Ammonia and flue gas pipeline mixer for flue gas denitration

By designing a pipeline mixer for ammonia and flue gas in flue gas denitrification, the problems of uneven distribution of reactants and adhesion of reducing agent to the inner wall were solved, achieving efficient utilization of reducing agent and improving denitrification effect, and ensuring stable operation of the equipment.

CN120094371BActive Publication Date: 2026-06-02CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEMICAL CORP
Filing Date
2023-12-06
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

In existing technologies, uneven distribution of reactants and easy adhesion of reducing agents to the inner wall during flue gas denitrification processes lead to low denitrification efficiency and unstable equipment operation.

Method used

Design a flue gas denitrification ammonia gas and flue gas pipeline mixer, including a main pipeline, an inner ring pipeline, an atomizing nozzle and a flow guiding structure. By combining a variable diameter pipe section and a two-stage shrink plate, a high-speed flow is formed to prevent the reductant from adhering, and the reductant is uniformly sprayed through the atomizing nozzle to improve the uniformity of reactant distribution.

Benefits of technology

It achieves efficient utilization of reducing agent and improved denitrification effect, avoids the deposition of reducing agent on the inner wall, improves denitrification efficiency and extends equipment life.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application provides a flue gas denitration ammonia gas and flue gas pipeline type mixer, which comprises a main pipeline, a first pipe section, a variable-diameter pipe section and a second pipe section arranged in sequence along the flue gas flow direction, and the inner diameter of the first pipe section is greater than or equal to the inner diameter of the second pipe section; an inner ring pipeline is coaxially arranged in the first pipe section, and an annular gap is formed between the outer surface of the inner ring pipeline and the inner surface of the first pipe section; an atomizing nozzle is arranged at the opening of the inner ring pipeline on the side facing the variable-diameter pipe section, and the atomizing nozzle is connected to a reducing agent pipeline. According to the technical scheme of the application, the problems of uneven distribution of reactants and easy adhesion of the reducing agent to the inner wall can be improved, so that the denitration effect is improved.
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