A system for integrated removal of multiple pollutants from near-zero emission type flue gas

摘要

A system for integrated removal of multiple pollutants from a near-zero emission type flue gas, characterized in that the system comprises an economizer (1), an air preheater (2), an electrostatic deduster (3), a flue gas cooler (4) and a low-temperature adsorption tower (5); andthat flue gas from a boiler enters a shell-side inlet of the economiser (1), and boiler feedwater enters a tube-side inlet, a shell-side outlet of the economiser (1) being connected to the tube-side inlet of the air preheater (2), with inlet air of the boiler in a shell-side inlet of the air preheater (2), a tube-side outlet of the air preheater (2) being connected to the electrostatic precipitator (3), a bottom of the electrostatic precipitator (3) being provided with a dust discharge opening, a flue gas outlet of the electrostatic precipitator (3) connected to the flue gas cooler (4), wherein a bottom of the flue gas cooler (4) is provided with a condensed water outlet, wherein an outlet for the cold flue gas is connected to the top of the low-temperature adsorption tower (5), the low-temperature adsorption tower (5) is equipped with an outlet for cleaned flue gases at the stern.