This article discusses international practice to date in the operation of combined-cycle power plants (CCP) on blast-furnace gas (BG). It describes the most common schemes of BG use from the European list of the best available technologies for the metallurgical industry. Combined-cycle power plants in Japan and China are used as examples to demonstrate the technical-economic effectiveness of employing heatrecovery CCPs. The properties of blast-furnace gas are compared to the properties of other industrial gases. The energy potential of blast-furnace gas is calculated and compared to the potential of natural gas. The principles behind the upgrade of a standard gas-turbine power plant to burn blast-furnace gas are examined. The article also presents theoretical results obtained by the authors in the software package Thermofl ow to illustrate the effi ciency of burning blast-furnace gas in CCPs at Russian plants.
The leading gas turbines manufacturers are developing the technologies of the environmental friendly combustion of industrial and synthetic gases of low calorific values. In this case they are faced with critical problems concerning combustion stability assurance and the necessity of the gas turbines significant modernization due to the differences between the low calorific and natural gases. The numerical simulation results of the low calorific value synthetic gas combustion in the combustion chamber by means of different technologies are considered in the paper.
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