Waste heat boiler of shot-cleaning type glass kiln

Abstract

A waste heat boiler of a shot-cleaning type glass kiln mainly comprises a boiler heated surface, a boiler smoke passage and a boiler dust remover, wherein the boiler dust remover is a shot-cleaning device comprising at least one shot scattering mechanism which is installed above the heated surface of the waste heat boiler and capable of scattering shots on the heated surface of the waste heat boiler and has impact function, a shot collecting mechanism installed below the heated surface of the waste heat boiler and used for collecting the shots which fall off after impacting the heated surfaceof the waste heat boiler, and a shot transporting mechanism connected with the shot collecting mechanism and capable of continuously lifting the collected shots to the shot scattering mechanism; the shot scattering mechanism is installed above the heated surface of the waste heat boiler and comprises a scatter collecting hopper where the shots flow downwards and a scattering ball or cone positioned below the scatter collecting hopper; and the waste heat boiler has the following characteristics: the shots can be used circularly, the structure is simple, the investment and operation costs are low and the dust removal effect is good.

Description

technical field [0001] The invention relates to a glass kiln waste heat boiler with a steel ball dust removal mechanism, belonging to the technical field of boilers. Background technique [0002] In the prior art, the glass kiln production line (float glass) melts glass by burning liquid or gaseous fuel, and the flue gas produced by the combustion contains alkali metals and other components in the glass raw material after passing through the production line, and the sulfur content in the flue gas is relatively high , The dust is highly corrosive and adhesive. The characteristics of smoke and dust are small density, fine and light, good cementation performance, strong electrostatic adsorption and adsorption ability between particles, and not suitable for sedimentation. The ash contains SiO2, MgO, CaO, Fe2O3, Al2O3, P2O3, Na2O, TiO, K2O A kind of alkali metal particles, these particles show different adhesion characteristics under different flue gas temperature ranges, flue g...

AI Technical Summary

Problems solved by technology

Its disadvantages are: continuous dust removal is not possible, the dust removal effect varies greatly on different parts of the heating surface, there are many blind spots, and due to the large negative pressure of the boiler, a large amount of cold air will be brought in when the sound wave is input, which seriously affects the thermal efficiency of the boiler; The applied stress value caused by vibration of different parts of the heating surface is very different, and its anti-fatigue life is different.

Its disadvantages are: it cannot clean dust continuously, and the dust removal effect on different parts of the heating surface is very different, and there are many blind spots; a large amount of cold air or steam is input, which seriously affects the thermal efficiency of the boiler; high-speed wind or steam is close to the pipe wall. The above-mentioned ash species have the force of compaction; especially steam cannot be used, the introduction of water vapor will greatly increase the adhesion characteristics of this type of ash, and the damp ash will seriously affect the dust collection effect in low-temperature areas; a large amount of compressed air Or steam will consume a lot of energy, very uneconomical

[0012] Its working principle is: the principle of spraying water directly onto the heating surface of the boiler and washing it with water. This method has certain effects, but it has many disadvantages: serious water pollution, frequent shutdown of the boiler, serious damage to the boiler due to cold and heat, and corrosion of the boiler. Aggravating, in short, this is an unacceptable method

[0015] In this method, the system is complex, the investment and maintenance costs are large, and the cleaning effect is not ideal.

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