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

Abstract

This invention relates to a single-chain grate swirl pure smoke-free steam boiler which belongs to thermal equipment. It includes the shell, the upper part of the flag -pipe group, waterwall, drum and lower coal-fired device. The coal-fired device includes coal installation; the chain stove arranges upper coal, the stokehold push and pushes behind the stove. Front furnace chamber is composed between the stokehold arch and the chain stove row. Queen furnace chamber is composed between pushes behind the stove and the chain stove row. The top of the front furnace chamber's surface form the arch by the whorl stream burning. The oblique tones wall of the furnace chamber matches the combustion-supporting place with draught that leads to the front furnace. The combustion-supporting place with draught is tangent with the front furnace chamber top arch, and the back of furnace chamber is connected in the front burning hot gas outlet. The structure is simple reasonable, and low cost, full combustion, high thermal efficiency, low energy consumption, solved black smoke fouling problems, protection of the environment.

Description

technical field [0001] The invention relates to a chain grate type single-swirl pure smokeless hot water boiler, which belongs to thermal equipment. Background technique [0002] At present, the chain grate type hot water boiler, which has been vigorously promoted in China and has more advanced performance, belongs to the QXL series products. The structure includes the shell, the upper flag-type tube group, the water wall, the drum and the lower coal-fired device. , the coal-fired device includes 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, and the rear furnace is formed between the furnace rear arch and chain grate. There is a combustion hot gas outlet between the furnace and the rear arch, which is an advanced technology imported from Italy in my country. The convection tube in the "pot" adopts the advanced angle tube type, and the convection heating surface adopts ...

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Problems solved by technology

[0003] The boiler adopts the traditional "chain grate" structure in the "furnace" structure, referred to as "chain grate", because the applicable coal type of this structure must be "mixed bituminous coal", and this foam According to national regulations, 25-30% of gangue powder with a fineness of 100 meshes should be added to the coal (in order to make full use of gangue), which creates sufficient conditions for a large amount of fly ash. In addition, the traditional chain grate originally existed The problem of poor burning and fly ash, and the problem of smoke emission is also very prominent. The combination of smoke and dust will seriously block the effective heat exchange surface of the "pot". Although the ash cleaning hole is designed, it is always The problem of dust accumulation cannot be solved, so although this kind of boiler has a high heat exchange efficiency in theoretical design, the existence of the above problems seriously restricts the thermal efficiency of its actual operation to a large extent, and there is a lot of energy waste in operation. , low thermal efficiency, serious environmental pollution

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