Water tube type condensation superheated steam boiler

Abstract

The invention relates to a water tube type condensation superheated steam boiler, and belongs to the field of heating device. The water tube type condensation superheated steam boiler comprises a boiler body, a flue and a superheater. The flue is internally provided with two stages of heat exchanging devices, namely, an energy saver and a condenser. According to the water tube type condensation superheated steam boiler provided by the invention, two stages of heat exchange of the energy saver and the condenser which are arranged in the flue is adopted so that the discharge smoke heat can be adequately utilized, the consumption of fuel is reduced, and the total emission is reduced. The energy saver and the condenser provided by the invention are made of corrosion resisting materials so that the water tube type condensation superheated steam boiler can resist corrosion of flue gas for a long time.

Description

technical field [0001] The invention relates to a boiler, in particular to a fuel and gas water tube condensing superheated steam boiler, which belongs to the field of heating equipment. Background technique [0002] Boiler is a kind of heating equipment. It uses coal, oil or gas as fuel, and generates heat through combustion to produce steam or hot water. The smoke and slag produced by coal will pollute the environment and endanger people's health. The technology and the treatment of flue gas are relatively complicated. Oil and gas fuels are easy to transport and use. Under good combustion conditions, there is basically no environmental pollution and high calorific value. In recent years, due to the small size and high degree of automation of fuel gas boilers, installation It is convenient and has been widely used. Urban heating boilers consume a lot of primary energy and emit a lot of pollutants. Traditionally, heating boilers in my country are mainly coal-fired. With the i...

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Problems solved by technology

This not only consumes a lot of energy, but also increases the operating cost of the boiler. For boilers fueled by natural gas, the flue gas discharged has a relatively high temperature of 150~250°C, and contains about 15%~19% of water vapor ( volume), is the main carrier of flue gas heat

If the exhaust gas temperature of the boiler is lowered to a sufficiently low level, the superheated water vapor in the flue gas will condense and release the latent heat of vaporization, and the boiler that can recover the latent heat of vaporization in the flue gas is called a condensing boiler. Traditional flue heat exchange involves defects such as low efficiency, easy corrosion of equipment, and untimely and convenient use of waste heat, which leads to a decline in the overall efficiency of the boiler and wastes a lot of energy

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