Layer combustion compound ventilation chain discontinuous running type coal boiler

Abstract

The invention relates to a layer combustion compound ventilation chain discontinuous running type coal boiler comprising an arc water jacket, an elliptic water jacket, both sides, a convection tube bundle of a back header tank and the like, wherein the water jackets are communicated with the convection tube bundle of the header tank by an communicating tube to form a two-return water path, the elliptic water jacket is stacked with an upper communicating wall tube and a lower communicating wall tube at both sides of the arc water jacket and a fireproof material to form a three-return flue of a fume wall, and an ejector tube and the communicating tube are respectively communicated with the water jackets and the header tank to form a safe water circulation system of the boiler. The invention has scientific and reasonable structure, advanced technique, safe and reliable water circulation, sufficient combustion, high heat efficiency, adequate output, electricity saving, noise lowering, occupation area reduction and very obvious energy saving, consumption reduction and discharge reduction and does not use a suction ventilator and a dust remover, and the environment-friendly effect of a dry desulfurizing method reaches the region environment-friendly standard of one class.

Description

technical field [0001] The invention relates to a hot water heating boiler which uses agglomerated briquette coal as fuel, only a blower is installed in the flue air system of the boiler, and the ventilation mode adopts positive pressure ventilation and natural ventilation at intervals. Background technique [0002] The country clearly stipulates in the Air Pollution Law that "measures should be taken to promote low-pollution combustion technologies, gradually limit the loose burning of raw coal, and actively develop industrial briquettes." [0003] At present, the relatively mature agglomerated industrial briquettes on the market are mostly used in metallurgy, gas production or fertilizer production. The actual operation proves that it can reduce 50% of smoke and dust emissions and save coal by 15%-27% compared with burning raw coal. Adding sulfur-fixing agent, the sulfur-fixing agent can reach 40-60%. The popular spherical coal boilers in the market in recent years have m...

AI Technical Summary

Problems solved by technology

The boiler ventilation method disclosed in the invention patent with application number 2L93104842.7 is a natural ventilation hand-fired boiler, and the boiler ventilation method separated in the utility model patent with application number 2L94218366.5 is a pressure-stop ventilation chain boiler. Although the ventilation mode of the boiler is much better than that of the water-fire tube and water tube boilers, there are still major defects in the structure, which seriously affects the safe and stable operation and thermal efficiency, and it is easy to cause plate cracking and local water circulation. Water leakage due to the cover, poor heating surface layout reduces thermal efficiency

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