ANALYSIS OF THE SYSTEM CAO-CO2-H2O FOR STORAGE OF SOLAR THERMAL-ENERGY

被引：26

作者：

CRIADO, JM ^{[1
]}

MACIAS, M ^{[1
]}

MACIASMACHIN, A ^{[1
]}

机构：

[1] UNIV POLITECN CANARIAS,ETS II LAS PALMAS,LAS PALMAS,SPAIN

来源：

SOLAR ENERGY | 1992年 / 49卷 / 02期

关键词：

D O I：

10.1016/0038-092X(92)90141-V

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

It has been shown that the carbonation of Ca(OH)2 takes place with a yield close to 100% at CO2 pressures ranging from 20 Torr to 1 atmosphere, while the conversions obtained from anhydrous CaO range from 22% at 20 Torr of CO2 up to 79% at 1 atmosphere. Moreover. the carbonation of CaO occurs at temperatures higher than those at which the carbonation of corresponding hydroxide occurs. Thus, at a CO2 pressure of 1 atmosphere the hydroxide is quite carbonated at 700-degrees-C, while only 60% of CaO is converted into CaCO3 under similar conditions. It has been concluded that the effect of aging is minimized if the carbonation of CaO is conducted in such a way that it takes place through Ca(OH)2 as a by-product.

引用

页码：83 / 86

页数：4