Effects of Multiple-Injection-Burner Configurations on Combustion Characteristics for Dry Low-NOx Combustion of Hydrogen-Rich Fuels

Asai, Tomohiro; Dodo, Satoschi; Koizumi, Haruka; Takahashi, Hirokazu; Yoshida, Shouhei; Inoue, Hiroshi

doi:10.1115/gt2011-45295

Cited by 16 publications

(7 citation statements)

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“…A similar concept but with micro-premixing channels has been called 'Multi-Tube Mixer' by GE [33]. The micro-premixed 'multiple-injection burner' was researched by MHPS and Hitachi [34].…”

Section: Stationary Gas Turbine Combustionmentioning

confidence: 99%

Scaling of an Aviation Hydrogen Micromix Injector Design for Industrial GT Combustion Applications

Berger

2021

Aerotec. Missili Spaz.

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Decarbonising the energy grid through renewable energy requires a grid firming technology to harmonize supply and demand. Hydrogen-fired gas turbine power plants offer a closed loop by burning green hydrogen produced with excess power from renewable energy. Conventional dry low NOx (DLN) combustors have been optimized for strict emission limits. A higher flame temperature of hydrogen drives higher NOx emissions and faster flame speed alters the combustion behavior significantly. Micromix combustion offers potential for low NOx emissions and optimized conditions for hydrogen combustion. Many small channels, so-called airgates, accelerate the airflow followed by a jet-in-crossflow injection of hydrogen. This leads to short-diffusion flames following the principle of maximized mixing intensity and minimized mixing scales. This paper shows the challenges and the potential of an economical micromix application for an aero-derivative industrial gas turbine with a high-pressure ratio. A technology transfer based on the micromix combustion research in the ENABLEH2 project is carried out. The driving parameter for ground use adaption is an increased fuel orifice diameter from 0.3 mm to 1.0 mm to reduce cost and complexity. Increasing the fuel supply mass flow leads to larger flames and higher emissions. The impact was studied through RANS simulation and trends for key design parameters were shown. Increased velocity in the airgates leads to a higher pressure drop and reduced emissions through faster mixing. Altering the penetration depth shows potential for emission reduction without compromising on pressure loss. Two improved designs are found, and their performance is discussed.

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“…A similar concept but with micro-premixing channels has been called 'Multi-Tube Mixer' by GE [33]. The micro-premixed 'multiple-injection burner' was researched by MHPS and Hitachi [34].…”

Section: Stationary Gas Turbine Combustionmentioning

confidence: 99%

Scaling of an Aviation Hydrogen Micromix Injector Design for Industrial GT Combustion Applications

Berger

2021

Aerotec. Missili Spaz.

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“…Operability similar to LDI can be attained in MM burners with careful design. LDI has been used in H 2 combustion to eliminate the risks associated with flashback. , The used configurations incorporated swirl-based mixing in small cups with radial and axial inflow, co-flow mixing, and jet-like cross-flow mixing …”

Section: Existing Burner Technologies In Lpm Gas Turbinesmentioning

confidence: 99%

Review of Fuel/Oxidizer-Flexible Combustion in Gas Turbines

2020

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Strict emission control regulations call for continuous advancement in existing combustion and carbon-capture technologies to mitigate the rise in pollutants and greenhouse gases from fossil fuel combustion. Concurrently, improvements in combustion systems would also yield lower fuel consumption and operational cost with greater efficiency. This review addresses these concerns and presents the overview of different combustion technologies and burner designs for cleaner power generation in gas turbines. Emission characteristics are discussed and compared for different combustion concepts, including lean premixed air combustion and oxy-combustion. Various gas turbine burner technologies, including dry low NO x , enhanced-vortex, perforated-plate, and micromixer burners, are discussed extensively, in terms of their operating principle, fuel flexibility, and potential for superior performance under oxy-combustion conditions. Enhanced-vortex and micromixer burners show remarkable flame stability and fuel flexibility and are thus recommended for implementation with hydrogen enrichment in future oxy-fuel gas turbines. The fuel-flexibility approaches for clean energy production, such as hydrogen combustion, hydrogen-enriched combustion, syngas combustion, ammonia combustion, and fuel blending, are explored as well. With the vast recent advances in the techniques of hydrogen production and storage, hydrogen-fueled gas turbines seem to be the perfect choice for clean energy production. The adiabatic flame temperature is identified as a key controlling parameter for the design of oxidizer-flexible combustors in clean gas turbines.

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“…The convex burner was equipped with a convex perforated plate, of which the center projected into the combustion chamber and the surface was inclined. The combustion test showed that the convex burner was effective in suppressing the combustion oscillation and it expanded the operating range of stable low NOx combustion [23].…”

Section: Combustor Development 41 Development Approachmentioning

confidence: 99%

Development of a State-of-the-Art Dry Low NOx Gas Turbine Combustor for IGCC with CCS

Asai¹,

Akiyama²,

Dodo³

2017

Recent Advances in Carbon Capture and Storage

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The successful development of the coal-based integrated gasification combined cycle (IGCC) with carbon capture and storage (CCS) requires gas turbines capable of achieving dry low nitrogen oxide (NOx) combustion of hydrogen-rich syngas fuels for low emissions and high plant efficiency. This chapter describes the development of a "multi-cluster combustor" as a state-of-the-art dry low NOx combustor for hydrogen-rich syngas fuels.The combustor consists of multiple clusters of pairs of one fuel nozzle and one air hole that are installed coaxially. The essence of the design concept is the integration of two key technologies: rapid mixing of fuel and air for low NOx and flame lifting for flashbackresistant combustion. The combustor has been developed in three steps: burner development, combustor development, and feasibility demonstration for practical plants. The combustor was tested with a practical syngas fuel in a multi-can combustor configuration in an IGCC pilot plant in the final step. The combustor achieved the dry low NOx combustion of the syngas fuel in the pilot plant and the test results demonstrated the feasibility for achieving dry low NOx combustion of the syngas fuel in practical plants.

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Effects of Multiple-Injection-Burner Configurations on Combustion Characteristics for Dry Low-NOx Combustion of Hydrogen-Rich Fuels

Cited by 16 publications

References 0 publications

Scaling of an Aviation Hydrogen Micromix Injector Design for Industrial GT Combustion Applications

Scaling of an Aviation Hydrogen Micromix Injector Design for Industrial GT Combustion Applications

Review of Fuel/Oxidizer-Flexible Combustion in Gas Turbines

Development of a State-of-the-Art Dry Low NOx Gas Turbine Combustor for IGCC with CCS

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