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1. WO1987007938 - DEVICE AND METHOD FOR OPTIMIZING COMBUSTION IN OPEN CHAMBER FURNACES FOR FIRING CARBON BLOCKS

Publication Number WO/1987/007938
Publication Date 30.12.1987
International Application No. PCT/FR1987/000213
International Filing Date 12.06.1987
IPC
F23N 5/00 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
NREGULATING OR CONTROLLING COMBUSTION
5Systems for controlling combustion
F27B 13/02 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
27FURNACES; KILNS, OVENS OR RETORTS
BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
13Furnaces with both stationary charge and progression of heating, e.g. of ring type, of type in which segmental kiln moves over stationary charge
02of multiple-chamber type with permanent partitions; Combinations of furnaces
CPC
F23N 5/003
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
23COMBUSTION APPARATUS; COMBUSTION PROCESSES
NREGULATING OR CONTROLLING COMBUSTION
5Systems for controlling combustion
003using detectors sensitive to combustion gas properties
F27B 13/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
27FURNACES; KILNS; OVENS; RETORTS
BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
13Furnaces with both stationary charge and progression of heating, e.g. of ring type, of type in which segmental kiln moves over stationary charge
02of multiple-chamber type with permanent partitions; Combinations of furnaces
Y02P 10/25
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
10Technologies related to metal processing
25Process efficiency
Applicants
  • ALUMINIUM PECHINEY [FR]/[FR] (AllExceptUS)
  • DREYER, Christian [FR]/[FR] (UsOnly)
  • THOMAS, Jean-Claude [FR]/[FR] (UsOnly)
  • VANVOREN, Claude [FR]/[FR] (UsOnly)
Inventors
  • DREYER, Christian
  • THOMAS, Jean-Claude
  • VANVOREN, Claude
Agents
  • PASCAUD, Claude
Priority Data
86/0898717.06.1986FR
87/0546614.04.1987FR
Publication Language French (fr)
Filing Language French (FR)
Designated States
Title
(EN) DEVICE AND METHOD FOR OPTIMIZING COMBUSTION IN OPEN CHAMBER FURNACES FOR FIRING CARBON BLOCKS
(FR) DISPOSITIF ET PROCEDE D'OPTIMISATION DE LA COMBUSTION DANS LES FOURS A CHAMBRES POUR LA CUISSON DE BLOCS CARBONES
Abstract
(EN) Method and device for optimizing the combustion in a so-called turning-fire furnace with open chambers for the firing of carbon blocks, said furnace comprising a plurality of pre-heating, firing and cooling chambers which are aligned in series, each chamber being comprised by alternatingly juxtaposing hollow heating partition walls wherein combustion gases circulate and cavities wherein are piled the carbon blocks to be fired, the combustion gases being extracted through a suction pipe connected by nozzles to each of the heating partition walls of the first natural pre-heating chamber. The device is caracterized in that each nozzle (2) of the suction pipe is provided with a moving obturation flap (1) controlled by a motor (2), with means for measuring the temperature and the depression in the corresponding heating partition wall (5), with means (19, 20, 21) for measuring the opacity by reflection of the smoke coming out of each heating wall, and with means for servo-controlling the position of the obturation flap (11) hence the flow rate in each wall to the combined measurement of the opacity of the smoke, the temperature and the depression.
(FR) Procédé et dispositif d'optimisation de la combustion dans un four à chambres ouvertes dit à feu tournant pour la cuisson de blocs carbonés, ce four comportant une pluralité de chambres de préchauffage, de cuisson et de refroidissement alignée en séries, chaque chambre étant constituée par la juxtaposition, en alternance, de cloisons chauffantes creuses dans lesquelles circulent les gaz de combustion et d'alvéoles dans lesquelles sont empilés les blocs carbonés à cuire, les gaz de combustion étant extraits par une pipe d'aspiration reliée par des ajutages à chacune des cloisons chauffantes de la première chambre en préchauffage naturel. Le dispositif est caractérisé en ce que chaque ajutage (2) de la pipe d'aspiration est muni d'un volet d'obturation mobile (1), commandé par un moteur (2), d'un moyen de mesure de la température et de la dépression dans la cloison chauffante (5) correspondante, d'un moyen (19, 20, 21) de mesure de l'opacité par réflexion de la fumée sortant de chaque cloison chauffante, et d'un moyen pour asservir la position du volet d'obturation (11) donc le débit dans chaque cloison, à la mesure combinée de l'opacité de la fumée, de la température et de la dépression.
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