Waste heat circulation system for direct air cooling tower

Abstract

The invention discloses a waste heat circulation system for a direct air cooling tower. The waste heat circulation system is composed of a desalting water tank, a filter screen, a high-pressure pump, a regulating valve and an air cooling unit, wherein the desalting water tank, the filter screen, the high-pressure pump, the regulating valve and the air cooling unit are sequentially connected through pipelines. The air cooling unit is composed of a direct air cooling tower and a draught fan located on the lower portion of the interior of the air cooling unit, wherein the direct air cooling tower is formed by obliquely building fin pipes. Spray nozzles are further arranged above the draught fan. Air flows into the air cooling unit above through the spray nozzles. Multiple sets of air suction pipelines are arranged on the exterior of the direct air cooling tower in parallel and are fixed above the interval spaces of the adjacent fin pipes in the axial direction of the fin pipes correspondingly. Air suction openings are further formed in the lower portions of the air suction pipelines. Waste heat air between the fin pipes enters the air suction pipelines through the air suction openings. The output ends of the air suction pipelines are in butt joint with air feeder air feed pipelines of a boiler. Hot air at an outlet of a direct air cooling condenser is used for air used for boiler combustion, recycling of hot air at an outlet of the direct air cooling tower is achieved, the utilization rate of fuel is increased, thermal pollution is reduced, and the effects of energy conservation and emission reduction are achieved.

Description

technical field [0001] The invention belongs to the technical field of heat energy recovery equipment, is suitable for direct air-cooling generator sets, and in particular relates to a waste heat circulation system of a direct air-cooling tower. Background technique [0002] With the increasing scarcity of water resources in the world and the high attention to environmental protection issues, traditional thermal power water-cooled units are facing severe challenges due to the consumption of large amounts of water resources and certain negative impacts on the environment. In recent years, a large number of direct air-cooled generator sets have been put into operation in the northwestern region rich in coal and poor in water, which has alleviated the shortage of power generation caused by the lack of water resources in the local area, and has received good social benefits. The air-cooled unit adopts the air-condensing steam turbine to exhaust steam, which avoids the evaporatio...

AI Technical Summary

Problems solved by technology

However, the temperature of the directly air-cooled air source has been greatly increased after passing through the water-cooling system, and direct discharge into the atmosphere will cause certain heat pollution and waste a lot of heat sources. Therefore, it is meaningful to design a system to recover waste heat and use heat exchange. major

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