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Summary
One of the possibilities of the energetics utilization of waste gases
(converter gas, coke gas, bio gas) is to use them mixed with natural gas. It
is necessary to know the change of firing
parameters, the air pollution and the optimal mixing rate. On the basis of the staged
combustion technological and environment protectional tests of the utilization of waste gases,
as mixed gas we can come to the conclusion that a waste gas - natural gas mixture of a max.
20-50% waste gas content (20% bio gas ) can be recommended (
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reduction: 
30%) for
the purpose of the utilization of the chemical heat of the gas mixture. The air factor of primary
combustion chamber plays a significant role in this firing technology. The realization of our
research aims has been supported by the National Research Foundation (OTKA T 022019
and 029199) and Environmental Ministry (1/0322/98).