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1. WO1997026069 - METHOD FOR REMOVING SULFUR-CONTAINING CONTAMINANTS, AROMATICS AND HYDROCARBONS FROM GAS

Publication Number WO/1997/026069
Publication Date 24.07.1997
International Application No. PCT/NL1997/000018
International Filing Date 20.01.1997
Chapter 2 Demand Filed 17.06.1997
IPC
B01D 53/14 2006.01
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
14by absorption
B01D 53/75 2006.01
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
75Multi-step processes
B01D 53/86 2006.01
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
86Catalytic processes
C01B 17/04 2006.01
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF
17Sulfur; Compounds thereof
02Preparation of sulfur; Purification
04from gaseous sulfur compounds including gaseous sulfides
CPC
B01D 53/1406
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,
14by absorption
1406Multiple stage absorption
B01D 53/75
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
74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
75Multi-step processes
B01D 53/8612
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
74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
86Catalytic processes
8603Removing sulfur compounds
8612Hydrogen sulfide
C01B 17/0408
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
17Sulfur; Compounds thereof
02Preparation of sulfur; Purification
04from gaseous sulfur compounds including gaseous sulfides
0404by processes comprising a dry catalytic conversion of hydrogen sulfide-containing gases, e.g. the Claus process
0408Pretreatment of the hydrogen sulfide containing gases
Applicants
  • STORK ENGINEERS & CONTRACTORS B.V. [NL]/[NL] (AllExceptUS)
  • LAGAS, Jan, Adolf [NL]/[NL] (UsOnly)
  • VAN POL, Theodorus, Joseph, Petrus [NL]/[NL] (UsOnly)
Inventors
  • LAGAS, Jan, Adolf
  • VAN POL, Theodorus, Joseph, Petrus
Agents
  • SMULDERS, Th., A., H., J.
Priority Data
100213419.01.1996NL
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD FOR REMOVING SULFUR-CONTAINING CONTAMINANTS, AROMATICS AND HYDROCARBONS FROM GAS
(FR) PROCEDE POUR ELIMINER LES CONTAMINANTS A TENEUR EN SOUFRE, LES AROMATIQUES ET LES HYDROCARBURES CONTENUS DANS UN GAZ
Abstract
(EN)
The invention relates to a method for removing sulfur-containing contaminants in the form of mercaptans and H2S from a hydrocarbon gas, which may also contain CO2 and higher aliphatic and aromatic hydrocarbons, and recovering elemental sulfur, wherein in a first absorption step the sulfur-containing contaminants are removed from the gas, to form on the one hand a purified gas stream and on the other hand a sour gas, which sour gas is hydrogenated in order to convert the greater part of the mercaptans to H2S, whereafter the hydrogenated sour gas is fed to a second absorption stage in which the sour gas is separated into an H2S-enriched first gas stream, which is fed to a Claus plant, followed by a selective oxidation step of H2S to elemental sulfur in the tail gas, and an H2S-reduced second gas stream, which second gas stream is combusted.
(FR)
Cette invention se rapporte à un procédé pour éliminer les contaminants à teneur en soufre, sous la forme de mercaptans et H2S, contenus dans un gaz d'hydrocarbures, qui peut également renfermer du CO2 et des hydrocarbures aliphatiques et aromatiques supérieurs, puis à récupérer le soufre élémentaire. Dans une première phase d'absorption de ce procédé, les contaminants à teneur en soufre sont retirés du gaz, pour former d'une part un courant de gaz purifié et d'autre part un gaz sulfureux, lequel est hydrogéné pour convertir la majeure partie des mercaptans en H2S, puis le gaz sulfureux hydrogéné est amené à une seconde phase d'absorption, dans laquelle le gaz sulfureux est séparé en un premier courant de gaz enrichi en H2S, qui est amené à une installation de Claus, suivie par une étape d'oxydation sélective de H2S en soufre élémentaire dans le gaz de queue, et en un second courant de gaz à teneur réduite en H2S, ce second courant de gaz étant brûlé.
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