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木屑烘干机尾部温控的要领!

2019-10-09 来源:pk10冠亚和值推算http://www.dwurp.cn 发布人:admin 浏览量:
  影响木屑干燥机尾部温度的五个主要原因:
  Five main reasons affecting the tail temperature of sawdust dryer are as follows:
  1.分解炉中使用的煤高于或低于所需量。 当比例高于60%且燃烧不完全时,未燃烧的煤粉仅在落入锯末干燥机中或被原料带入干燥机时才燃烧,这会增加锯末干燥机尾部的温度。  ; 当其小于60%时,热量不足取决于干燥器头部中煤的使用以完成原料的分解,干燥器尾部的温度低,并且锯末干燥器的输出受到限制。
  1. Coal used in calciner is higher or lower than required. When the proportion is higher than 60% and the combustion is incomplete, the unburned pulverized coal burns only when it falls into the sawdust dryer or is brought into the dryer by raw materials, which will increase the temperature of the tail of the sawdust dryer. When it is less than 60%, the insufficient heat depends on the use of coal in the head of the dryer to complete the decomposition of raw materials. The temperature at the tail of the dryer is low, and the output of the sawdust dryer is limited.
  2.锯末干燥机的漏气量。 当锯末干燥机末端的密封装置磨损时,密封效果不理想,温度会降低。 但是,如果煤粉燃烧不完全,泄漏的空气燃烧后温度将升高,而锯末干燥机配备了高温废气分析仪后,这种现象将很明显。
  2. Air leakage of sawdust dryer. When the sealing device at the end of sawdust dryer wears out, the sealing effect is not ideal and the temperature will decrease. However, if the pulverized coal combustion is incomplete, the temperature of the leaked air will rise after combustion, and this phenomenon will be obvious when the sawdust dryer is equipped with a high temperature exhaust gas analyzer.
  3.锯末干燥机尾部温度测量点和温度测量仪的可靠性。 由于尾矿干燥器的尾矿环境不利于热电偶的使用寿命。 因此,不容易准确地测量木屑干燥器尾部的温度。 为了延长热电偶的寿命,应该在锯末干燥机的尾部找到一个测量点,该测量点会受到高温气流或物料冲刷的影响,并且可以比较不同测量点的温度。 另外,当锯末干燥机的尾部热电偶的温度较低时,需要手动清洁它以反映实际温度。
木屑烘干机厂家
  3. Reliability of tail temperature measuring point and temperature measuring instrument of sawdust dryer. Because the tailings environment of tailings dryer is not conducive to the service life of thermocouples. Therefore, it is not easy to accurately measure the tail temperature of sawdust dryer. In order to prolong the life of thermocouple, a measuring point should be found at the tail of sawdust dryer, which will be affected by high temperature air flow or material erosion, and the temperature of different measuring points can be compared. In addition, when the temperature of the tail thermocouple of the sawdust dryer is low, it needs to be cleaned manually to reflect the actual temperature.
  4.锯末干燥机尾部的负压。 除了影响窑内物料,窑皮和成环的因素外,干燥机尾部的负压还与系统排气,预热器阻力和第三风道阻力等因素有关。 这些因素受几个子因素的影响。 影响。 当锯末干燥机末端的负压较低时,锯末干燥机尾部的温度不会太高。
  4. Negative pressure at the tail of sawdust dryer. In addition to the factors affecting the kiln material, kiln skin and ring formation, the negative pressure at the tail of the dryer is also related to the exhaust of the system, the resistance of the preheater and the resistance of the third duct. These factors are influenced by several sub-factors. Influence. When the negative pressure at the end of the sawdust dryer is low, the temperature at the end of the sawdust dryer will not be too high.
  5.锯末干燥机中火焰的形状,长度和温度以及煤管的位置。 火焰燃烧速度不够,燃烧温度向后移动,煤管伸入木屑干燥器中; 多管煤管外风比重大,火焰长; 锯末干燥机内部材料较少或煤粉偏斜。 高,甚至在烘干机之前,煤还没有完全燃烧。 当干燥机尾部的漏气量较大时,在此处进行二次燃烧。 锯末干燥机中没有异常现象,例如回路和大球。
  5. The shape, length and temperature of the flame in the sawdust dryer and the position of the coal pipe. The combustion speed of the flame is not enough, the combustion temperature moves backward, and the coal pipe extends into the sawdust dryer; the external air ratio of the multi pipe coal pipe is large, and the flame is long; the internal material of the saw dust dryer is less or the pulverized coal is skewed. High, even before the dryer, the coal was not fully burned. When the air leakage at the tail of the dryer is large, secondary combustion is carried out here. There are no abnormal phenomena in the sawdust dryer, such as loops and balls.
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