Mine Waste Heat Resources Utilization Technology

Spot field investigation has been carried out in Sihe Coal Mine of Shanxi Jincheng Anthracite Coal group. The article analyzed the characteristics of the heat resource, calculated the quantity of each waste heat, and the comprehensive waste heat recovery system is given for Sihe Coal Mine. Studies have shown that the waste heat utilization rate is from 40% to 50% by using three-stage spray chamber for removing the dust and absorbing the heat of mine ventilation; using R134a for refrigerant, the mixed water of the mine drainage, the sanitary wastewater and spray water after heat transfer for the low temperature heat source of water source heat pump, the COP of the waste heat recovery system is up to 4.07; the mine ventilation through the spray chamber can be used as low temperature heat source of the air source heat pump; using the heating that the mine waste heat resources can replace 3 sets of 10 t/h coal fired hot water boilers, it can reduce the pollutant emissions from coal significantly.