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1. WO1995035149 - METHOD AND APPARATUS FOR PURIFICATION OF VENTILATING AIR

Publication Number WO/1995/035149
Publication Date 28.12.1995
International Application No. PCT/SE1995/000765
International Filing Date 21.06.1995
Chapter 2 Demand Filed 19.01.1996
IPC
B01D 53/12 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
02by adsorption, e.g. preparative gas chromatography
06with moving adsorbents
10with dispersed adsorbents
12according to the "fluidised technique"
B01J 8/28 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
18with fluidised particles
24according to "fluidised-bed" technique
26with two or more fluidised beds, e.g. reactor and regeneration installations
28the one above the other
CPC
B01D 53/12
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,
02by adsorption, e.g. preparative gas chromatography
06with moving adsorbents, e.g. rotating beds
10with dispersed adsorbents
12according to the "fluidised technique"
B01J 8/28
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
18with fluidised particles
24according to "fluidised-bed" technique
26with two or more fluidised beds, e.g. reactor and regeneration installations
28the one above the other
Applicants
  • CHEMATUR ENGINEERING AB [SE]/[SE] (AllExceptUS)
  • NORÉEN, Lars [SE]/[SE] (UsOnly)
Inventors
  • NORÉEN, Lars
Agents
  • AXELSSON, Rolf
Priority Data
9402183-921.06.1994SE
Publication Language English (EN)
Filing Language Swedish (SV)
Designated States
Title
(EN) METHOD AND APPARATUS FOR PURIFICATION OF VENTILATING AIR
(FR) PROCEDE ET DISPOSITIF DE PURIFICATION D'AIR DE VENTILATION
Abstract
(EN)
A method of cleaning ventilation air that is contaminated with at least two organic solvents, wherein the ventilation air is caused to pass through fluidized beds that contain material capable of adsorbing the solvents and thereafter capable of releasing the organic substances present in the solvents by desorption. The ventilation air is caused to pass first through at least one first fluidized bed (2, 3) that contains an adsorbent material particularly suited for adsorption of one of the organic substances, and is then passed through at least one second fluidized bed (4, 5) that contains an adsorbent material particularly suited for adsorption of the other of said organic substances. The adsorbents are then tapped off separately from the first and the second beds for regeneration of the adsorbents by desorption of the organic substances, whereafter the absorbents are returned to their respective beds. The invention also relates to an arrangement for use when carrying out the method.
(FR)
La présente invention concerne un procédé de nettoyage d'air de ventilation contaminé par au moins deux solvants organiques. Le procédé consiste à faire passer l'air de ventilation à travers des lits fluidisés contenant une substance capable d'adsorber les solvants, et de libérer par désorption les substances organiques présentes dans les solvants. L'air de ventilation traverse au moins un premier lit fluidisé (2, 3) contenant une substance adsorbante convenant particulièrement à l'adsorption de l'une des substances organiques, puis au moins un second lit fluidisé (4, 5) contenant une substance adsorbante convenant particulièrement à l'adsorption de l'autre desdites substances organiques. Par la suite, pour régénérer les adsorbants par désorption des substances organiques, lesdits adsorbants sont enlevés séparément des premier et des second lits fluidisés, puis renvoyés sur leurs lits fluidisés respectifs. L'invention concerne également un dispositif utilisable pour la mise en ÷uvre de ce procédé.
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