Efficient wet-type variable flow fog-spraying sprinkling dust-removing purification device

Abstract

The invention relates to an efficient wet-type variable flow fog-spraying sprinkling dust-removing purification device comprising a washing tower, wherein the lower end of the washing tower is provided with a smoke inlet tangent with the washing tower; a center steady flow column is arranged in the middle of the lower end of the washing tower to form an annular channel with the washing tower; a fog condensation trapping area, a sprinkling washing area and a dehydration demisting area are arranged above the steady flow column from bottom to top; a variable flow jet intercepting layer is arranged between the fog condensation trapping area and the sprinkling washing area; a smoke outlet is formed in the upper end of the washing tower. According to the efficient wet-type variable flow fog-spraying sprinkling dust-removing purification device, the variable flow jet intercepting layer is additionally arranged in the washing tower so that rotary flow direction jet flow and plug flow transformation are implemented in the smoke flow direction sequentially, fogdrop groups of different fine particle sizes or the fogdrop groups of an absorbent are poured into the fog condensation trapping area to form a high-density fog group fog field taking suspended particles as a core, and the fog group fog field can be efficiently condensed and intercepted by the variable flow jet intercepting layer to improve the classification purification efficiency of particulate matters with the particle size being less than 40 microns so as to improve the total dust-removing purification efficiency of sprinkling the washing tower under the condition of low energy consumption.

Description

technical field [0001] The invention relates to a dust removal and purification device, in particular to a wet-type variable flow spray spray high-efficiency dust removal and purification device for air pollution prevention and control, and belongs to the technical field of flue gas dust removal, desulfurization and purification devices. Background technique [0002] my country is in the process of rapid industrialization and urbanization, and the contradiction between the increasing difficulty of improving environmental quality and the ever-increasing environmental needs of the people has become more prominent. In the field of air pollution prevention and control, the collaborative management of multi-factor pollutants such as fine particles, sulfur dioxide, nitrogen oxides, and dioxins has been put on the agenda. At the beginning of 2013, the large-scale smoggy weather across the country has attracted widespread attention from high-level government officials and public opi...

AI Technical Summary

Problems solved by technology

[0010] The problem is: usually even if the optimally designed low-energy wet spray purification tower is used for flue gas purification and dust removal, its classification efficiency for fine particles with a particle size of 0-5um is only 50-72%, and for respirable dust with a particle size of 5-10um The classification efficiency is only 80%-90%, the purification efficiency of dust above 10μm can reach 90%-98%, and the total dust removal efficiency is 86.5%-94.5% under the usual dust particle size frequency distribution

[0011]Obviously, the existing wet flue gas spray purification technology is difficult to meet the special emission limit requirements of air pollutants

Images