Synergistic device for desulfurization absorption tower

Abstract

The invention relates to a synergistic device for a desulfurization absorption tower, belonging to the technical field of smoke gas desulfurization devices. The synergistic device is characterized in that a group of annular hoop cylinders are arranged on the section below a spraying layer and are vertical to the flow direction of smoke gas, the upper part of each annular hoop cylinder is connected with a gas distribution conical plate in an inclined manner, a group of liquid discharge holes are formed in each gas distribution conical plate at intervals, soft sealing components in jacking contact fit are matched between the adjacent annular hoop cylinders and an anti-corrosion layer of a wall plate of the absorption tower through connecting rings constituted by connecting jacking regulating devices and jacking connecting plate components, and conical covers are respectively connected between the adjacent end parts of the gas distribution conical plates. The scheme disclosed by the invention has the advantages of novel concept and reasonable structure, the outer diameter can be easily adjusted according to field actual situations, the mounting process is simple and safe, a gas distribution cone is constituted by communicating multiple sections of inclined gas distribution conical plates, the flow resistance of the smoke gas can not be obviously increased, the smoke gas in the peripheral region in the absorption tower can be re-distributed and can flow to a central region for accumulation, the bypass phenomenon of the smoke gas in the tower can be effectively eliminated, and the smoke gas desulfurization efficiency of the system can be improved.

Description

technical field [0001] The invention belongs to the technical field of flue gas desulfurization devices, and in particular relates to a desulfurization absorption tower efficiency device. Background technique [0002] At present, more than 90% of the flue gas desulfurization devices of domestic large-scale coal-fired units adopt the limestone-gypsum wet desulfurization process. In this process, the desulfurization absorption tower of the core equipment basically adopts the spray absorption structure. , there are still some deficiencies in the existing spray design of the absorption tower, mainly in: [0003] 1) Due to anti-corrosion requirements, the inner wall of the absorption tower is equipped with an anti-corrosion lining. In order to prevent the lining layer from excessive erosion and ensure the service life of the equipment, the arrangement of the spray layer in the tower must consider the anti-scouring safety between the nozzle and the inner wall of the tower Spacing...

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Problems solved by technology

[0003] 1) Due to anti-corrosion requirements, the inner wall of the absorption tower is equipped with an anti-corrosion lining. In order to prevent the lining layer from excessive erosion and ensure the service life of the equipment, the arrangement of the spray layer in the tower must consider the anti-scouring safety between the nozzle and the inner wall of the tower Spacing (about 1 meter), when arranging nozzles, the outermost nozzle arrangement spacing is restricted, and it is difficult to densely distribute. The spray coverage of its area can only guarantee 100% in theory, while the nozzle arrangement in the central area is not limited. It can be densely arranged, and the spray coverage of each nozzle can be superimposed on each other, and the spray coverage is generally above 200%; due to the obvious deviation of the spray coverage, the pressure drop of the spray layer in the area with low coverage is small, so that Flue gas is easy to escape from this area, causing flue gas bypass, thus affecting the desulfurization efficiency of the system;

[0004] 2) Due to the structural arrangement, most of the nozzles at the edge of the spray layer are located at the end of the spray group pipe, the flow channel is long, and the resistance to slurry flow is large. When the system is unstable, the spray group pipe When the slurry flow rate or pressure head fluctuates, the spray nozzles on the edge are often affected more, which will further weaken the spray coverage in the surrounding area of ​​the absorption tower, increase the possibility of flue gas bypass, and reduce the cost of the entire device. Desulfurization effect;

[0005] 3) Most of the internal components of existing desulfurization absorption towers in China are made of non-metallic materials, and the metal surface of the tower body is lined with anti-corrosion layers such as rubber or glass phosphorus sheets, which have high fire protection and safety construction requirements for technical transformation inside the equipment.

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