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1. EP2307114 - ALKYLENE OXIDE PURIFICATION COLUMN WITH TWO INTERNAL CONDENSERS

Office
European Patent Office
Application Number 09789005
Application Date 24.07.2009
Publication Number 2307114
Publication Date 13.04.2011
Publication Kind B1
IPC
B01D 3/14
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
3Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
14Fractional distillation
B01D 3/20
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
3Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
14Fractional distillation
16Fractionating columns in which vapour bubbles through liquid
18with horizontal bubble plates
20Bubble caps; Risers for vapour; Discharge pipes for liquid
B01D 3/22
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
3Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
14Fractional distillation
16Fractionating columns in which vapour bubbles through liquid
22with horizontal sieve plates or grids; Construction of sieve plates or grids
B01D 3/42
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
3Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
42Regulation; Control
B01D 5/00
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
5Condensation of vapours; Recovering volatile solvents by condensation
C07D 301/32
CCHEMISTRY; METALLURGY
07ORGANIC CHEMISTRY
DHETEROCYCLIC COMPOUNDS
301Preparation of oxiranes
32Separation; Purification
CPC
B01D 5/0063
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
5Condensation of vapours; Recovering volatile solvents by condensation
0057in combination with other processes
006with evaporation or distillation
0063Reflux condensation
Applicants DOW TECHNOLOGY INVESTMENTS LLC
Inventors SZUL JOHN F
MCCAIN JAMES H
PFEFFER FLOYD L
ANDRESEN HARVEY E
FAIRCHILD PHILLIP R
NEWMAN KENT E
Designated States
Priority Data 13749408 31.07.2008 US
Title
(DE) ALKYLENOXIDREINIGUNGSSÄULE MIT ZWEI INNEREN KONDENSATOREN
(EN) ALKYLENE OXIDE PURIFICATION COLUMN WITH TWO INTERNAL CONDENSERS
(FR) COLONNE DE PURIFICATION D'OXYDE D'ALKYLÈNE COMPRENANT DEUX CONDENSEURS INTERNES
Abstract
(EN) Embodiments of the present disclosure include processes and systems for recovering alkylene oxide. System embodiments include a stripping section (202) located in an alkylene oxide recovery column to convert a feed stream comprising to a first gas phase portion comprising alkylene oxide, a condensing zone comprising at least a first condenser (207) and a second condenser (209) configured in series, and a reabsorption region (204) located in the alkylene oxide recovery column above the last of the at least two condensers.
(FR) Dans divers modes de réalisation, l'invention concerne des procédés et des systèmes d'extraction d'oxyde d'allène. Les systèmes comprennent une zone de strippping disposée dans une colonne d'extraction d'oxyde d'allène, destinée à convertir une charge comprenant une première partie en phase gazeuse contenant de l'oxyde d'allène, une zone de condensation disposée en série, et 'une zone de réabsorption située dans ladite colonne d'extraction au-dessus des condenseurs (au moins deux).