| 摘要 |
1. An installation for gasifying coal in a pair of chambers in communication with each other at their upper parts to allow gas to pass from one chamber into the other and comprising a device for supplying coal from above, at least one source of reactive gases, an exhaust pipe for the gases of reaction, as well as means for injecting the reactive gases and evacuating the gases of reaction in turns in each of the chambers, characterized in that it comprises an even number of heater-recuperators (16, 16') arranged symmetrically either side of the set of two chambers (1, 1'), each heater-recuperator (16, 16') being connected on the one hand to means (15, 15') of injecting the reactive gases and to means (20, 20') of evacuating the gases of reaction from a gas generator by a common pipe system (21, 21'; 23, 23') and on the other hand to the source of the reagents by the pipes (34, 34', 40, 40', 42, 42') in which there are mounted inversion valves (36, 36', 41, 41', 43, 43'), as well as to the reaction gas exhaust pipe (37, 37') also equipped with inversion valves (39, 39'), so as to allow the reactive gases and the gases of reaction to circulate at a pressure of between 200 and 3 000 kPa (2 and 30 bar) alternately in one direction and then in the other in the heater-recuperators (16, 16') in the course of successive cycles of predetermined duration. |
