低温热解煤焦油产率、组成性质与热解温度的关系

RELATIONS AMONG YIELDS, CHARACTERIZATION OF LOW TEMPERATURE TARS AND PYROLYSIS TEMPERATURE

天祝煤通过回转炉装置低温（５００～７００℃）热解试验结果表明，焦油的产率和组成性质随热解温度呈阶段性变化，在５５０℃左右，焦油产率及焦油中酸性物、中性油、饱和烃等的产率获得最大值。超过５５０℃，特别是６００℃以上，由于焦油二次反应加剧，导致焦油产率及焦油正己烷可溶物中的中性油、酸性物、饱和烃、轻质芳烃产率降低，稠环芳烃产率升高。

Tianzhu coal pyrolysed apparatus with low temperatures (500～700℃) were investigated. The test results show that variation of yields and characterization of tar varies in steps with pyrolysis temperature. Maximum yields of tar and acids, neutral oil, saturates matters in tar can be obtained at about 550℃. When the temperature exceeds 550℃, especially higher than 600℃, the yields of tar and neutral oil, acids, saturates, low polyaromatic hydrocarbon matters that contained in n-hexane soluble oils are seen to decrease with the rise of temperature. While the yields of polyaromatic hydrocarbons matters increases with the rise of temperature. This is due to secondary reaction of tar in higher temperature.