Boiler waste heat recovery system with vertical low-resistance cooling system

Abstract

The invention discloses a boiler waste heat recovery system with a vertical low-resistance cooling system. The boiler waste heat recovery system comprises a boiler, waste heat recovery equipment, a flue gas treatment device and a steam tank. The waste heat recovery equipment comprises a cyclone dust collector, a heat exchange assembly, a first heat exchange tube, a second heat exchange tube and a heat exchange water tank. A first circulating pump is arranged between the heat exchange assembly and the first heat exchange tube. The heat exchange assembly, the first heat exchange tube and the first circulating pump form a refrigerant circulation loop. A first induced draft fan is arranged between the cyclone dust collector and the second heat exchange tube. An air inlet pipe of the cyclone dust collector communicates with a boiler flue gas outlet, and an air outlet pipe of the cyclone dust collector communicates with an air inlet of the second heat exchange tube through the first induced draft fan. An air outlet of the second heat exchange tube is connected with the flue gas treatment device through a second induced draft fan. High-density multi-layer and multi-row wire-shaped bent heat exchange pieces are arranged on the surface of the middle of the second heat exchange tube. The boiler waste heat recovery system is better in heat exchange effect and higher in waste heat recovery rate.

Description

technical field [0001] The invention relates to the technical field of heat supply and environmental protection, in particular to a boiler waste heat recovery system with a vertical low-resistance cooling system. Background technique [0002] During the operation of industrial boilers, there are problems such as high exhaust gas temperature, insufficient combustion, and low boiler thermal efficiency. The total amount of energy in the exhaust heat loss is huge. Making full use of this part of energy to heat the air and water, increasing the air temperature and feed water temperature can improve the fuel utilization rate to a certain extent. The recovery efficiency of the existing waste heat recovery and utilization equipment still has the problem of low application efficiency, and the problem of difficult cleaning of dust accumulation. Contents of the invention [0003] In order to solve the above problems, the present invention provides a boiler waste heat recovery system...

AI Technical Summary

Problems solved by technology

The recovery efficiency of the existing waste heat recovery and utilization equipment still has the problem of low application efficiency, and there is a problem that the dust accumulation is difficult to clean up