Coal gasification direct-fired boiler

Abstract

The invention discloses a coal gasification direct-fired boiler, comprising a gasification furnace and a combustion furnace. The gasification furnace comprises a gasification chamber, a coal feed device, a coal gas channel, a grate and a transmission device, wherein the coal feed device and the coal gas channel are arranged on the top part of the gasification chamber; the grate and the transmission device are arranged on the bottom of the gasification chamber; the other end of the coal gas channel is communicated with the combustion furnace through a combustion device; a diffuse device is connected and arranged on the coal gas channel by pass; the combustion furnace comprises a combustion chamber and a plurality of smoke pipes; the combustion chambers and a plurality of smoke pipes are arranged in the combustion furnace side by side; the lower ends of the combustion chamber and the smoke pipes are provided with a rotary smoke chamber communicated with the combustion chamber and the smoke pipes; the top end of the combustion furnace is provided with exhaust pipes communicated with a plurality of smoke pipes; the furnace walls of the gasification furnace and the combustion furnace are coated with a water jacket respectively; a water connecting pipe and a gas connecting pipe for heat convection are arranged between the water jacket of the gasification furnace and the water jacket of the combustion furnace. The boiler has high heat efficiency of the coal and good environmental protection efficiency.

Description

technical field [0001] The invention relates to the field of boiler manufacturing, in particular to a coal gasification direct-fired boiler. Background technique [0002] The thermal efficiency of existing coal-fired industrial boilers is generally low, and the emission of air pollutants exceeds the standard, which does not meet the current situation of energy conservation and emission reduction. However, the operating cost of fuel oil and gas boilers is high, which is unbearable for ordinary users. [0003] For this reason, at present, a coal gasification boiler that converts coal into coal gas and then burns it once became a hotspot of research and development in the early 1980s. However, this kind of simple gas boiler has low conversion efficiency of coal gasification, and the heat generated in the process of coal gasification has not been utilized, so the thermal efficiency of the whole simple gas boiler is low, only about 60%. Simultaneously, the effect of its smoke e...

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Problems solved by technology

However, this kind of simple gas boiler has low conversion efficiency of coal gasification, and the heat generated in the process of coal gasification has not been utilized, so the thermal efficiency of the whole simple gas boiler is low, only about 60%. At the same time, the effect of smoke and dust removal is not ideal, and the environmental pollution is relatively serious, which does not meet the current requirements of energy saving and emission reduction.

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