Modification of CaO-based sorbents prepared from calcium acetate for CO2 capture at high temperature

被引：24

作者：

Liu, Xiaotong ^{[1
,2
,3
]}

Shi, Junfei ^{[1
,2
,3
]}

He, Liu ^{[1
,2
,3
]}

Ma, Xiaoxun ^{[1
,2
,3
]}

Xu, Shisen ^{[4
]}

机构：

[1] Northwest Univ, Sch Chem Engn, Xian 710069, Peoples R China

[2] Minist Educ Adv Use Technol Shanbei Energy, Chem Engn Res Ctr, Xian 710069, Peoples R China

[3] Shaanxi Res Ctr Engn Technol Clean Coal Convers, Xian 710069, Peoples R China

[4] Clean Energy Technol Res Inst, China Huaneng Grp, Beijing 100098, Peoples R China

来源：

CHINESE JOURNAL OF CHEMICAL ENGINEERING | 2017年 / 25卷 / 05期

关键词：

CO2; capture; CaO-based sorbent; Carbonation conversion; Cyclic stability; Critical time; Mesoporous structure; OXIDE BASED SORBENTS; NANOPOROUS TIO(OH)(2); SELF-REACTIVATION; CARBON-DIOXIDE; CALCINATION; PERFORMANCE; LIMESTONE; CYCLES;

D O I：

10.1016/j.cjche.2016.10.015

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

CaO-based sorbent is considered to be a promising candidate for capturing CO2 at high temperature. However, the adsorption capacity of CaO decreases sharply with the increase of the carbonation/calcination cycles. In this study, CaO was derived from calcium acetate (CaAc2), which was doped with different elements (Mg, Al, Ce, Zr and La) to improve the cyclic stability. The carbonation conversion and cyclic stability of sorbents were tested by thermogravimetric analyzer (TGA). The sorbents were characterized by N-2 isothermal adsorption measurements, scanning electron microscopy (SEM) and Xray diffraction (XRD). The results showed that the cyclic stabilities of all modified sorbents were improved by doping elements, while the carbonation conversions of sorbents in the 1st cycle were not increased by doping different elements. After 22 cycles, the cyclic stabilities of CaO-Al, CaO-Ce and CaO-La were above 96.2%. After 110 cycles, the cyclic stability of CaO-Al was still as high as 87.1%. Furthermore, the carbonation conversion was closely related to the critical time and specific surface area. (C) 2016 The Chemical Industry and Engineering Society of China, and Chemical Industry Press. All rights reserved.

引用

页码：572 / 580

页数：9

共 40 条

[21]

Liu X. T., 2013, 12 JAP CHIN S COAL C

[22] A Novel Parallel Architecture with Fault-Tolerance for Joining Bi-Directional Data Streams in Cloud [J].

Liu, Xinchun ;

Fan, Xiaopeng ;

Li, Jing .

2013 INTERNATIONAL CONFERENCE ON CLOUD COMPUTING AND BIG DATA (CLOUDCOM-ASIA), 2013, :30-37

[23] Calcium oxide based sorbents for capture of carbon dioxide at high temperatures [J].

Lu, Hong ;

reddy, Etti P. Reddy ;

Smirniotis, Panagiotis G. .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2006, 45 (11) :3944-3949

[24] Flame-Made Durable Doped-CaO Nanosorbents for CO2 Capture [J].

Lu, Hong ;

Khan, Ataullah ;

Pratsinis, Sotiris E. ;

Smirniotis, Panagiotis G. .

ENERGY & FUELS, 2009, 23 (1-2) :1093-1100

[25] Development and Performance of CaO/La2O3 Sorbents during Calcium Looping Cycles for CO2 Capture [J].

Luo, Cong ;

Zheng, Ying ;

Ding, Ning ;

Wu, Qilong ;

Bian, Guan ;

Zheng, Chuguang .

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 2010, 49 (22) :11778-11784

[26] Thermal activation of CaO-based sorbent and self-reactivation during CO2 capture looping cycles [J].

Manovic, Vasilije ;

Anthony, Edward J. .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2008, 42 (11) :4170-4174

[27] Testing postcombustion CO2 capture with CaO in a 1.7 MWt pilot facility [J].

Sanchez-Biezma, A. ;

Paniagua, J. ;

Diaz, L. ;

Lorenzo, M. ;

Alvarez, J. ;

Martinez, D. ;

Arias, B. ;

Diego, M. E. ;

Abanades, J. C. .

GHGT-11, 2013, 37 :1-8

[28]

[师琦 SHI Qi], 2009, [化工学报, Journal of Chemical Industry and Engineering (China)], V60, P641

[29] Carbonate looping experiments in a 1 MWth pilot plant and model validation [J].

Stroehle, Jochen ;

Junk, Markus ;

Kremer, Johannes ;

Galloy, Alexander ;

Epple, Bernd .

FUEL, 2014, 127 :13-22

[30] Enhancement of CO2 capture capacity by modifying limestone with propionic acid [J].

Sun, Rongyue ;

Li, Yingjie ;

Wu, Shuimu ;

Liu, Changtian ;

Liu, Hongling ;

Lu, Chunmei .

POWDER TECHNOLOGY, 2013, 233 :8-14

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