Investigation of Supercritical Organic Rankine Cycle Using Slag-washing Water

In this paper, the feasibility of supercritical organic Rankine cycle using slag-washing water (SWW) of blast furnace is studied. The organic fluid R125 was selected as candidate working fluid to investigate the 100kW system. The results showed that the 100kW supercritical organic Rankine cycle system can effective use of SWW 33.38 t/h, and produce net generation 68kW, the generation efficiency of the system is equal into 5% when the temperature of work fluid is at 80 degrees C. With the temperature of the work fluid temperature increasing, both net generation and generation efficiency increase, however, both recovering heat and the total consumption of power decrease.