基于双级燃料反应器的污泥化学链燃烧特性

doi:10.16085/j.issn.1000-6613.2017-1861

化工进展 ›› 2018, Vol. 37 ›› Issue (07): 2830-2836.DOI: 10.16085/j.issn.1000-6613.2017-1861

基于双级燃料反应器的污泥化学链燃烧特性

吴健, 沈来宏, 蒋守席, 闫景春, 沈天绪

东南大学能源与环境学院, 能源热转换及其过程测控教育部重点实验室, 江苏南京 210096

收稿日期:2017-09-05 修回日期:2017-10-23 出版日期:2018-07-05 发布日期:2018-07-05
通讯作者: 沈来宏,博士生导师。
作者简介:吴健(1992-),男,硕士研究生。
基金资助:
国家自然科学基金（51561125001，51476029，51406035）及博士后创新人才支持计划（BX201700049）项目。

Chemical looping combustion of sewage sludge based on two-stage fuel reactor

WU Jian, SHEN Laihong, JIANG Shouxi, YAN Jingchun, SHEN Tianxu

Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, Jiangsu, China

Received:2017-09-05 Revised:2017-10-23 Online:2018-07-05 Published:2018-07-05

摘要/Abstract

摘要： 化学链燃烧技术是一种可以实现CO₂内分离的新型燃烧技术。本文利用基于双级燃料反应器的新型化学链燃烧反应系统，以赤铁矿为载氧体，对污泥的化学链燃烧进行实验研究，系统连续稳定运行8h，考察燃料反应器温度（800～900℃）、污泥进料量（300～600g/h）对污泥化学链燃烧性能的影响。结果表明，稳定运行过程中，床料大部分位于一级燃料反应器，下降管高度保持稳定；双级燃料反应器的设计极大提高了污泥碳转化率，随温度的增加，碳转化率和碳捕集效率逐渐升高，且额外耗氧量始终低于10%；随着污泥进料量增加，碳转化率和CO₂体积分数逐渐降低。对两级燃料反应器内载氧体进行XRD分析，结果显示，还原后的载氧体在空气反应器再生后进入二级燃料反应器，和一级燃料反应器相比，具有更多的Fe₂O₃成分，保证其具有更高的反应活性。

关键词: 双级燃料反应器, 化学链燃烧, 污泥, 流化床, CO₂捕集, 废物处理

Abstract: Chemical-looping combustion (CLC) is a promising technology with inherent CO₂ separation. A novel configuration with a two-stage fuel reactor for CLC was proposed in this paper. Hot experiments were performed with hematite as oxygen carrier and sewage sludge as fuel in this CLC unit. The total continuous operation time was more than 8 hours under stable condition. The effects of fuel reactor temperature (800-900℃) and fuel feed rate (300-600g/h) on chemical looping combustion of sewage sludge were investigated. The results showed that FR-S1 had a larger oxygen carrier inventory and the pressure fluctuation in the downcomer was extremely stable during the steady operation period. The design of two-stage fuel reactor was beneficial to improve the carbon conversion efficiency of the whole system. There was an increase in the carbon conversion efficiency and carbon capture efficiency with the rise of fuel reactor temperature. Oxygen demand was always less than 10%. Higher sewage sludge feed rate resulted in the decrease of carbon conversion efficiency and lower fraction of CO₂. XRD analysis of oxygen carrier extracted from the both fuel reactors showed that oxygen carrier in FR-S2 had more Fe₂O₃ compared with that in FR-S1 and thus led to higher reactivity.

Key words: two-stage fuel reactor, chemical looping combustion, sewage sludge, fluidized-bed, CO₂ capture, waste treatment

中图分类号:

吴健, 沈来宏, 蒋守席, 闫景春, 沈天绪. 基于双级燃料反应器的污泥化学链燃烧特性[J]. 化工进展, 2018, 37(07): 2830-2836.

WU Jian, SHEN Laihong, JIANG Shouxi, YAN Jingchun, SHEN Tianxu. Chemical looping combustion of sewage sludge based on two-stage fuel reactor[J]. Chemical Industry and Engineering Progress, 2018, 37(07): 2830-2836.

