A mine dual heat source comprehensive heat recovery device and device structure optimization method

Abstract

The invention discloses a mine double heat source comprehensive heat recovery device and a device structure optimization method. The device includes an air inlet unit, a heat exchange unit and an air outlet unit; the air inlet unit includes a return air shaft, and the upper end of the return air shaft is connected with a butterfly The windshield, the side of the return air shaft is connected with a metal filter screen, the rear end of the metal filter screen is provided with a fan, the rear end of the fan is provided with a packing layer, and the rear end of the packing layer is provided with a return air diffuser tube; the air outlet unit includes a return air shrink The heat exchange unit includes a heat exchange box, and the inner area of ​​the heat exchange box is divided into a first mine water heat exchange cavity, a return air heat exchange cavity and a second mine water heat exchange cavity. The device of the present invention is simple in structure, reasonable in design, convenient in implementation and low in cost, convenient in use and operation, long in service life, can be well used for mine return air and waste heat recovery of mine water, has good use effect, and is easy to popularize and use.

Description

technical field [0001] The invention belongs to the technical field of mine waste heat recovery, and in particular relates to a mine dual heat source comprehensive heat recovery device and a device structure optimization method. Background technique [0002] my country is rich in coal resources and occupies a dominant position in energy production and consumption. With more and more coal mining, there are huge waste heat resources in the process of mine development, but they have not been effectively utilized. [0003] Mine return air is a high-quality waste heat resource with constant temperature and large air volume. The temperature is generally 14°C to 30°C, and the return air volume is generally 50m3 / s to 500m3 / s. About 3 billion m3 of mine water is discharged across the country every year, accounting for 40% of the annual water consumption in cities in my country. The temperature is generally 18°C ​​to 20°C. It can be seen that mine water is rich in low-temperature hea...

AI Technical Summary

Problems solved by technology

[0004] At present, the waste heat recovery of return air in underground mines is mainly based on spray heat exchange technology. This technical solution consumes a lot of water, resulting in waste of water resources. At the same time, due to the influence of particulate matter in the return air, it will cause corrosion to the pipeline during spraying and accumulation of return water pools. sludge

The utilization of mine water waste heat is mainly through water treatment technology. The technical scheme is cumbersome and complicated, and new technologies need to be continuously introduced

In view of the current underground utilization of mine return air and mine water waste heat resources, in the prior art, there is still a lack of a device that utilizes mine return air and mine water heat at the same time to achieve efficient heat exchange between the three media

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