Rotary kiln equipment is always applied to calcining limestone materials. After choosing efficient rotary kiln equipment, many customers still worry about the great energy consumption of rotary kiln. Among majority of rotary kiln, fuels will be directly injected into kiln tail. Fuels will mix with air. After adjusting the flame of burner to a certain position, continuous ignition process will be finished. The temperature of flame is closely relevant to type fuel, ratio between fuel and air and other combustion conditions.
In order to good flame shape and most effective combustion, the proportion between fuel and combustion air should be taken into consideration. Many other elements should be considered into the design of burner, such as speed and demand of air. Each kind of fuel should be considered carefully before being used. Each burner can be applied to special purpose aimed at special fuel. Not a burner can be suitable for all situation. During the design of burner, other outcome such as NOx, Sox and other emissions should be taken into consideration.
When choosing fuel type, preparation, and combustion efficiency, these parameters should be figured out, such as coal and coal ramification. Therefore, preheating consumption, grinding consumption and energy consumption of fuel transfer pump. The influence to limes quality of fuel will directly affect the quality of final products and market share.
In contrast, natural gas doesn’t need auxiliary equipment. Therefore, combustion consumption can be taken as all consumption. It doesn’t mean that natural gas is a kind of cheap fuel. But it only needs very small amount of energy for preparing materials and combustion. In addition, fuel consumption may be affected by the combustion efficiency. The low heat liberation rate of natural gas reduces the efficiency of coke and coal. Under the call-upon of energy-saving policy, many enterprises start to find new ways to provide energy for
industrial kiln furnace. For example, some enterprises in minority areas begin to turn garbage into useful energy for rotary kiln. then, the energy consumption of rotary kiln will be solved.
