A boiler flue gas treatment device

Abstract

The invention relates to a boiler flue gas treatment device, which includes a boiler, a boiler flue gas exhaust pipe, and a flue gas treatment system; the flue gas treatment system consists of a shell, a coil, a coil fin, a flue gas inlet and a flue gas outlet The coil is spirally coiled and placed in the shell, and the coil fins are fixed on the coil; the space enclosed between the inner surface of the shell and the outer surface of the coil is a flue gas channel; there is condensation on the inner surface of the lower part of the shell Water collection tank, the lowest position of the condensed water collection tank has a sewage outlet; the sewage outlet is connected to the condensed water treatment device to remove solids and harmful gases for treatment. The invention can utilize the heat energy of the flue gas of the boiler, and can simultaneously remove harmful substances in the flue gas.

Description

technical field [0001] The invention relates to a boiler flue gas treatment device, which can remove harmful substances in the flue gas, and belongs to the technical fields of gas pollution control and waste heat recovery. Background technique [0002] Boiler is a kind of energy conversion equipment. The energy input to the boiler is in the form of chemical energy in fuel, electric energy, heat energy of high-temperature flue gas, etc. After conversion by the boiler, it outputs steam, high-temperature water or organic heat carrier with certain heat energy. . The hot water or steam generated in the boiler can directly provide the required heat energy for industrial production and people's life, and can also be converted into mechanical energy through a steam power device, or converted into electrical energy through a generator. [0003] The flue gas temperature of the boiler is generally 120-250°C, and the heat in the flue gas and the large amount of evaporation heat loss in...

AI Technical Summary

Problems solved by technology

[0003] The flue gas temperature of the boiler is generally 120-250°C. The heat in the flue gas and the large amount of evaporation heat loss in the water vapor account for a large proportion of the heat energy loss of the boiler, with a significant proportion of 8% to 15%. heat and 11% of the latent heat of water vapor; ordinary boilers do not make full use of this energy, resulting in waste of resources, and direct discharge will cause environmental pollution

In addition, because the exhaust gas of the boiler contains CO 2 , NOx, SO 2 Harmful substances such as smoke and dust solids are the main pollutants of air pollution, causing important air pollution phenomena such as smog and acid rain

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