Uncooled protective slag discharge tube

A reactor is proposed for entrained flow gasification for operation with pulverized or liquid fuels, with liquid fuels being understood as oils containing solids as well as suspensions of water or oil with combustible materials crushed into fine dust or anorganic additives, at pressures between ambient pressure and 8 MPa, gasification temperatures between 1,200 and 1,900° C., as well as with a gasification means containing free oxygen, which features a reaction chamber, a gasification burner which is arranged in the upper area of the reaction chamber, a quench chamber, which is connected via a crude gas and slag discharge outlet to the reaction chamber, a draft tube protecting the slag discharge outlet. The draft tube of this reactor is inventively formed from Molybdenum, an alloy featuring molybdenum, Tantalum or an alloy featuring Tantalum. The choice of these materials enables a previously complicated installation to be greatly simplified by omitting the cooling previously required.