Title :
Dehydrogenation of isopropanol for utilization of waste heat: a chemical heat pump for heat and/or hydrogen storage and transport
Author :
Satyapl, S. ; Hall, Robert J. ; Evans, Charles C.
Author_Institution :
United Technol. Res. Center, East Hartford, CT, USA
Abstract :
The endothermic catalytic dehydrogenation of isopropanol has been studied both experimentally and theoretically. By optimizing the dehydrogenation reaction, a chemical heat pump/temperature amplifier may be developed for upgrading low temperature (approximately 80°C) waste heat to a more useable form (150-200°C) via the exothermic hydrogenation reaction. Methods to reduce the reaction temperature have been proposed and tested. Reaction rates for the evolution of hydrogen were measured and a kinetic model of a falling film reactor has been developed. It has been shown that simulated boiling aids in scrubbing the catalyst surface of acetone. Overall system efficiencies have been presented along with the advantages and disadvantages of the isopropanol/acetone chemical heat pump
Keywords :
boiling; catalysis; heat pumps; hydrogen economy; reaction kinetics; 150 to 200 C; 80 C; acetone catalyst surface; boiling aids; chemical heat pump; endothermic catalytic dehydrogenation; exothermic hydrogenation reaction; hydrogen storage; hydrogen transport; isopropanol dehydrogenation; low temperature waste heat; reaction temperature; temperature amplifier; waste heat recovery; Chemical technology; Heat pumps; Hydrogen storage; Inductors; Kinetic theory; Silver; Telephony; Temperature; Testing; Waste heat;
Conference_Titel :
Energy Conversion Engineering Conference, 1996. IECEC 96., Proceedings of the 31st Intersociety
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-3547-3
DOI :
10.1109/IECEC.1996.553795
