| 摘要 |
The system consists of a chute 2, which is closed off at the bottom by the hollow grate - Fig. 3 - flowed through by air and low- temperature carbonisation gas, with, at the bottom, part burn-off 3 into the horizontal combustion chamber 4 connected afterwards, which on the rear side of the boiler becomes the upwardly widening combustion chamber 5, to which the vertical waste gas flues 6, arranged between chute 2 and combustion chamber 5, are connected, which open into the smoke flue 7 which is located horizontally at the top on the water jacket and surrounded by the boiler jacket insulation. The fresh air supply of the burn-off 3 and low-temperature carbonisation gas return from the upper chute region take place through separate shaped chambers 9 and 10 which are arranged on the smoke flue 7 and heated by its radiant heat, via the connection channels 9 and 10 on the rear side of the boiler, to the mixing chamber 11 at the bottom. Then the air and low-temperature carbonisation gases, mixed, flow, heating further, through a number of profile tubes irradiated by the combustion heat, which, lying next to one another with intermediate spaces, support the fire of the burn-off zone 3, to the front side of the boiler and pass out of overflow slots in reversed direction onto the combustion material, the overflow slots being arranged at approximately the same height as the entry opening of the combustion chamber 4. With full-load operation, a diversion of the burn-off flame into the combustion chamber 4, with low-temperature carbonisation gas formation in the chute 2 prevented, is brought about. |
