GAS COOLER FOR COOLING GAS CONTAINING DUST

摘要

PURPOSE: To obtain a cooler suitable for coal-gasification plant by avoiding the deposition of solids contained in a gas sufficiently and prolonging the operating time of the cooler before cleaning a nest of hot-gas tubes significantly as compared with a prior art cooler. CONSTITUTION: A cooler for particle-laden gases in a coal-gasification plant, with an upright nest of hot-gas tubes that coil around the cooler's longitudinal axis inside its jacket and with a pipe for supplying a coolant inside the nest of tubes. The cooler has an upper central gas intake 2, several diffuser-like lower gas outlets 3 at the bottom that open into the nest 4 of tubes. A guide pipe 6 has an intake for descending coolant and rests on a support 9 on the base 11 of the cooler or on supports 10 against the inner surface of the cooler. The mixture of steam and water ascending among the tubes is extracted through an outlet 14.