Coal-fired boiler hydrogen-oxygen synergistic reinforcement stable combustion system and stable combustion method

By using hydrogen and oxygen synergistically strengthening the combustion stabilization system in coal-fired boilers, and using water electrolysis to prepare oxygen and hydrogen for combustion, the problem of insufficient combustion stabilization capacity of coal-fired units is solved, and the effect of reducing minimum output and improving the energy storage peak-shaving capacity of the power plant is achieved.

CN120083978APending Publication Date: 2025-06-03HUADIAN ELECTRIC POWER SCI INST CO LTD
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Patent Information

Application Number
CN202510100759.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-22
Publication Date
2025-06-03

AI Technical Summary

Technical Problem

The existing coal-fired units lack sufficient combustion capacity during deep peak shaving, resulting in high minimum output and high cost of burner upgrades and long construction period.

Method used

The coal-fired boiler hydrogen and oxygen synergistically strengthens the combustion stabilization system, and uses the electric energy of the boiler and new energy power generation device to prepare oxygen and hydrogen through a water electrolytic device, and transport it to an oxygen-rich burner and hydrogen burner to assist in combustion, improving the boiler's combustion stabilization capacity.

Benefits of technology

The stable combustion capacity of coal-fired boilers is improved, the minimum output is reduced, the energy storage and peak shaving capacity of the power plant is improved, and energy waste is avoided.

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Abstract

The system comprises a coal-fired boiler power generation device, a new energy power generation device, a water electrolysis device and a storage device. The coal-fired boiler power generation device comprises a boiler, an oxygen-enriched burner and a hydrogen burner, wherein the oxygen-enriched burner and the hydrogen burner are arranged in a hearth of the boiler. The water electrolysis device is electrically connected with the coal-fired boiler power generation device and the new energy power generation device; the storage device comprises an oxygen storage tank and a hydrogen storage tank, the input end of the oxygen storage tank is connected with the oxygen output end of the water electrolysis device, and the output end of the oxygen storage tank is connected with the oxygen-enriched combustor; the input end of the hydrogen storage tank is connected with the hydrogen output end of the water electrolysis device, and the output end of the hydrogen storage tank is connected with the hydrogen combustor. The energy storage and peak regulation device has the advantages that the stable combustion capacity of a coal-fired boiler power generation device (particularly a boiler) is improved, and the energy storage and peak regulation capacity of a power plant is improved.
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