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Optimizing the Effect of Ignition and Combustion on Carbon Oxidation Using Pulverized Fuel Burner

  • Research Article-Mechanical Engineering
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Abstract

In order to mitigate the cold start-up condition and other influencing parameters affecting the ignition and combustion, it is challenging to find the optimum condition for the ignition of different solid fuels with distinct chemical and physical properties. To increase the flexibility of lignite power plants, a newly developed start-up technique with plasma ignition technology is being implemented and studied. This work aims to experimentally evaluate the applicability of the plasma-integrated pilot-scale pulverized fuel burner under cold furnace conditions. Several operational parameters, such as thermal loads, air–fuel ratios, plasma powers and positions, and nozzle type, varied on two different types of lignite having distinct chemical and physical properties. Tests were conducted on a pilot-scale 500 kW in-house facility having an integrated plasma ignitor on a swirl burner. The tests results are compared and evaluated against the amount of carbon oxidized relative to the amount of carbon present in the coal. Results and findings on two different coals showed substantial response and flexibility of lignite under plasma ignition at cold start-ups. The results are used mutually with the stability of the flame to define the suitable operational range for each specific fuel.

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Authors and Affiliations

  1. Department of Mechanical Engineering, NED University of Engineering and Technology, University Road, Karachi, Sindh, Pakistan

    Mirza Hammad Baig & Kashif Azher

  2. Institute of Combustion and Power Plant Technology, University of Stuttgart, Stuttgart, Germany

    Reyhane Youssefi

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  1. Mirza Hammad Baig
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  2. Kashif Azher
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Correspondence to Mirza Hammad Baig.

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Baig, M.H., Azher, K. & Youssefi, R. Optimizing the Effect of Ignition and Combustion on Carbon Oxidation Using Pulverized Fuel Burner. Arab J Sci Eng 48, 3323–3337 (2023). https://doi.org/10.1007/s13369-022-07150-4

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