高级搜索

O2/CO2燃烧烟气成分对再生催化剂脱硝效果的影响

,  ,  ,  ,  ,  , 

downloadPDF

上一篇

下一篇

高正阳, 范军辉, 陈元金, 梁冉冉, 孙立巍, 丁艺, 廖永进. O2/CO2燃烧烟气成分对再生催化剂脱硝效果的影响[J]. 环境工程学报, 2017, 11(6): 3715-3721. doi: 10.12030/j.cjee.201609032
引用本文: 高正阳, 范军辉, 陈元金, 梁冉冉, 孙立巍, 丁艺, 廖永进. O2/CO2燃烧烟气成分对再生催化剂脱硝效果的影响[J]. 环境工程学报, 2017, 11(6): 3715-3721. doi: 10.12030/j.cjee.201609032
shu
GAO Zhengyang, FAN Junhui, CHEN Yuanjin, LIANG Ranran, SUN Liwei, DING Yi, LIAO Yongjin. Effect of simulated flue gas of O2/CO2 combustion on regeneration catalyst[J]. Chinese Journal of Environmental Engineering, 2017, 11(6): 3715-3721. doi: 10.12030/j.cjee.201609032
Citation: GAO Zhengyang, FAN Junhui, CHEN Yuanjin, LIANG Ranran, SUN Liwei, DING Yi, LIAO Yongjin. Effect of simulated flue gas of O2/CO2 combustion on regeneration catalyst[J]. Chinese Journal of Environmental Engineering, 2017, 11(6): 3715-3721. doi: 10.12030/j.cjee.201609032
shu

O2/CO2燃烧烟气成分对再生催化剂脱硝效果的影响

  • 1.

    华北电力大学能源动力与机械工程学院, 保定 071003

  • 2.

    广东电网有限责任公司电力科学研究院, 广州 510080

  • 基金项目:

    南方电网科研项目（K-GD2014-173）

  • 中图分类号: X701

Effect of simulated flue gas of O2/CO2 combustion on regeneration catalyst

  • 1.

    School of Energy and Power Engineering, North China Electric Power University, Baoding 071003, China

  • 2.

    Guangdong Power Grid Co. Ltd., Electric Power Research Institute, Guangzhou 510080, China

  • Fund Project:

