Temperature and emissions characteristics of a micro-mixing injection hydrogen-rich syngas flame diluted with N2

Zhang, Yongsheng; Zhang, Hailong; Tian, Long; Ji, Pengfei; Ma, Shanchuan

doi:10.1016/j.ijhydene.2015.07.050

Cited by 29 publications

(4 citation statements)

References 19 publications

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“…The high hydrogen content in syngas is also known to extend the lean operating limits of burners and exhibit the characteristics of inhibiting extinction in turbulent and strained flame environment [8][9][10]. However, the emissions of NO x for hydrogen diffusion flame was shown to increase due to the high calorific value and flame temperature [11,12]. To move towards low emission and hydrogen economy, development of lean premixed combustion technology is emphasised, such as the dry low NO x combustor in gas turbines and homogeneous charge compression ignition internal combustion engines [5].…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical studies on the premixed syngas swirl flames in a model combustor

Samiran

Chong

et al. 2019

International Journal of Hydrogen Energy

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Experimental and numerical investigations were performed to study the combustion characteristics of synthesis gas (syngas) under premixed swirling flame mode. Four different type of syngases, ranging from low to high H 2 content were tested and simulated. The global flame structures and post emission results were obtained from experimental work, providing the basis of validation for simulations using flamelet generated manifold (FGM) modelling approach via a commercial computational fluid dynamic software. The FGM method was shown to provide reasonable agreement with experimental result, in particular the post-exhaust emissions and global flame shapes. Subsequently, the FGM method was adopted to model the flame structure and predict the radical species in the reaction zones. Simulation result shows that H 2enriched syngas has lower peak flame temperature with lesser NO species formed in the reaction zone.

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Section: Introductionmentioning

confidence: 99%

Experimental and numerical studies on the premixed syngas swirl flames in a model combustor

Samiran

Chong

et al. 2019

International Journal of Hydrogen Energy

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“…Miniature-scale distributed premixer arrays, aka MMs, were developed and tested in several studies, in order to reduce NO x emissions safely with H 2 -rich fuel. Zhang et al 246,247 proved the effectiveness of MM combustion technology in reducing NO x in a syngas-fueled combustor. If carefully designed, MMs could approach the LDI operability characteristics.…”

Section: Combustion Characteristicsmentioning

confidence: 99%

“…It was concluded that MMs are excellent candidates for future gas turbines fueled by hydrogen or a wide variety of syngas compositions. Zhang et al 246,247 proved the effectiveness of MM combustion technology in reducing NO x in a syngas-fueled combustor. They combined CO 2 dilution with MM combustion to reduce NO x and lower the faceplate temperature at MM exit.…”

Section: Combustion Characteristicsmentioning

confidence: 99%

Frontiers in combustion techniques and burner designs for emissions control and CO₂capture: A review

et al. 2019

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Summary The use of fossil fuel is expected to increase significantly by midcentury because of the large rise in the world energy demand despite the effective integration of renewable energies in the energy production sector. This increase, alongside with the development of stricter emission regulations, forced the manufacturers of combustion systems, especially gas turbines, to develop novel combustion techniques for the control of NOx and CO2 emissions, the latter being a greenhouse gas responsible for more than 60% to the global warming problem. The present review addresses different burner designs and combustion techniques for clean power production in gas turbines. Combustion and emission characteristics, flame instabilities, and solution techniques are presented, such as lean premixed air‐fuel (LPM) and premixed oxy‐fuel combustion techniques, and the combustor performance is compared for both cases. The fuel flexibility approach is also reviewed, as one of the combustion techniques for controlling emissions and reducing flame instabilities, focusing on the hydrogen‐enrichment and the integrated fuel‐flexible premixed oxy‐combustion approaches. State‐of‐the‐art burner designs for gas turbine combustion applications are reviewed in this study, including stagnation point reverse flow (SPRF) burner, dry low NOx (DLN) and dry low‐emission (DLE) burners, EnVironmental burners (including EV, AEV, and SEV burners), perforated plate (PP) burner, and micromixer (MM) burner. Special emphasis is made on the MM combustor technology, as one of the most recent advances in gas turbines for stable premixed flame operation with wide turndown and effective control of NOx emissions. Since the generation of pure oxygen is prerequisite to oxy‐combustion, oxygen‐separation membranes became of immense importance either for air separation for clean oxy‐combustion applications or for conversion/splitting of the effluent CO2 into useful chemical and energy products. The different carbon‐capture technologies, along with the most recent carbon‐utilization approaches towards CO2 emissions control, are also reviewed.

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“…Motivated by this, Zhang et al built an experimental setup to solve this problem with N dilution. Results of their study showed that N dilution decreases temperature levels and protects burner from high thermal loads; as the dilution amount increases, temperature and NOx emission levels decrease [14]. Lee et al conducted an experimental study to examine N , CO and steam dilution e ect on combustion and emission behavior of H /CO mixtures by measuring temperature, NOx and CO levels and observing ame shape, with particular emphasis on ame instabilities.…”

Section: Introductionmentioning

confidence: 99%

An experimental study on premixed CNG/H2/CO2 mixture flames

Yılmaz

Çam

2018

Open Engineering

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Abstract:In this study, the e ect of swirl number, gas composition and CO dilution on combustion and emission behaviour of CNG/H /CO gas mixtures was experimentally investigated in a laboratory scale combustor. Irrespective of the gas composition, thermal power of the combustor was kept constant (5 kW). All experiments were conducted at or near stoichiometric and the local atmospheric conditions of the city of Kayseri, Turkey. During experiments, swirl number was varied and the combustion performance of this combustor was analysed by means of centreline temperature distributions. On the other hand, emission behaviour was examined with respect to emitted CO, CO and NOx levels. Dynamic ame behaviour was also evaluated by analysing instantaneous ame images. Results of this study revealed the great impact of swirl number and gas composition on combustion and emission behaviour of studied ames.

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Temperature and emissions characteristics of a micro-mixing injection hydrogen-rich syngas flame diluted with N2

Cited by 29 publications

References 19 publications

Experimental and numerical studies on the premixed syngas swirl flames in a model combustor

Experimental and numerical studies on the premixed syngas swirl flames in a model combustor

Frontiers in combustion techniques and burner designs for emissions control and CO₂capture: A review

An experimental study on premixed CNG/H2/CO2 mixture flames

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Temperature and emissions characteristics of a micro-mixing injection hydrogen-rich syngas flame diluted with N2

Cited by 29 publications

References 19 publications

Experimental and numerical studies on the premixed syngas swirl flames in a model combustor

Experimental and numerical studies on the premixed syngas swirl flames in a model combustor

Frontiers in combustion techniques and burner designs for emissions control and CO2capture: A review

An experimental study on premixed CNG/H2/CO2 mixture flames

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Product

Resources

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Frontiers in combustion techniques and burner designs for emissions control and CO₂capture: A review