煤焦化学链气化过程中神木煤灰对铁基载氧体反应特性及结构的影响

doi:10.12034/j.issn.1009-606X.217105

过程工程学报 ›› 2017, Vol. 17 ›› Issue (5): 995-1001.DOI: 10.12034/j.issn.1009-606X.217105

煤焦化学链气化过程中神木煤灰对铁基载氧体反应特性及结构的影响

万奇顺，刘永卓，郭庆杰*，田安红

青岛科技大学化工学院，清洁化工过程山东省高校重点实验室，山东青岛 266042

收稿日期:2017-01-04 修回日期:2017-03-30 出版日期:2017-10-20 发布日期:2017-10-10
通讯作者: 郭庆杰 qjguo@qust.edu.cn; qj_guo@yahoo.com
基金资助:
流动/多组分反应对循环载氧体尺度、结构及反应活性影响;MW级煤炭载氧体化学链气化系统关键基础化学工程问题研究-前瞻性专题;载氧体颗粒对煤中汞释放及形态转化的影响机理;煤化学链一步制甲烷系统构建及基础研究

Influence of Shenmu Coal Ash on the Reaction Characteristics and Structure of Fe-based Oxygen Carrier in Coal Char Chemical Looping Gasification

Qishun WAN, Yongzhuo LIU, Qingjie GUO^*, Anhong TIAN

Key Lab of Clean Chem. Process Shandong Province, Qingdao Univ. Sci. & Technol., Qingdao, Shandong 266042, China

Received:2017-01-04 Revised:2017-03-30 Online:2017-10-20 Published:2017-10-10
Contact: GUO Qing-jie qjguo@qust.edu.cn; qj_guo@yahoo.com

摘要/Abstract

摘要： 以水蒸气为气化剂、Fe4Al6(Fe2O3:Al2O3质量比4:6)为载氧体，在高温间歇流化床中添加神木煤灰模拟串行循环流化床，研究煤灰累积对煤焦化学链气化过程中载氧体反应性能及结构的影响. 结果表明，在800?900℃的化学链气化过程中，添加5%?15%(?)神木煤灰可降低Fe4Al6载氧体还原反应的温度、提高其还原反应速率. 添加15%神木煤灰可明显促进煤焦水蒸气气化，提高煤焦碳转化率. Fe4Al6载氧体还原反应温度为950?1000℃、系统中含20%神木煤灰及1000℃、系统中含15%神木煤灰时，神木煤灰易与Fe4Al6载氧体反应生成Fe2SiO4, FeAl2O4, CaFe4Al2O10和CaAl8Fe4O19等低熔点物质，使Fe4Al6载氧体孔堵塞、表面烧结.

关键词: 化学链气化, 载氧体, 煤灰, 流化床, 烧结

Abstract: The influence of coal ash accumulation content on the reaction between Shenmu coal char and Fe4Al6 oxygen carrier (Fe2O3: Al2O3 mass ratio 4:6) and the oxygen carrier microstructure by adding Shenmu coal ash was investigated in a laboratory-scale fluidized bed. The results showed that addition 5%?15%(?) ash can reduce the reduction reaction temperature of Fe4Al6 oxygen carrier and increase the reaction rate between oxygen carrier and coal char at the temperature of 800?900℃. Carbon conversion rate curve was fit by Gaussian peak fitting method, indicating that 15% ash can promote the char gasification stage and increase the carbon conversion rate. It found that low-melting-point compounds, such as Fe2SiO4, FeAl2O4, CaAl8Fe4O19 and CaFe4Al2O10 formed in the oxygen carrier with 20% ash at 950?1000℃ of reduction reaction temperature of Fe4Al6 oxygen carrier and with 15% ash high than 1000℃. The compounds with low melt point and low thermal conductivity may attribute to the sintering and agglomeration of the Fe4Al6 oxygen carrier.

