DC ARC FURNACE FOR MELTING AND GASIFYING WASTE

To provide an apparatus for gasifying and vitrifying waste which comprises a plasma arc furnace having two movable graphite electrodes.SOLUTION: A furnace comprises air-cooled bottom electrodes configured to transfer current through a slag melt. The furnace is completely sealed and comprises gas tig...

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Bibliographische Detailangaben
Hauptverfasser:	ALI SHAHVERDI, WILLIAM KREKLEWETZ, HUGO FORTIN-BLANCHETTE, PIERRE CARABIN
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BLASTING CARBURETTING AIR OR OTHER GASES CHEMISTRY DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS,IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KINDOF FURNACE FUELS FURNACES FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL HEATING KILNS LIGHTING LUBRICANTS MECHANICAL ENGINEERING METALLURGY OPEN SINTERING OR LIKE APPARATUS OVENS PEAT PETROLEUM, GAS OR COKE INDUSTRIES PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROMSOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES RETORTS TECHNICAL GASES CONTAINING CARBON MONOXIDE WEAPONS
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Beschreibung
Zusammenfassung:	To provide an apparatus for gasifying and vitrifying waste which comprises a plasma arc furnace having two movable graphite electrodes.SOLUTION: A furnace comprises air-cooled bottom electrodes configured to transfer current through a slag melt. The furnace is completely sealed and comprises gas tight electrode seals configured to control reducing conditions inside the furnace. An electric circuit is configured to be switched from a transferred mode of superheating into a non-transferred mode of heating, thereby allowing the furnace to be restarted when slag is frozen.SELECTED DRAWING: Figure 1 【課題】本発明は、廃棄物をガス化及びガラス化するための装置であって、２つの可動式グラファイト電極を具備するプラズマアーク炉を備えている装置に関する。【解決手段】炉は、スラグ溶融物を貫通して電流を伝送するよう構成されている空冷式底部電極を含んでいる。炉は完全に密封されており、炉の内部の還元状態を制御するように構成されている気密電極シールを備えている。電気回路は、過熱の伝達モードから加熱の非伝達モードに切り替わるように構成されており、これによりスラグが凍結した場合に炉を再稼働させることができる。【選択図】図１