A constant temperature heating system for mine waste heat recovery

Abstract

The invention provides a mine waste heat-recovery and constant-temperature-heating system which comprises a mine return air channel assembly, a water treater, a water storage pool, a dirt separator, afirst circulating pump set and a heat exchanging mechanism. A spray head of a spray-type heat exchanger sprays a cooling medium towards air discharged by the mine return air channel assembly, and heat of the air is taken away by the cooling medium. The low-heat air discharged from the mine return air channel assembly is discharged into the atmosphere, and the influence on the environment is reduced. After the heat is absorbed by the cooling medium, the cooling medium is subjected to treatment such as purification and filtration through the water treater, the water storage pool and the dirt separator, and then heat exchanging is conducted through the heat exchanging mechanism to achieve heat utilization. Through waste heat recovery and water source heat pump system recovery and by utilizing low-grade heat carried by ventilation air methane, the mine lot shaft anti-freezing demand is met, in a mine ventilation air methane waste heat resource utilization system, a large amount of heat energy contained in the mine ventilation air methane is transferred into water in a spray heat-exchanging mode through the mine ventilation air methane heat exchanger, and the circulating water serves as a low-temperature heat source of a heat pump system.

Description

technical field [0001] The invention relates to the field of mine waste heat recovery, in particular to a mine waste heat recovery constant temperature heating system. Background technique [0002] According to the requirements of "Coal Industry Mine Design Code" (GB50215-2005), when the temperature is below zero in winter, in order to prevent the water in the mine inlet shaft from freezing, affecting the lifting capacity and causing the bottom of the mine accident due to the collapse of ice cubes, it is necessary to Take appropriate measures to keep the shaft from freezing, ensure the safety requirements of the air supply temperature at the wellhead of the mine at 2°C (to ensure that the wellhead does not freeze), and meet the needs of use in extreme environments where the ambient temperature reaches -15°C. [0003] In the prior art, such as Patent No. CN201120524559.6, a mine return air waste heat recovery heat exchanger belongs to the field of mine waste heat recovery and...

AI Technical Summary

Problems solved by technology

In the mine return air waste heat recovery heat exchanger involved in this patent document, the circulating water adopts a closed cycle, and the water quality is not affected by the return air; and the dust content and water content in the return air are greatly reduced, effectively reducing the impact of the return air on the surrounding environment. Environmental impact, its circulating water has not been effectively promoted and utilized in the future

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