Coal-burning oil-burning gas-burning boiler

Abstract

A disclosed coal-burning oil-burning gas-burning boiler comprises a furnace body, the furnace body is inside provided with a heat exchange zone at the upper part and is inside provided with a combustion zone at the lower part; the heat exchange zone is provided with multiple horizontally arranged transverse heat-exchange fire tubes, the central part of the heat exchange zone is provided with a separation plate dividing the multiple transverse heat-exchange fire tubes into an upper layer and a lower layer; a front-end return chamber and a rear-end return chamber are respectively arranged between the furnace body and the end faces of two ends of the transverse heat-exchange fire tubes; the combustion zone is provided with a coal burning zone and an oil and gas burning zone which are distributed in a parallel manner; the outer top of the furnace body is provided with an expanding pressure-release water tank; the upper part of the lateral side of the furnace body is provided with a smoke discharging port; and the outer end of the smoke discharging port is provided with an induced draught fan. Coal and gas in the boiler are combusted in different chambers, layer combustion and chamber combustion are perfectly combined, coal, oil and gas can be combusted singly, and can be merged for simultaneous combustion, and the multi-functionalization of the boiler is realized.

Description

technical field [0001] The invention relates to a boiler, more specifically to a coal, fuel oil and gas boiler. Background technique [0002] Under the premise of increasing environmental protection requirements and the development trend of large-scale central heating in cities, the boilers currently used, whether they are water-burning boilers or heating boilers, and urban central heating boilers, are basically coal-fired. Boilers, and in large and medium cities with high environmental protection requirements, coal-fired boilers are not allowed to be used, and they are all replaced by gas-fired boilers or oil-fired boilers. The above-mentioned boilers are all single-function. Coal-fired boilers cannot use fuel or gas, while oil-fired and gas-fired boilers cannot burn coal. Users often just bought coal-fired boilers, and coal-burning is suddenly prohibited. It is a pity to eliminate the boilers. If they are not eliminated, they cannot be used, causing a lot of waste to user...

AI Technical Summary

Problems solved by technology

The above-mentioned boilers are all single-function. Coal-fired boilers cannot burn oil or gas, while oil-fired and gas-fired boilers cannot burn coal.

Users often just bought coal-fired boilers, and coal-burning is suddenly banned. It is a pity to eliminate the boilers. If they are not eliminated, they cannot be used, causing a lot of waste to users.

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