High-Temperature Energy Storage: Kinetic Investigations of the CuO/Cu2O Reaction Cycle

Thermochemical energy storage (TCES) is considered a possibility to enhance the energy utilization efficiency of various processes. One promising field is the application of thermochemical redox systems in combination with concentrated solar power (CSP). There, reactions of metal oxides are in the focus of research, because they allow for an increase in the process temperature. The reaction system CuO/Cu2O has been reported as a suitable candidate for TCES. For proper development and modeling of combined CSP–TCES processes, reliable kinetic data are necessary. This work studies the reduction of CuO and the oxidation of Cu2O under isothermal and isokinetic conditions. The reactions are analyzed using a simultaneous thermal analysis (STA) and a lab-scale fixed-bed reactor. The reaction behavior shows significant differences between both analyses. To develop kinetic models, the non-parametric kinetic (NPK) approach is used. This model-free approach is expanded by the Arrhenius correlation to increase the app...

[1]  M. Romero,et al.  Concentrating solar thermal power and thermochemical fuels , 2012 .

[2]  J. Sempere,et al.  The NPK method: An innovative approach for kinetic analysis of data from thermal analysis and calorimetry , 2002 .

[3]  Gene H. Golub,et al.  Singular value decomposition and least squares solutions , 1970, Milestones in Matrix Computation.

[4]  G. R. Heal,et al.  Solid–liquid diffusion controlled rate equations , 1999 .

[5]  J. Sempere,et al.  The Non-Parametric Kinetics A New Method for the Kinetic Study of Thermoanalytical Data , 1998 .

[6]  Saffa Riffat,et al.  The latest advancements on thermochemical heat storage systems , 2015 .

[7]  L. Cabeza,et al.  Parameters to take into account when developing a new thermochemical energy storage system , 2012 .

[8]  E. Teller,et al.  ADSORPTION OF GASES IN MULTIMOLECULAR LAYERS , 1938 .

[9]  F. Winter,et al.  Systematic search algorithm for potential thermochemical energy storage systems , 2016 .

[10]  Stuart A. Scott,et al.  Kinetics of oxygen uncoupling of a copper based oxygen carrier , 2016 .

[11]  JoAnn S. Lighty,et al.  Chemical Looping with Copper Oxide as Carrier and Coal as Fuel , 2011 .

[12]  Christian Sattler,et al.  Solar-heated rotary kiln for thermochemical energy storage , 2012 .

[13]  Anders Lyngfelt,et al.  Investigation of Mn3O4 With Stabilized ZrO2 for Chemical-Looping Combustion , 2006 .

[14]  Kevin J. Whitty,et al.  Measurement and modeling of decomposition kinetics for copper oxide-based chemical looping with oxygen uncoupling , 2014 .

[15]  S. Mauran,et al.  Thermochemical process for seasonal storage of solar energy: Characterization and modeling of a high density reactive bed , 2012 .

[16]  G. Roger Heal,et al.  A generalisation of the non-parametric, NPK (SVD) kinetic analysis method , 2005 .

[17]  R. Nomen,et al.  Progress in Non-parametric Kinetics , 1999 .

[18]  Ali H. Abedin,et al.  A Critical Review of Thermochemical Energy Storage Systems , 2011 .

[19]  Olaf Kolditz,et al.  Non-equilibrium thermochemical heat storage in porous media: Part 1 – Conceptual model , 2013 .

[20]  Claudio A. Estrada,et al.  First experimental studies of solar redox reactions of copper oxides for thermochemical energy storage , 2015 .

[21]  Michel Cabassud,et al.  Ca(OH)2/CaO reversible reaction in a fluidized bed reactor for thermochemical heat storage , 2014 .

[22]  G. Roger Heal,et al.  A generalisation of the non-parametric, NPK (SVD) kinetic analysis method: Part 1. Isothermal experiments , 2005 .

[23]  D. Serrano,et al.  Thermochemical heat storage based on the Mn2O3/Mn3O4 redox couple: influence of the initial particle size on the morphological evolution and cyclability , 2014 .

[24]  Kevin J. Whitty,et al.  Oxidation Kinetics of Cu2O in Oxygen Carriers for Chemical Looping with Oxygen Uncoupling , 2014 .

[25]  Manuel Romero,et al.  Thermochemical energy storage at high temperature via redox cycles of Mn and Co oxides: Pure oxides versus mixed ones , 2014 .

[26]  Christian Sattler,et al.  Exploitation of thermochemical cycles based on solid oxide redox systems for thermochemical storage of solar heat. Part 1: Testing of cobalt oxide-based powders , 2014 .

[27]  J. Sempere,et al.  A new method for the kinetic study of thermoanalytical data : The non-parametric kinetics method , 1998 .

[28]  J. P. Neumann,et al.  The Cu−O (Copper-Oxygen) system , 1984 .

[29]  Ruzhu Wang,et al.  Performance analysis of an integrated energy storage and energy upgrade thermochemical solid–gas sorption system for seasonal storage of solar thermal energy , 2013 .

[30]  Martin Schmücker,et al.  The cobalt-oxide/iron-oxide binary system for use as high temperature thermochemical energy storage material , 2014 .

[31]  Anders Lyngfelt,et al.  Chemical-looping combustion in a 300 W continuously operating reactor system using a manganese-based oxygen carrier , 2006 .

[32]  Fritz Zaversky,et al.  Transient molten salt two-tank thermal storage modeling for CSP performance simulations , 2013 .

[33]  Yongfu Zhu,et al.  Oxidation Mechanism of Cu2O to CuO at 600–1050°C , 2004 .