Method for the purification of acetic acid and acrylic acid
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C07C-051/44
C07C-067/08
C07C-051/215
C07C-051/46
출원번호
US-0787683
(2014-05-19)
등록번호
US-9944582
(2018-04-17)
국제출원번호
PCT/US2014/038573
(2014-05-19)
국제공개번호
WO2014/189829
(2014-11-27)
발명자
/ 주소
Karime, Mustapha N.
Baksh, Faisal
Bashir, Mubarik
Nawaz, Zeeshan
출원인 / 주소
SAUDI BASIC INDUSTRIES CORPORATION
대리인 / 주소
Cantor Colburn LLP
인용정보
피인용 횟수 :
0인용 특허 :
10
초록▼
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
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.
대표청구항▼
1. 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) contacting the crude product mixture with a high-boiling solvent to provide a high-boilin
1. 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) contacting the crude product mixture with a high-boiling solvent to provide a high-boiling solvent containing acrylic acid, and a vapor stream containing acetic acid;c) purifying the acrylic acid by distillation using the high-boiling solvent containing acrylic acid;d) introducing the vapor stream containing acetic acid and a low-boiling solvent into a counter-current packed absorption column to absorb the acetic acid in the low-boiling solvent; ande) purifying the acetic acid by separate distillation step using the low-boiling solvent absorbing acetic acid;wherein the high-boiling solvent has a boiling point greater than 105° C.,wherein the low-boiling solvent has a boiling point lower than acetic acid. 2. The method according to claim 1, further comprising reacting the acrylic acid with the high-boiling solvent to produce an acrylate. 3. The method according to claim 1, further comprising purifying the crude product mixture in the presence of an inhibitor to prevent acid polymerization. 4. The method according to claim 3, wherein the inhibitor comprises a phenolic derivative. 5. The method according to claim 3, wherein the inhibitor comprises hydroquinone, or an ether of hydroquinone, or a mixture thereof. 6. The method according to claim 3, wherein the inhibitor comprises a phenothiazine derivative. 7. The method according to claim 3, wherein the inhibitor comprises quinone, or benzoquinone, or a mixture thereof. 8. The method according to claim 3, wherein the inhibitor comprises a metal thiocarbamate. 9. The method according to claim 3, wherein the inhibitor comprises copper dibutyldithiocarbamate, or copper diethyldithiocarbamate, or copper salicylate, or a mixture thereof. 10. The method according to claim 3, wherein the inhibitor comprises an amine. 11. The method according to claim 3, wherein the inhibitor comprises a hydroxylamine, or a phenyldiamine, or a mixture thereof. 12. The method according to claim 1, further comprising the addition of oxygen for inhibitor activation. 13. The method according to claim 1, wherein the high-boiling solvent comprises an alcohol. 14. The method according to claim 1, wherein the high-boiling solvent comprises a linear alcohol. 15. The method according to claim 1, wherein the high-boiling solvent comprises hexanol, or heptanol, or octanol, or a mixture thereof. 16. The method according to claim 1, wherein the high-boiling solvent comprises a branched alcohol. 17. The method according to claim 1, wherein the high-boiling solvent comprises 2-ethyl hexanol. 18. The method according to claim 1, wherein the high-boiling solvent comprises a polyhydric alcohol. 19. The method according to claim 1, wherein the high-boiling solvent comprises ethylene glycol, or 1,3-propane diol, or 1,4-butane diol, or a mixture thereof. 20. The method according to claim 1, wherein the high-boiling solvent comprises an amino alcohol. 21. The method according to claim 1, wherein the high-boiling solvent comprises 2-dimethyl aminoethanol, or 2-diethyl aminoethanol, or a mixture thereof. 22. The method according to claim 1, wherein the low-boiling solvent comprises isopropyl acetate, or water, or a mixture thereof. 23. The method according to claim 1, wherein the partial oxidation reaction comprises propane as the starting material and a Mo-V-Ga-Pd-Nb-X mixed metal catalyst wherein X is La, Te, Ge, Zn, Si, In or W. 24. The method according to claim 1, wherein the method further comprises the high-boiling solvent reacting downstream of the acrylic acid purification with the acrylic acid to form an acrylate. 25. The method according to claim 1, wherein the crude product mixture further comprises water.
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이 특허에 인용된 특허 (10)
Emmons William D. (Huntingdon Valley PA), Ester of Michael addition homopolymers of acrylic acid.
Josefina Tseng Chapman ; James Clarence Day ; Donald Alan Ebert ; Thomas Albert Kaminski ; Robert Michael Mason ; Chorng-Shyuan Tsay, Process for preparing (meth)acrylic acid.
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