Slag-washing water of blast furnace power station with supercritical organic Rankine cycle

Abstract

Organic Rankine cycle (ORC) power plant operating with supercritical parameters supplied by low temperature slag-washing water (SWW) of blast furnace was investigated. A schematic of such installation was presented with a description of its operation and the algorithm of calculations of a supercritical power plant. Two typical organic fluids with sufficiently low critical parameters were selected as candidate working fluids in the plant to study the efficiency of the system with different organic fluids. An analysis of the influence on the effectiveness of operation of a plant was carried out. With the same temperature of slag-washing water, the specific work in turbine of fluid R143a is 45% higher than that obtained for the fluid R125, however, the specific work in pump of fluid R143a is approximate equal into that one of the fluid R125.

Keywords

supercritical cycle / slag-washing water / organic Rankine cycle / power station / low temperature

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