|
Abstract
Various hazardous wastes are mixed and burned in the calciner as alternative fuels in order to achieve the harmless
utilization and promote the development of the cooperative disposal of hazardous wastes in cement kilns. In this paper, the
effect of hazardous waste fuel on the operation parameters of the cement kiln system is systematically studied, the impact
of hazardous waste fuel on the standard coal consumption and CO2 emission of clinker are analyzed, and the law of the
influence of hazardous waste fuel on clinker performance is explained. The research indicates that the hazardous waste
with a calorific value can be used as an alternative fuel to burn in the calciner, which can lower the amount of standard coal
used to produce clinker and decrease CO2 emissions. When the calorific value of alternative fuel is controlled in the range
of 7 500~8 500 (kJ/kg), the optimal feeding amount ranges from 1.6 m3
/h to 2.7 m3
/h, the maximum coal saving reaches
1.59 kg/t.cl, and the maximum CO2 emission reduction is 4.39 kg/t.cl. Increasing the unit calorific value of hazardous waste
alternative fuel and reducing its water content can save more clinker coal consumption and further reduce CO2 emission. The
process parameters of kiln system and clinker quality are unaffected by the combustion of alternative fuel when used in a
reasonable amount.
|
2023, Vol. 0 
