Flue gas desulfurization purification device for waste heat recovery of industrial boiler

Abstract

The invention relates to a flue gas desulfurization purification device for waste heat recovery of an industrial boiler. The device comprises a smoke inlet and a first filter net, the left side of thesmoke inlet is provided with a low resistance cyclone dust collector, the lower end of the low resistance cyclone dust collector is provided with a particle recycle tank, a residual heat treatment pipe is embedded in the upper end of the low resistance cyclone dust collector, the inner upper end of the residual heat treatment pipe is connected with a first spray valve, and the upper end of the first spray valve is provided with a first connecting pipe. The device has the advantages that the first spray valve can be used for spraying a liquid medicine in a medicine box on the flue gas enteringthe heat treatment pipe in a mist form, the device can be initially contacted with particulate matters in the flue gas, the particulate matters are wet and settled to the lower end of the heat treatment pipe and reacted with alkaline substances in the flue gas to conduct a neutralization reaction, the flue gas is firstly purified, and the temperature of the flue gas is reduced to prevent the fluegas from being directly discharged and resulting in pollution of the environment.

Description

technical field [0001] The invention relates to the technical field of flue gas desulfurization and purification devices, in particular to a flue gas desulfurization and purification device for industrial boilers capable of recovering waste heat. Background technique [0002] In recent years, the problem of air pollution has become more and more serious. As a large developing country, my country will still face the severe situation of increasing air pollution for a long time to come. Prominently, the problem of atmospheric environmental pollution control has continuously attracted extensive attention from all over the world. The development of efficient, energy-saving, and cost-effective flue gas purification equipment and technologies is a fundamental solution to environmental protection issues. [0003] Existing flue gas desulfurization and purification devices can only perform simple purification of flue gas, and the effect of purification is not very satisfactory. The dis...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a flue gas desulfurization purification device for industrial boilers that can recover waste heat, so as to solve the problem that the existing flue gas desulfurization purification device proposed in the above background technology can only simply purify the flue gas, and the effect of purification It is not very ideal, the exhausted flue gas is still not up to standard, and the waste liquid generated during the purification process cannot be reused, but directly discharged, which is easy to pollute the environment. At the same time, the heat in the exhausted flue gas Very high, will cause air pollution problems

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