摘要

  • 摘要: 由于富氧燃烧（O2/CO2）烟气中高浓度的CO2会对再生后催化剂脱硝性能产生影响，以某电厂空气燃烧下失活的SCR脱硝催化剂为实验样品，分别采用去离子水、0.5 mol·L-1 H2SO4以及0.1 mol·L-1 NH4Cl等再生液浸渍法对其进行再生，然后模拟O2/CO2燃烧下的烟气成分作为实验气体，在活性测试平台上对再生前后催化剂性能进行评估，与空气燃烧烟气下进行对比，并利用BET、X射线光谱（XRF）、ICP-MS和离子色谱（IC）以及热重（TG）等测试手段对催化剂进行表征。结果表明：失活样品经水、H2SO4和NH4Cl溶液浸渍后可除去中毒元素并恢复其比表面积，在模拟燃烧烟气下对应的活性均有所恢复但效果不一，其中H2SO4和NH4Cl再生效果明显好于水洗，且H2SO4和NH4Cl洗后的样品在O2/CO2燃烧烟气下再生效果好于空气下，而水洗后的样品在空气燃烧烟气下更好；经XRF分析表明催化剂表面的活性组分V2O5在水中溶解比较微弱，但在H2SO4和NH4Cl中溶解性较大。
    Abstract: CO2 with high concentration in oxygen enriched combustion(O2/CO2) flue gas affects the denitrification performance of regenerated catalyst. Inactivated SCR denitrification catalyst under air burning condition in one power plant was taken as the experiment sample, soaked respectively in deionized water, 0.5 mol·L-1 H2SO4 solution and 0.1 mol·L-1 NH4Cl solution to be regenerated. Flue gas composition under O2/CO2 combustion condition was simulated as the experiment gas. Catalyst performance before and after regeneration was evaluated on the activity test platform and then compared with that under air burning condition. BET, XRF, ICP-MS, IC and TG techniques were applied to characterize the catalyst. The result shows that after soaking in deionized water, H2SO4 solution and NH4Cl solution, inactivated sample is capable of removing poisoned element and recovering the specific area. In the simulated flue gas, catalyst activities are recovered in a different degree, where the regeneration performance of H2SO4 and NH4Cl solution is distinctly better than that of water. After H2SO4 and NH4Cl solution washing, catalyst regeneration effect under O2/CO2 combustion condition is better than that under air burning condition, while water washing contributes to an opposite result. XRF analysis indicates that V2O5, the active component on catalyst surface, hardly dissolves in water but the solubility in H2SO4 and NH4Cl solution is relatively considerable.
  • [1] Chen L, Yong S Z, Ghoniem A F. Oxy-fuel combustion of pulverized coal:Characterization, fundamentals, stabilization and CFD modeling[J]. Progress in Energy & Combustion Science, 2012, 38(2):156-214
    [2] 郑楚光,赵永椿,郭欣. 中国富氧燃烧技术研发进展[J].中国电机工程学报,2014,34(23):3856-3864
    [3] 王岩. 富氧燃烧技术应用关键问题探讨[J].理论研究,2014(5):90-92
    [4] IKEDA M, TOPOROV D, CHRIST D, et al. Trends in NOx Emission during Pulverized Fule Oxy-fule combustion[J]. Energy & Fuels, 2012, 26(6):3141-3149
    [5] 陈松涛, 黄晓宏, 柳朝晖,等. 富氧燃烧条件下SCR催化剂活性实验研究[C]. 上海:中国动力工程学会. 2014火电厂污染物净化与节能技术研讨会论文集, 2014:165-171
    [6] 廖永进, 陆继东, 黄秋雄,等. 选择性催化还原服役后催化剂活性及动力学实验研究[J]. 中国电机工程学报, 2013, 33(17):37-44
    [7] 顾卫荣, 周明吉, 马薇. 燃煤烟气脱硝技术的研究进展[J]. 化工进展, 2012, 31(9):2084-2092
    [8] 刘晓霞, 屈睿. 国外SCR催化剂研究进展[J]. 广东化工, 2008, 35(11):65-68
    [9] 周俊强, 杨晓伟, 陶韡,等. SCR脱硝催化剂再生实验研究及评价分析[J]. 华北电力技术, 2013(8):6-11
    [10] KHODAYARI R, ODENBRAND C U I. Regeneration of commercial SCR catalysts by washing and sulphation:Effect of sulphate groups on the activity[J]. Applied Catalysis B Environmental, 2001, 33(4):277-291
    [11] 崔力文, 宋浩, 吴卫红,等. 电站失活SCR催化剂再生试验研究[J]. 能源工程, 2012(3):43-46
    [12] 高凤雨, 唐晓龙, 易红宏,等. 商用SCR催化剂的钠中毒及再生[J]. 中南大学学报(自然科学版),2015,46(6):2382-2390
    [13] 喻小伟, 周瑜, 刘帅,等. SCR脱硝催化剂失活原因分析及再生处理[J]. 热力发电, 2014, 43(2):109-113
    [14] 盘思伟, 程华, 韦正乐,等. 钒钛基SCR催化剂K中毒酸洗再生研究[J]. 热力发电, 2014(7):104-109
    [15] BRANDIN J G M, HULTEBERG C P, ODENBRAND C U I. High-temperature and high-concentration SCR of NO with NH3:Application in a CCS process for removal of carbon dioxide[J]. Chemical Engineering Journal, 2012, 191(19):218-227
    [16] 王补宣. 工程传热传质学(下册)[M]. 第1版. 北京:科学出版社,2002:401-405
    [17] 沈伯雄, 施建伟, 杨婷婷,等. 选择性催化还原脱氮催化剂的再生及其应用评述[J]. 化工进展, 2008, 27(1):64-67
    [18] 张发捷,张强,程广文,等. SCR脱硝催化剂再生技术试验研究[J]. 热力发电,2015,44(3):34-41
    [19] LONG R Q, YANG R T. Selective catalytic oxidation of ammonia to nitrogen over Fe2O3-TiO2 prepared with a sol-gel method[J]. Journal of Catalysis, 2002, 207(2):158-165
    [20] ZHU Z, LIU Z, LIU S, et al. A novel carbon-supported vanadium oxide catalyst for NO reduction with NH3, at low temperatures[J]. Applied Catalysis B Environmental, 1999, 23(4):L229-L233
    [21] 刘清雅,刘振宇,李成岳. NH3在选择性催化还原NO过程中的吸附与活化[J]. 催化剂学报,2006,27(7):636-646
    [22] 谭月, 杨柳, 单云霞,等. SCR催化剂失活机理与再生技术的研究综述[J]. 电力科技与环保, 2014, 30(6):16-18
    [23] GAO X, DU X, FU Y, et al. Theoretical and experimental study on the deactivation of V2O5 based catalyst by lead for selective catalytic reduction of nitric oxides[J]. Catalysis Today, 2011, 175(1):625-630
    [24] ZHU C, TIAN H, CHENG K, et al. Potentials of whole process control of heavy metals emissions from coal-fired power plants in China[J]. Journal of Cleaner Production, 2016,114:343-351
    [25] LEE J, EOM Y, KIM J, et al. Regeneration of waste SCR catalyst by air lift loop reactor[J]. Journal of Central South University, 2013, 20(5):1314-1318
    [26] LI X, LI J, PENG Y, et al. Regeneration of commercial SCR catalysts:Probing the existing forms of arsenic oxide[J]. Environmental Science & Technology, 2015, 49(16):9971-9978
    [27] 罗红成,黄碧纯,付名利,等.MnOx/MWCNTs低温氨选择性催化还原NOx 硫中毒机理[J].物理化学学报,2012,28(9):2175-2182
  • 加载中
WeChat 点击查看大图
计量
  • 文章访问数:  1995
  • HTML全文浏览数:  1658
  • PDF下载数:  396
  • 施引文献:  0
出版历程
  • 收稿日期:  2016-10-14
  • 刊出日期:  2017-06-23
高正阳, 范军辉, 陈元金, 梁冉冉, 孙立巍, 丁艺, 廖永进. O2/CO2燃烧烟气成分对再生催化剂脱硝效果的影响[J]. 环境工程学报, 2017, 11(6): 3715-3721. doi: 10.12030/j.cjee.201609032
引用本文: 高正阳, 范军辉, 陈元金, 梁冉冉, 孙立巍, 丁艺, 廖永进. O2/CO2燃烧烟气成分对再生催化剂脱硝效果的影响[J]. 环境工程学报, 2017, 11(6): 3715-3721. doi: 10.12030/j.cjee.201609032
shu
GAO Zhengyang, FAN Junhui, CHEN Yuanjin, LIANG Ranran, SUN Liwei, DING Yi, LIAO Yongjin. Effect of simulated flue gas of O2/CO2 combustion on regeneration catalyst[J]. Chinese Journal of Environmental Engineering, 2017, 11(6): 3715-3721. doi: 10.12030/j.cjee.201609032
Citation: GAO Zhengyang, FAN Junhui, CHEN Yuanjin, LIANG Ranran, SUN Liwei, DING Yi, LIAO Yongjin. Effect of simulated flue gas of O2/CO2 combustion on regeneration catalyst[J]. Chinese Journal of Environmental Engineering, 2017, 11(6): 3715-3721. doi: 10.12030/j.cjee.201609032
shu

