2012年8月27日星期一
Energy Saving Combustion Equipment of Lime Kiln
The range of burning fuel for burning the lime is very wide, such as the solid fuel, gas fuel, liquid fuel. However, the combustion principle of new technology lime kiln is the kind of fuel that is more economical. The kind of fuel is more environmentally friendly and more energy saving is the key of the technology lime kiln. Now commonly used is the coke and gas. In terms of the new technology, the moste ideal is the gas, including blast furnace gas, converter gas, coke oven gas, calcium carbide exhaust (gas) furnace gas, etc. which is the best fuel for lime kilns. These gaseous fuels belong to the utilization of waste which has recycling economy nature. Particularly like coke oven gas emission, the resources are very rich. If the blast furnace gas and the calcium carbide exhaust can be made full use, the environment can be protected and more importantly, companies can receive good economic benefits. If these gas burning lime kilns can vigorously develop, the soil kilns pollution to the environment can be naturally solved. The development time gas burned lime kiln technology in our country is still relatively short and any transaction has a developing understanding process. Especially coke oven gas, due to the high calorific value with short flame, the usage of the lime kiln is easy to be overfiring. The amount of the fuel for burning lime is associated with the heat value of the fuel and its furnace. The amount of heat required of the calcined lime is derived by the combustion of the fuel, the main component of the fuel. The formula of the combustion process of carbon is C+O2 = CO2. The gas fuel is calculated according to its heat value. According to the actual experience, producing one kilogram of lime takes about 960kcal calories. But there are differences between the various factory production equipment and process conditions. In general, burning one ton gray consumes 1600m3 blast furnace gas and needs charred 300m3 oven gas.
The main ancillary equipment of the lime kine includes the feeding mechanism, distributing device, air supply device, incendiary devices and ash unloading device. Mixed burning lime kiln is critical. When the fuel and the lime are filled with the kiln, a reasonable distribution of charge in the kiln through distributing material must be achieved to eliminate the effect of the furnace wall and balance the furnace resistance. Therefore the form and the using effect of distributing device have a great impact on the productivity of lime kiln. Now there are a wide variety of distributing device, including rotary distributor, conch-shaped distributing device, fixed distributing device with high temperature and resistance to wear and they are easy to repair. They are particularly suitable for small and medium lime kiln configuration. The main attachment device of the gas kiln is a burner. Henan Hongxing Mining Machinery Co., Ltd. Is specialized in the production of environmentally friendly rotary kiln and environmental shaft kiln.
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