摘要
基于溶胶-凝胶法开发出一种新型CaO基吸收剂(Ca-Al-Fe),考查了其焦油脱除及捕集CO_2的性能。结果表明:Ca-Al-Fe吸收剂的主要成分为CaO、Ca_(12)Al_(14)O_(33)、Fe_2O_3;Ca-Al-Fe吸收剂可在麦秆热解中捕集CO_2和减少焦油类物质的析出;与普通CaO相比,Ca-Al-Fe吸收剂循环捕集CO_2的性能显著提高;经过20个循环碳酸化-煅烧反应,Ca-Al-Fe的CO_2吸收量和CaO转化率降低较小,分别由0.42mg/mg、84%降低到0.34 mg/mg、67%,同时Ca-Al-Fe的机械强度显著提高;与已有研究相比,新型吸收剂在循环碳酸化性能方面具有优势。
A CaO-based sorbent（Ca-Al-Fe）was newly developed using sol-gel method,of which the performance in tar removal and CO2 capture was examined.Results show that the Ca-Al-Fe sorbent,with main components of CaO,Ca（12）Al（14）O（33） and Fe2O3,can capture the CO2 and reduce the evolution of tar species in the pyrolysis of wheat straw.The performance of Ca-Al-Fe sorbent has been significantly improved in cyclic CO2 capture,compared to ordinary CaO.After 20 cycles of ＂ carbonation-calcination＂ reaction,the CO2 capture capacity and CaO conversion rate of Ca-Al-Fe sorbent are slightly reduced,from 0.42 mg/mg and 84%to 0.34 mg/mg and 67%,accordingly,while its mechanical strength is remarkably improved.Compared with those sorbents mentioned in relevant literatures,the newly developed Ca-Al-Fe sorbent has better performance in cyclic carbonation.
作者
张媛
韩龙
林康
张浩
钟英杰
ZHANG Yuan;HAN Long;LIN Kang;ZHANG Hao;ZHONG Yingjie(Institute of Energy and Power Engineering,Zhejiang University of Technology,Hangzhou 310014,China)
出处
《动力工程学报》
CAS
CSCD
北大核心
2018年第7期578-586,共9页
Journal of Chinese Society of Power Engineering
基金
国家自然科学基金资助项目(51506186)
浙江省科技厅公益项目(2016C31103)
