The effect of steam on a synthetic Ca-based sorbent for carbon capture

被引：29

作者：

Gonzalez, B. ^{[1
]}

Liu, W. ^{[2
]}

Sultan, D. S. ^{[1
]}

Dennis, J. S. ^{[1
]}

机构：

[1] Univ Cambridge, Dept Chem Engn & Biotechnol, Cambridge CB2 3RA, England

[2] Nanyang Technol Univ, Cambridge Ctr Adv Res Energy Efficiency Singapore, Singapore 637459, Singapore

来源：

CHEMICAL ENGINEERING JOURNAL | 2016年 / 285卷

基金：

英国工程与自然科学研究理事会; 新加坡国家研究基金会;

关键词：

CO2; capture; Carbonation; Calcium looping; Steam; Nucleation; FLUIDIZED-BED; CO2; CAPTURE; PRODUCT LAYER; CALCINATION; HYDRATION; CONVERSION; KINETICS;

D O I：

10.1016/j.cej.2015.09.107

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The rate and extent of a synthetic sorbent containing 83 wt% CaO, 14 wt% MgO and 3 wt% Ca12Al14O33 to react with CO2 at similar to 750 degrees C was investigated in the presence of 5 or 10 vol% steam. Similar to the natural sorbents and their derivatives, the rate and extent of carbonation by the synthetic sorbent was found to increase substantially with the partial pressure of steam. This improvement appears to be due to the ability of steam to promote the growth of product islands of CaCO3 in the direction normal to the surface, as well as affecting the porosity of the calcined material. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：378 / 383

页数：6

共 37 条

[1] Conversion limits in the reaction of CO2 with lime [J].