EP 2588440 A1 20130508 - METHOD FOR PRODUCING FORMIC ACID
Title (en)
METHOD FOR PRODUCING FORMIC ACID
Title (de)
VERFAHREN ZUR HERSTELLUNG VON AMEISENSÄURE
Title (fr)
PROCÉDÉ DE PRODUCTION D'ACIDE FORMIQUE
Publication
Application
Priority
- EP 10187280 A 20101012
- EP 10167679 A 20100629
- EP 2011060770 W 20110628
- EP 11728826 A 20110628
Abstract (en)
[origin: WO2012000964A1] The invention relates to a method for obtaining formic acid by the thermal separation of a flow containing formic acid and a tertiary amine (I), wherein a liquid flow which contains formic acid and a tertiary amine (I) in a molar ratio of 0.5 to 5 is produced by combining tertiary amine (I) and a source of formic acid, 10 to 100 wt % of the secondary components contained in said flow are separated, and formic acid is removed by distillation from the resulting liquid flow in a distillation device at a bottoms temperature of 100 to 300°C and a pressure of 30 to 3000 hPa abs, wherein the bottoms product from the distillation device is separated into two liquid phases and the upper liquid phase is returned to the source of formic acid and the lower liquid phase is returned for separation of the secondary components and/or to the distillation device.
IPC 8 full level
C07C 51/44 (2006.01); C07C 51/50 (2006.01); C07C 53/02 (2006.01)
CPC (source: EP KR)
C07C 51/09 (2013.01 - EP); C07C 51/44 (2013.01 - EP KR); C07C 51/50 (2013.01 - EP KR); C07C 53/02 (2013.01 - KR)
Citation (search report)
See references of WO 2012000964A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
WO 2012000964 A1 20120105; BR 112012032211 A2 20161129; CA 2801580 A1 20120105; CN 102958894 A 20130306; CN 102958894 B 20150415; EP 2588440 A1 20130508; JP 2013533869 A 20130829; KR 20130088838 A 20130808; RU 2013103601 A 20140810; SG 186264 A1 20130130
DOCDB simple family (application)
EP 2011060770 W 20110628; BR 112012032211 A 20110628; CA 2801580 A 20110628; CN 201180031930 A 20110628; EP 11728826 A 20110628; JP 2013517239 A 20110628; KR 20137002200 A 20110628; RU 2013103601 A 20110628; SG 2012090742 A 20110628