The production of zinc by thermal dissociation of zinc oxide—solar chemical reactor design

Haueter, Philipp; Moeller, S.; Palumbo, Robert; Steinfeld, Aldo

doi:10.1016/s0038-092x(00)00037-2

Cited by 159 publications

(61 citation statements)

References 10 publications

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“…The ZnO/Zn as well as the Fe 3 O 4 /FeO redox pair have already been analyzed and tested in solar reactors [65,66,69,[71][72][73][74]. Both systems require the quenching of the reduction products in order to prevent re-oxidation.…”

Section: Thermochemical Cycles Under Considerationmentioning

confidence: 99%

“…Quenching is, thus, not only required to avoid re-oxidation but also to separate the products. Haueter et al presented the design of a conical rotating cavity receiver, in which the metal also serves as the solar absorber [72]. The reactants are fed into the reactor as a powder and form a thick layer on the wall due to the centripetal acceleration forces.…”

Section: Possible Reactor Configurationsmentioning

confidence: 99%

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Functioning devices for solar to fuel conversion

Mul¹,

Schacht²,

Swaaij³

et al. 2012

Chemical Engineering and Processing: Process Intensification

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a b s t r a c tThis paper provides a perspective on the technologies capable of converting solar energy, CO 2 and H 2 O into an easy to use fuel. The paper addresses bio-based approaches, but mainly focuses on (i) the combination of photovoltaic (PV) devices and electrocatalysis, (ii) single unit operation by photocatalytic conversion, and (iii) solar thermal conversion. Each option is described in a general manner, including a brief evaluation of the advantages and disadvantages. Also suggestions for future research endeavours are given. Based on the used literature data, for electrocatalytic and photocatalytic technologies, dramatic improvements should be made in material optimization, as well as reactor design and operation. Large efficiency gains are necessary to enable use of these technologies in practice. Solar thermal conversion is more mature, and requires specific optimization in processing, as will be discussed.

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Section: Thermochemical Cycles Under Considerationmentioning

confidence: 99%

Section: Possible Reactor Configurationsmentioning

confidence: 99%

Functioning devices for solar to fuel conversion

Mul¹,

Schacht²,

Swaaij³

et al. 2012

Chemical Engineering and Processing: Process Intensification

View full text Add to dashboard Cite

show abstract

“…[9][10][11][12] The goal from both activities is to develop science and technology for reducing society's demand for fossil. The work is focused on the development of solar chemical reactors that operate at temperatures from 1200 -2200 K. Physical chemistry questions with regard to the mechanisms and rates of decomposition and re-oxidation reactions are being investigated [13,14].…”

Section: Fuel Production and Processingmentioning

confidence: 99%

“…Reactors from 5 kW up to near 0.5 MW are being designed and tested. [10][11][12] An example of a sunlight to fuels process under investigation is the development of a process for the direct thermal decomposition of ZnO to its elements. [9] In this process, concentrated sunlight provides hightemperature process heat for the endothermic reaction ZnO → Zn + 0.5O 2 .…”

Section: Fuel Production and Processingmentioning

confidence: 99%

The role of chemical processes in the transition to sustainable energy systems

2003

Fuel and Energy Abstracts

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Chemical science and engineering play a central role in improving the eco-efficiency of energy services, be it by optimizing fossil fuel utilization from the source to the sinks, be it by exploring new ways of replacing fossil fuels with renewable ones. Catalytic fuel processing is required for providing clean and easy to convert inputs from contaminated and/or high molecular weight primary resources into efficient energy conversion systems such as advanced combustion engines and fuel cells. The switch from conventional fossil fuel resources to renewables such as solar or biomass requires new approaches in chemical engineering. Efficiency vs. emissions trade-offs for improving the eco-performance of combustion engines need to be optimized with improved understanding of the complex chemistry taking place in flames. New materials for fuel cells and batteries provide a means of making these devices applicable, thereby drastically cutting down on emissions from energy systems. Chemistry is not only involved in fuel processing and conversion, but it is also important at the end of the pipe, i.e. in catalytic emission control devices, in the treatment of hazardous residues from the incineration of waste materials, and in the complex interactions of air pollutants with the biosphere.

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“…The solar reactors generally can be classified in to two categories based on the mechanism of solar radiation catching: Those of direct coupled receiving and those of indirectly coupled receiving. A type of reactor of direct coupled receiving is the designed by Haueter et al, (1999), which consists of a rotatory cavity with a transparent window of the receiving center which is aligned with the particle set that are held by centrifugal force. With this arrangement, the solid particles are directly exposed to high-flux solar irradiation.…”

Section: Introductionmentioning

confidence: 99%

Heat Transfer Numerical Analysis of a Thermochemical Solar Reactor

Vázquez–Rodríguez¹,

Varela-Ham²,

Avalos-Zuniga³

et al. 2014

Energy Research Journal

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In this study a 2D transient temperature distribution in a onedimensional thermochemical solar reactor of gas-particles is presented. The gas-particles medium is contained in a reactor where an endothermic chemical reaction of some oxide-metal at high temperature is expected to be occurred. The reactor receives the concentrated solar power on the reactor walls, or directly to the gas-particles medium. As expected the temperature distribution in the reactor is quite homogeneous when it operates to close steady state conditions, but also due to the fact that the inlet cold gas is reheated with the exit warm gas. However, when the reactor starts to operate, the temperature distribution is non-homogeneous depending on how the reactor receives the concentrated solar power.

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The production of zinc by thermal dissociation of zinc oxide—solar chemical reactor design

Cited by 159 publications

References 10 publications

Functioning devices for solar to fuel conversion

Functioning devices for solar to fuel conversion

The role of chemical processes in the transition to sustainable energy systems

Heat Transfer Numerical Analysis of a Thermochemical Solar Reactor

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