Regenerative ammonia burner and combustion system

By designing a regenerative ammonia burner, efficient combustion and heat recovery of ammonia fuel were achieved, solving the problems of low combustion efficiency and high pollutant emissions of ammonia fuel, and improving combustion stability and heat utilization.

CN121346242BActive Publication Date: 2026-05-22FOSHAN XIANHU LAB
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Patent Information

Application Number
CN202511914936.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-12-18
Publication Date
2026-05-22
Estimated Expiration
2045-12-18

AI Technical Summary

Technical Problem

Ammonia fuel has a low calorific value, high ignition energy, low flame propagation speed, narrow flammability limit, and a large amount of nitrogen oxides generated during combustion. This limits its application in the industrial field and results in insufficient utilization of its heat, leading to energy waste and pollutant emissions.

Method used

Design a regenerative ammonia burner, comprising a heat storage box and a combustion shell, which switches between two operating states: in the flue gas state, recovers heat from the flue gas and performs denitrification; in the combustion state, uses combustion-supporting fuel to heat ammonia, causing it to decompose and burn at high temperature. Combined with a premixed flow channel to enhance mixing, selective non-catalytic reduction and efficient combustion of nitrogen oxides are achieved.

Benefits of technology

It improves the heat utilization rate of ammonia combustion, reduces the emission of nitrogen oxides and residual ammonia, broadens the combustible range of ammonia, reduces the difficulty of ignition, and enhances combustion stability and efficiency.

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Abstract

The present application relates to the field of combustion equipment, disclose a kind of regenerative ammonia combustor and combustion system, wherein, regenerative ammonia combustor includes: regenerative box, inside is provided with regenerative flow passage, regenerative flow passage is filled with regenerator, regenerative box outside is provided with exhaust gas interface and combustion gas interface;Combustion shell, inside is provided with transfer chamber and gas outlet flow passage, transfer chamber is close to the end of gas outlet flow passage and is provided with shunt groove, the end of transfer chamber away from gas outlet flow passage is provided with inlet pipe, inlet pipe extends to shunt groove, multiple premix flow passages are arranged between transfer chamber and gas outlet flow passage in combustion shell, multiple premix flow passages and the side wall between shunt groove are respectively provided with communication hole, gas flow passage is arranged between the side of transfer chamber and the other end of regenerative flow passage in combustion shell;Ignition denitration integrated gun is inserted into gas outlet flow passage, the present application can improve the ignition and combustion stability of ammonia, and reduce the emission of ammonia, nitrogen oxides and other pollutants while recycling flue gas waste heat.
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