公开(公告)号：US09944582B2

公开(公告)日：2018-04-17

申请号：US14787683

申请日：2014-05-19

Applicant: SAUDI BASIC INDUSTRIES CORPORATION

Inventor： Mustapha N. Karime ,  Faisal Baksh ,  Mubarik Bashir ,  Zeeshan Nawaz

IPC: C07C51/44 ,  C07C67/08 ,  C07C51/215 ,  C07C51/46

CPC classification number: C07C51/44 ,  C07C51/215 ,  C07C51/46 ,  C07C67/08 ,  C07C57/04 ,  C07C53/08 ,  C07C69/54

Abstract: The present disclosure relates to a method for purifying an acid, wherein the method comprises: a) producing a crude product mixture by a partial oxidation reaction, wherein the crude product mixture comprises acrylic acid and acetic acid; b) purifying the crude product mixture by distillation using a high-boiling solvent to purify the acrylic acid; and c) purifying the crude product mixture by distillation using a low-boiling solvent to purify the acetic acid.

公开(公告)号：US09902678B2

公开(公告)日：2018-02-27

申请号：US14787683

申请日：2014-05-19

Applicant: SAUDI BASIC INDUSTRIES CORPORATION

Inventor： Mustapha N. Karime ,  Faisal Baksh ,  Mubarik Bashir ,  Zeeshan Nawaz

IPC: C07C51/44 ,  C07C67/08 ,  C07C51/215 ,  C07C51/46

Abstract: The present disclosure relates to a method for purifying an acid, wherein the method comprises: a) producing a crude product mixture by a partial oxidation reaction, wherein the crude product mixture comprises acrylic acid and acetic acid; b) purifying the crude product mixture by distillation using a high-boiling solvent to purify the acrylic acid; and c) purifying the crude product mixture by distillation using a low-boiling solvent to purify the acetic acid.

公开(公告)号：US09738585B2

公开(公告)日：2017-08-22

申请号：US14787661

申请日：2014-05-13

Applicant: SAUDI BASIC INDUSTRIES CORPORATION

Inventor： Mustapha N. Karime

IPC: C07C51/16 ,  C07C51/43 ,  C07C51/215

CPC classification number: C07C51/43 ,  C07C51/215 ,  C07C53/08

Abstract: The present disclosures and inventions relate to methods for the preparation of acetic acid via the oxidation of ethane, including the preparation of high purity acetic acid that comprises very low concentrations of formic acid impurity. More specifically, described herein are methods for producing acetic acid comprising: a. producing a crude acetic acid composition comprising formic acid from ethane via ethane oxidation; and then b. purifying the crude acetic acid composition by crystallization to remove formic acid to achieve a purified acetic acid composition; wherein the formic acid is present in the purified acetic acid composition in an amount less than 0.2% by weight, based on the total weight of the purified acetic acid composition.