1) coal particle density
煤细度
1.
The applications and effect of speed-adjustement hydraulic couple in adjusting coal particle density have been introduced.
介绍调速型液力偶合器在调整配合煤细度上的应用及效果。
2) the smashed degrees of the coal powder
配煤细度
3) PC granularity
煤粉细度
1.
Rational choice of PC granularity is of an important measure to decrease comprehensive cost of generating power in an electric power plant;
合理选择煤粉细度是降低发电综合成本重要措施
4) coal fineness
煤粉细度
1.
Three kinds of coal differed from fineness were burned in a laboratory-scale drop tube furnace for combustion test,and an 8-stage Andersen particle impactor was employed for sampling the primary particulate matter(PM),in order to study coal fineness effect on primary PM features during pulverized coal combustion.
研究煤粉细度对煤粉燃烧后一次颗粒物特性的影响。
2.
Two models respectively describing the pulverizing unit cost and the coal fineness of the middle-storage pulverizing system are established by means of the least-square support vector machine,and the combinational genetic algorithm is adopted to seek the optimal operation parameters for the minimum unit consumption in different operating modes.
利用最小二乘支持向量机分别建立了中间储仓式制粉系统的制粉单耗和煤粉细度模型,采用混合遗传算法对制粉单耗模型进行寻优,以获得不同工况下制粉单耗最小的运行参数,然后利用煤粉细度模型对优化后的运行参数进行煤粉细度预测,根据预测出的煤粉细度是否在给定范围内来反馈控制制粉单耗的优化。
3.
Since the next half year of 2004,coal fineness of JiuJiang stage three project 2×350MW units gradually began increasing, This brought a lot of problem to production, This paper individually analyzes different factors that influences coal dust milling, finds the reason causing coal fineness overproof and works out measures to reduce coal fineness.
九江发电厂三期工程2×350MW机组自2004年下半年以来,煤粉细度开始逐渐升高,给生产带来了诸多问题,文中分别对影响煤粉磨制的各个因素进行分析,从中找出煤粉细度超标的原因并制定出降低煤粉细度的措施。
5) fineness of pulverized coal
煤粉细度
1.
Through improving and debugging the firing system,optimizing the opera-tion adjustment and reducing the fineness of pulverized coal,the combustible matter in the fly ash was reduced to about 5.
通过对燃烧设备治理、优化运行调整、降低煤粉细度,使飞灰可燃物由原来的9。
2.
If the dynamic separator,powder mixture temperature 150℃, mill capacity sufficient margin is designed in the low-volatile coal pulverizer system,the fineness of pulverized coal,uniformity,a good fire and combustion stability can be assured.
该锅炉在启动调试及试生产过程中遇到分级风喷口烧红、汽包水位两侧偏差大、灰渣可燃物含量高以及燃烧稳定性差等问题,通过燃烧调整和采取一定的运行措施,控制了分级风喷口烧红和汽包水位偏差在允许的范围内;通过增加卫燃带,一定程度上降低了飞灰可燃物含量,提高了燃烧稳定性;对该炉燃烧系统和双进双出制粉系统存在的不足之处和改进方向进行了探讨,指出低挥发分无烟煤制粉系统如果配置动态分离器、一次风粉混合物温度设计在150℃、磨煤机容量留有足够的裕度,能够较好的保证煤粉细度、均匀性和良好的着火、燃尽和燃烧稳定性。
3.
In monitoring the combusting process of boiler, we obtained measures of reducing combustibles in fly ash and ash to improve efficiency of boiler by detailed detailedly analysing the ratio of the first and second wind speed, fineness of pulverized coal, coal type and so on.
通过对锅炉内燃烧过程的监控,对一、二次风率配比、煤粉细度、煤种变化等影响因素进行了详细分析,提出了降低锅炉飞灰可燃物、灰渣可燃物超标问题的措施及方法,提高锅炉效率。
6) fineness /fly ash
细度/粉煤灰
补充资料：装炉煤细度
装炉煤细度
fineness of coal charge
zhuanglumei xidu装炉煤细度(fineness of coal charge)装炉煤质量控制指标之一。细度是量度炼焦煤粉碎程度的一种指标，用0一3mm粒级煤占全部煤的质量百分率来表示。各国焦化厂都根据本厂煤源的煤质和设备状况确定细度控制目标。必须将煤粉碎到一定细度，以求混合均匀，从而改善焦炭内部结构的均匀性。但是，粉碎过细会降低装炉煤粘结性和散密度，从而降低焦炭的质量和产量。(l)细度对粘结性的影响。·装炉煤在加热到350~500℃时会发生热解反应而软化、熔融，形成气、液、固三相共存的塑性体。(见煤的塑性)煤粉碎过细时，一方面由于细煤粒内部一次热解生成的游离氢容易析出，新生的游离基迅速缔合而固化，从而使塑性体内液相量减少;另一方面，由于煤粒总表面积增大而吸附液相量增多，使塑性体的流动性变差。(见煤的流动度)上述两个方面就是装炉煤粉碎过细时产生“自瘦化现象”导致粘结性下降的原因。图l示出了装炉煤粒度对煤的膨胀度的影响:膨胀度是粘结性的一个指标，当煤粒度减小至0.5~到lmm时，其膨胀度开始明显降低;煤的粘结性不同，粒度对膨胀度影响的程度也不同。(2)细度对散密度的影响。随着煤细度的提高，当小于Zmm粒级含量从，。。「万=… 妖】I! 拟l曰!‘产气 0 0.5 1 23 粒度，n飞nl 图1几种不同粘结性煤的膨胀度与粒度的关系 图中曲线1、2、3、4表示煤的粘结性由强到弱的顺序、一万一厂 命一委二一亩一庙一谕3矿es;犷丽一毛花-~不 小于oZmm粒级，%小于0.smm粒级，肠 图2装炉媒中粒度个于。.2mm和小工。smm粒级的 含量对焦炭耐磨强度指标M:。的影响60%增加到80%时，散密度减小30一 40kg/m3。散密度减小使炭化室装煤量下降，装炉煤粘结性降低，从而导致焦炭的耐磨强度变差，即指标值Ml。(见米库姆转鼓试验)升高。(图2) 装炉煤细度控制范围为:。一3om粒级量常规炼焦为72一80%;配型煤炼焦为85%左右;捣固炼焦为90%以上，此时装入炭化室内煤饼的散密度取决于捣固机械的装备水平和操作制度，但受细度的影响不大。控制装炉煤细度的措施主要有:正确选用煤粉碎机;在粉碎前筛出粒度小于3~的煤，以免重复粉碎。 (}李少伶卜
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参考词条