Moisture-removal and white-smoke-elimination device for boiler exhaust gas

Abstract

A moisture-removal and white-smoke-elimination device for boiler exhaust gas comprises a gas duct which is provided with a boiler exhaust gas connecting opening, and an exhaust gas outlet is formed in the tail end of the gas duct. An air preheater used for mainly absorbing the sensible heat in the exhaust gas so as to reduce the exhaust smoke temperature of the exhaust gas is arranged in the gas duct, and a condenser used for mainly absorbing the latent heat of the water vapor in the exhaust gas so as to further reduce the temperature of the exhaust gas is arranged in the gas duct; the air preheater is a heat pipe type air preheater, wherein the liquid phase heat exchange section of the heat pipe type air preheater is arranged in the portion, in front of the condenser, of the gas duct, and the gas phase heat exchange section of the heat pipe type air preheater is arranged in the portion, behind the condenser, of the gas duct; the condenser is a water circulation condenser which adopts circulating water to cool the exhaust gas, and a condensate water discharging outlet is formed in the water circulation condenser. The moisture-removal and white-smoke-elimination device has the advantages that the structure is simple, the use is convenient and reliable, the content of the water vapor in the boiler exhaust gas can be reduced, and the problem that the exhaust gas emits white smoke is solved.

Description

technical field [0001] The invention relates to a dehumidification and white smoke elimination device specially used for boiler tail gas, and belongs to the technical field of boiler tail gas treatment. Background technique [0002] The boiler exhaust gas contains a large amount of ash, carbon dioxide, sulfide and other impurities; the flue gas discharged from the chimney not only causes the loss of heat energy, but also causes great pollution to the environment. Therefore, in the prior art, the boiler tail gas is focused on solving the pollution problem of the tail gas, but there are few relevant technical solutions for how to deal with the hot and humid gas contained in the tail gas. Therefore, through the pollution control of the tail gas, the boiler tail gas running out of the chimney is generally The hot and humid gas of white smoke appears white smoke phenomenon. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies ...

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Problems solved by technology

[0002] The boiler exhaust gas contains a large amount of ash, carbon dioxide, sulfide and other impurities; the flue gas discharged from the chimney not only causes the loss of heat energy, but also causes great pollution to the environment

Therefore, in the prior art, the boiler tail gas is focused on solving the pollution problem of the tail gas, but there are few relevant technical solutions for how to deal with the hot and humid gas contained in the tail gas. Therefore, through the pollution control of the tail gas, the boiler tail gas running out of the chimney is generally Hot and humid gas with white smoke, white smoke phenomenon appears

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