GB382690A - Improvements in the electric arc treatment of vapourised carbonaceous materials - Google Patents

Abstract

<PICT:0382690/IV/1> In the treatment of gaseous or vaporized carbonaceous materials, or gaseous suspensions of liquid or solid carbonaceous materials in the electric arc in order to obtain acetylene or other unsaturated hydrocarbons, inert finely-divided solid substances, such as sand or ashes, are suspended in the said materials and the resulting suspension is passed through the arc. The solid substances come into contact with the surfaces confining the arc space and prevent deposits forming thereon. The introduction of the finely-divided inert solids may be continuous or intermittent and they may be mixed with the whole or a part of the gas to be treated, with inert gases or with active gases such as oxygen or steam. The speed of flow of the gases may be increased during the introduction to increase the abrading action of the particles. The solid particles may also be introduced into the reaction chamber by means of a worm conveyer. The solid particles may be removed from the reaction products in known manner. As shown, carbonaceous gas enters through a pipe 1 and the electric arc passes between an electrode 5 and an externally water-cooled electrode 4. Additional gas carrying sand is introduced through a pipe 2 and enters the arc furnace through a slot 8.ALSO:<PICT:0382690/III/1> In the treatment of gaseous or vaporized carbonaceous materials, or gaseous suspensions of liquid or solid carbonaceous materials in the electric arc, inert finely divided solid substances, such as sand or ashes, are suspended in the said materials and the resulting suspension is passed through the arc. The solid substances come into contact with the surfaces confining the arc space and prevent deposits forming thereon. The process may be employed in the preparation of hydrocyanic acid, unsaturated hydrocarbons such as acetylene, or carbon black. The introduction of the finely divided inert solids may be continuous or intermittent and they may be mixed with the whole or a part of the gas to be treated, with inert gases or with active gases such as oxygen or steam. The speed of the flow of gases may be increased during the introduction to increase the abrading action of the particles. The solid particles may also be introduced into the reaction chamber by means of a worm conveyer. The solid particles may be removed from the reaction products in known manner. Carbonaceous gas enters through a pipe 1 and the electric arc passes between an electrode 5 and an externally water-cooled electrode 4. Additional gas carrying sand is introduced through a pipe 2 and enters the arc furnace through a slot 8.