Low NOx emission characteristics of refuse-recovered low BTU gases as fuel for high efficiency gas turbines

Abstract

This paper discusses the problems of using refuse‐recovered low Btu gases as fuel of high‐temperature regenerative gas turbines. First, it is briefly described that the system using refuse‐recovered fuels has a great possibility of being superior both in energy conservation and in solving refuse disposal problems in urban areas. Next, by taking a fermentation gas of the sewage sludge and a pyrolysis gas of the municipal refuse as examples, it is confirmed that a combustion gas with the high flame temperature required for a high efficiency gas turbine can sufficiently be obtained. Finally, through a case study in which no special condition is assumed, the system using these refuse‐recovered low Btu gases whose flame temperatures are low is shown to be excellent in the thermal NOx formation characteristics as compared to that using the conventional fuel with a high calorific value.

Derivation of an index for evaluating economics of cogeneration systems and its applications

“…It is also very important to investigate environmental problems of CGSs. These will be discussed elsewhere (see Pak and Suzuki (1988)).…”

Characteristics and economic evaluation of a power plant applying oxy-fuel combustion to increase power output and decrease CO2 emission

“…Condenser outlet pressure was set at 4.90 kPa. The fuel is a natural gas consisting of CH 4 , C 2 H 6 , C 3 H 8 , etc., but for simplicity it was assumed to be composed solely of CH 4 , although the simulation model used can deal with various kinds of fuels such as city gas [34], pyrolysis gas [35], coal gas [4], and liquefied petroleum gas [36]. The miscellaneous power consumption rate was assumed to be 3%.…”

Comprehensive evaluation of a CO2-capturing high-efficiency power generation system for utilizing waste heat from factories

“…Improving net power generation efficiency (NPGE) is a fundamental way to reduce CO 2 emission from power plants. Utilization of waste heat or energy included in waste material such as municipal refuse is one of fundamental ways to achieve energy saving [1][2][3]. However, it is not enough to reduce CO 2 emission by way of energy saving.…”