Direct heat-supply system adopting mine water waste heat

Abstract

The invention discloses a direct heat-supply system adopting mine water waste heat. According to the system, mine water is directly adopted for supplying heat to a mine wellhead in winter, it is guaranteed that the air mixing temperature of the mine wellhead is not lower than 2 DEG C, and freezing of side spraying water in an air inlet shaft of a mine is prevented. The system comprises devices ofsubmersible sewage pumps, a quartz sand filter, plate-type heat exchangers, circulating water pumps, a softened water device and a low-temperature-type wellhead heating unit. Compared with the heat-supply modes of traditional coal-fired boilers of coal producing enterprises, according to the system, only a small amount of electric energy is consumed, the automation degree is high, and the operation cost is extremely low; emission of waste gas, waste water and solid waste is completely avoided, and cleanliness and reliability are achieved; and on the premise of effectively guaranteeing safety production of a mine lot, the mine water waste heat resource is fully utilized, and the mine lot is assisted to achieve environment-friendly production.

Description

technical field [0001] The invention relates to a wellhead antifreeze heat supply required for safe production in a mining area, in particular to a mine water waste heat direct heat supply system. Background technique [0002] According to the requirements of the mine design specification, when the air temperature is lower than 0°C, in order to prevent the water in the mine inlet shaft from freezing, affecting the lifting capacity, and causing accidents at the bottom of the shaft due to the collapse of ice cubes, appropriate measures must be taken to prevent the inside of the shaft from freezing. freeze. The specification further stipulates that air intake shafts in areas where the calculated outdoor heating temperature is equal to or lower than -4°C should be equipped with air heating equipment, and the mixed temperature of hot air and cold air should be designed at 2°C. The wellhead is used as the entrance of underground ventilation, and the ventilation volume is relative...

AI Technical Summary

Problems solved by technology

However, this heating method has poor ability to adjust the heating load with the change of ambient temperature, and the heating method is rough. Most of the time, the coal-fired heating system operates under low-efficiency conditions, with high energy consumption and high fuel consumption. The waste of coal is serious

Moreover, during the operation of coal-fired boilers, a large amount of waste water, waste gas and solid waste are generated, polluting the surrounding environment

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