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1)  dense phase pulverized coal
高浓度煤粉
1.
This article expounded the principle and progress in combustion technology of dense phase pulverized coal at home and abroad.
对国内外高浓度煤粉燃烧技术的原理与进展进行了阐述。
2.
In order to popularize a new kind of highly efficient, clean and stable combustion technology,which is called "dense phase pulverized coal combustion technology", some special features of the technology,including simplicity of conveying, stable combustion and reduction of NO_x emission are being analyzed.
推广一种新型的高效、清洁和稳燃技术———高浓度煤粉燃烧技术。
2)  fuel rich pulverized coal combustion
高浓度煤粉燃烧
1.
On the basis of analyzing slagging deposition and its mechanisms, the main inducing properties in the boiler with fuel rich pulverized coal combustion are investigated.
在分析煤粉炉结渣过程及其机理的基础上,对高浓度煤粉燃烧时易导致结渣的主要特性进行了探讨,表明还原性气氛的出现和煤粉浓缩时富铁颗粒的富集有导致和促进结渣的作用;提出了一些防止和减轻结渣的必要措
3)  pulverized fuel high concen tration transport
煤粉高浓度输送
4)  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。
5)  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。
6)  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
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。
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