Method and system for recycling heat obtained based on coal mine gas extraction equipment

Abstract

The invention discloses a method and a system for recycling heat obtained based on coal mine gas extraction equipment, and aims to utilize waste heat of the gas extraction equipment, improve the heat supply quality through a heat pump unit, ensure external constant-temperature heat supply and achieve the aim of scientific utilization. The heat recycling system collects waste heat of the extraction equipment through the recovery device, so that the temperature of circulating water in the water ring vacuum pump can be reduced, stable operation of the equipment is guaranteed, and the efficiency is improved; and finally, by means of cooperation of the shell-and-tube heat exchanger and the water source heat pump, quality is improved, and constant-temperature external heat supply is achieved. A main working unit is formed by the water ring vacuum pump, the water-water heat exchanger and the water source heat pump, a small amount of high-grade electric energy is consumed, heat in low-grade working liquid of gas drainage equipment is extracted, high-grade energy is generated, meanwhile, waste residues, waste liquid and waste gas are not newly added, and an energy-saving and clean heat supply mode is achieved; and the production cost of coal mine enterprises can be reduced, and the national policy requirements of energy conservation and emission reduction are met.

Description

technical field [0001] The invention relates to the technical field of equipment waste heat recycling, in particular to a method and a system for recycling heat based on coal mine gas extraction equipment. Background technique [0002] Recycling the waste heat generated by the extraction equipment of the gas drainage pumping station has a significant energy-saving effect and will also bring economic benefits; it is more in line with the energy-saving and emission-reduction policy. The recovery of waste heat from the extraction equipment of the gas drainage pumping station can achieve dual purposes. First, the waste heat can be supplied to the domestic heat required by the coal mine. The second is to save energy, which not only saves the same amount of heat as the boiler produces, but also reduces waste heat emissions, which is an environmentally friendly energy-saving method. The waste heat of the extraction equipment of the gas drainage pumping station is the waste heat of...

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Problems solved by technology

The waste heat of the gas drainage pump station is the waste heat of the cooling medium; in the past, the production and operation of coal mines were relatively rough, and the awareness of energy saving was not strong, so they did not pay attention to the utilization of waste heat from the extraction equipment. At the same time, engineers and coal mine managers always believed that the operation process There are production fluctuations in the waste heat, which leads to the instability of waste heat; coupled with the poor nature of the waste heat carrier medium (with coal dust), the waste heat utilization device requires high-cost equipment, so there is no breakthrough and perfect utilization system for the waste heat utilization of the extraction equipment, so A method and system for heat extraction and reuse based on coal mine gas extraction equipment are proposed

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