Double-spiral flow smokeless hot-water boiler of chain fire grated

Abstract

This invention relates to a hot water pure smokeless boiler, the construction of which is double circumrotating steam and it is also called as chain furnace, it belongs to pyrology equipment, which includes the case, cooling wall using water, convection tubing assembly, furnace cavity and the bottom coat burning device which constitutes the coat loading part, chain furnace assembly, the front and the rear arch of furnace, the front furnace cavity between the front arch and chain furnace assembly, the rear furnace cavity between the rear arch and the chain furnace assembly. Also there is a hot burning air outlet between the front and rear arch of the furnace, the front furnace cavity can be divided to upper and lower furnace cavity, there is a connection between them. The across section of the front furnace is a symmetric R configuration, the lower furnace cavities of which are connected, there is a burning assistant air inlet be set in the side wall of the front furnace cavity, the angle between the air inlet and the arch on the upper of furnace is vertical, and the rear part of the front furnace cavity connects the outlet of the burned hot gas. The configuration is simple and reasonable, the cost is low, the coat can be burned adequately, the hot efficiency is high, the power consumption is low, and it has no black smoke and dust when the coat is burned, at last it can protect the environment.

Description

technical field [0001] The invention relates to a chain grate type double swirl pure smokeless hot water boiler, which belongs to thermal equipment. Background technique [0002] At present, large-scale chain grate hot water boilers, which have been vigorously promoted in China and have more advanced performance, belong to the SZL series of products. Including coal loading device, chain grate, furnace front arch and furnace rear arch, the front furnace is formed between the furnace front arch and the chain grate, the rear furnace is formed between the furnace rear arch and the chain grate, the furnace front arch and the rear arch are There is a combustion hot gas outlet between them, and the thermal power is 4.2 MW-30MW, or even larger. All major boiler factories have finalized drawings and manufacturing inspection standards issued by the Ministry of Labor. [0003] Although the "pot" of these products is designed with sufficient heating surface, a large amount of dust accu...

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Problems solved by technology

[0003] Although the "pot" of these products is designed with sufficient heating surface, a large amount of dust accumulates in the heat exchange parts of the tangled and vertical tubes, which seriously affects the effect of heat conduction. At the same time, because of the backward combustion technology used, the concentration of smoke and dust is very high. , a large part of these granular dusts are "coking carbon particles" that have not been burned out in the "furnace". a large amount of coal resources

During the operation of the whole boiler equipment, the Ringelmann blackness of the flue gas exhausted in the light load state is ≤1 level. However, the enterprise users generally operate in the full load or overload state, but at this time the boiler is black. Smoke, the combustible component "volatile matter" in bituminous coal is discharged into the atmosphere in the form of smoke, and the tar soot on the heat exchange surface will also accumulate in large quantities, which seriously reduces the thermal efficiency. The carbon content of the discharged ash is above 28-30%. The comprehensive utilization rate of energy is greatly reduced, which wastes energy and pollutes the environment. This is a "worldwide problem" in the boiler industry

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