Arrangement for adding additives to a fluidized bed gasifier for the treatment of inorganic compounds, in particular alkali and chlorine compounds

Abstract

Device (1) for treating raw gas (14) from a fluidized bed gasifier (7), comprising a raw gas path through which the raw gas from the fluidized bed gasifier can be conveyed to a gas purification system, wherein a recirculation cyclone (11), a raw gas cooler (12), and a hot gas filter (15) are associated with the raw gas path, characterized in that at least one additive inlet is associated with the fluidized bed gasifier, the raw gas path, and / or a gas path downstream of the hot gas filter, through which an additive for treating inorganic compounds, in particular alkali and chlorine compounds, can be introduced into the fluidized bed gasifier, into the raw gas, and / or into a gas formed from the raw gas, wherein at least one additive inlet is designed as a suspension injection device (1) through which the additive can be injected as a suspension into the fluidized bed gasifier, into a raw gas area associated with the fluidized bed gasifier, and / or into the raw gas path without pelletizing.and wherein the additive addition can be arranged in a hot region of the raw gas path, in the region of the recirculation cyclone, in the region of the raw gas cooler (12), in a cooler region of the raw gas cooler, downstream of the raw gas cooler, upstream of the hot gas filter, in the region of the hot gas filter and / or downstream of the hot gas filter.

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