腐泥型煤二次生烃热解模拟的荧光特征

通过对4块腐泥型煤原样及热解模拟残渣样的荧光特征的研究,对腐泥煤二次生烃特征加以探讨,得出主要结论为:(1)当开始二次生烃时,将出现蓝移现象,蓝移现象标志着二次生烃的开始;(2)蓝移现象发生的起始位置(镜质组反射率为标志)及蓝移现象的强度与样品的原始成熟度有密切关系,伴随着原始成熟度的提高,蓝移现象发生的成熟度位置将逐渐后移,其与初始成熟度的差值将先增大后减小,增大与减小的转折点推测位于1.4 6%~1.80%之间。

Fluorescent characteristic of sapropelic coal in pyrolitic simulation on secondary hydrocarbon generation

Analyses of secondary hydrocarbon generation in sapropelic coal and its residue from pyrolitic simulation are resulted in two conclusions:(1)While secondary hydrocarbon generation begins,the phenomena of blue shift takes place,it marks the start of secondary hydrocarbon generation;(2)the location (marked with the maturity of vitrinite) and strength of the phenomena generating have affinity with original maturity,with original maturity increasing,the location gradually moves back;the difference between generating maturity and original maturity will increase at first and then decrease,the turning point is suggested in the range of 1.46%~1.80% (Ro,max).