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Dual Phase Renewable Fuel Combustion in an Atmospheric Gas Turbine Burner

Journal of Thermal Science 2023年第3期32卷 1278-1291页

作者： AGWU Ogbonnaya RUNYON Jon GOKTEPE Burak CHONG TUNG Cheng NG Jo-Han giles anthony VALERA-MEDINA Agustin School of Engineering Cardiff UniversityWales CF243AAUK China-UK Low Carbon College Shanghai Jiao Tong UniversityLin'gang 201306China Faculty of Engineering and Physical Sciences University of Southampton MalaysiaIskandar Puteri 79100Malaysia

Expanding the fuel flexibility of continuous combustion systems to include multiphase fuel combustion offers additional support to combat the problem of energy security and,potentially,environmental pollution.In this study,apart from establishing stability limits and measuring post-combustion emissions,flames generated from simultaneous combustion of biodiesel and syngas were examined using C_(2)*and CH*chemiluminescence imaging to capture changes in the reaction zone.The proportion of syngas in the fuel mix was varied from 0 to 30%content(by energy contribution)while maintaining a total power output of 15 kW.The overall equivalence ratio was held at 0.7 in cases other than for determining the flammability range.The results indicate a reduction of stability limits as gas proportion in fuel blend increases.Also,chemiluminescence imaging of the two targeted species suggest a general reduction in reaction rate as well as reaction zone area and length with increase in gas ratio in the dual phase tests.Furthermore,emissions performance in the context of NOxand CO was investigated as liquid-to-gas ratios were altered.Conclusively,the study demonstrates the feasibility,limitations and potential benefits of multiphase renewable fuel combustion in a swirl-stabilised burner.

关键词： dual fuel gas turbine multiphase combustion

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Investigation of Combustion of Emulated Biogas in a Gas Turbine Test Rig

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Journal of Thermal Science 2018年第4期27卷 331-340页

作者： Agustin VALERA-MEDINA anthony giles Daniel PUGH Steve MORRIS Marcel POHL Andreas ORTWEIN Cardiff University Queen's Building Cardiff CF24 3AA United Kingdom DBFZ Deutsches Biomasseforschungszentrum gemeinnutzige GmbH Leipzig 04347 Germany Hochschule Merseburg Department Engineering and Natural Sciences Merseburg 06217 Germany

Combustion of biogas in gas turbines is an interesting option for provision of renewable combined heat and power from biomass. Due to an increasing share of fluctuating renewable energies in the power grid(especially from wind and solar power), flexible power generation is of increasing importance. Additionally, with an increasing share of agricultural and municipal waste in biogas production, biogas composition is expected to be within a broader range. In this paper, the combustion of synthetic biogas(carbon dioxide and methane) in a combustion test rig with a swirl burner and a high pressure optical chamber is researched at different conditions. Results are compared to a CHEMKIN-PRO simulation using a detailed reaction mechanism. The results show that within the researched experimental matrix, stable biogas combustion for gas turbines can be achieved even with significantly changing gas composition and nominal power. Carbon dioxide concentration is varied from 0 to 60%. CO concentrations(normalized to 15% O_2) in the flue gas do not change significantly with increasing carbon dioxide in the fuel gas and, for the researched conditions, stayed below 10 ppm. NO_x concentration is below 10 ppm(normalized to 15% O_2) for pure methane, and is further decreasing with increasing carbon dioxide share in the fuel gas, which is mainly due to changing reaction paths as reaction analysis showed. Thermal load of the combustor is varied from 100% to 20% for the reference gas composition. With decreasing thermal load, normalized carbon monoxide flue gas concentration is further reduced, while NOx concentrations are remaining at a similar level around 5 ppm(normalized to 15% O_2).

关键词：燃烧能汽轮机煤气钻塔测试二氧化碳燃料气体反应机制

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