Flue gas circulation oxygen-rich incineration system for nitrogenous organic waste gas and / or waste liquid

By using a flue gas recirculation anaerobic combustion system, the high-temperature flue gas is mixed with oxygen to aid combustion, which solves the problems of low incineration heat utilization and high flue gas denitrification costs, and achieves efficient waste heat recovery and environmentally friendly emissions.

CN224230016UActive Publication Date: 2026-05-12SHAANXI BLOWER GROUP
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Patent Information

Application Number
CN202520768821.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-22
Publication Date
2026-05-12
Estimated Expiration
2035-04-22

AI Technical Summary

Technical Problem

Existing incinerators have low incineration heat utilization rate, high nitrogen oxide content in flue gas, large flue gas flow rate, low waste heat utilization rate, high flue gas denitrification cost, and complex system when treating nitrogen-containing organic waste gas and waste liquid.

Method used

The system employs a flue gas recirculation multi-oxygen combustion system, which uses recirculated flue gas mixed with oxygen as combustion aid to reduce nitrogen content and increase oxygen concentration. It is designed as a vertical or horizontal incinerator with a combustion temperature of 1100℃~1300℃ and is connected to a waste heat boiler for waste heat recovery. The system is equipped with adjustable oxygen concentration and temperature and flexible flue gas purification units.

Benefits of technology

It improves the utilization rate of incineration heat, reduces the cost of flue gas denitrification, simplifies system configuration, reduces flue gas volume and purification difficulty, and achieves efficient waste heat recovery and environmentally compliant emissions.

✦ Generated by Eureka AI based on patent content.
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Abstract

The utility model provides a flue gas circulation oxygen-rich incineration system for nitrogenous organic waste gas and / or waste liquid, which comprises an incinerator, a combustion-supporting gas burner, a waste liquid burner and / or waste gas burner are arranged on the incinerator, the combustion-supporting gas burner is connected with a gas delivery pipe through a pipeline, and the flue gas circulation oxygen-rich incineration system further comprises a waste heat boiler connected with the incinerator through a pipeline. The waste heat boiler is connected with a flue gas conveying pipeline and a low-pressure steam or high-temperature hot water recycling conveying pipeline; a gas inlet of the flue gas drying tower is communicated with a flue gas conveying pipeline, a gas outlet of the flue gas drying tower is connected with a first output pipe, the first output pipe is connected with a first three-way valve, and the first three-way valve is respectively connected with a first conveying pipe and a second conveying pipe; the oxygen supply unit is connected with a mixer through a pipeline, the mixer is connected with a first conveying pipe, and an outlet of the mixer is connected with the combustion-supporting gas burner, the waste liquid burner and / or the waste gas burner through pipelines. According to the utility model, the heat utilization rate is improved, and the flue gas denitration cost is reduced.
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