Method and plant for conversion of waste material to stable final products

A method of converting waste material at least partially comprising thermally disintegratable chemical substances to stable final products such as CO.sub.2, H.sub.2 O and HCl, comprising the steps of:

• (a) bringing such waste material as may be present in solid form into feedable form by dissolving, suspending or crushing such material;
• (b) at least partially disintegrating the waste material in a plasma gas of high temperature generated in a plasma generator by introducing the plasma gas, with at least one of the waste materials and the disintegration products thereof, into a prereaction chamber between the plasma generator and a reaction chamber, and subjecting said plasma gas and said at least one of said waste material and disintegration products to intense turbulence therein;
• (c) thereafter feeding the at least partially disintegrated waste material in feedable form together with an oxygen-containing gas into a reaction zone heated to at least 2000.degree. C., said reaction zone consisting of a cavity in a gas-permeable carbonaceous filling material in piece form arranged in a reaction chamber, said cavity being formed by directing the plasma jet from the plasma generator towards and projecting into said filling material in the reaction chamber;
• (d) in said reaction zone maintaining the oxygen potential such that substantially completely all the at least partially converted waste material is converted into stable final products;
• (e) removing the stable final products from the reaction zone by permitting gaseous products to flow upwardly through the gas-permeable filling material and molten or soild products to fall into the bottom of the reaction chamber;
• and
• (f) binding substantially all of such chlorine and hydrogen chloride as may be contained in said gaseous products by rapid cooling and washing.