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1)  selective redox
催化选择氧化还原
2)  selective catalytic reduction(SCR)
选择性催化还原
1.
The basic principles of selective catalytic reduction(SCR) reaction are described.
介绍了选择性催化还原(SCR)原理,分析了SCR反应过程中催化剂钝化4种主要原因,总结了目前国内外常用的几种催化剂的失活再生技术,如水洗再生、热再生、热还原再生、酸液处理再生、SO2酸化热再生,同时对酸液处理再生技术进行实验评价。
2.
Sulfated NOx selective catalytic reduction(SCR) catalyst has been paid much attention,due to its enhanced activity and selectivity,and high tolerance towards alkali poisoning.
新型的硫酸化NOx选择性催化还原(SCR)催化剂,由于对催化性能具有良好的促进作用以及强抗碱金属中毒特性等日益受到关注,成为SCR研究的热点。
3.
The technology and mechanism of selective catalytic reduction(SCR) of NOx at low temperature(<200℃) in the presence of oxygen with NH3 as reductant and activated carbon as catalyst were introduced.
介绍了选用NH3作还原剂,活性炭作催化剂,在低温(<200℃)和氧气存在的条件下,选择性催化还原(SCR)NOx的技术和反应机理,研究了氧气浓度、NOx入口浓度和烟气温度对脱NOx率的影响。
3)  selective catalytic reduction
选择催化还原
1.
Research advances in selective catalytic reduction of NO_x with lower hydrocarbon over transitional-metal supported catalysts;
负载过渡金属催化剂上低碳烃选择催化还原氮氧化物的研究进展
2.
Selective Catalytic Reduction of NO_x by Acetylene over Tungsten Based Zeolites Catalyst in Lean-burn Condition;
钨基分子筛催化剂上乙炔选择催化还原NO_x的研究
3.
Study of Novel Mn-based Catalyst for Selective Catalytic Reduction of NO_x at Low-temperature;
新型Mn基低温选择催化还原脱硝催化剂的研制
4)  SCR
选择性催化还原
1.
Synthesis of heat-resistant WO_3-CeO_2-ZrO_2 catalyst and its performance for NH_3-SCR of NO in diesel exhaust;
耐高温WO_3-CeO_2-ZrO_2催化剂的合成及其在柴油车尾气氨-选择性催化还原一氧化氮中的应用
2.
Study on Optimizing SCR System for Large Capacity Utility Boilers;
大型电站锅炉烟气脱硝选择性催化还原系统优化研究
3.
Modeling and Optimization of Urea-SCR Exhaust Aftertreatment Systems
尿素选择性催化还原系统的仿真与优化
5)  selective catalytic reduction
选择性催化还原
1.
Analysis and Evaluation on Three Different Configuration of Selective Catalytic Reduction Denitrification Process;
选择性催化还原脱硝工艺的布置方式及分析
2.
Mathematic model of selective catalytic reduction of NO with NH_3 in experiment-scale reactor;
NH_3选择性催化还原NO数学模型
3.
Investigation into selective catalytic reduction(SCR) of NO_x;
选择性催化还原(SCR)脱除NO_x的实验研究
6)  selective catalytic reduction (SCR)
选择性催化还原
1.
The study on the selective catalytic reduction (SCR) of NO using hydrocarbons as reductants has attracted extensive attention in the past decade.
介绍了烃类 ,尤其是低碳烃选择性催化还原一氧化氮的研究现状及反应机理。
2.
Catalyst is the key part of selective catalytic reduction (SCR) deNO_X process of flue gas and thepreparation technology of catalyst affects the deNO_X effect.
结合实验研究、分子模拟和数值计算,针对目前燃煤烟气脱硝的选择性催化还原脱硝催化剂的制备及其脱硝机理进行了研究,开发了该技术脱硝所需的一系列关键技术设备,并应用于某燃煤机组烟气脱硝工程。
3.
The selective catalytic reduction (SCR) of NOx by ethanol over Ag/Al2O3 catalyst has been considered as most potential HC-SCR technology.
以Ag/Al2O3作为催化剂、乙醇为还原剂的选择性催化还原技术被认为是最具潜力的HC-SCR技术。
补充资料:催化还原法除氮氧化物
分子式:
CAS号:

性质:催化还原法可依还原剂是否与废气中的氧发生反应,分为非选择性催化还原法和选择性催化还原法。前者的还原剂是氢气、甲烷、一氧化碳及低碳氢化合物,还可利用含以上组分的混合气体(如合成氨弛放气、焦炉气、天然气、炼厂尾气和气化石脑油等)。在铂、钯催化剂的作用下,可将废气中的氮氧化物(NOx)催化还原为氮气。同时还原剂还可与废气中的氧作用,生成水蒸气和二氧化碳,反应过程放出大量的热。由于该法燃料耗量大,采用贵重金属为催化剂,需设置热回收装置,投资费用较大,而逐渐被淘汰。目前,大多采用选择性催化还原法,它以氨为还原剂,对含氮氧化物的气体进行催化还原处理,氨能有选择地与气体中的二氧化氮及一氧化氮反应,而极少与气体中的氧反应。催化剂可用贵金属,也可用其他金属(铜、铁、铬、锰等)。此法需要消耗一定量的氨,运转费用较高,经济上不够合理,而且处理尾气中氨的浓度达500~800mg/L,会造成二次污染。

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