Calibrated dilatometer exercise to probe thermoplastic properties of coal in pressurized CO2  

作　　者：Vyacheslav N. Romanov Ronald J. Lynn Robert P. Warzinski 

机构地区：[1]U. S. Department of Energy, National Energy TechnologyLaboratory, P. O. Box 10940, Pittsburgh, PA 15236, USA

出　　处：《International Journal of Coal Science & Technology》2017年第3期245-251,共7页国际煤炭科学技术学报（英文）

摘　　要：This research was aimed at testing a hypothesis, that at elevated CO2 pressure coal can soften at temperatures well below those obtained in the presence of other gases. That could have serious negative implications for injection of CO2 into deep coal seams. We have examined the experimental design issues and procedures used in the previously published studies, and experimentally investigated the physical behavior of a similar coal in the presence of COa as a function of pressure and temperature, using the same high-pressure micro-dilatometer refurbished and carefully calibrated for this purpose. No notable reduction in coal softening temperature was observed in this study.

关 键 词：Dilatometry · Carbon dioxide· Coal· Plasticization 

分 类 号：TQ172.771[化学工程—水泥工业] TD163.1[化学工程—硅酸盐工业]