Conical guide smokeless vertical steam boiler

Abstract

The invention relates to a diversion cone type pure smokeless vertical steam boiler, which belongs to thermal equipment and includes a casing, a curved water pipe and a combustion device. The top of the combustion furnace is provided with a reduced high-temperature flue gas outlet. There is a secondary combustion furnace, the cross-section of the secondary combustion furnace is circular, and a diversion cone is set in the secondary combustion furnace corresponding to the high-temperature flue gas outlet. The deflector is composed of the top cover on the top of the deflector. The secondary combustion furnace is provided with a secondary combustion air port. The secondary combustion air port corresponds to the tangential direction of the secondary combustion furnace with a circular cross section, and guides the flow with the high-temperature flue gas. The air flow direction of the plate is consistent, and the top of the secondary combustion furnace is provided with a high-temperature gas outlet, which is connected to the hot gas chamber. The structure is reasonable, which can solve the problem of coal-fired black smoke emission, realize pure smokeless emission of combustion gas, have high thermal efficiency, save coal resources, and protect the environment.

Description

technical field [0001] The invention relates to a diversion cone type pure smokeless vertical steam boiler, which belongs to industrial thermal equipment. Background technique [0002] At present, vertical hand-fired steam boilers occupy a large share in the market. The typical ones are LSG series vertical bent water tube boilers. The hot gas cavity is formed between the bent water pipes, the combustion furnace of the combustion device is located below the thermal gas cavity, the grate is located below the combustion furnace, and the ash chamber is located below the grate, and a coal charging furnace door is provided corresponding to the combustion furnace, which corresponds to the ash chamber There is an ash outlet, and the ash chamber is equipped with a combustion-supporting tuyere. The high-temperature flue gas rushing up from the combustion furnace enters the hot gas chamber from the high-temperature flue gas outlet, and heats the curved water pipe, thereby heating the w...

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Problems solved by technology

[0003] In this kind of boiler, the flue gas washes all the outer and inner curved water pipes horizontally, and the process is very long. This design is beneficial to improve the heat transfer efficiency, but the system is easy to accumulate dust. Although the dust cleaning hole is designed, in order to The heat transfer makes the boiler run stably, and users often "shut down the furnace to clean the dust", which is a big problem for the operating workshop of the enterprise. Therefore, although the boiler design considers to maximize the heat transfer efficiency, but In actual use, because of serious dust accumulation, the real thermal efficiency is not high

[0004] This kind of boiler is advanced in the design of the "pot", and the entire heat transfer system has enough heat transfer area for the flue gas; however, the original and backward combustion technology is used in the design of the "furnace". The rated output power of this type of boiler is to burn the bituminous coal with heavy smoke and fire, so it is full of black smoke during operation, which not only wastes energy, but also pollutes the environment. The thick smoke is in the water-cooled tube system with good heat transfer After being rapidly collected and cooled, a large amount of evaporated coal tar and carbon chains condense and precipitate rapidly, sticking to the boiler tube and all other heat exchange surfaces, accumulating thicker and harder to remove, seriously affecting the heat transfer effect The actual thermal efficiency is much lower than the theoretical design thermal efficiency

[0005] Obviously, if there is no matching "stove" and "advanced combustion technology", even the most advanced "pot" cannot produce "advanced boilers"

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