Waste heat recovery and utilization system for coal mine air compressor

Abstract

The invention relates to a waste heat recovery and utilization system for a coal mine air compressor. The system comprises a heat pipe heat exchanger arranged at the top of the air discharge duct of the air compressor; a heat exchange circulation pipeline is formed between the heat pipe heat exchanger and the casing of a shell-and-tube evaporator through a heat exchange circulating water outlet pipeline and a heat exchange circulating water return pipeline; a refrigerant circulation pipeline is formed between the evaporation heat exchange pipeline of the shell-and-tube evaporator and the casing of a shell-and-tube condenser through a compressor and an expansion valve; a domestic hot water primary circulation pipeline is formed between the condensation heat exchange pipeline of the shell-and-tube condenser and the hot water pipeline of a plate heat exchanger; a domestic hot water secondary circulation pipeline is formed between the cold water pipeline of the plate heat exchanger and a domestic hot water tank; a winter user heating circulation water supply pipeline is formed between user equipment and the condensation heat exchange pipeline of the shell-and-tube condenser; and a summer user refrigerating circulation water supply pipeline is formed between the user equipment and the casing of the shell-and-tube evaporator. By adopting the invention, winter heating, summer refrigerating, and domestic hot water providing all year round for coal mine buildings are realized.

Description

technical field [0001] The invention relates to a waste heat recovery and utilization system, in particular to a system for recovery and utilization of waste heat in the exhaust air of a coal mine air compressor. Background technique [0002] At present, the heat energy for building heating, well shaft antifreeze and bathing hot water in employee bathrooms in most domestic coal mine industrial sites is provided by coal-fired boilers. This heating method not only consumes a large amount of non-renewable energy, but also emits a large amount of greenhouse gases and other pollutants that are not conducive to environmental protection. In response to my country's call for improving energy structure, improving energy utilization rate and strengthening environmental protection, how to efficiently recycle waste heat generated in traditional heating methods has become an important issue. Air compressor is an important large-scale fixed equipment in coal mine production and life, whi...

AI Technical Summary

Problems solved by technology

Under normal circumstances, the exhaust air volume of the exhaust heat of the air compressor is sufficient, and its temperature and humidity are basically kept constant throughout the year. There is a large amount of low-temperature heat energy contained in the exhaust air, but at present, because the exhaust air is directly discharged into the atmosphere, this part of heat energy Not being recycled, resulting in a waste of energy

Images