Double-cyclone urea mixing device

The invention relates to a double-cyclone urea mixing device. The wall of a mixing cylinder is fixed with an injection base, and a front cyclone partition plate and a rear cyclone partition plate arefixed in the mixing cylinder; the front end part of a cyclone mixing pipe is fixed with the front cyclone partition plate, and the rear end part of the cyclone mixing pipe is fixed with the rear cyclone partition plate; front cyclone holes are formed in the front cyclone partition plate between the cyclone mixing pipe and the mixing cylinder, and front cyclone lugs are fixed on the front wall surface of the front cyclone partition plate corresponding to the positions of the front cyclone holes; rear cyclone holes are formed in the rear cyclone partition plate between the cyclone mixing pipe and the mixing cylinder, and rear cyclone lugs are fixed on the front wall surface of the rear cyclone partition plate corresponding to the positions of the rear cyclone holes; and the cyclone mixing pipe is provided with a flow guide opening, and a flow guide fin is fixed on the excircle of the cyclone mixing pipe corresponding to the position of the flow guide opening. The invention has the advantages of ingenious and efficient structure, full mixing of ammonia gas and tail gas, mixing time saving, great improvement of gas mixing efficiency and guarantee of tail gas treatment effect.