二次风

蒸汽二次风在UG35/39-M电站锅炉中的试用

Try to Use the Second Wind with Steam in Boiler UG35 / 39-M

此外，在原有系统结构的基础上，增加了烟道含氧量检测，根据烟道含氧量来控制二次风机以达到最佳空燃比。

Moreover , oxygen detector is suggested to the system structure , which can control the second wind pump to control the ratio of wind and fuel .

二次风罩降低燃具NOX的研究

Study of the secondary air shad for reducing no_x of cookers

鞍钢KM回转窑主传动、二次风机备整机方案

Preparation Program of Complete set of Main Drive and Secondary Fan for KM Rotary Kiln in AISC

W型火焰锅炉二次风改造对燃烧影响的试验研究

Experimental Study of the Influence of the Secondary Air Modification of a " W " Type Flame Boiler on Combustion

二次风的通入，过量空气系数保持在1.1都能降低NOx的产生。

Both to add secondary air and to keep excess air ratio 1.1 can decrease NOx generation .

二次风比例增加，H2S浓度降低，SO2浓度增大。

Increasing ratio of primary air to secondary air , concentration of H2S decreased , and concentration of SO2 increased .

试验结果表明：这种燃烧器通过合理调整内、外二次风挡板开度，可实现低NOX燃烧。

The testing results showed that this burners , through adjusting the baffle openings of inner and outer secondary air , could achieve low Nox combustion .

借助Fluent流体仿真软件，对不同炉拱结构时炉膛内空气动力场进行模拟，模拟过程中考虑到了二次风的影响。

Fluid simulation software Fluent is used to simulate the air flow fields in the furnace of different pre-arch structures . Secondary air is considered in the simulation .

600MW偏转二次风系统锅炉炉内结渣特性的数值模拟

Simulation of Slagging Prevention Property of the Furnace with Deviated Secondary Air System

分级燃烧的二次风率增至15%，NOx排放降低14%、N2O降低24%。

Emission of NOx is reduced by 14 % and that of N2O by 24 % if secondary air in staged combustion is increased to 15 % .

300MW单炉膛循环流化床锅炉二次风射程的数值模拟

Numerical Simulation of Secondary Air Penetration Depth in a 300 MW Single-furnace Circulating Fluidized Bed Boiler

并研究了床温、氧浓度、流化速度、二次风率对Vr（%）、C（%）的影响规律。

Also investigated was the influence on Vr % and C % of such a variety of factors as the bed temperature Tb , oxygen concentration , fluidizing velocity Uo and secondary air feed ratio R2 % .

在工业热态CFB锅炉上测试了过量空气系数和二次风率变化对锅炉飞灰含碳量的影响。

An industrial experiment were conducted to test the influence of excess air coefficient and secondary air ratio on the carbon content of fly ash of CFB boiler burning Fujian anthracite .

200MW机组锅炉二次风在线测量系统研究与应用

Study on measure system on-line of boiler exhaust gas draft for 200 MW unit

本文运用作者所提出的计算机辅助数值试验（CAT）方法，对冷态炉内一次风、二次风两股射流以一定的角度喷射而形成三维交叉射流流场进行了研究。

In this paper , with the help of Computer-Aid-Test ( CAT ) reported by the author , we study the three-dimensional cross flow field generated by the primary wind and the second wind which injet at an angle in the unheated furnace .

在同样的二次风配风方式下，SW随锅炉负荷的降低而增加，再热器的最大热偏差系数随SW增加而增加。

Under the same secondary air distribution mode SW will increase with a reduction in boiler load . The maximum thermal deviation factor of the reheater will increase with an increase in SW value .

该文分别在水平和垂直煤粉浓淡燃烧方式下，进行了一次风速、过量空气系数、锅炉负荷、二次风配风方式以及三次风量等因素对电站锅炉NOx排放影响的试验。

The influence of primary air velocity , excess air coefficient , boiler load , auxiliary air distribution and tertiary air on NO , emission was investigated under both Horizontal Bias Combustion ( HBC ) and Vertical Bias Combustion ( VBC ) .

本文论述了平圩电厂1＃炉烟气中NOx的测定过程.采用了顶部二次风摆动喷嘴方法来降低烟气中的NOx对这一技术措施的实际效果进行了分析研究。

Installed at Pingwei Power Station . A secondary air swinging nozzle has been installed at the boiler top to reduce the NOx content in boiler flue gases . An analytical study on the effectiveness of such a method was also undertaken .

