通过对三种不同变质程度(Ro,max=0.38%-1.06%)原生结构煤和三种不同变形类型(弱脆性变形、强脆性变形和强韧性变形)构造变形煤的热解实验,探讨了不同变质、变形煤热解过程中H2的逸出特征.结果表明,三种不同变质程度原生结构煤(SGT01,JZT01和WY01)热解过程中H2的逸出量随温度增加(600℃-800℃)具有一定的差异,但三者热解H2累积生成量变化不大.在相同的温度下,三种不同类型构造变形煤(XTM09,XTM07和XTM10)热解中H2的逸出量差异明显,变形程度较强的强韧性变形煤(XTM10)和强脆性变形煤(XTM07)热解H2产出速率和累积生成量均明显小于变形程度较弱的弱脆性变形煤(XTM09);强韧性变形煤(XTM10)热解H2产出速率和累积生成量又明显低于强脆性变形煤(XTM07).
In this work,three different metamorphic grade undeformed coals(Ro,max=0.38%-1.06%)and three different deformation type coals(weak-brittle deformed coal,strongbrittle deformed coal and strong-ductile deformed coal)were compared,evolution characteristics of hydrogen from gaseous products on different metamorphic grades and deformation types deformed coals were explored during pyrolysis.The results show that there is a definite difference in the transgression amount of H2 with the increasing temperature during the pyrolysis of the three undeformed coals(SGT01,JZT01 and WY01),but there is little difference on the accumulated generation of H2 during their pyrolysis.At the same temperature,there are obviously differences during the emission of three deformed coals,it is obviously that the generation amount of H2 of strong-ductile deformed coal(XTM10)and strong-brittle deformed coal(XTM07)are less than that of weak-brittle deformed coal(XTM09).It is clearly that the generation amount of H2 of strong-ductile deformed coal(XTM10)also less than that of strong-brittle deformed coal(XTM07).