O2/CO2燃烧烟气成分对再生催化剂脱硝效果的影响

  • 1. 华北电力大学能源动力与机械工程学院, 保定 071003
  • 2. 广东电网有限责任公司电力科学研究院, 广州 510080
  • 收稿日期:  2016-10-14
基金项目:

南方电网科研项目（K-GD2014-173）

摘要: 由于富氧燃烧（O2/CO2）烟气中高浓度的CO2会对再生后催化剂脱硝性能产生影响，以某电厂空气燃烧下失活的SCR脱硝催化剂为实验样品，分别采用去离子水、0.5 mol·L-1 H2SO4以及0.1 mol·L-1 NH4Cl等再生液浸渍法对其进行再生，然后模拟O2/CO2燃烧下的烟气成分作为实验气体，在活性测试平台上对再生前后催化剂性能进行评估，与空气燃烧烟气下进行对比，并利用BET、X射线光谱（XRF）、ICP-MS和离子色谱（IC）以及热重（TG）等测试手段对催化剂进行表征。结果表明：失活样品经水、H2SO4和NH4Cl溶液浸渍后可除去中毒元素并恢复其比表面积，在模拟燃烧烟气下对应的活性均有所恢复但效果不一，其中H2SO4和NH4Cl再生效果明显好于水洗，且H2SO4和NH4Cl洗后的样品在O2/CO2燃烧烟气下再生效果好于空气下，而水洗后的样品在空气燃烧烟气下更好；经XRF分析表明催化剂表面的活性组分V2O5在水中溶解比较微弱，但在H2SO4和NH4Cl中溶解性较大。

English Abstract

    全文HTML

参考文献 (27)

返回顶部

目录

/

返回文章
返回

Copyright © 2019 中国科学院生态环境研究中心