C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
49/53, 49/77.5
C04B 5/00 (2006.01) C03B 5/14 (2006.01)
Patent
CA 2023955
Process and apparatus for the combustion and afterburning of residues ABSTRACT Summary This invention relates to an innovative process and apparatus for the joint combustion of special wastes and for the melting (vitrification) of fine dusts. This is achieved by separating the burning of slag and the burning of waste gases from one another in terms of the process, in that the temperature of the rotary tubular kiln is controlled by means of a combustion air control system as a function of the slag melt, if necessary with substoichiometric combustion, and the burning of the waste gas takes place with the addition of activated combustion air or oxygen in high turbulence zones of downstream aggregates. Vitrification agents can be added to the rotary tubular kiln. The fine dusts are integrated with substances; which can be used as energy sources and at the discharge of the rotary tubular kiln are added directly into the slag melt, so that there is a sudden melting and integration into the furnace slag guaranteed by the mixing induced by the rotation of the kiln. It is also essential that on account of the substoichiometric operation, the requirement for fluid wastes and/or supplemental fuel is drastically reduced, the capacity of the rotary tubular kiln is increased and NOx formation is reduced. 19
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
K+k Ofenbau G.m.b.h.
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