燃料灰分

指出燃料灰分含量的高低、燃烧器雾化质量好坏、燃烧空气温度的高低及操作人员的技术水平的高低都是影响灰垢生成量的主要因素。

It is pointed out that the soot volume depends greatly upon ash content in the fuel , the performance of burner nozzle , air temperature , and burning operation .

根据粒径分布将燃料灰分为飞灰、循环灰及底灰，它们有不同的燃烧和传热特点；

According to the particle distribution , fuel ash is divided into three parts : fly ash , circulating ash and bottom ash , which have different characteristic in combustion and heat transfer .

其中，山神木麻黄小枝的灰分含量最低，而干重热值和去灰分热值最高，符合理想燃料对低灰分含量和高热值的要求；

Collina had the lowest ash content and the highest gross caloric value and ash free caloric value , indicating that it was satisfactory for ideal fuel wood species .

两产品灰分差为50%左右。制备洁净燃料时精煤灰分可小于3%，可燃体回收和产率均在90%左右，最高值分别为95.88%和94%。

The ash content of super-cleaned coal is less than 3 % , the yield and combustible recovery are all 90 % or so , the highest one is 95.88 % and 94 % respectively .

循环流化床（CFB）锅炉燃用高灰分劣质燃料时，高灰分将对炉内灰平衡产生明显影响，并进而影响CFB锅炉的炉内燃烧、传热、磨损以及粉尘污染物的排放等。

For circulating fluidized bed ( CFB ) boiler firing low-grade fuel with high ash content , the high ash content can affect the ash balance in furnace , and then affecting combustion , heat transfer , erosion , and dust emission performance etc , of the CFB boiler .

掺加造纸废液后，成型燃料易着火，但燃烧时间较长，不会增加成型燃料的灰分。

Adding pulping waste liquor could lower the ignition temperatuer , but increased the burning time . It had no influence on the ash content of the briquettes .

同时也模拟了燃料阴燃温度分布、燃烧过程中气体组分（O2，CO，CO2，H2O）及固体成分（燃料、焦炭和灰分）的变化过程。

Simultaneously , the profiles of solid temperature are examined . The evolutions of gas components ( including O2 , CO , CO2 and H2O ) and solid components ( including fuel , coke and ash ) are presented along the packed bed .