CO Adsorptive Characteristics of Macerals in Low Rank Coals

详细信息   

• 责任者：Zhang Jiuling （School of Resource and Safety Engineering ; China University of Mining and Technology ; Beijing 100083 ; China） ; Guo Liwen
• 刊名：Coal Geology & Exploration
• 出版年：2008
• 卷期：36(5)
• 关键词：煤 ; coal ; 显微组分 ; macerals
• 页码：p.1-5
• 图表：4 illus., 2 tables, 23 refs.
• 分类号：1004
• issnNo：ISSN1001-1986
• isbnNo：CN61-1155/P

摘要

The study of the CO adsorptive capability of every maceral of low rank coal is highly significant for choosing the index gas for estimating spontaneous combustion of low rank coal. Under different temperature and pressure, the isothermal adsorption tests of pure inertinite and vitrinite are carried out at 30 ℃,40 ℃,50 ℃,55 ℃,60 ℃, and 65 ℃, respectively, after analyzing the proximate, element and maceral of coal samples. The results show that the adsorption isotherm of CO can be described by Langmuir equation at low temperature(T≤50 ℃); and the relationship is linear between the coal adsorption quantity of CO and the pressure at high temperature (T>50 ℃), it can be described by Henry equation, which increases with pressure, however,the temperature’s effect is so complex that the mechanism need to study further.