Author(s)

Xinyuan Pan, Shixing Ding, Shi Liu, Zhaoyu Liu and Baoming Sun

Corresponding Author

Xinyuan Pan

ABSTRACT

The purpose of this paper is to compare the releasing characteristics of the flame intermediate OH when the pulverized coal from Zhundong region and the acidified treated pulverized coal are completely burned at constant temperature. Since the content of the H in the complete combustion intermediate product OH is corresponding to the content of the H element in the pulverized coal, and then it can be used to compare the changes of the H content in Pulverized Coal after pickling. An open-type burner is fabricated to apply optical measurement techniques. In this paper, simultaneous measurement of OH-planar laser-induced fluorescence (PLIF) is performed and the entire main combustion area is examined. It is found that the content of OH in the acidified treated pulverized coal is generally lower (compared with the raw coal), which is consistent with the results of the pulverized coal ultimate analysis. Meanwhile, it is found that the burning range of the whole pickled coal flame becomes smaller and that the peak value of the coal powder after pickling is slightly delayed.

KEYWORDS

Pulverized coal combustion, OH distribution, simultaneous measurement, acidification treatment