MY136121A - Method for removal of mw176 cyclic acetal and solid acid catalyzed reactive stripping of impurities formed during the production of 1, 3-propanediol - Google Patents

Method for removal of mw176 cyclic acetal and solid acid catalyzed reactive stripping of impurities formed during the production of 1, 3-propanediol

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Publication number
MY136121A
MY136121A MYPI20034122A MY136121A MY 136121 A MY136121 A MY 136121A MY PI20034122 A MYPI20034122 A MY PI20034122A MY 136121 A MY136121 A MY 136121A
Authority
MY
Malaysia
Prior art keywords
propanediol
cyclic acetal
pdo
production
mixture
Prior art date
Application number
Inventor
Robert Lawrence Blackbourn
Stephen Edward Brewer
Zaida Diaz
Glenn Charles Komplin
Joseph Broun Powell
Paul Richard Weider
Original Assignee
Shell Int Research
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shell Int Research filed Critical Shell Int Research
Publication of MY136121A publication Critical patent/MY136121A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

THIS INVENTION DESCRIBES IMPROVEMENTS UPON A PROCESS FOR THE PRODUCTION OF 1,3-PROPANEDIOL (PDO) WHEREIN AN AQUEOUS SOLUTION OF 3-HYDROXYPROPANAL (HPA) IS FORMED AND THE HPA IS SUBJECTED TO HYDROGENATION TO PRODUCE A CRUDE PDO MIXTURE. ONE IMPROVEMENT ON THIS PROCESS COMPRISES TREATING THE CRUDE PDO MIXTURE WITH AN ACIDIC ZEOLITE, AN ACID FORM CATION EXCHANGE RESIN, OR A SOLUBLE ACID TO CONVERT THE MW176 CYCLIC ACETAL TO MORE VOLATILE MATERIALS WHICH CAN BE EASILY SEPARATED FROM PDO BY DISTILLATION. ANOTHER IMPROVEMENT INVOLVES REMOVING WATER FROM THE CRUDE 1,3-PROPANEDIOL MIXTURE, CONTACTING THE RESULTING MIXTURE WITH A SOLID ACID PURIFIER AT A TEMPERATURE OF FROM ABOUT 50 TO ABOUT 250 °C TO CONVERT THE MW 132 CYCLIC ACETAL TO MORE VOLATILE CYCLIC ACETALS, AND SEPARATING THE MORE VOLATILE CYCLIC ACETALS FROM THE 1,3-PROPANEDIOL BY DISTILLATION OR GAS STRIPPING.
MYPI20034122 2002-11-01 2003-10-29 Method for removal of mw176 cyclic acetal and solid acid catalyzed reactive stripping of impurities formed during the production of 1, 3-propanediol MY136121A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US42309702P 2002-11-01 2002-11-01
US42314002P 2002-11-01 2002-11-01

Publications (1)

Publication Number Publication Date
MY136121A true MY136121A (en) 2008-08-29

Family

ID=36114224

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI20034122 MY136121A (en) 2002-11-01 2003-10-29 Method for removal of mw176 cyclic acetal and solid acid catalyzed reactive stripping of impurities formed during the production of 1, 3-propanediol

Country Status (4)

Country Link
AR (1) AR041870A1 (en)
MY (1) MY136121A (en)
RU (1) RU2320634C2 (en)
TW (1) TWI280957B (en)

Also Published As

Publication number Publication date
TWI280957B (en) 2007-05-11
AR041870A1 (en) 2005-06-01
RU2005116688A (en) 2006-02-27
TW200407284A (en) 2004-05-16
RU2320634C2 (en) 2008-03-27

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