以及各层二次风份额（R2i%）及悬浮空间燃烧区（FCZ）的温度分布与炉内N2O浓度分布的关系。

We also studied the relationship between the N_2O concentration distribution and every layer 's secondary air ratio ( R_ 2i % ) and the temperature distribution in FCZ .

试验表明，NOx生成和径向分布与炉内温度、煤粉细度、给粉量、煤种、二次风温、一二次风比值及过量空气系数等有密切关系。

Experiments show that the amount and the distributing of NOx emanation depend intimately on the furnace temperature , the quantity of coal powder , coal category , the temperature of the secondary air , the ratio of primary air and secondary air , excess air factor etc.

内二次风叶片角度为60°时能形成径向、轴向尺寸较大的回流区，颗粒分布相对均匀，提高燃烧效率、稳定性的同时，有利于抑制NOx的生成。

When the angle of inner secondary air is 60 °, it could form a recirculation region that radial size and axial length of recirculation region is relatively large , and particle distribution relatively uniform . It helps to improve combustion efficiency and stability and suppress NOx formation .

对同心切圆燃烧系统（CFS）中偏转二次风对炉内动力场、结焦、NOx排放等的影响进行了研究和探讨，分析了偏转二次风设计中应注意的问题。

The influence of biased secondary air in concentrically and tangentially firing system upon the air dynamic field in furnace , slagging , and NOx emission etc. has been studied and approached , the problems needing to pay attention during design of biased secondary air being analysed .

采用窄筛分偏粗颗粒入炉煤、提高燃烧过量空气系数和二次风率，增强二次风的扰动穿透能力、提高燃烧温度等运行措施有利于福建无烟煤焦在CFB锅炉中的燃尽。

Test results show that coarser sieved particles with a narrow size range , increased excess air ratio and the secondary air rate , enhanced secondary air 's stirring and penetrating capability and increased combustion temperature all help to raise the burn out rate of Fujian anthracite in CFB boilers .

通过控制二次风以下区段为还原气氛，使己二胺废水中的有机胺转化为NHi，然后它与由硝酸分解产生的NOx反应生成N2，可减少NOx排放量。

By controlling the area under secondary air to be a reduction zone , the organic amine in the waste liquor turns into NHi , which further reacts with NOx decomposed from HNO 3 to form N 2 , leading to the reduction of NO x emission .

试验表明：运行参数包括过量空气系数，煤粉细度，分级燃烧方式下一、二次风配比等对SO2和H2S气体沿炉膛浓度分布有较大的影响。

The results showed that the concentration of SO 2 and H 2S flowing the hearth was affected by the operating parameters including the factor of excess air , the granularity of the pulverized coal and the ratio of the primarily air and the second air in the staged combustion .

利用一种新型的二次风喷口水平摆动的水平浓淡风煤粉燃烧器对一台300MW燃贫煤锅炉进行技术改造，并对影响NOx排放量和飞灰可燃物含量的各种因素进行了现场试验研究。

In situ experimental studies were made on the NOx emission and unburnt carbon loss in a 300 MW lean coal fired boiler , which adopted a new kind of HBC burner with the side secondary air ( HBC-SSA ) and the horizontally offset secondary air nozzles .

通过对某台300MW机组现场试验与计算表明，该方法可以指导运行人员进行二次风开度的优化调整，降低飞灰含碳量，同时也解决了锅炉变工况下运行参数基准值的问题。

By comparing the results of in site experiments with calculation , the rationality of the method to adjust the secondary air distribution mode is proved , and the problem of the operating standard value of boiler parameters also can be solved .

提高床层温度会导致NO排放的而增加，但同时却降低了N20浓度。在高温工况下，空气分级燃烧能够很大程度上的降低NO浓度，但二次风比例存在一个最佳值。

Raise the bed temperature would increase NO emission , but at the same time reduce N2O concentration . In high temperature condition , air-staging combustion is conducive for NO reduction , but there exists an optimized secondary air ratio .

直流式角置燃烧器增设偏转二次风

Addition of Biased Secondary Air for Corner arranged Direct flow Burner