Combination deashing wear-resisting device of boiler

Abstract

The invention relates to a combination deashing wear-resisting device of a boiler, which is used for flue gas waste heat utilization boilers of the cement, the submerged arc furnace, the waste incineration, the biomass incineration and the like. The combination deashing wear-resisting device comprises wear-resisting cover boards, connecting boards, a vibration deashing device and a shock-wave deashing device. The wear-resisting cover boards are arranged on the windward sides of horizontal heat exchange tubes of the heating surface of the boiler. Each wear-resisting cover board comprises two boards tangential to the corresponding heat exchange tube. The two boards are symmetrically distributed with a symmetric line of the vertical line passing through the heat exchange tube. The section ofthe wear-resisting cover board takes a shape of an acute-angled triangle, a reverse Y, a bell or a similar bell. Each wear-resisting cover board corresponds to the heat exchange tube. The wear-resisting cover boards are welded by the connecting boards. The connecting boards take a shape of net and extend outside the boiler. The combination deashing wear-resisting device of the boiler can effectively reduce ash deposition and slag formation on the heating surface of the boiler, reduce the wear of the heating surface, prolong the service life of the heat exchange tubes of the heating surface, greatly prolong the operation period of the boiler and effectively reduce the operation cost of the boiler.

Description

technical field [0001] The invention relates to a composite dust removal and anti-wear device for boilers, in particular to a composite dust removal and anti-wear device for waste heat boilers, and belongs to the field of energy utilization equipment and method improvement. Background technique [0002] Cement waste heat, submerged arc furnace waste heat, waste incineration, and biomass incineration are prone to produce high-concentration and high-cohesion fly ash, molecular attraction between fly ash and heat exchange tube wall, mechanical netting force, and thermophoretic force and electrostatic attraction make it adhere to the tube wall of the heating surface, easily forming ash deposits and slagging. The resistance of 1mm ash deposits to heat transfer is about 50 times that of steel materials, which greatly reduces the heat transfer efficiency. The wear and tear of the heating tube is also relatively serious, shortening its service life, thereby increasing the operating ...

AI Technical Summary

Problems solved by technology

But at present, the research on boiler anti-wear is not deep enough, and the problem of anti-wear of boiler water wall tubes still needs further research.

Images