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1. WO1981003166 - METHOD OF OBTAINING SULPHUR TRIOXIDE

Publication Number WO/1981/003166
Publication Date 12.11.1981
International Application No. PCT/SU1980/000071
International Filing Date 05.05.1980
IPC
B01J 8/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
8Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
02with stationary particles, e.g. in fixed beds
C01B 17/76 2006.01
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF
17Sulfur; Compounds thereof
69Sulfur trioxide; Sulfuric acid
74Preparation
76by contact processes
C01B 17/80 2006.01
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF
17Sulfur; Compounds thereof
69Sulfur trioxide; Sulfuric acid
74Preparation
76by contact processes
80Apparatus
CPC
B01J 8/02
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
8Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
02with stationary particles, e.g. in fixed beds
C01B 17/76
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
17Sulfur; Compounds thereof
69Sulfur trioxide; Sulfuric acid
74Preparation
76by contact processes
C01B 17/80
CCHEMISTRY; METALLURGY
01INORGANIC CHEMISTRY
BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; ; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
17Sulfur; Compounds thereof
69Sulfur trioxide; Sulfuric acid
74Preparation
76by contact processes
80Apparatus
Applicants
Inventors
Priority Data
SU80/0007105.05.1980WO
Publication Language Russian (RU)
Filing Language Russian (RU)
Designated States
Title
(EN) METHOD OF OBTAINING SULPHUR TRIOXIDE
(FR) PROCEDE D"OBTENTION D"ANHYDRIDE SULFURIQUE
Abstract
(EN)
A method of obtaining sulfur trioxide which consists in oxidizing sulphur dioxide in a non-moving layer of catalyst, is carried out either by periodically reversing, every 10-200 minutes, the direction of flow of the reaction mass containing sulphur dioxide through the layer of catalyst, or by changing the temperature of that reaction mass, supplied to the layer of catalyst, from 20-200 C up to 350-600 C during 10-200 minutes.
(FR)
Procede d"obtention d"anhydride sulfurique consistant a oxyder l"anhydride sulfureux dans une couche fixe d"un catalyseur soit en inversant periodiquement, apres toutes les 10-200 minutes, le sens d"ecoulement de la masse de reaction contenant l"anhydride sulfureux au travers de la couche de catalyseur, soit en changeant la temperature de cette masse de reaction, amenee sur la couche de catalyseur, de 20-200 C jusqu"a 350-600 C pendant 10-200 minutes.
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