Rotary Network: lime kiln lime energy saving measures to reduce fuel recycling kraft pulping is a major energy consumer in each step one. Lime recovery equipment

is commonly used rotary kiln, and its purpose is dried and calcined lime mud, the use of heavy oil or natural gas fuel. Domestic operations lime kiln lime per 1t

recycling, consumption of heavy oil 250 ~ 300kg, while the international heavy oil consuming only 125kg. You can take the following measures to reduce fuel

consumption and improve energy efficiency. 1, to improve Nai cake dryness measures to reduce fuel consumption through the heat balance calculations of total heat

consumption Nai evaporation heat consumption more than 40%, so reducing the cake moisture into the kiln is the key to energy saving. In addition to this focus on

improving process control Nai on the water treatment performance, eliminating the accumulation of silicon in Nai silicon brought outside interference, but the main

thing is to wash the residue with advanced equipment. At present, foreign general use pre-hung layer filter, into the kiln lime mud filter cake dryness by 60% to 70%

to 75%, as well as other forms of filter, filter cake dryness Nai even up to 80%. 2, the cooler new kiln lime kiln discharged through a pipe cooler. Lime kiln chamber is

controlled by the induced draft fan through the cooler into the kiln. As the combustion air by direct contact with the hot lime preheated combustion air, and therefore

significantly reduces the fuel consumption of lime. Accounting for 95% of the combustion air as combustion air through the cooler, the energy savings to the

maximum extent. Combustion air is preheated to a 20 ℃ 260 ℃, the energy savings 570MJ / t, lime, lime sensible heat losses to the 760MJ / t lime, lime supplying

heat so that heat is used to preheat combustion air 75%, 25% as the radiation loss. Lime products discharged from the cooler temperature below 150 ℃. 3, the use

of thermal insulation material with good performance with new insulation lime brick, tile casting molding. Kiln burning zone (representing 30% of the length of the

kiln) of the alumina refractory lining length 229mm, 30mm, its rear end is lined with insulating lining layer. The intermediate region (representing 40% of the length of

the kiln) Length 153mm lining of refractory bricks containing 40% alumina, the rear end of the insulating layer is lined with 63mm. The rest of the kiln is lined with

144mm high strength casting molding bricks. Use the form insulating layer reduces the lime kiln shell temperature, compared with the old lime kiln, direct energy

savings of 960MJ / t lime. The thermal conductivity of insulating lining bricks only 15% of alumina. Therefore, new lime kiln to heat insulation capacity and intermediate

zones were old lime kiln for the corresponding area 3.3 times and 4 times. Please indicate Henan YuFeng Heavy Machinery