Flue gas cyclone distributor for rotary spray desulfurization

Abstract

The invention discloses a flue gas cyclone distributor for rotary spray desulfurization. The flue gas cyclone distributor comprises an inner flue and an outer flue, a support with a cross structure isarranged in the inner flue, the inner flue is fixedly connected to the outer flue through the support, a circular flow equalizer is arranged on the section of an inlet of the inner flue, and a plurality of outer rotational flow pieces are arranged between an outlet of the inner flue and an outlet of the outer flue at equal radian. The beneficial effects of the invention are that: a single flue atthe bottom of a rotary spray desulfurization tower is divided into an inner flue and an outer flue which are combined, rotational flow pieces are mounted at outlets of the inner flue and the outer flue, inclination angles of the outer rotational flow pieces are larger than those of the inner rotational flow pieces, so that flue gas is divided into an upward gas flow with a large velocity component in the vertical direction and a diffusion gas flow with large rotational strength towards the periphery, the convection intensity of flue gas around an atomizing wheel is increased, and the rotational flow intensity of the flue gas in the tower is increased, so that the mixing intensity of the flue gas and a desulfurizing agent is improved, and the desulfurizing efficiency is improved.

Description

technical field [0001] The invention relates to a flue gas swirl distributor, in particular to a flue gas swirl distributor for rotary spray desulfurization, and belongs to the technical field of flue gas swirl distributors. Background technique [0002] SO2 gas is one of the main air pollutants and is the main cause of acid rain. With the rapid development of my country's industrialization, the problem of air pollution caused by SO2 is becoming more and more serious. Facing the severe pollution situation, the Ministry of Ecology and Environment issued the " Opinions on Promoting the Implementation of Ultra-Low Emissions in the Iron and Steel Industry” proposes that by the end of 2025, more than 80% of the national iron and steel enterprises will strive to complete ultra-low emission transformation, and the SO2 concentration limit will be 35mg / Nm3. [0003] The rotary spray desulfurization process is a relatively mature semi-dry desulfurization process, which is widely used b...

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Problems solved by technology

[0007] The purpose of the present invention is to solve the unreasonable distribution of flue gas in the flue gas swirl distributor. The flue gas rotates and moves upward after passing through the swirl distributor. Poor, poor drying and reaction effects, resulting in adverse effects; if the inclination angle of the swirl plate is changed to increase the swirl intensity, the vertical velocity component will be reduced and the radial velocity component will be increased, which will also cause gas, solid and liquid mixing effects It is not ideal; at the same time, the poor distribution effect also causes uneven distribution of flue gas, which leads to the problem of low desulfurization efficiency, and a flue gas swirl distributor for rotary spray desulfurization is proposed

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