| 在烟道中脱除NOx 并生成HNO3 的方法 |
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| 引用本文： | 白敏菂,冷宏,毛首蕾.在烟道中脱除NOx 并生成HNO3 的方法[J].科学通报,2011,56(26):2244-2249. |
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| 作者姓名： | 白敏菂 冷宏 毛首蕾 |
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| 作者单位： | 大连海事大学环境工程研究所;大连大学环境与化学工程学院;大连博羽环保技术开发有限公司; |
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| 基金项目： | 国家高技术研究发展计划(2008AA06Z317); 国家自然科学基金(50778028,60801010)资助项目 |
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| 摘 要： | 为了解决目前气体电离放电脱硝方法存在的等离子源体积庞大、能耗高、NOx 脱除率低以及需要依靠传统脱硝方法的协同作用等问题, 拟用小流量、高浓度的氧活性粒子O2+, O(1D),O(3P), O3]、引发剂HO2- 分别注入烟道中, 与烟气中水反应生成·OH, 在无吸收剂、催化剂、氧化剂及其他技术协同作用下, 实现了烟道中·OH 快速氧化脱除大烟气量中的微量NOx 并生成HNO3 溶液的整个反应过程, 等离子体反应管道长度为1~8 m. 实验结果表明, 氧活性粒子与NOx 摩尔比值决定了脱除率, 摩尔比选择在2~3 为宜, 此时NOx 脱除率将达到95%左右, 回收酸液中NO3-回收率达到58.1%; NOx 脱除率随着实验气体温度增高而下降; O2 含量增加对脱硝效果有20%左右的影响; H2O含量大于4%时脱硝率处于最高值. 可见本方法不但解决气体电离放电脱硝存在的问题, 同时又为大气污染治理提供一种绿色新方法.
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| 关 键 词： | 氧活性粒子 HO2-引发剂 羟基自由基 NOx 脱除率 摩尔比 |
| 收稿时间： | 2010-11-09 |
A method for NO_x removal and HNO_3 production in a flue |
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| BAI MinDi,LENG Hong, & MAO ShouLei Environmental Engineering Institute,Dalian Maritime University,Dalian ,China,College of Environmental , Chemical Engineering,Dalian University,Dalian ,Dalian Boyu Environmental Technology Corporation.A method for NO_x removal and HNO_3 production in a flue[J].Chinese Science Bulletin,2011,56(26):2244-2249. |
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| Authors: | BAI MinDi LENG Hong & MAO ShouLei Environmental Engineering Institute Dalian Maritime University Dalian China College of Environmental Chemical Engineering Dalian University Dalian Dalian Boyu Environmental Technology Corporation |
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| Institution: | BAI MinDi1,LENG Hong2,3 & MAO ShouLei3 1Environmental Engineering Institute,Dalian Maritime University,Dalian 116026,China,2College of Environmental and Chemical Engineering,Dalian University,Dalian 116622,3Dalian Boyu Environmental Technology Corporation |
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| Abstract: | New methods for denitration that are compatible with traditional methods are required to overcome problems with denitration by gas ionization discharge,including the large size of the plasma source,high energy consumption and low NOx removal.Active oxygen species(e.g.O2+,O(1D),O(3P),O3) and HO2-initiator were injected under low-flow and high-concentration conditions into a flue to react with the H2O molecules in the flue gas to generate.OH radicals,which can oxidize NOx and generate HNO3 liquid as a resourc... |
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| Keywords: | active oxygen species HO2- initiator OH radicals NOx removal efficiency molar ratio |
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