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1)  denitration efficiency
脱硝效率
1.
By the deeply analysis of main factors influencing on the denitration efficiency and ,particularly,of the parameters of the catalyst,the design optimization and operation optimization for denitration system catalyst reactor,maintenance overhaul and soot blowing control were researched,and their influence on catalyst service life were discussed too.
通过对脱硝效率主要影响因素,尤其是催化剂有关参数的深入分析,从脱销系统催化剂反应器设计优化、运行优化、维修检查以及吹灰控制对延长催化剂使用寿命等方面进行了探讨,为其他电厂脱销系统运行、降低脱硝系统维护和运行成本提供参考。
2.
With the increasing of the mixing time,above 950 ℃,the denitration efficiency of SNCR process decreases,and the temperature window of SNCR becomes narrow.
模拟与实验结果比较表明:Zwietering反应器模型可以较好地描述携带流反应器中心射流和环形射流的混合过程;温度低于900℃时,化学反应速率较低,SNCR反应主要受反应动力学因素控制,混合过程对SNCR反应影响较小;温度高于950℃时,化学反应速率增加,混合过程对SNCR反应的制约明显;混合特征时间的增加,高于950℃时SNCR反应脱硝效率降低,SNCR反应温度窗口变窄。
2)  denitrification efficiency
脱硝效率
1.
Under prerequisite condition of ensuring the escape rate of ammonia,the denitrification efficiency can reach the designed value.
通过在弯头处增加弧形导流板,调整喷氨阀门开度,在SCR反应器出口段加装了4个垂直的导流板后,优化了SCR脱硝反应器中的烟气流速和氨浓度分布,在保证氨逃逸率的前提条件下,使脱硝效率达到设计值;通过模拟对烟道及反应器进行优化,大大降低了烟气对催化剂的冲刷,消除了烟道及反应器的飞灰沉积。
2.
By using a self-prepared "oxygen-enriched type" highly active absorbent,the influence of CO2 and O2 in flue gas on the desulfurization and denitrification efficiency of the highly active absorbent and the influence of the coexistence of SO2 and NOx on the desulfurization efficiency were experimentally studied at an optimum technological condition and through the use of a fixed bed.
采用自行制备的"富氧型"高活性吸收剂,在最佳工艺条件下,通过固定床实验研究了烟气中CO2、O2对高活性吸收剂脱硫脱硝效率的影响和SO2、NOx共存时对彼此脱除效率的影响。
3.
8% denitrification efficiency can be reached when the urea concentration is 5%,gas velocity 0.
在试验中采用两级串连的填料塔为主体反应器,考察了吸收剂浓度(尿素/石灰)、空塔气速、吸收反应温度、pH值及添加剂KMnO4对脱硝效率的影响。
3)  NO removal efficiency
脱硝效率
1.
NO removal efficiency increases quickly with enhancement of molar ratio of gas to NO at 1 050 ℃ and 1 150 ℃,but it increases in the beginning and then decreases at 1 200 ℃ when the reburn fuel is natural gas.
实验燃料先进再燃脱硝时均存在最佳过量空气系数、最佳NH3/NO摩尔比;1 050,1 150℃时脱硝效率随再燃气/NO摩尔比增加而提高,而1 200℃时脱硝效率随天然气/NO比增加先升高后降低,实验最佳天然气/NO比为3。
2.
Results of the experiments show that the NO removal efficiency increases quickly with enhancement of molar ratio of natural gas to NO and the reburn temperature; there exists an optimum reburn stoichiometric ration (0.
对天然气再燃还原NO的关键影响因素进行了系统实验研究,发现脱硝效率随着天然气/NO摩尔比以及温度的增加而提高;再燃区存在最佳过量空气系数,α在0。
4)  Efficiency of removing SO_2 and NO
脱硫脱硝效率
5)  NO removal efficiency
脱硝率
1.
Na2CO3 can enhance NO removal efficiency of SNCR at all of the experimental temperature.
结果表明:碳酸钠随氨水、尿素喷入炉膛,提高了全部实验温度下SNCR的脱硝率,喷入炉膛的碳酸钠最佳质量浓度为950 mg/m3;900℃时,实验选用的5种钠物质均能一定程度提高SNCR的脱硝效率,其促进能力以乙酸钠、甲酸钠、氢氧化钠、碳酸钠、氯化钠的顺序降低;800~900℃时,乙醇、丙三醇、乙酸甲酯均明显提高了SNCR的脱硝率,但在1 000℃时又不同程度降低了NO最高还原率;加入天然气改变了SNCR脱硝反应的温度特性,拓宽了反应温度窗口,并且几乎没有影响最佳脱硝效率,通入的天然气量越大脱硝率越高,但考虑到天然气的燃尽,建议天然气/NO物质的量比取1。
2.
Experimental studies were performed on influences of NO removal efficiency by fuel type,excess air ratio(SR),resident time,and reburning fuel fraction.
采用恒温沉降炉研究了秸秆、稻壳2种生物质及一种煤粉作为再燃燃料的NO还原特性,针对燃料种类、过量空气系数、停留时间及再燃比例4个因素的改变对脱硝率的影响进行了实验研究,同时对3种燃料的再燃燃尽特性进行了分析。
6)  nitrification efficiency
硝化效率
1.
The influence of nitrification efficiency with adding nitrifying bacteria to the activated sludge process was investigation.
研究了在活性污泥工艺中用投加硝化菌的方法提高硝化效率的特性 。
补充资料:脱硝
分子式:
CAS号:

性质:去除或取代化合物中硝酸根的过程。常见的脱硝方法有热分解、还原分解和电解等。用加热方法使硝酸盐分解的方法称为热分解脱硝。工业中常用的有流化床脱硝和微级脱硝。用化学还原剂也可以使硝酸盐溶液脱硝,如甲醛脱硝、甲酸脱硝、蔗糖脱硝等。在泛燃料后处理中蒸浓硝酸溶液时常用甲酸脱硝。电解脱硝也可用于核工业。

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