IGTC-141 Development of a Catalytic Combustor for a Heavy-Duty Utility Gas Turbine(Organized Session VI LOW EMISSION COMBUSTORS)

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概要

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• The most effective technologies currently available for controlling NO_x emissions from heavy-duty industrial gas turbines are either diluent injection in the combustor reaction zone, or lean premixed Dry Low NO_x (DLN) combustion. For ultra low emissions requirements, these must be combined with selective catalytic reduction (SCR) De-NO_x systems in the gas turbine exhaust. An alternative technology for achieving comparable emissions levels with the potential for lower capital investment and operating cost is catalytic combustion of lean premixed fuel and air within the gas turbine. In earlier work, the design of a catalytic combustion system using natural gas fuel has been prepared for the GE model MS9001E gas turbine. This machine has a turbine inlet temperature to the first rotating stage of over 1100℃ and produces approximately 105MW electrical output in simple cycle operation. The 508mm diameter catalytic combustor designed for this gas turbine was operated at full-scale conditions in tests conducted in 1992 and 1994. The combustor was operated for twelve hours during the 1994 test and demonstrated very low NO_x emissions from the reactor. The total exhaust NO_x level was approximately 12-15 ppmv and was produced almost entirely in the preburner ahead of the reactor. A small quantity of steam injected into the preburner reduced the NO_x emissions to 5-6 ppmv. Development of the combustion system has continued with the objectives of reducing CO and UHC emissions, understanding the parameters affecting reactor stability and spatial non-uniformities which were observed at low inlet temperature, and improving the structural integrity of the reactor system to a level required for commercial operation of gas turbines. Design modifications were completed and combustion hardware was fabricated for additional full-scale tests of the catalytic combustion system starting in March 1995. This paper presents a discussion of the combustor design, the catalytic reactor design and the results of full-scale testing of the improved combustor at MS9001E cycle conditions. Major improvements in performance were achieved with CO and UHC emissions of 10 ppmv and 0 ppmv at base load conditions.

• 公益社団法人日本ガスタービン学会の論文

著者

• Beebe K.w.

  General Electric Company

• Cutrone M.B.

  General Electric Company

• Dalla Betta

  Catalytica Incorporated, Moutain View

• Schlatter J.C.

  Catalytica Incorporated, Moutain View

• Nickolas S.G.

  Catalytica Incorporated, Moutain View

• Furuse Y.

  Tokyo Electric Power Company

• Tsuchiya T.

  Tokyo Electric Power Company

• Dalla Betta

  Catalytica Incorporated Moutain View

• Nickolas S.g.

  Catalytica Incorporated Moutain View

• Schlatter J.c.

  Catalytica Incorporated Moutain View

関連論文

• IGTC-141 Development of a Catalytic Combustor for a Heavy-Duty Utility Gas Turbine(Organized Session VI LOW EMISSION COMBUSTORS)
• IGTC-109 Development of a Gas Turbine Catalytic Combustor(Organized Session IV NO_x ABATEMENT COMBUSTORS)

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