Turbulent tube grid tower capable of improving desulfurization efficiency

Abstract

The invention provides a turbulent pipe-grid tower for improving desulfurization efficiency. By increasing the pipe grid structure to uniformly distribute the flue gas flow field, uniformly spray the slurry, and form a liquid-holding layer on the upper part of the device, the gas-liquid contact area is increased, thereby improving the desulfurization efficiency. At the same time, the liquid-holding layer can also play a certain role in dust removal. And compared with the tray tower and the rotary sink coupling tower, its structure is simple, the manufacturing process is also simplified, the resistance is also greatly reduced, the production and operation costs are reduced, and it is also convenient for maintenance. The technical solution adopted is: a turbulent pipe grid tower for improving desulfurization efficiency, including tower body, flue gas inlet and spray layer; a pipe grid structure is arranged between the flue gas inlet and spray layer, including parallel layered arrangement There are at least two layers of tube arrays; the tube array includes several parallel tubes; the vertical projections of any one tube and the tubes in the adjacent tube arrays of the tube array do not overlap or partially overlap.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to wet flue gas desulfurization equipment, and in particular to a turbulent flow pipe-grid tower for improving desulfurization efficiency. Background technique [0002] The "Coal Power Energy Conservation and Emission Reduction Upgrading and Transformation Action Plan (2014-2020)" requires the eastern region (Liaoning, Beijing, Tianjin, Hebei, Shandong, Shanghai, Jiangsu, Zhejiang, Fujian, Guangdong, Hainan and other 11 provinces and cities) to build new coal-fired power plants. The emission concentration of air pollutants from generating units has basically reached the emission limit of gas turbine units (that is, under the condition of a reference oxygen content of 6%, the emission concentrations of soot, sulfur dioxide, and nitrogen oxides are not higher than 10, 35, and 50 mg / m3 respectively). In principle, newly-built units in the region (8 provinces including ...

AI Technical Summary

Problems solved by technology

The manufacturing process of the porous tray device that acts as a turbulence in the tray tower is very complicated. The raw material of the device is made of expensive high-strength alloy materials, and due to its porous characteristics, the tray is easily blocked. Once blocked, the entire absorption tower will be damaged. The flow field will become more non-uniform and increase the liquid flux in the non-clogged part, which will cause more serious blockage and even require shutdown for maintenance in some cases

In addition, the device resistance of the tray tower is also relatively large, and it needs to be equipped with a high-power blower or induced draft fan, so the strength of the pipeline is also high, which will greatly increase the operating cost.

[0005] Another type that is widely used is the rotary sink coupling tower. The rotary sink coupling tower also has the problems of complicated manufacturing process, difficult cleaning, high resistance, high production and operating costs, and the rotary sink coupling tower needs to achieve ideal The desulfurization effect requires a lot of calculations to adjust the inclination angle, size and layout of the swirl plate according to the working environment. Once the working environment changes, the desulfurization efficiency of the swirl coupling tower may decrease

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