クローズドサイクルMHD発電用蓄熱形高温熱交換器の研究 : 第3報,排出NO_x濃度の抑制

概要

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The two-stage combustion method for controlling the NO_x emission from a closed cycle MHD power plant is examined. The method is that fuel rich combustion is done in a high temperature regenerative heat exchanger followed by a completion of combustion downstream of the heat exchanger. Experiments on a pebble bed regenerative heat exchanger demonstrate that reduction of the excess air ratio of combustion gas is quite effective to suppress NO formation in the heat exchanger as well as to promote NO decomposition by gas phase reactions in the heat storage bed. Two new concepts of combined cycle power plants are proposed, in which closed cycle MHD, gas and steam turbines are combined. The two-stage combustion method is shown to suppress the NO_x emission level significantly, without lowering the plant efficiency of the combined cycle power plants.
一般社団法人日本機械学会の論文
1986-03-25