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高温材料处理:国际期刊
SJR: 0.137 SNIP: 0.341 CiteScore™: 0.43

ISSN 打印: 1093-3611
ISSN 在线: 1940-4360

高温材料处理:国际期刊

DOI: 10.1615/HighTempMatProc.v4.i3.80
12 pages

SOLAR THERMAL PRODUCTION OF ZINC: PROGRAM STRATEGY AND STATUS OF RESEARCH

Aldo Steinfeld
Department of Mechanical and Process Engineering, ETH Zurich, 8092 Zurich, Switzerland; Solar Technology Laboratory, Paul Scherrer Institute, 5232 Villigen PSI, Switzerland
A. Weidenkaff
Solar Process Technology, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
M. Brack
Solar Process Technology, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
Stephen Moller
Solar Process Technology, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
Robert Palumbo
Solar Process Technology, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland

ABSTRACT

The solar thermal production of zinc is considered for the conversion of solar energy into storable and transportable chemical fuels. The ultimate objective is to develop a technically and economically viable technology that can produce solar zinc. The program strategy for achieving such goal involves research in two paths: a direct path via the solar thermal splitting of ZnO, and an indirect path via the solar carbothermal and CH4-thermal reduction of ZnO. The chemical thermodynamics and kinetics for both paths are briefly reviewed. A vortex-flow solar reactor for reducing ZnO with CH4 is also described. Solar tests conducted at PSI solar furnaces in the temperature range 1000-1600 K yielded high chemical conversion to zinc.