Thermal design and emissions of duct-burners for combined-cycle and cogenerative plants

Luciano A. Catalano, Andrea Dadone, Dario Manodoro and Alessandro Saponaro

International Journal of Environmental Technology and Management, 2007, vol. 7, issue 1/2, 165-177

Abstract: This paper mainly aims at demonstrating that an appropriate thermo-fluid-dynamic design optimisation of duct-burners for combined-cycle and cogenerative plants allows to satisfy restrictive emission limits, while significantly reducing the thermal stresses and the undesired pressure drops. In particular, a detailed discussion on the influence of the TEG composition and of the thermal load, measured for a standard duct-burner, is proposed to justify component failure registered in plant applications. On this basis, the paper also addresses an important design criterion, usually neglected, which allows realisation of long-life and maintenance-free duct-burners, while retaining the fundamental requirement of limiting emissions. Finally, the influence of the thermal load on the emissions produced by the modified duct-burner has been experimentally measured, and analysed, with the aid of some numerical computations.

Keywords: after-burners; thermal stress; off-design; emissions; combined cycle plants; cogeneration plants; thermal design; duct burners; design optimisation; thermoduynamics; fluid dynamics; pressure drops; environmental technology; environmental impact. (search for similar items in EconPapers)
Date: 2007
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