1) the smashed degrees of the coal powder
配煤细度
2) fineness of mixed coal
配合煤细度
1.
The paper summarized the experience in improving the fineness of mixed coal, optimizing the scheme of coal blending and the exploration of anthracite coal blending, described the feasibility of reducing the cost of coal blending by improving coal blending technology.
文章总结了临涣焦化股份有限公司在改进配合煤细度、优化配合煤方案以及探索无烟煤配煤方面的经验,阐述了通过改进配煤技术、降低配煤成本的可行性。
3) coal blending scheduling
配煤调度
1.
In order to solve this problem, a mathematic model was set up on the basis of analyzing coal blending scheduling.
首先,根据配煤调度的实际情况,建立了相应的非线性数学模型。
4) 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。
5) 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
6) 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。
补充资料:煤的流动度
煤的流动度
fluidity of coal
mei de且udongdu煤的流动度(fluidsty of eoal)表征煤在干馏时形成的胶质体的粘度。是煤的塑性指标之一。流动度是研究煤的流变性和热分解动力学的有效手段,又能表征煤的塑性,可用以指导配煤和进行焦炭强度预测。根据测定原理可以把煤的流动度测定方法分为两类。一类是采用固定力矩的方法,属于这类的有基氏塑性计法;另一类为改变力矩的方法,属于该类的有戴维斯塑性计法和波拉本达塑谱仪法。 基氏塑性计法1934年由德国人基士勒(K.Gieseler)首先提出的。1 954年,美国材料试验协会(ASTM)制订了测试标准(ASTM D1812),波兰也制订了标准(PN一62G一0536)。其测定原理是,用固定力矩转动一个插入煤样中的搅拌桨,当煤受热形成胶质体时,随着温度的升高,胶质体的流动性发生变化,搅拌桨因之受到不同的阻力,转速发生相应的变化,从而测得煤的流动度曲线。通常以最大转速为流动度指标,称为基氏最大流动度%a、,用每分钟转动的角度(ddpm)来表示。用基氏塑性计还可测得煤的一些特性温度:开始软化温度‘,达到最大流动度时的温度‘。,固化温度吞和塑性温度区间tr一‘。(图l)ASTM标准的测试方法与波兰的方法在装煤甄的尺寸和形状、搅拌桨的形状、作用力矩和装煤方式方面都有不同之处, 故所测结果不能互比。 波拉本达塑谱仪法其测定原理是插入煤中的搅 拌器以固定速度转动,用搅拌器所受扭力随温度的变 化来表示胶质体的流动度的变化。图2为分别用波拉 本达塑谱仪和基氏塑性计测得的三种不同干燥无灰基 挥发分(F应)煤的流动度曲线。 又x 1 fl4reswe一一一-一一-一,-一-一.-一r一一-, 众},.、l 气二},J、l .口{,月、l”耳丫‘m…;{… 350 400 450 500 温度,℃ 图1基氏塑性计测得的流动度曲线版氏计波拉本达仪_~________ 5兀夕‘艺(JZ一5戈J+乙(了I叮{___一‘护少l州自)一1三、.bU十I。}11}4J口、上刁H瑕,U下工甘.{}、”,J’}11!{工U}}’j1 。L厂七{卜甘洲朋{}又川} 4【飞‘、4505‘)0100 450 500 350 401飞450 500 温度.C温度,C温度.C a乃c 图2不同挥发分煤的流动度曲线 ~肠、为34.4%的煤;b一。、为25.7%的煤; c一,一daf为41.7%的煤 1一塑谱仪测定的流动度曲线;2一基氏塑性计 测定的流动度曲线
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参考词条