Method and equipment for eliminating white smoke of desulfurized flue gas

Abstract

The invention discloses a method and equipment for eliminating white smoke of desulfurized flue gas, and the method comprises desulfurization treatment, specifically, atomization desulfurization and dust removal treatment are conducted by adopting a desulfurization tower; and a solid spray washing chamber, a condensation atomization washing chamber, a circulating fluidization filtering chamber, a mass transfer washing chamber and a dehydration demisting chamber are arranged in the desulfurization tower. The desulfurization tower performs atomization desulfurization dust removal treatment and white smoke elimination treatment, so that the desulfurization, white smoke elimination and purification work on flue gas is completed. Meanwhile, a boiler flue gas waste heat recovery technology, a flue gas heat exchange and cooling technology and a big data intelligent control technology are combined and adopted, large white smoke of desulfurized flue gas is deeply treated, white smoke elimination of the desulfurized flue gas is achieved, meanwhile, flue gas waste heat is recovered and used for heating demineralized water and supplying the demineralized water to a boiler deaerator, energy saving and consumption reduction are achieved, and large benefits are obtained; and a large amount of smoke exhaust waste heat is recycled and used for boiler smoke waste heat recycling circulating water on the front portion, closed circulation of waste heat recycling is achieved, and heated demineralized water is used for a boiler deaerator to be utilized.

Description

technical field [0001] The invention discloses a desulfurization flue gas whitening method and equipment, belonging to the technical field of flue gas whitening. Background technique [0002] Smoke is a mixture of gas and smoke and is the main cause of air pollution in residential areas. The composition of the flue gas is very complex. The gas includes water vapor, sulfur dioxide, nitrogen, oxygen, carbon monoxide, carbon dioxide, hydrocarbons, and nitrogen oxides. The smoke includes fuel ash, coal particles, oil droplets, and pyrolysis products. [0003] With the increasingly stringent national environmental protection requirements, the problem of desulfurization "big white smoke" is getting more and more attention. Based on the problem of energy consumption, although the national environmental protection policy no longer mandates desulfurization "white smoke" work, the problem of desulfurization "big white smoke" is still received widespread attention from all over the wo...

AI Technical Summary

Problems solved by technology

At present, various technologies for "whitening" of desulfurization flue gas ultimately increase energy consumption

The implementation of this project can achieve the purpose of "elimination of whiteness" without heating the flue gas, and can also achieve energy saving and emission reduction, so as to save coal consumption, which meets the national energy saving and emission reduction requirements, and reduces the consumption of coal resources. Most of the desulfurization "whitening" technologies are based on flue gas reheating, which consumes energy again, reduces energy utilization, and has poor performance

Images