Applicability of a Multiple-Injection Burner to Dry Low-NOx Combustion of Hydrogen-Rich Fuels

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

doi:10.1115/gt2010-22286

Cited by 5 publications

(4 citation statements)

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“…A heat recovery steam generator (HRSG) produces steam using the waste heat of exhaust gas from the gas turbine, and sends the steam to the gasifier in order to produce the raw syngas and to a steam turbine in order to generate additional power. The gas turbine combustors are required to operate on oil fuel as the startup fuel at ignition and during part load in order to provide the HRSG with the waste heat until the syngas fuel is supplied to the gas turbine [3].…”

Section: Ccs-equipped Oxygen-blown Igcc Technology and Technical Hurd...mentioning

confidence: 99%

“…Step 1 evaluates performance of single burners in terms of emissions of NOx, CO, and unburned hydrocarbons (UHC), and stability, which is related to pressure fluctuations due to combustion oscillation. The single-burner combustion test showed that the operating range of stable low NOx combustion was restricted by the occurrence of combustion oscillation, and it was probably triggered by the attachment of the flame to the perforated plate due to the ignition of flammable mixtures in the wake behind the plate [3]. In order to suppress the combustion oscillation, a convex burner was suggested.…”

Section: Combustor Development 41 Development Approachmentioning

confidence: 99%

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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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Section: Ccs-equipped Oxygen-blown Igcc Technology and Technical Hurd...mentioning

confidence: 99%

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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“…These injectors are similar to LDI, but include a small premixing zone, and may approach the operability characteristics of LDI if designed carefully. Configurations in the literature include jet-in-crossflow mixing [8], coflow mixing in channels [9], and swirl-based mixing in small "cups" with radial and axial inflow [10]. The latter concept was incorporated into a 1.3 MW fuel injector array that was built with a macrolamination process and operated at pressures of 8 to 12 bar with fuels consisting of hydrogen, natural gas, nitrogen and/or carbon dioxide [11].…”

Section: Introductionmentioning

confidence: 99%

Development and Testing of a Low NOx Hydrogen Combustion System for Heavy-Duty Gas Turbines

York¹,

Ziminsky²,

Yilmaz

2013

Journal of Engineering for Gas Turbines and Power

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Interest in hydrogen as a primary fuel stream in heavy-duty gas turbine engines has increased as precombustion carbon capture and sequestration (CCS) has become a viable option for integrated gasification combined cycle (IGCC) power plants. The U.S. Department of Energy has funded the Advanced IGCC I Hydrogen Gas Turbine Program since 2005 with an aggressive plant-level NO^ target of 2 ppm at 15% O2for an advanced gas turbine cycle. Approaching this NO^ level with highly reactive hydrogen fuel at the conditions required is a formidable challenge that requires novel combustion technology. This study begins by measuring entitlement NO^ emissions from perfectly premixed combustion of the high-hydrogen fuels of interest. A new premixing fuel injector for highhydrogen fuels was designed to balance reliable flashback-free operation, reasonable pressure drop, and low emissions. The concept relies on small-scale jet-in-crossflow mixing that is a departure from traditional swirl-based premixing concepts. Single nozzle rig experiments were conducted at pressures of 10 atm and 17 atm, with air preheat temperatures of about 650 K. With nitrogen-diluted hydrogen fuel, characteristic of carbon-free syngas, stable operation without flashback was conducted up to flame temperatures of approximately 1850 K. In addition to the effects of pressure, ihe impacts of nitrogen dilution levels and amounts of minor constituents in ihe fuel-carbon monoxide, carbon dioxide, and methane-on flame holding in the premixer are presented. The new fuel injector concept has been incorporated into a full-scale, multinozzle combustor can with an energy conversion rate of more than 10 MW at F-class conditions. The full-can testing was conducted at full gas turbine conditions and various fuel compositions of hydrogen, natural gas, and nitrogen. This combustion system has accumulated over 100 h of fired testing at full load with hydrogen comprising over 90% of the reactants by volume. NOê missions (ppm) have been measured in the single digits with hydrogen-nitrogen fuel at target gas turbine pressure and temperatures. Results of the testing show that small-scale fuel-air mixing can deliver a reliable, low-NO^ solution to hydrogen combustion in advanced gas turbines.

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“…The successful introduction of CCS into IGCC plants requires advanced technologies for diluent-free ("dry"), low-NOx combustion of hydrogen-rich syngas fuels that are capable of achieving both lower NOx emissions and higher plant efficiency. The authors have been developing a "multiple-injection burner" as an advanced concept for hydrogen-rich fuels (Asai, et al, 2010(Asai, et al, , 2011. This burner consists of multiple fuel nozzles and a perforated plate with multiple air holes.…”

Section: Introductionmentioning

confidence: 99%

Multiple-injection dry low-NOx combustor for hydrogen-rich syngas fuel: testing and evaluation of performance in an IGCC pilot plant

Asai

Dodo

Karishuku

et al. 2014

Mechanical Engineering Journal

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The successful development of oxygen-blown integrated coal gasification combined cycle (IGCC) technology requires gas turbines capable of achieving the dry low nitrogen oxides (NOx) combustion of hydrogen-rich syngas for low emissions and high plant efficiency. The authors have been developing a "multiple-injection burner" to achieve the dry low-NOx combustion of hydrogen-rich syngas. This burner consists of multiple fuel nozzles and a perforated plate with multiple air holes. At each injection point, one fuel nozzle and one air hole are installed coaxially, so that a fuel jet surrounded by a sheath air jet is injected. The burner achieves low-NOx combustion by mixing fuel and air rapidly with multiple fuel-air coaxial jets, and prevents flashback into the burner by lifting the flame from itself. The purpose of this paper is to present the test results of multi-can combustors equipped with multiple-injection burners in an IGCC pilot plant, and evaluate combustor performance by focusing on the effects of flame shapes. The syngas fuel produced in the plant contained approximately 50% carbon monoxide, 20% hydrogen, and 20% nitrogen by volume. In the tests, the combustor with slenderer flames achieved lower NOx emissions of 10.9 ppm (at 15% oxygen) diluent-free with high stability and high reliability, and reduced both combustor liner and burner plate metal temperatures at the maximum gas turbine load. These findings demonstrated that the multiple-injection combustor achieved the dry low-NOx combustion of the syngas fuel in the plant. : Integrated coal gasification combined cycle (IGCC), Gas turbine, Dry low NOx combustor, Multiple injection burner, Hydrogen-rich syngas fuel

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Applicability of a Multiple-Injection Burner to Dry Low-NOx Combustion of Hydrogen-Rich Fuels

Cited by 5 publications

References 0 publications

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

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

Development and Testing of a Low NOx Hydrogen Combustion System for Heavy-Duty Gas Turbines

Multiple-injection dry low-NOx combustor for hydrogen-rich syngas fuel: testing and evaluation of performance in an IGCC pilot plant

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