Process for the high-temperature gasification of heterogeneous waste
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United States of America Patent
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-
Aug 4, 1998
Grant Date -
N/A
app pub date -
Feb 13, 1997
filing date -
Jun 10, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for the high-temperature gasification of possibly thermally pretreated heterogeneous wastes, in which oxygen is injected into the gasification bed with the aid of water-cooled oxygen lances. The oxygen is heated by an independent pilot flame and accelerated to speeds approaching the speed of sound. Accordingly, the oxygen lances cannot be plugged by melted charge components not susceptible to gasification because the pilot flame is driven independently of the oxygen-lance flow. A pulsing, phase-shifted impact from several oxygen lances arranged in a ring produces a circulating flow of material in the gasification zone, compensating the heterogeneity of the charge in the case of a waste gasification.
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