| 摘要 |
In a process for the low-temperature carbonisation of partially moist biomass according to Patent (Patent Application: P 3,402,215.5), according to which the moist fraction from domestic refuse is dried together with sewage sludge, after comminution and homogenisation by means of aerobic rotting, air and solar heat and then carbonised at a uniform temperature, the remaining carbonisation gas after condensation of the liquid carbonisation products is burned for heating the carbonisation reactor in an extended design, so that moist biomass wastes can, alone or mixed with sewage sludge, be dried in a bio-drying unit with aerobic rotting, air and solar heat to a residual moisture content of about 20% and then carbonised, alone or together with dry wastes, in an indirectly heated reactor in an inert atmosphere. The carbonisation coke can, immediately after it has left the reactor, be burned in a fluidised bed for heating the reactor. Advantageous equipment for carrying out the process with respect to the bio-drying uses a pusher grate, known in the pulp industry for example, for bulk silos for storing chippings, which grate pushes a layered heap of preferably comminuted, moist biomass wastes slowly over a bottom grate provided with aeration slots covered in the direction of conveying. Above this layered heap, a roof is provided which allows in sunlight as in a greenhouse. <IMAGE>
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