Method and arrangement for removing solid particles and tar...

B - Operations – Transporting – 01 – D

Patent

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B01D 51/00 (2006.01)

Patent

CA 2748182

A method and arrangement for removing solid particles and tar component from carbon monoxide gas. In the method, carbon monoxide gas is conducted from a ferroalloy smelting furnace to a gas scrubber, the carbon monoxide gas is scrubbed in the gas scrubber by a liquid medium for removing part of the solid particles, the carbon monoxide gas is conducted from the gas scrubber to a blower, the flow rate of the carbon monoxide gas is increased by the blower, and the carbon monoxide gas is conducted to a particulate filter and the remaining solid particles are essentially filtered in the particulate filter from the carbon monoxide gas. Prior to conducting the carbon monoxide gas to the particulate filter, it is conducted to a particle feeder (4), where finely divided adsorbent particles (A) are fed in the carbon monoxide gas for adhering the tar component on the surface of the adsorbent particles, and the carbon monoxide gas flow containing adsorbent particles is conducted to the particulate filter, in which case the tar component adhered on the adsorbent particles is discharged in the particulate filter.

L'invention porte sur un procédé et un agencement pour l'élimination de particules solides et d'un composant goudron à partir de monoxyde de carbone gazeux. Dans le procédé, du monoxyde de carbone est acheminé d'un four de fusion de ferro-alliage vers un laveur de gaz, le monoxyde de carbone gazeux est lavé dans le laveur de gaz par un milieu liquide pour éliminer une partie des particules solides, le monoxyde de carbone gazeux est acheminé du laveur de gaz vers une soufflante, le débit du monoxyde de carbone gazeux est augmenté par la soufflante et le monoxyde de carbone gazeux est acheminé vers un filtre à particules et les particules solides restantes sont essentiellement filtrées dans le filtre à particules à partir du monoxyde de carbone gazeux. Avant d'être acheminé vers le filtre à particules, le monoxyde de carbone gazeux est acheminé vers un dispositif d'alimentation en particules (4), où des particules finement divisées d'adsorbant (A) sont introduites dans le monoxyde de carbone gazeux pour faire adhérer le composant goudron sur la surface des particules d'adsorbant et le flux de monoxyde de carbone gazeux contenant les particules d'adsorbant est acheminé vers le filtre à particules, auquel cas le composant goudron ayant adhéré sur les particules d'adsorbant est évacué dans le filtre à particules.

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