参考文献

[1] RICHTER H J, KNOCHE K F. Reversibility of combustion processes[J]. ACS Symposium Series, 1983, 235:71-85.
[2] 金红光, 王宝群. 化学能梯级利用机理探讨[J]. 工程热物理学报, 2004, 25(2):181-184. JIN H G, WANG B Q. Principle of cascading utilization of chemical energy[J]. Journal of Engineering Thermophysics, 2004, 25(2):181-184.
[3] LYNGFELT A, THUNMAN H. Construction and 100h of operational experience of a 10kW chemical-looping combustor[M]. Carbon dioxide capture for storage in deep geologic formations-Results from the CO₂ capture project, 2005:625-645. DOI:10.1016/B978-008044570-0/50122-7.
[4] WANG S Z, WANG G X, JIANG F, et al. Chemical looping combustion of coke oven gas by using Fe₂O₃/CuO with MgAl₂O₃ oxygen carrier[J]. Energy and Environment Science, 2010, 3:1353-1360.
[5] KOLBITSCH P, PRÖLL T, BOLHAR-NORDENKAMPF J, et al. Operating experience with chemical looping combustion in a 120kW dual circulating fluidized bed (DCFB) unit[J]. International Journal of Greenhouse Gas Control, 2010, 4(2):180-185.
[6] RYU H, JO S, PARK Y, et al. Long term operation experience in a 50 kWth chemical looping combustor using natural gas as fuel[C]//Proc. 1st Int. Conf. on Chemical looping. Lyon, France, 2010.
[7] BISCHI A, LANGØRGEN Ø, SAANUM I, et al. Design study of a 150kWth double loop circulating fluidized bed reactor system for chemical looping combustion with focus on industrial applicability and pressurization[J]. International Journal of Greenhouse Gas Control, 2011, 5(3):467-474.
[8] SHEN L H, WU J H, XIAO J, et al. Chemical-looping combustion of biomass in a 10kWth reactor with iron oxide as an oxygen carrier[J]. Energy and Fuels, 2009, 23:2498-2505.
[9] 张思文,沈来宏,顾海明,等. 钠修饰铁矿石载氧体的串行流化床煤化学链燃烧实验[J]. 化工学报, 2013, 64(11):4187-4195 ZHANG S W, SHEN L H, GU H M, et al. Chemical looping combustion of coal in interconnected fluidized bed using Na-loaded iron ore as oxygen carrier[J]. CIESC Journal, 2013, 64(11):4187-4195.
[10] 张思文,吴家桦,顾海明,等. 串行流化床内气体串混特性[J]. 化工学报, 2012, 63(7):2017-2024. ZHANG S W, WU J H, GU H M, et al. Gas leakage properties of chemical looping combustion in interconnected fluidized bed[J]. CIESC Journal, 2012, 63(7):2017-2024.
[11] MARKSTRÖM P, LINDERHOLM C, LYNGFELT A, et al. Chemical-looping combustion of solid fuels-Design and operation of a 100kW unit with bituminous coal[J]. International Journal of Greenhouse Gas Control, 2013, 15:150-162.
[12] MARKSTRÖM P, LYNGFELT A, et al. Designing and operating a cold-flow model of a 100kW chemical-looping combustor[J]. Power Technology, 2012, 222:182-192.
[13] THON A, KRAMP M, HARTGE E U, et al. Operational experience with a system of coupled fluidized beds for chemical looping combustion of solid fuels using ilmenite as oxygen carrier[J]. Applied Energy, 2014, 118:309-317.
[14] WERTHER J, OGADA T. Sewage sludge combustion[J]. Progress in Energy and Combustion Science, 1999, 25(1):55-116.
[15] SONG T, SHEN L H, XIAO J, et al. Nitrogen transfer of fuel-N in chemical looping combustion[J]. Combust Flame, 2012, 159(3):1286-1295.
[16] 牛欣,沈来宏,蒋守席,等. 基于赤铁矿载氧体的污泥化学链燃烧研究[J]. 工程热物理学报, 2015, 36(8):1830-1834. NIU X, SHEN L H, JIANG S X, et al. Chemical looping combustion of sewage sludge based on hematite[J]. Journal of Engineering Thermophysics, 2015, 36(8):1830-1834.
[17] NIU X, SHEN L H, GU H M, et al. Characteristics of hematite and fly ash during chemical looping combustion of sewage sludge[J]. Chemical Engineering Journal, 2015, 268:236-244.
[18] 闫景春,沈来宏. 基于燃料氧化分级的化学链燃烧冷态实验研究[J]. 工程热物理学报, 2016, 38(3):665-671. YAN J C, SHEN L H. Experimental study on the cold model of the chemical-looping combustor based on step oxidation of fuel[J]. Journal of Engineering Thermophysics, 2016, 38(3):665-671.
[19] 顾海明,沈来宏,吴家桦,等. 基于赤铁矿载氧体的煤化学链燃烧实验[J]. 化工学报, 2011, 62(1):179-185. GU H M, SHEN L H, WU J H, et al. Experiments on chemical looping combustion of coal with hematite as oxygen carrier[J]. CIESC Journal, 2011, 62(1):179-185.
[20] SONG T, SHEN T X, SHEN L H, et al. Evaluation of hematite oxygen carrier in chemical-looping combustion of coal[J]. Fuel, 2013, 104:244-252
[21] MA J C, ZHAO H B, TIAN X, et al. Chemical looping combustion of coal in a 5 kWth interconnected fluidized bed reactor using hematite as oxygen carrier[J]. Applied Energy, 2015, 150:304-313.
[22] JIANG S X, SHEN L H, NIU X, et al. Chemical looping co-combustion of sewage sludge and Zhundong coal with natural hematite as the oxygen carrier[J]. Energy & Fuels, 2016, 30(3):1720-1729.

