Two-step cooling and self-heating device for eliminating white smoke, dehumidifying and removing harmful particles

Abstract

The invention relates to the technical field of energy conservation and environmental protection, in particular to a two-step cooling and self-heating device for eliminating white smoke, dehumidifyingand removing harmful particles. The method comprises the following steps of: (1) analyzing smoke components; (2) selecting an equipment material or a coating material; (3) establishing a whitening parameter set and a two-step cooling and self-heating process according to thermodynamic and aerodynamic characteristics; (4) cooling primary high-temperature flue gas; (5) carrying out secondary cooling of secondary flue gas; (6) carrying out a self-heating process of the cooled flue gas; (7) if a water cooling device is adopted, circulating cooling water into a cooling tower; and if an air coolingdevice is adopted, enabling water condensed from air to flow into a standby water tank; and (8) circulating the circulating water in the cooling tower to a spraying device through a water pump or without a water pump to carry out secondary cooling on the secondary flue gas. The method is simple and feasible in process and low in use cost, does not need an external medium, and can be widely applied to white smoke elimination and dehumidification of flue gas and removal of harmful substances by utilizing existing conditions in power plants and steel mills.

Description

technical field [0001] The invention relates to the technical field of energy saving and environmental protection, in particular to a two-step cooling, self-heating, whitening and dehumidification device and a device for removing harmful particles. Background technique [0002] In recent years, my country's air governance has been upgraded to the national strategic level. The biggest problem of environmental pollution in many cities in China is that the average concentration and peak concentration of PM2.5 and PM10 exceed the standard. The focus of treatment is concentrated in the industrial field, especially the treatment of white or colored smoke plumes in various industrial fields, and the smoke contains a large amount of harmful particles. [0003] In order to control air pollution, a large number of desulfurization and denitrification projects have been invested in the industrial field in recent years, especially wet desulfurization. After the flue gas enters the ambie...

AI Technical Summary

Problems solved by technology

There is a need for "white smoke" treatment. First, despite the desulfurization and denitrification treatment, the flue gas still contains a small amount of SO 2 It will cause harm to the environment and production equipment; second, the clouds and fog formed above the factory will affect the corporate image

At present, many scientific researchers have proposed some prevention and control measures, including heating method or condensation method, etc., but there are more or less deficiencies, including corrosion of equipment materials, elimination technology or high processing costs, etc.

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