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1. (WO1997017284) METHOD FOR OXIDISING H¿2?S TO SULPHUR
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/017284 International Application No.: PCT/FR1996/001699
Publication Date: 15.05.1997 International Filing Date: 30.10.1996
IPC:
B01D 53/86 (2006.01) ,C01B 17/04 (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
74
General processes for purification of waste gases; Apparatus or devices specially adapted therefor
86
Catalytic processes
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
Applicants:
ELF AQUITAINE PRODUCTION [FR/FR]; Tour Elf - 2, place de la Coupole La Défense 6 F-92400 Courbevoie, FR (AllExceptUS)
NOUGAYREDE, Jean [FR/FR]; FR (UsOnly)
PHILIPPE, André [FR/FR]; FR (UsOnly)
SAVIN-PONCET, Sabine [FR/FR]; FR (UsOnly)
Inventors:
NOUGAYREDE, Jean; FR
PHILIPPE, André; FR
SAVIN-PONCET, Sabine; FR
Agent:
BOILLOT, Marc; Elf Aquitaine Production Dépt. Propriété Industrielle Tour Elf F-92078 Paris-La Défense Cédex, FR
Priority Data:
95/1298903.11.1995FR
Title (EN) METHOD FOR OXIDISING H2S TO SULPHUR
(FR) PROCEDE D'OXYDATION DE H2S EN SOUFRE
Abstract:
(EN) An oxidation unit (2a) is used which comprises, in series, three catalytic stages (3a, 4a, 5a) each containing a catalyst for promoting the selective oxidation of H2S to sulphur up to a temperature $g(u)s $m(F) 150 °C. The gas to be processed (16) is fed through each of said stages and air (50, 53a, 55a) is injected into each stage. An H2S fraction of said gas is adiabatically oxidised to sulphur in each of the first two stages (3a, 4a) with an amount of air such that a temperature no higher than $g(u)s is achieved at the outlet of said stages. All the H2S in the gas fed into the final stage (5a) is oxidised in a controlled excess of air at temperatures no higher than $g(u)s. The method is useful for processing H2S-containing gases produced by the hydrogenation/hydrolysis of sulphur plant waste gases.
(FR) On opère dans une unité d'oxydation (2a) comportant, en série, trois étages catalytiques (3a, 4a, 5a), renfermant chacun un catalyseur promoteur de l'oxydation sélective de 1'H2S en soufre jusq'à une température $g(u)s $m(F) 150 °C. On fait passer le gaz à traiter (16) successivement dans chacun desdits étages et injecte de l'air (50, 53a, 55a) dans chaque étage. On oxyde en soufre, de manière adiabatique, une fraction de l'H2S dudit gaz dans chacun des deux premiers étages (3a, 4a) avec une quantité d'air assurant en sortie de ces étages une température d'au plus $g(u)s. On oxyde la totalité de l'H2S du gaz passant dans l'étage final (5a) en excès contrôlé d'air et à des températures d'au plus $g(u)s. Application au traitement de gaz renfermant H2S obtenus par hydrogénation/hydrolyse de gaz résiduaires d'usines à soufre.
Designated States: CA, CH, JP, KZ, NO, RU, TM, UA, US, UZ
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: French (FR)
Filing Language: French (FR)
Also published as:
NO19973030ES2170283EP0801633RU02142403US6017507JP3869856
JPH10512540 CA2209331DE000069618761PT801633FR2740767