Rotary soot blower device and soot blower method for improving uniformity of denitrification inlet flue flow field

Abstract

The invention relates to a rotary soot blower device and a soot blower method for improving the uniformity of a denitrification inlet flue flow field, and belongs to the technical field of coal-firedpower plant flue soot deposition prevention. The rotary soot blower device comprises a compressed air mother pipe, a compressed air branch pipe, a pressure gage and a rotary soot blowing air cap, wherein the compressed air mother pipe communicates with a house-service compressed air pipeline; the compressed air branch pipe communicates with the compressed air mother pipe; the rotary soot blowing air cap communicates to the compressed air branch pipe; the pressure gage is arranged on the compressed air branch pipe; the pressure gage and the rotary soot blowing air cap are sequentially arrangedalong a compressed air flowing direction; the rotary soot blowing air cap is arranged in a flue; a flow guiding plate is arranged in the flue and is connected with a downstream flue; and the flue, theflow guiding plate and the downstream flue are sequentially arranged along a flue gas flowing direction. According to the rotary soot blower device and the soot blower method for improving the uniformity of the denitrification inlet flue flow field provided by the invention, a largen umber of manpower and time spent on clearing soot deposition during machine halt every time due to severe soot deposition are saved, and the flue leakage caused by long-time erosion of a conventional soot blower is avoided.

Description

technical field [0001] The invention relates to a rotary soot blowing device and a soot blowing method for improving the flow field uniformity of a flue at a denitrification inlet, and belongs to the technical field of prevention and control of soot accumulation in a flue of a coal-fired power plant. Background technique [0002] Dust accumulation in the boiler flue of coal-fired power plants is a common problem in coal-fired power plants. In recent years, as the country has become more and more stringent on the discharge of pollutants from coal-fired power plants, coal-fired boilers are basically equipped with denitrification systems to meet the boiler NO x Emission compliance requirements. The commissioning of denitrification equipment is not completed in the early stage of boiler design, but is added later due to environmental protection requirements. This makes most units have the same flue size as the original boiler economizer outlet flue size when the denitrification...

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Problems solved by technology

[0006] The purpose of the present invention is to effectively solve the problem of serious ash accumulation in the flue of the denitrification inlet of a coal-fired power plant, save manpower and time for cleaning ash, improve the uniformity of the flow field of the denitrification device, and prevent the damage of the flue caused by soot blowing in a fixed direction, and then provide A rotary soot blowing device and its soot blowing method for improving the flow field uniformity of the denitrification inlet flue

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