Key words: chemical looping gasification, oxygen carrier, coal ash, fluidized bed, sintering

万奇顺刘永卓郭庆杰田安红. 煤焦化学链气化过程中神木煤灰对铁基载氧体反应特性及结构的影响[J]. 过程工程学报, 2017, 17(5): 995-1001.

Qishun WAN Yongzhuo LIU Qingjie GUO Anhong TIAN. Influence of Shenmu Coal Ash on the Reaction Characteristics and Structure of Fe-based Oxygen Carrier in Coal Char Chemical Looping Gasification[J]. Chin. J. Process Eng., 2017, 17(5): 995-1001.

参考文献

[1]Guo Q, Cheng Y, Liu Y.Coal Chemical Looping Gasification for Syngas Generation Using an Iron-Based Oxygen Carrier[J].Ind. Eng. Chem. Res, 2013, 53(1):1191-1192
[2]Yan Cao and, Pan W P.Investigation of Chemical Looping Combustion by Solid Fuels1. Process Analysis[J].Energy Fuels, 2006, 20(5):1836-1844
[3]Leion H, Mattisson T, Lyngfelt A.Solid fuels in chemical-looping combustion[J].International Journal of Greenhouse Gas Control, 2008, 2(2):180-193
[4]刘永卓, 郭庆杰, 田红景.煤化学链转化技术研究进展[J]., 2014, 33(6):1357-1364
[5]Rubel A, Yi Z, Neathery J K.Comparative Study of the Effect of Different Coal Fly Ashes on the Performance of Oxygen Carriers for Chemical Looping Combustion[J].Energy Fuels, 2012, 26(6):3156-3161
[6]Rubel A, Zhang Y, Liu K.Effect of Ash on Oxygen Carriers for the Application of Chemical Looping Combustion to a High Carbon Char[J].Oil & Gas Science & Technology, 2011, 66(2):291-300
[7]Bao J, Li Z, Cai N.Interaction between iron-based oxygen carrier and four coal ashes during chemical looping combustion[J].Applied Energy, 2014, 115(4):549-558
[8]Gu H, Shen L, Zhong Z.Interaction between biomass ash and iron ore oxygen carrier during chemical looping combustion [J]., 2015, 277:70-78
[9]Aisyah L, Ashman P J, Kwong C W.Performance of coal fly-ash based oxygen carrier for the chemical looping combustion of synthesis gas[J].Applied Energy, 2013, 109(2):44-50
[10]Azis M M, Leion H, Jerndal E.The Effect of Bituminous and Lignite Ash on the Performance of Ilmenite as Oxygen Carrier in Chemical-Looping Combustion[J].Chem. Eng. Technol, 2013, 36(36):1460-1468
[11]Zhang J, Guo Q, Liu Y, et al.Preparation and Characterization of Fe2O3Al2O3 Using the Solution Combustion Approach for Chemical Looping Combustion[J].Ind. Eng. Chem. Res, 2012, 51(39):12773-12781
[12]梅道锋, 赵海波, 马兆军.氧载体制备方法的研究[J].燃料化学学报, 2012, 40(7):795-802
[13]张云鹏, 刘永卓, 杨勤勤.废弃咖啡渣化学链气化反应特性[J].化工学报, 2016, 67(4):1303-1312
[14]程煜.铁基载氧体/煤化学链气化反应及动力学研究[D]. 青岛科技大学, 2013.
[15]廖洪强, 邓德敏.煤催化气化研究进展与煤-纸浆黑液共气化[J].煤炭转化, 2000, 23(3):1-5
[16]杨景标, 蔡宁生, 李振山.几种金属催化褐煤焦水蒸气气化的实验研究[J].中国电机工程学报, 2007, 27(26):7-12
[17]Zhou Y, Shen L, Gu H.Effect of biomass ash on performance of iron ore as oxygen carrier in chemical looping combustion[J].Dongnan Daxue Xuebao, 2015, 45(3):503-508
[18]程煜, 刘永卓, 田红景, 等.铁基复合载氧体煤化学链气化反应特性及机理[J].化工学报, 2013, 64(7):2587-2595
[19]Liu Y, Guo Q, Cheng Y.Reaction Mechanism of Coal Chemical Looping Process for Syngas Production with CaSO4 Oxygen Carrier in the CO2 Atmosphere[J].Ind. Eng. Chem. Res, 2012, 51(31):10364-10373
[20]杨明明, 刘永卓, 贾伟华, 等.载氧体制备及煤化学链燃烧性能研究[J].燃料化学学报, 2015, 43(2):167-176
[21]张思文, 沈来宏, 肖军, 等.基于碱金属和过渡金属修饰铁矿石载氧体的煤催化燃烧[J].燃料化学学报, 2012, 40(10):1179-1187

