Study of Carbonation of CaO for High Temperature Thermal Energy Storage

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Mitsuhiro Kubota¹  Fujio Watanabe¹  Hitoki Matsuda²  Masanobu Hasatani¹  Kyaw Kyaw² 

[1] Department of Energy Engineering & Science, Nagoya University;Research Center for Advanced Waste and Emission Management, Nagoya University

关键词: High Temperature Thermal Energy Storage;    Carbonation Reaction;    Chemical Heat Pump;    Calcium Oxide;    Calcium Carbonate;    CO2;   

DOI  :  10.1252/jcej.31.281

来源: Maruzen Company Ltd

【 摘 要 】

References(7)Cited-By(9)In view of its potential application to high temperature heat energy storage, carbonation of CaO with various CO2 pressures is investigated in the temperature range 873–1173 K by using a thermogravimetric analyzer under atmospheric conditions. For a given temperature, although the reaction takes place for a partial pressure of CO2, P, higher than the equilibrium CO2 pressure of CaCO3, Pe, the reaction rate shows a slight increase with increasing P. On the other hand, for a given P, the rate increases rapidly with increasing temperature from 973 to 1023 K, above which it decreases gradually. By applying a grain model and assuming the presence of a reaction intermediate, a possible reaction rate equation has been developed.

【 授权许可】

Unknown