B - Operations – Transporting – 09 – B
Patent
B - Operations, Transporting
09
B
49/53, 49/77.5
B09B 3/00 (2006.01) B03B 9/04 (2006.01) C03B 5/00 (2006.01) C03B 5/235 (2006.01) F23G 5/00 (2006.01)
Patent
CA 1321071
ABSTRACT The slag that is produced in a garbage incinerator (1) is passed directly from the slag outlet (6) of the furnace directly to a separator (7) for the removal of coarse material and iron. There is no quenching in water. After the coarse cleaning stage, the slag is reheated in a pre-heating system (8) using hot smoke gases from the garbage incinerator (1) and then, during the addition of additional heat, is melted in a smelting furnace (10). The fly ash is mixed into the flow of slag ahead of the pre-heating system (8). The harmful substances that are vapourized during the pre-heating and smelting processes are condensed out from the waste gases and reused. A pyrolysis furnace (9) is arranged parallel to the pre-heating system (8) and this is also heated with a partial flow of hot smoke gases from the smoke gas channel (3). The pyrolysis gas serves as a fuel to generate the additional heat in the smelting furnace (10). All the non-vapourizing and residual harmful substances form harmless compounds in the molten slag or are bound into the resulting molten substance so as to be insoluble in water. Figure 1.
614301
Alstom
Smart & Biggar
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