Flue flow equalizer device and design method

Abstract

The invention provides a flue flow equalizer device: comprising a flow equalizer arranged in a flue with variable cross-section, a rectangular array composed of flow equalization holes is arranged on the flow equalizer, and the diameter of the flow equalization holes on the flow equalizer is from The center position of the flow equalizer increases sequentially from the edge position; the present invention also provides a design method of a flue flow equalizer device, comprising the following steps: adopting a three-dimensional simplified model of the flue, utilizing CAD fluid simulation software, and analyzing the variable section flue The structural parameters of the flue gas flow equalizer are calculated and optimized; further, the patent of the present invention adopts the three-dimensional simplified model of the flue, which greatly reduces the number of grids in the three-dimensional model of the flue, shortens the time consumed by CAD fluid simulation, and speeds up the overall process. Design speed; further, the current equalizer in the patent of the present invention is made of fluoroplastic material, which has excellent material properties such as corrosion resistance and non-stick ash, which improves the stability of the current equalizer during operation and reduces operation and maintenance costs.

Description

technical field [0001] The patent of the present invention belongs to the technical field of low-temperature flue gas flow equalization in the thermal power generation industry, that is, the flue flow equalizer and the design method at the inlet variable cross-section flue of the flue gas treatment equipment downstream of the desulfurization tower, and specifically relates to a flue flow equalizer Devices and design methods. Background technique [0002] In September 2014, the National Development and Reform Commission, the Energy Bureau, and the Ministry of the Environment jointly issued the "Coal Power Energy Conservation and Emission Reduction Upgrading and Transformation Action Plan (2014-2020)", which put forward the most stringent standards in history for the emissions of my country's thermal power industry, that is, in 6%O 2 Under certain conditions, the smoke emission concentration is not higher than 10mg / Nm 3 . Coal-fired power plants across the country have start...

AI Technical Summary

Problems solved by technology

This method realizes flue gas equalization of the variable cross-section flue by installing a figure-eight-shaped flow equalizer on the variable cross-section flue. The device is simple, and the equalizer is made of steel plate, which cannot adapt to the high-humidity flue gas downstream of the desulfurization tower, and there is corrosion Risks, and at the same time, a general design method has not been proposed, which has great limitations in the process of promotion and use

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