Behavior of Fouling Deposits Formed on a Probe with Different Surface Temperatures
Behavior of Fouling Deposits Formed on a Probe with Different Surface Temperatures
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不同表面温度的探头上形成的污垢沉积物的行为
DOI：
10.1021/ef502141x
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发表时间：
2014-12
期刊：
影响因子：
5.3
通讯作者：
Li Letian
中科院分区：
文献类型：
--
作者：
Zhou Hao;Zhou Bin;Zhang Hailong;Li Letian
以准东煤为研究对象，在中试炉上进行了不同表面温度下煤表面污垢沉积行为的实验研究。在这项研究中，污垢沉积物收集在1298 K的炉温。此外，导热油的入口温度被设置为543、493和443 K，这与燃煤锅炉省煤器中的给水温度相当。沉积探针的表面温度在733-594、714-571和671-507 K的范围内变化。使用数字成像技术监测三种情况下存款厚度和存款形态随时间的变化。结果表明，探头表面温度对污垢存款的生长，矿物学和微观结构有显着的影响。在543、493和443 K温度下，三种污垢沉积物的稳定厚度分别在9.63-9.82、12.48-12.54和15.31-15.53 mm之间波动。
Zhun Dong (ZD) coal, which is characterized by high sodium levels, was burned in a pilot-scale furnace to investigate the behavior of fouling deposits on an oil-cooled probe with different surface temperatures. In this study, the fouling deposits were collected at 1298 K furnace temperature. In addition, the inlet temperatures of the conduction oil were set as 543, 493, and 443 K, which were comparable to the feedwater temperature in the coal-fired boiler economizer. The surface temperatures of the deposition probe varied in the ranges of 733–594, 714–571, and 671–507 K. A digital imaging technique was used to monitor variations in deposit thickness and deposit morphology over time for the three cases. The results revealed that the probe surface temperature had a significant effect on the growth, mineralogy, and microstructure of the fouling deposit. The stable thicknesses of the three fouling deposits fluctuated in the ranges of 9.63–9.82, 12.48–12.54, and 15.31–15.53 mm in the 543, 493, and 443 K cases,...
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