Residual heat boiler of steel ball dedusting type ore heat furnace

Abstract

The invention relates to a residual heat boiler of a steel ball dedusting type ore heat furnace. The residual heat boiler at least comprises a boiler heated surface, a seal boiler flue gas passage, a furnace top and a furnace bottom ash hopper, wherein the boiler heated surface comprises coil pipe groups; and the seal boiler flue gas passage is formed at the periphery of the boiler heated surface. The residual heat boiler is characterized in that the furnace top is provided with a steel ball spreading device, a steel ball separating and collecting device is arranged under the furnace bottom ash hopper; a circulating type steel ball mechanical transporting device is arranged between the steel ball spreading device and the steel ball separating and collecting device; the circulating type steel ball mechanical transporting device comprises at least one drive wheel, at least three driven wheels, a double-row chain, a horizontal guide rail, a steel ball transporting hopper and a mechanicaldischarge blocking wheel; the at least one drive wheel and the at least three driven wheels are fixed on a boiler frame, and the steel ball transporting hopper is hung on the double-row chain surrounded between the drive wheels and the driven wheels; and the furnace top is provided with the mechanical discharge blocking wheel capable of turning over the steel ball transporting hopper. The invention has simple mechanism, recycled steel ball, mechanical automation running, low investment and running cost and favorable dedusting effect, and the like, can effectively remove and collect accumulated ash and sticking dust on the residual heat boiler heated surface of the ore heat furnace and greatly develops the energy-conservation and emission-reduction technology of the ore heat furnace smelting industry.

Description

technical field [0001] The invention relates to a steel ball dedusting type submerged arc furnace waste heat boiler which can remove ash deposits on the heating surface of the submerged arc furnace waste heat boiler in a reliable, continuous and effective manner and ensure the heat transfer efficiency of the heating surface. Boiler technology field. Background technique [0002] Submerged arc furnace, also known as "submerged arc electric furnace", mainly refers to the electric furnace used to produce metal silicon, ferrosilicon alloy, manganese silicon alloy, nickel titanium alloy, calcium carbide and other products. The flue gas of this kind of submerged arc furnace waste heat boiler contains The amount of dust is 5-20g / Nm3, and the flue gas temperature generally fluctuates around 300-900°C. Most of the dust in the flue gas has a diameter of 0.1-0.5um and is composed of spherical particles and pellets of these particles. The characteristics of dust It is small density, th...

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Problems solved by technology

[0013] The purpose of the present invention is to overcome the deficiencies in the prior art, and provide a steel ball that solves the problem of dust removal on the heating surface of the waste heat boiler of the submerged arc furnace by using the steel ball dust removal method, and can continuously, stably, effectively, economically and reliably remove the dust on the heating surface Dust removal submerged arc furnace waste heat boiler

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