| 摘要 |
Perfected method for the gasification of fuel (15), such as solid urban and/or industrial waste, wood scraps and chippings, bio-masses in general, carbons, peat, lignite etc., the method using a gasifier associated with a user device (54) of the combustible gas (45) produced, the method including the thermal recovery of at least part of the heat possessed by the combustible gas (45) produced and/or at least part of the heat possessed by the exhaust gases produced by the user device (54) and/or at least part of the heat generated by the user device (54) itself and including in the lower part of the gasifier (10) nickel catalyser means to produce methane gas and in the upper part of the gasifier (10) including an exchange, both in a vertical and horizontal direction, of the cold fluids and/or the distillates of the volatile parts inside the fuel (15) loaded from above and the hot fluids in the lower part of the gasifier (10) in such a way as to obtain a dry distillation without the combustion of the volatile parts of the solid fuel (15). Gasifier to achieve the above method, including a containing structure (11) equipped with loading means (12) for the solid fuel (15) in a loading zone (23) above at least one dry distillation zone (24) and at least one zone (36) with a reducing action cooperating with one zone with an oxidising action (35), the gasifier including at its lower part at least means to expel the ashes, the gasifier including inside the containing structure (11) at least a pair of inner walls (28,39) to retain the combustible material (15), the walls (28,39) cooperating respectively with a pair of outer walls to retain the combustible material (15), respectively an upper outer wall (25) and a lower outer wall (38), the walls (25,28,38,39) including through holes (26,126) for the passage and/or horizontal interchange of the cold gaseous fluids of the solid fuel (15) and the hot gaseous fluids circulating in the coordinated interspaces (27,34). <IMAGE> |
