Smoke power-type wet desulphurization ultrasonic atomization device and application thereof

Abstract

The invention discloses a smoke power-type wet desulphurization ultrasonic atomization device comprising a nozzle body and a resonant cavity, wherein the resonant cavity is arranged at the front end of the nozzle body through a centre rod. The device is characterized in that the nozzle body comprises a smoke channel and a slurry channel, wherein the slurry channel is sleeved outside the smoke channel, and an outlet of the smoke channel is a Venturi tube. In the invention, smoke exhausted from the tail of a boiler is used as a medium, by utilizing the smoke which needs to be desulfurized originally is used as the medium, the device is not only beneficial to the desulfurization of the smoke medium, but also avoids the negative effect that the power consumption of a fan is increased due to the increase of the smoke amount of a desulfurization system because other media are introduced; and the smoke reaches the supersonic velocity at the outlet of the Venturi tube, and is mixed with the slurry at the outlet of the slurry channel and drives slurry to be conveyed into the resonant cavity along the centre rod to resonate to generate ultrasonic waves, therefore, the ultrasonic atomization is realized. The structure can improve the slurry atomization performance, reduce the desulfurization cost and improve the desulfurization efficiency.

Description

technical field [0001] The invention is used in the spray tower spraying of the wet flue gas desulfurization system of the thermal power plant, and specifically refers to a flue gas dynamic wet desulfurization ultrasonic atomization device and its application. Background technique [0002] With the development and wide application of wet flue gas desulfurization technology, the efficient atomization of desulfurization medium has always been the focus of attention. At present, the commonly used atomization methods include mechanical atomization, medium atomization (steam or air, etc.), mechanical + medium atomization, bubble atomization, etc. Exploring and developing more efficient, more economical, and more applicable atomization technologies has become a key factor in improving desulfurization efficiency. , an important topic to reduce the cost of desulfurization. Atomization using ultrasonic technology is one of them. Since the late 1980s and early 1990s, ultrasonic atom...

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Problems solved by technology

[0004] At present, mechanical atomizing nozzles are generally used in desulfurization spray towers. The atomization effect of such nozzles is poor, and the slurry needs to be repeatedly pumped and atomized by the slurry circulation pump to improve the utilization rate of the slurry, and the number of nozzles required by the desulfurization device is large, so The cost of desulfurization is relatively high

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