MgO脱除HCN的动力学研究

王新民; 陈二强; 谭厚章; 王学斌; 司纪朋; 张利孟

MgO脱除HCN的动力学研究

1.
西安交通大学能源与动力工程学院热流科学与工程教育部重点实验室, 陕西西安 710049;
2.
河南电力试验研究院, 河南郑州 450052

基金项目: 国家自然科学基金(50976086)。

详细信息

通讯作者:
王新民(1986),男,陕西宝鸡人,硕士,研究方向为洁净燃烧与污染防治;E-mail:wangxm.86@stu.xjtu.edu.cn。

中图分类号: TK16
计量
- 文章访问数: 1509
- HTML全文浏览量: 20
- PDF下载量: 637
- 被引次数: 0
出版历程
- 收稿日期: 2012-07-31
- 修回日期: 2012-09-23
- 刊出日期: 2013-02-28

Dynamic investigations on the removal of hydrogen cyanide using magnesium oxide

1.
Key Laboratory of Thermo-Fluid Science and Engineering, Ministry of Education,School of Energy and Power Engineering, Xi'an Jiaotong University, Xi’an 710049, China;
2.
Henan Electric Power Research Institute, Zhengzhou 450052, China

摘要

摘要: 研究了MgO在不同温度下对HCN的脱除作用,并用XRD对反应后固相产物进行分析。研究了温度、MgO质量分数、HCN初始体积分数和停留时间等因素对HCN脱除效率的影响,并求出MgO与HCN反应的动力学参数。结果表明,673 K时,MgO已经开始与HCN发生反应,当温度高于873 K时,HCN中气态"N"已转化到固相产物MgCN₂中;HCN脱除效率随温度、MgO质量分数和停留时间的增加呈线性增加,但随HCN初始体积分数增加呈负幂函数的规律下降;MgO与HCN的反应级数α为0.72,表观活化能E为32.2 kJ/mol。
- HCN脱除 /
- MgO /
- 脱除效率
Abstract: The removal of hydrogen cyanide(HCN) using magnesium oxide(MgO)at various temperatures was investigated in the presented paper. The solid products were analysed by X-Ray Diffraction. The effects of temperature, mass fraction of MgO, initial volume fraction of HCN and residence time were discussed. The kinetic parameters of the reaction between HCN and MgO were obtained. Results show that MgO remarkably reacts with HCN through transforming the nitrogen in HCN into the solid product MgCN₂ from 873 K. The removal efficiency of HCN increases with the increase of temperature, mass fraction of MgO and residual time in linear relation; but decreases with the initial volume fraction of HCN in negative power function relationship. The reaction order and apparent activation energy of the reaction between HCN and MgO are 0.72 and 32.2 kJ/mol respectively.
- removal of hydrogen cyanide /
- magnesium oxide /
- removal efficiency

HTML全文

参考文献(14)

肖瑞华, 白金锋. 煤化学产品工艺学[M]. 北京: 冶金工业出版社, 2003. (XIAO Rui-hua, BAI Jin-feng. Technology of coal chemistry product[M]. Beijing: Metallurgical Industry Press, 2003.)

KOVEAL R J, RILEY K L, CORKERN K E. Process for removal of hydrogen cyanide from synthesis gas. 1997, Simon Jay.

张奉民, 李开喜, 吕春祥, 吕永根, 杨永岗, 凌立成. 氰化氢脱除方法[J]. 新型炭材料, 2003, 18(2): 151-157. (ZHANG Feng-min, LI Kai-xi, LÜ Chun-xiang, LÜ Yong-gen, YANG Yong-gang, LIN Li-cheng. Removal methods of hydrogen cyanide[J]. New Carbon Materials, 2003, 18(2): 151-157.)

黎成勇, 李克, 刘建福,秦亮生,银董红. Al₂O₃和TiO₂吸附氢氰酸研究[J]. 烟草科技, 2005, 221(12): 24-26. (LI Cheng-yong, LI Ke, LIU Fu-jian, QIN Liang-sheng, YIN Dong-hong. Adsorption and removal of hydrogen cyanide from cigarette smoke with Al₂O₃ and TiO₂[J]. Tobacco Science & Technology, 2005, 221(12): 24-26.)

SACHFER S, BONN B. Hydrolysis of HCN as an important step in nitrogen oxide formation in fluidised combustion: Part 2 Heterogenous reactions involving limestone[J]. Fuel, 2002, 81(13): 1641-1646.

王聪玲, 谭厚章, 王学斌, 徐通模, 惠世恩. CaO高温脱除氰化氢试验研究[J]. 工程热物理学报, 2009, 30(13): 1977-1979. (WANG Cong-ling, TAN Hou-zhang, WANG Xue-bin, XU Tong-mo, HUI Shi-en. Experimental investigation of the removal of HCN by CaO at high temperature[J].Journal of Engineering Thermophysics, 2009, 30(13): 1977-1979.)

宁平, 蒋明, 王学谦, 杨弘, 师雁, 柏杨巍. 低浓度氰化氢在浸渍活性炭上的吸附净化研究[J]. 高校化学工程学报, 2010, 24(6): 1038-1045. (NING Ping, JIANG Ming, WANG Xue-qian, YANG Hong, SHI Yan, BO Yang-wei. Adsorption of low-concentration HCN on impregnated activated carbon[J]. Journal of Chemical Engineering of Chinese University, 2012, 24(6): 1038-1045.)

MYKOLA S, MARTIN V M, TERESA J B. Effects of surface chemistry on the reactive adsorption of hydrogen cyanide on activated carbons[J]. Carbon, 2009, 47(10): 2456-2465.

TENG H S, SUUBER E M, CALO J M. Studies on the reduction of nitric oxide by carbon: The nitric oxide–carbon gasification reaction[J]. Energy Fuels, 1992, 6(4): 398-406.

LI D, GAO S, SONG W, XU G . Experimental study of NO reduction over biomass char[J]. Fuel Process Technol, 2007, 88(7): 707-715.

LI D, GAO S, XU G. NO reduction over biomass chars in the combustion process[J]. Energy Fuels, 2010, 24(1): 446-450.

GARIJO E G, JENSEN A D, GLARBORG P. Kinetic study of NO reduction over biomass char under dynamic conditions[J]. Energy Fuels, 2003, 17(6): 1429-1436.

JOHNSSON J E. Formation and reduction of nitrogen oxides in fluidized-bed combustion[J]. Fuel, 1994, 73(9): 1398-1415.

RODRIGUEZ M J, OOMS A C, PELS J R KAPTEIJN F, MOULIJN J A. NO and N₂O decomposition over coal char at fluidized-bed combustion conditions[J]. Combust Flame, 1994, 99(3/4): 499-507.

施引文献

资源附件(0)

访问统计