的干燥，纯化的羧酸产物的方法。 还公开了一种从这种方法处理氧化废气流的方法。 该方法具有溶剂以及来自废气流的能量回收。

公开(公告)号：US12151188B2

公开(公告)日：2024-11-26

申请号：US17592276

申请日：2022-02-03

Applicant: Eastman Chemical Company ,  North Carolina State University

Inventor： Ashfaq Shahanawaz Shaikh ,  Thomas Allen Puckette ,  Scott Allen Owens ,  Syed Mohammed Maaz ,  Jack R. Edwards

IPC: B01D3/06 ,  B01D3/16 ,  B01D5/00 ,  B01D53/00 ,  B01D53/24 ,  C07C45/28 ,  C10G50/00

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 propane from a mixture of propane and ethane.

公开(公告)号：US11066376B2

公开(公告)日：2021-07-20

申请号：US16718334

申请日：2019-12-18

Applicant: Eastman Chemical Company

Inventor： Kevin John Fontenot ,  Mesfin Ejerssa Janka ,  Kenny Randolph Parker ,  Ashfaq Shahanawaz Shaikh

IPC: C07D307/46

Abstract: Disclosed is a process to produce a purified vapor comprising dialkyl-furan-2,5-dicarboxylate (DAFD). Furan-2,5-dicarboxylic acid (FDCA) and an alcohol in an esterification zone to generate a crude diester stream containing dialkyl furan dicarboxylate (DAFD), unreacted alcohol, 5-(alkoxycarbonyl)furan-2-carboxylic acid (ACFC), and alkyl furan-2-carboxylate (AFC). The esterification zone comprises at least one reactor that has been previously used in an DMT process.

公开(公告)号：US10526301B1

公开(公告)日：2020-01-07

申请号：US16408547

申请日：2019-05-10

Applicant: Eastman Chemical Company

Inventor： Kevin John Fontenot ,  Mesfin Ejerssa Janka ,  Kenny Randolph Parker ,  Ashfaq Shahanawaz Shaikh

IPC: C07D307/46

Abstract: Disclosed is a process to produce a purified vapor comprising dialkyl-furan-2,5-dicarboxylate (DAFD). Furan-2,5-dicarboxylic acid (FDCA) and an alcohol in an esterification zone to generate a crude diester stream containing dialkyl furan dicarboxylate (DAFD), unreacted alcohol, 5-(alkoxycarbonyl)furan-2-carboxylic acid (ACFC), and alkyl furan-2-carboxylate (AFC). The esterification zone comprises at least one reactor that has been previously used in an DMT process.

公开(公告)号：US10421736B2

公开(公告)日：2019-09-24

申请号：US15925867

申请日：2018-03-20

Applicant: Eastman Chemical Company

Inventor： Kevin John Fontenot ,  Mesfin Ejerssa Janka ,  Kenny Randolph Parker ,  Ashfaq Shahanawaz Shaikh

IPC: C07D307/02 ,  C07D307/68 ,  B01D19/00 ,  B01D3/00 ,  C08G63/66 ,  C08G63/672 ,  C08G63/78 ,  B01D3/06 ,  B01D5/00 ,  B01D8/00 ,  C08G63/181

Abstract: Disclosed is a process to produce a purified vapor comprising dialkyl-furan-2,5-dicarboxylate (DAFD). Furan-2,5-dicarboxylic acid (FDCA) and an alcohol in an esterification zone to generate a crude diester stream containing dialkyl furan dicarboxylate (DAFD), unreacted alcohol, 5-(alkoxycarbonyl)furan-2-carboxylic acid (ACFC), and alkyl furan-2-carboxylate (AFC). The esterification zone comprises at least one reactor that has been previously used in an DMT process.

公开(公告)号：US20180369711A1

公开(公告)日：2018-12-27

申请号：US16064984

申请日：2016-12-08

Applicant: Eastman Chemical Company ,  North Carolina State University

Inventor： Ashfaq Shahanawaz Shaikh ,  Thomas Allen Puckette ,  Scott Owens ,  Syed Maaz ,  Jack R. Edwards

IPC: B01D3/16 ,  B01D5/00 ,  C10G50/00 ,  C07C45/28

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 propane from a mixture of propane and ethane.

公开(公告)号：US09249118B2

公开(公告)日：2016-02-02

申请号：US14309010

申请日：2014-06-19

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).

公开(公告)号：US20140364633A1

公开(公告)日：2014-12-11

申请号：US14309010

申请日：2014-06-19

Applicant: EASTMAN CHEMICAL COMPANY

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

IPC: 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。