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Flue gas emissions of cement rotary kiln

The method of cement rotary kiln fumes have assisted chimney and the natural ventilation, conducive to  control the firing zone temperature and the flame profile when open kiln ignition, prevent the incomplete combustion of pulverized coal and higher levels of carbon monoxide gas into the electrical dust collector, appear secondary combustion phenomenon and caused an explosion of the electric dust collector. Its main shortcoming is big raise dust when kiln ignition. The technological characteristics of cement rotary kiln is the preheating of the material and decomposition process of part of calcium carbonate in shaft preheater. To facilitate the fire work operation control, preheater, vertical tube preheater outlet, cyclone tube outlet and exhaust fan inlet, where must be installed thermometer. cyclone tube outlet and exhaust fan inlet where should install negative pressure meter. Shaft preheater outlet pipline shall be installed on the carbon monoxide detector, Which indicates conditions pulverized coal combustion situation and to prevent the high content of carbon monoxide gas into the electrical dust collector.

The advantages of exhaust fan flue gas emissions of cement rotary kiln is to reduce the kiln ignition of dust, but the way that discharge flue gas, exhaust fan and electric dust collector should be paid attention to overtemperature, at the same time should pay special attention to prevent the complete combustion of pulverized coal and higher levels of carbon monoxide emissions into the electric dust collector. Above two kinds of flue gas emission method is feasible, as for using which approach is suitable, decision should according to the plant equipment situation.
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