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1. WO1991000477 - A METHOD AND A DEVICE IN GAS PURIFYING INSTALLATIONS FOR PREVENTING DISCHARGE OF UNPURIFIED GAS UPON CHANGES OF THE GAS-FLOW DIRECTION

Publication Number WO/1991/000477
Publication Date 10.01.1991
International Application No. PCT/SE1990/000453
International Filing Date 25.06.1990
Chapter 2 Demand Filed 21.01.1990
IPC
F23G 7/06 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
GCREMATION FURNACES; CONSUMING WASTE OR LOW GRADE FUELS BY COMBUSTION
7Methods or apparatus, e.g. incinerators, specially adapted for combustion of specific waste or low grade fuels, e.g. chemicals
06of waste gases or noxious gases, e.g. exhaust gases
CPC
F23G 7/061
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
7Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
06of waste gases or noxious gases, e.g. exhaust gases
061with supplementary heating
F23G 7/066
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
GCREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
7Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
06of waste gases or noxious gases, e.g. exhaust gases
061with supplementary heating
065using gaseous or liquid fuel
066preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator
Applicants
  • ADTEC AB [SE/SE]; Box 8415 S-402 79 Göteborg, SE (AllExceptUS)
  • KÄLLSTRAND, Åke [SE/SE]; SE (UsOnly)
Inventors
  • KÄLLSTRAND, Åke; SE
Agents
  • AWAPATENT AB; Box 53252 S-400 16 Göteborg, SE
Priority Data
8902328-728.06.1989SE
Publication Language English (EN)
Filing Language Swedish (SV)
Designated States
Title
(EN) A METHOD AND A DEVICE IN GAS PURIFYING INSTALLATIONS FOR PREVENTING DISCHARGE OF UNPURIFIED GAS UPON CHANGES OF THE GAS-FLOW DIRECTION
(FR) PROCEDE ET DISPOSITIF DESTINES A DES INSTALLATIONS DE PURIFICATION DE GAZ, EMPÊCHANT LA DECHARGE DE GAZ NON PURIFIE LORS DE CHANGEMENTS DU SENS D'ECOULEMENT DE GAZ
Abstract
(EN)
The invention relates primarily to gas purifying installations operating with reversal of the flow direction and having a double-purpose channel system, i.e. one which upon operation in one through-flow direction forms the inlet channel feeding polluted gas into the installation and upon operation in the opposite flow direction forms the purified gas discharging channel. In accordance with the invention polluted gas is prevented from being discharged into the atmosphere during and immediately after reversal of the flow direction by flushing the purifying installation with fresh air or other clean gas for a predetermined period of time.
(FR)
L'invention concerne essentiellement des installations de purification de gaz dont le fonctionnement prévoit l'inversion du sens d'écoulement, et comportant un système de canal à double usage, c'est-à-dire que lorsqu'il fonctionne dans le sens d'écoulement de passage, il constitue le canal d'admission acheminant du gaz pollué dans l'installation, et lorsqu'il fonctionne dans le sens d'écoulement opposé, il constitue le canal de décharge de gaz purifié. Selon l'invention, on empêche du gaz pollué de se décharger dans l'atmosphère pendant et immédiatement après l'inversion du sens d'écoulement, par nettoyage de l'installation de purification à l'aide d'air neuf ou d'un autre gaz de nettoyage, pendant une durée prédéterminée.
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