1) Adjustability of pulverized coal concentration
煤粉浓度可调
2) Coal concentration
煤粉浓度
1.
In addition this paper made an exposition of prevent wear of probe by measuring its temperature? coal concentration? wind specd measured? model cutting circuity and statistics input coal to boiler.
介绍了锅炉燃烧优化指导系统的原理、组成、功能及其在火电厂的应用、维护 ;并对温度探头防磨、煤粉浓度、风速测量、模拟切圆及入炉煤量统计等作了阐述。
3) coal powder concentration
煤粉浓度
1.
Considering frictional pressure loss and suspending particles lifting pressure loss in the process of mixture between coal and air,based on gas solid two phases theory,a new method was developed to punctually measure coal powder concentration of air coal mixture by energy balance principle.
基于悬浮式气、固两相流理论 ,考虑了风 -煤合流过程中的压力损失及悬浮颗粒提升压损的影响 ,运用能量法提出了一种测量一次风管中风 -粉混合后煤粉浓度的新方法 ,对水平、垂直段测试的精度进行比较 ,并介绍了一次风管中煤粉浓度在线监测系统的开发过程和方法 。
2.
Considering frictional pressure loss and suspending particles lifting pressure loss in the process of mixture between coal and air, and based on gas-solid two phases theory, a method was developed to punctually measure coal powder concentration of primary air of vertical and horizontal duct in the four corner rounding boiler by energy balance principle.
基于气 -固两相流理论 ,考虑风 -煤合流过程中的压力损失及悬浮颗粒提升压损的影响 ,利用能量法提出了测量四角切圆锅炉一次风管中风 -粉混合后煤粉浓度的方法 ,并介绍了煤粉浓度在线监测系统的开发主要过程、方法和精度。
3.
Based on the theoretical relationship between gas-solid flow s centrifugal force change on outside and inside of bend and gas -solid flowing rate, we have made experimental research about measuring coal powder concentration in pneumatic pipes of boiler s combustion system with bend mehod.
利用气固两相流流过弯管处作用在管壁上的离心力的变化与气固两相流流量之间的理论关系，针对电厂锅炉燃烧系统送粉管道进行了弯管法测量煤粉浓度的试验研究，得出了相应测量送粉管道中煤粉浓度的数学模型，然后对其进行了误差分析，最后提出了在线检测的实现方法和作用。
4) pulverized coal concentration
煤粉浓度
1.
The research of soft measuring technology for pulverized coal concentration in power plant;
火电厂煤粉浓度软测量研究
2.
Research of pulverized coal concentration on-line monitoring system based on dynamic signal process;
基于动态信号处理的煤粉浓度在线测量技术研究
3.
Measuring techniques of primary air pulverized coal concentration in thermal power plants;
火电厂中一次风煤粉浓度测量技术分析
5) pulverized-coal concentration
煤粉浓度
1.
Accurate measurement of pulverized-coal concentration in various flue pipes and its proper regulation play a key role in assuring the safe and economic operation of a pulverized coal-fired boiler during the combustion process.
锅炉燃烧过程中,准确测量各风管中的煤粉浓度并指导调节对锅炉的安全、经济运行非常重要。
2.
According to the analysis of the existent problems in the project of system monitor and adjustment, key technology of pulverized-coal distribution and pulverized-coal concentration measurement is put forward.
文章针对系统存在的问题进行了分析 ,提出了系统监测、调整方案煤粉分配及煤粉浓度监测技术的要
3.
Aiming at dynamic error during measuring pulverized-coal concentration by general heat balance method,a dynamic compensation soft measurement method is introduced.
针对常规热平衡法煤粉浓度测量存在动态误差的问题,提出对一次测量量进行变系数动态补偿的软测量方法。
6) concentration of pulverized coal
煤粉浓度
1.
This system is based on fieldbus technology,and it could realize on-line monitoring for the velocity and temperature of primary and secondary air,and for the temperature and concentration of pulverized coal with on-line monitoring software by independent development.
该系统基于现场总线技术,采用热平衡法煤粉浓度测量原理,结合自主开发的模块化在线监测软件包,能够实现锅炉一、二、三次风速,风温和煤粉浓度,煤粉温度的实时在线监测和网络远程监测两大功能,帮助运行人员准确调整锅炉燃烧配风,使锅炉运行达到配风均匀,燃烧稳定,防止堵管,从而有效地提高锅炉运行的安全性、稳定性和经济性。
2.
To meet the demand of boiler s economical and stable combustion in 200MW coal-fired generating units,an innovatory project which the concentration of pulverized coal is measured in one-off wind system is presented.
从200MW火电机组锅炉燃烧的经济性、稳定性需求出发,提出一次风系统风粉在线测量的改造方案,重点讲述测量煤粉浓度的工作原理和整个系统的安装、调试步骤、故障排除方法等内容。
补充资料：低NO_x煤粉燃烧器
低NO_x煤粉燃烧器
low NO_x pulverized-coal burner
(1 iN()[11、、一f、一、一:一、11:一，‘一i低NO二煤粉燃烧器(low NOJ pulverized一eoalburner)能降低和抑制NO，生成的煤粉燃烧器。低N认煤粉燃烧器通过特殊的结构设计，采用空气分级(见空气分级)、燃料分级(见二次燃料再燃烧)、浓淡燃烧和烟气再循环等技术措施，尽可能地降低燃烧区的氧浓度和火焰的峰值温度，减少在高温区的停留时间，抑制NO，的生成，或使已生成的NO，在下游区域还原成NZ。其中空气分级是应用最广.比较成熟的低NO，技术。现有电站锅炉上采用的低NO，燃烧器的结构型式很多，随着制造厂的不同而有较大的差异，但基本原理类同。 双调风旋流燃烧器将二次风分成内二次风和外二次风两股气流，通过调风器和旋流叶片分别控制各NO，的生成，见图5。二次空气SGR一孟二次空气一次空气二次空气S口砚一二次空气 图5 SGR燃烧器 对于采用低NO，嫩烧器的锅炉，除燃用贫煤和无烟煤的以外，经过燃烧优化调整后，通常均可使NO，的排放量低于650 mg/m3(02=6%)(液态排渣锅炉NO，的排放量可能会比较高)。对于已有锅炉改用低NO二燃烧器时，因燃烧推迟而有可能会使效率降低一些。自的风量和旋流强度，以调节一、二次风的混合，使其在燃烧器出口附近的火焰根部形成缺氧富燃料区，使燃烧推迟，火焰温度降低，NO，的生成量减少，在下游形成富氧的燃尽区，保证燃料的完全燃烧，见图1。外二次风调风俗 ┌─┐ ┌────────┤川│ │l/沪. │ │ └────────┤ │┌─────────┤ ││一仁业班丛旦止罕生│ │└─────────┴─┘点火油枪次风+煤粉或烟气 图1双调风旋流燃烧器 低NO，直流燃烧器将80%左右的燃烧空气送人主燃烧器，在主燃烧器区域形成缺氧富燃料的工况，降低火焰峰值温度，既减少NO二的生成，又有可能使已生成的NO，还原成氮分子(NZ).从而减少NO二的排放量。而在主燃烧器的顶部设置燃尽风OFA，将剩余的空气由此送人炉膛，使未完全燃烧产物燃尽.见图2。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条