石油学报(石油加工) ›› 2020, Vol. 36 ›› Issue (6): 1370-1378.doi: 10.3969/j.issn.1001-8719.2020.06.028

• 其他 • 上一篇    下一篇

基于钙循环的Mn-Mg修饰石灰石流态化储热及磨损特性研究

马张珂1, 李英杰1, 边志国1, 张宇2, 王涛3,  雷文涛3   

  1. 1. 山东大学 能源与动力工程学院,山东 济南 250061;
    2. 大唐七台河发电有限责任公司,黑龙江 七台河 154600;
    3. 山东纳鑫电力科技有限公司, 山东 济南 250101
  • 收稿日期:2020-06-28 修回日期:2020-07-17 出版日期:2020-11-25 发布日期:2020-12-02
  • 通讯作者: 李英杰,男,教授,博士,从事CO2捕集,热化学储热,废弃物资源化等研究,E-mail:liyj@sdu.edu.cn E-mail:liyj@sdu.edu.cn
  • 作者简介:第一作者:马张珂,女,硕士研究生,从事钼循环热化学储热的研究,E-mail:1197153702@qq.com
  • 基金资助:
    国家自然科学基金项目(51876105)和山东省重点研发计划重大科技创新工程项目(2019JZZY020118)资助

Heat Storage and Attrition Performance of Mn-Mg Modified Limestone Based on Calcium Looping Under Fluidization

MA Zhangke1, LI Yingjie1, BIAN Zhiguo1, ZHANG Yu2, WANG Tao3, LEI Wentao3   

  1. 1. School of Energy and Power Engineering, Shandong University, Jinan 250061, China;
    2. Datang Qitaihe Power Generation Co. Ltd., Qitaihe 154600, China;
    3. Shandong Naxin Electric Power Technology Co. Ltd., Jinan 250101, China 
  • Received:2020-06-28 Revised:2020-07-17 Online:2020-11-25 Published:2020-12-02
  • Supported by:
     

摘要:

以石灰石、Mn(CH3COO)2•4H2O和Mg(CH3COO)2•4H2O为原料,采用浸渍法制备了Mn-Mg修饰石灰石,研究了其在流态化下的钙循环储热性能和颗粒磨损特性。结果表明:Mn的掺入提高了CaO的储热反应速率,有助于减缓石灰石储热转化率随循环次数增加而衰减,最佳Mn/Ca摩尔比为5∶100;Mn和Mg的共同掺入使Mn-Mg修饰石灰石具有更稳定的循环储热性能,最佳Mn/Mg/Ca摩尔比为5∶8∶100;最佳条件下,Mn-Mg修饰石灰石第20次循环储热转化率分别比天然石灰石和Mn修饰石灰石提高54%和30%,其20次储热循环磨损率比Mn修饰石灰石仅增加5%。

关键词: Mn-Mg修饰石灰石, 热化学储热, 流态化, 太阳能, 钙循环

Abstract:

Using limestone, Mn(CH3COO)2•4H2O and Mg(CH3COO)2•4H2O as raw materials, the Mn-Mg modified limestone for calcium looping thermochemical heat storage was prepared by the impregnation method. The cyclic heat storage and attrition performances of Mn-Mg modified limestone under fluidization were investigated. The results show that doping Mn slows down the decay of heat storage conversion with the number of cycles and increases heat storage rate of limestone. The optimal Mn/Ca molar ratio is 5∶100. Moreover, the addition of Mn and Mg improves cyclic heat storage stability of Mn-Mg modified limestone and the optimal Mn/Mg/Ca molar ratio is 5∶8∶100. Under the optimal Mn/Mg/Ca molar ratio, Xef,20 of Mn-Mg modified limestone is 54% and 30% higher than that of natural limestone and Mn modified limestone, respectively, and the attrition rate of Mn-Mg modified limestone only increases by 5% after 20 cycles, compared to Mn modified limestone.

Key words: Mn-Mg modified limestone, thermochemical heat storage, fluidization, solar energy, calcium looping

中图分类号: