High-efficiency coking waste gas treatment device

The invention relates to the field of waste gas treatment, in particular to a high-efficiency coking waste gas treatment device which comprises a filtering device, an electrostatic dust collection device, a gas purification device and a purified gas discharge channel. The filtering device comprises a rectangular box body, a filtering plate, a slag scraping mechanism and a slag discharging box, waste gas is introduced through a gas inlet of the rectangular box body and filtered through the filtering plate, and waste slag left on the filtering plate after filtering is scraped by the slag scraping mechanism and falls into the slag discharging box; the electrostatic dust collection device comprises an air entraining funnel and two electrostatic generation mechanisms, the two sides of the air entraining funnel are each provided with a rectangular opening, and the electrostatic generation mechanisms are symmetrically arranged at the rectangular openings; the gas purifying device comprises a reaction tank and a wate