A quenching apparatus for the gaseous products of the solar thermal dissociation of ZnO

被引：54

作者：

Gstoehl, D. ^{[1
]}

Brambilla, A. ^{[1
]}

Schunk, L. O. ^{[1
]}

Steinfeld, A. ^{[1
,2
]}

机构：

[1] Paul Scherrer Inst, Solar Technol Lab, CH-5232 Villigen, Switzerland

[2] ETH, Dept Mech & Proc Engn, CH-8092 Zurich, Switzerland

来源：

JOURNAL OF MATERIALS SCIENCE | 2008年 / 43卷 / 14期

关键词：

D O I：

10.1007/s10853-007-2351-x

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Rapid cooling for avoiding the recombination of Zn vapor and O(2) derived from the solar thermal dissociation of ZnO is investigated using a thermogravimeter coupled to a quenching apparatus. The ZnO sample, which is placed in a cavity receiver and directly exposed to concentrated solar irradiation, underwent dissociation in the temperature range 1,820-2,050 K at a rate monitored by on-line thermogravimetry. The product gases were quenched by water-cooled surfaces and by injection of cold Ar at cooling rates from 20,000 to 120,000 K/s, suppressing the formation of ZnO in the gas phase and at the walls. Zinc content of the collected particles downstream varied in the range 40-94% for Ar/Zn(g) dilutions of 170 to 1,500.

引用

页码：4729 / 4736

页数：8

共 14 条

[1]

ELORZARICART E, 2002, THESIS I NAT POLYTEC

[2] Modelling of the quenching in cylindrical and annular reactors [J].

Ferrer, M ;

Lédé, J .

SOLAR ENERGY, 1999, 66 (02) :151-163

[3] Solarthermal and solar quasi-electrolytic processing and separations: Zinc from zinc oxide as an example [J].

Fletcher, EA .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 1999, 38 (06) :2275-2282

[4]

Forney L., 1986, ENCY FLUID MECH, V2, P660

[5] OPTIMUM DIMENSIONS FOR PIPELINE MIXING AT A T-JUNCTION [J].

FORNEY, LJ ;

LEE, HC .

AICHE JOURNAL, 1982, 28 (06) :980-987

[6] Solar thermal splitting of zinc oxide:: A review of some of the rate controlling factors [J].

Lédé, J ;

Elorza-Ricart, E ;

Ferrer, M .

JOURNAL OF SOLAR ENERGY ENGINEERING-TRANSACTIONS OF THE ASME, 2001, 123 (02) :91-97

[7]

MICHALSKI L, 2001, TEMPERATURE MEASUREM, P369

[8] USING UNCERTAINTY ANALYSIS IN THE PLANNING OF AN EXPERIMENT [J].

MOFFAT, RJ .

JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME, 1985, 107 (02) :173-178

[9] The production of Zn from ZnO in a high-temperature solar decomposition quench process - I. The scientific framework for the process [J].

Palumbo, R ;

Lede, J ;

Boutin, O ;

Ricart, EE ;

Steinfeld, A ;

Moller, S ;

Weidenkaff, A ;

Fletcher, EA ;

Bielicki, J .

CHEMICAL ENGINEERING SCIENCE, 1998, 53 (14) :2503-2517

[10] Likely near-term solar-thermal water splitting technologies [J].

Perkins, C ;

Weimer, AW .

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2004, 29 (15) :1587-1599

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