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1. (WO1997018028) GAS TREATING PROCESS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/018028 International Application No.: PCT/US1996/015314
Publication Date: 22.05.1997 International Filing Date: 25.09.1996
Chapter 2 Demand Filed: 21.02.1997
IPC:
B01D 53/52 (2006.01) ,C01B 3/06 (2006.01) ,C01B 17/05 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
53
Separation 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
34
Chemical or biological purification of waste gases
46
Removing components of defined structure
48
Sulfur compounds
52
Hydrogen sulfide
C CHEMISTRY; METALLURGY
01
INORGANIC CHEMISTRY
B
NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
3
Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
02
Production of hydrogen or of gaseous mixtures containing hydrogen
06
by reaction of inorganic compounds containing electro-positively bound hydrogen, e.g. water, acids, bases, ammonia, with inorganic reducing agents
C CHEMISTRY; METALLURGY
01
INORGANIC CHEMISTRY
B
NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
17
Sulfur; Compounds thereof
02
Preparation of sulfur; Purification
04
from gaseous sulfur compounds including gaseous sulfides
05
by wet processes
Applicants:
MARATHON OIL COMPANY [US/US]; 539 South Main Street Findlay, OH 45840, US
Inventors:
PLUMMER, Mark, A.; US
WAYCUILIS, John, J.; US
Agent:
EBEL, Jack, E. ; Marathon Oil Company P.O. Box 269 Littleton, CO 80160-0269, US
Priority Data:
08/557,88814.11.1995US
Title (EN) GAS TREATING PROCESS
(FR) PROCEDE DE TRAITEMENT DE GAZ
Abstract:
(EN) A process for removing hydrogen sulfide and other components, such as water, low molecular weight hydrocarbons, and carbon dioxide, which are contained in a gaseous feed stream and converting hydrogen sulfide to elemental sulfur and hydrogen. In accordance with the process, a gaseous feed stream containing hydrogen sulfide and other components is contacted with a polar organic solvent having a quinone and a complexing agent dissolved therein. The complexing agent must have a pKb value of less than about 13.0. Reaction of the hydrogen sulfide in the gaseous feed stream with quinone results in an increased conversion of quinone to hydroquinone at low reactor temperatures and H2S partial pressures and in increased sulfur recovery. In additon, the presence of a complexing agent increases hydrogen production selectivity in the dehydrogenation of hydroquinone to quinone and hydrogen. The polar organic solvent also functions to dissolve a significant portion of the other components from the gaseous feed stream which are separated and recovered as products.
(FR) Procédé permettant d'éliminer l'hydrogène sulfuré et d'autres constituants, tels que de l'eau, des hydrocarbures de faible poids moléculaire, et du dioxyde de carbone, qui sont présents dans un flux d'alimentation gazeux et de convertir l'hydrogène sulfuré en soufre et en hydrogène élémentaires. Selon ledit procédé, un flux d'alimentation gazeux contenant de l'hydrogène sulfuré et d'autres constituants est mis en contact avec un solvant organique polaire possédant une quinone et un agent complexant dissous dans ledit solvant. L'agent complexant doit avoir une valeur pKb inférieure à environ 13,0. La réaction de l'hydrogène sulfuré présent dans le flux d'alimentation gazeux avec la quinone entraîne une conversion accrue de la quinone en hydroquinone à des températures de réacteur et à des pressions partielles de H2S faibles, ainsi qu'une récupération accrue de soufre. De plus, la présence d'un agent complexant augmente la sélectivité de production d'hydrogène dans la déshydrogénation de l'hydroquinone en quinone et en hydrogène. Le solvant organique polaire fonctionne également pour dissoudre une partie considérable des autres constituants du flux d'alimentation gazeux, qui sont séparés et récupérés en tant que produits isolés.
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, HU, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, TJ, TM, TR, TT, UA, UG, UZ, VN
African Regional Intellectual Property Organization (ARIPO) (KE, LS, MW, SD, SZ, UG)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
CA2230849AU1996071176