煤焦化学链气化过程中神木煤灰对铁基载氧体反应特性及结构的影响

Influence of Shenmu Coal Ash on the Reaction Characteristics and Structure of Fe-based Oxygen Carrier in Coal Char Chemical Looping Gasification

PDF

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

[1]	王义源马淑花王晓辉欧彦君高利珍. 高铝粉煤灰负载锰基催化剂的催化氧化NO性能研究[J]. 过程工程学报, 2022, 22(9): 1262-1270.
[2]	白浩隆付亮亮许光文白丁荣. 典型尺寸燃煤颗粒富氧燃烧特性及燃烧本征动力学研究[J]. 过程工程学报, 2022, 22(8): 1115-1123.
[3]	张炜刘文津张玉明李家州岳君容. 高温加压微型流化床内脉冲气射流扰动的数值模拟[J]. 过程工程学报, 2022, 22(7): 944-953.
[4]	董少文马淑花初茉王晓辉王月娇刘晨旭韩凤兰. 粉煤灰基土壤调理剂作用下盐碱土壤微观结构变化规律[J]. 过程工程学报, 2022, 22(3): 357-365.
[5]	李明哲马淑花王建兵王晓辉姚同宇刘晨旭. 改性粉煤灰对沙土物理特性改良效果研究[J]. 过程工程学报, 2022, 22(2): 204-213.
[6]	范川林杜占潘锋邹正李军李洪钟朱庆山. 过程工程所流化床直接还原技术研究进展[J]. 过程工程学报, 2022, 22(10): 1325-1332.
[7]	杨建林赵璐马淑花王晓辉王月娇. 莫来石-刚玉催化剂载体制备及其性能研究[J]. 过程工程学报, 2022, 22(1): 79-88.
[8]	洪坤曹曼倩王文轩高亚男. 甲醇制烯烃流化床内流化特性的多尺度CFD模拟[J]. 过程工程学报, 2021, 21(9): 1012-1022.
[9]	魏汝飞朱玉龙周笛王毅璠龙红明. 铁矿烧结烟气半干法脱硫灰除杂及水热非均相低温快速氧化[J]. 过程工程学报, 2021, 21(8): 951-958.
[10]	付爽王东祥俞建峰金海安. 喷动流化床最大喷动压降的多因素影响与关联[J]. 过程工程学报, 2021, 21(8): 918-925.
[11]	史亚琪李彦君杜玉朋任万忠. 气-固微型流化床压降特性及最小流化速度的实验研究[J]. 过程工程学报, 2021, 21(4): 420-430.
[12]	张增绪王永昌喻寅刘晓星 . 部分烧结陶瓷材料力学特性的DEM模拟[J]. 过程工程学报, 2021, 21(3): 341-352.
[13]	刘剑黄依倪陈曦易正戟. 甲基橙在Fe⁰-NaA-SSFSF固定床上的催化湿式H₂O₂氧化[J]. 过程工程学报, 2021, 21(2): 193-201.
[14]	王珍珍黄依娜吴玉程罗来马. Fe-(9~11)Cr-Y₂O₃作为ITER结构材料的制备与表征[J]. 过程工程学报, 2021, 21(10): 1207-1215.
[15]	王新东侯长江田京雷. 钢铁行业烟气多污染物协同控制技术应用实践[J]. 过程工程学报, 2020, 20(9): 997-1007.