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1. EP0877647 - REGENERATIVE METHOD AND COMPOSITION FOR REMOVING SULFIDES FROM GAS STREAMS

Office
European Patent Office
Application Number 97902872
Application Date 09.01.1997
Publication Number 0877647
Publication Date 18.11.1998
Publication Kind B1
IPC
B01D 53/34
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
34Chemical or biological purification of waste gases
B01D 53/48
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
34Chemical or biological purification of waste gases
46Removing components of defined structure
48Sulfur compounds
B01D 53/52
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
34Chemical or biological purification of waste gases
46Removing components of defined structure
48Sulfur compounds
52Hydrogen sulfide
B01D 53/77
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
34Chemical or biological purification of waste gases
74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
77Liquid phase processes
CPC
B01D 53/48
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols,
34Chemical or biological purification of waste gases
46Removing components of defined structure
48Sulfur compounds
B01D 53/52
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols,
34Chemical or biological purification of waste gases
46Removing components of defined structure
48Sulfur compounds
52Hydrogen sulfide
B01D 2251/80
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2251Reactants
80Organic bases or salts
Applicants QUAKER CHEM CORP
Inventors TRAUFFER EDWARD A
CAGLAR MUGE
Designated States
Priority Data 08587837 10.01.1996 US
9700324 09.01.1997 US
Title
(DE) REGENERATIVES VERFAHREN UND ZUSAMMENSETZUNG ZUR ENTFERNUNG VON SULFIDEN AUS GASSTRÖMEN
(EN) REGENERATIVE METHOD AND COMPOSITION FOR REMOVING SULFIDES FROM GAS STREAMS
(FR) PROCEDE ET COMPOSITION DE REGENERATION DESTINES A ENLEVER DES SULFURES DE COURANTS GAZEUX
Abstract
(EN)
A method and composition for the removal of sulfides from gaseous streams. The method includes contacting the sulfide-containing gas stream with an aqueous scavenging mixture which includes a scavenging compound, an inorganic ion and an oxidation catalyst: regenerating at least a portion of the scavenging compound with an oxygen-containing gas and returning at least a portion of the aqueous scavenging mixture to the contacting zone. A scavenging compound consisting of the reaction product between an aldehyde and an amine is also provided.

(FR)
On décrit un procédé ainsi qu'une composition destinés à enlever des sulfures de courants gazeux. Ce procédé consiste à mettre en contact le courant gazeux contenant les sulfures avec un mélange aqueux d'élimination, lequel comporte un composé d'élimination, un ion inorganique ainsi qu'un catalyseur d'oxydation, puis à régénérer au moins une portion du composé d'élimination à l'aide d'un gaz contenant de l'oxygène, et enfin à renvoyer au moins une portion du mélange d'élimination aqueux vers la zone de mise en contact. On décrit également un composé d'élimination consistant en un produit de réaction entre un aldéhyde et une amine.