Desulfurization and denitrification device for steel sintering flue gas

Abstract

The invention relates to the technical field of flue gas desulfurization and denitrification equipment, and discloses a desulfurization and denitrification device for steel sintering flue gas. The device comprises a denitrification chamber, a desulfurization chamber, an atomizing nozzle and a liquid inlet pipe; spoilers are fixedly arranged on the inner wall of the liquid inlet pipe; a cavity is formed in the atomizing nozzle; a through groove is formed in the atomizing nozzle; electric heating wires are fixedly arranged inside the through groove and the cavity; and a spring is fixedly arranged on the bottom surface of the desulfurization chamber. According to the desulfurization and denitrification device for steel sintering flue gas, a urea solution generates turbulence and rotates alongthe surfaces of the spoilers when passing through the spoilers, and the solution forms a vortex-like flow in the liquid inlet pipe, so that separated crystals cannot be attached to the pipe wall, andthen smoothness of the nozzle is ensured. Meanwhile, the urea solution is heated by the electric heating wires when reaching the nozzle, so that the separated crystals are dissolved in the solvent again, and blockage of the nozzle is further avoided.

Description

technical field [0001] The invention relates to the technical field of flue gas desulfurization and denitrification equipment, in particular to a steel sintering flue gas desulfurization and denitrification equipment. Background technique [0002] Flue gas desulfurization and denitrification equipment is a tail gas treatment equipment that removes sulfur dioxide and nitrogen oxides in the flue gas generated after steel sintering. [0003] The structure of common flue gas desulfurization and denitrification equipment is as follows: figure 1 As shown, it includes the denitration chamber and the desulfurization chamber. The tops of the denitration chamber and the desulfurization chamber are equipped with liquid inlet pipes and nozzles. The nozzles on the top of the denitration chamber are used to spray urea solution for denitrification. Since the urea solution enters the liquid inlet pipe from the storage tank During the spraying process, the heat dissipation temperature of th...

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a steel sintering flue gas desulfurization and denitrification equipment, which is equipped with a turbulent flow heating nozzle to ensure that the urea solution can be sprayed out smoothly, avoiding crystallization, and a buffer refraction device that can absorb silicon dioxide particles. Kinetic energy and buffering can avoid the scour wear on the bottom surface of the desulfurization chamber, which solves the problems of common flue gas desulfurization and denitrification equipment, such as urea solution is easy to crystallize and block the nozzle, and silica particles in the limestone slurry are easy to hit the bottom surface of the desulfurization chamber to cause scour wear.

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