摘要
以桦甸油页岩为研究对象,采用逐级提取实验,考察了不同升温速率及干馏终温对其内部赋存的Cr、Co、Pb、Cu、V五种微量元素的形态变迁特性的影响。结果发现,各元素均在2.5℃/min和20℃/min升温速率下表现出了较大的迁移率,且干馏终温升高更有利于元素的迁移;低升温速率和高干馏终温更能促进元素大部分形态的迁移,但硫化物结合态的迁移在高升温速率和高干馏终温则更为有利;元素不同形态的迁移总会有一部分向有机物结合态转变。
States transformation of trace element Cr,Co,Pb,Cu,V in Huadian oil shale during retorting was studied. The retorting experiment was conducted by sequential chemical extraction( SEC). The effects of heating rate and temperature on the transformation were investigated. The results indicated that trace elements have a higher migration rate in retorting at heating rate of 2. 5℃ / min and 20℃ / min,and the higher retorting temperature, the better trace elements migration. Most of states transformation are better migration in low heating rate and high final temperature,but sulfide bound fraction is better migration in high heating rate and high final temperature. Different states will have some parts migrate to organic matter bound fraction.
出处
《化学通报》
CAS
CSCD
北大核心
2015年第1期54-54,共1页
Chemistry
关键词
微量元素
油页岩
形态变迁
迁移率
Trace elements,Oil shale,States transformation,Migration rate