基于双级燃料反应器的污泥化学链燃烧特性

Chemical looping combustion of sewage sludge based on two-stage fuel reactor

PDF (PC)

可视化

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

本文评价

[1]	陈崇明, 陈秋, 宫云茜, 车凯, 郁金星, 孙楠楠. 分子筛基CO₂吸附剂研究进展[J]. 化工进展, 2023, 42(S1): 411-419.
[2]	邵博识, 谭宏博. 锯齿波纹板对挥发性有机物低温脱除过程强化模拟分析[J]. 化工进展, 2023, 42(S1): 84-93.
[3]	李志远, 黄亚继, 赵佳琪, 于梦竹, 朱志成, 程好强, 时浩, 王圣. 污泥与聚氯乙烯共热解重金属特性[J]. 化工进展, 2023, 42(9): 4947-4956.
[4]	史天茜, 石永辉, 武新颖, 张益豪, 秦哲, 赵春霞, 路达. Fe²⁺对厌氧氨氧化EGSB反应器运行性能的影响[J]. 化工进展, 2023, 42(9): 5003-5010.
[5]	杨莹, 侯豪杰, 黄瑞, 崔煜, 王兵, 刘健, 鲍卫仁, 常丽萍, 王建成, 韩丽娜. 利用煤焦油中酚类物质Stöber法制备碳纳米球用于CO₂吸附[J]. 化工进展, 2023, 42(9): 5011-5018.
[6]	杨子育, 朱玲, 王文龙, 于超凡, 桑义敏. 阴燃法处理含油污泥的研究及应用进展[J]. 化工进展, 2023, 42(7): 3760-3769.
[7]	王保文, 刘同庆, 张港, 李炜光, 林德顺, 王梦家, 马晶晶. CuFe₂O₄改性脱硫渣氧载体与褐煤的反应特性[J]. 化工进展, 2023, 42(6): 2884-2894.
[8]	陆诗建, 张媛媛, 吴文华, 杨菲, 刘玲, 康国俊, 李清方, 陈宏福, 王宁, 王风, 张娟娟. 百万吨级CO₂捕集项目亚硝胺污染物扩散健康风险评估[J]. 化工进展, 2023, 42(6): 3209-3216.
[9]	王久衡, 荣鼐, 刘开伟, 韩龙, 水滔滔, 吴岩, 穆正勇, 廖徐情, 孟文佳. 水蒸气强化纤维素模板改性钙基吸附剂固碳性能及强度[J]. 化工进展, 2023, 42(6): 3217-3225.
[10]	郑昕, 贾里, 王彦霖, 张靖超, 陈世虎, 乔晓磊, 樊保国. 污泥与煤泥混烧对重金属固留特性的影响[J]. 化工进展, 2023, 42(6): 3233-3241.
[11]	修浩然, 王云刚, 白彦渊, 邹立, 刘阳. 准东煤/市政污泥混燃燃烧特性及灰熔融行为分析[J]. 化工进展, 2023, 42(6): 3242-3252.
[12]	詹咏, 王慧, 韦婷婷, 朱星宇, 王先恺, 陈思思, 董滨. Mn²⁺强化臭氧调理对生物处理工艺的污泥原位减量效果[J]. 化工进展, 2023, 42(6): 3253-3260.
[13]	常占坤, 张弛, 苏冰琴, 张聪政, 王健, 权晓慧. H₂S气态基质对污泥生物沥滤处理效能的影响[J]. 化工进展, 2023, 42(5): 2733-2743.
[14]	杨自强, 李风海, 郭卫杰, 马名杰, 赵薇. 市政污泥热处理过程中磷迁移转化的研究进展[J]. 化工进展, 2023, 42(4): 2081-2090.
[15]	赵佳琪, 黄亚继, 李志远, 丁雪宇, 祁帅杰, 张煜尧, 刘俊, 高嘉炜. 污泥和聚氯乙烯共热解三相产物特性[J]. 化工进展, 2023, 42(4): 2122-2129.