Calibrated dilatometer exercise to probe thermoplastic properties of coal in pressurized CO₂ [electronic resource]

• Ngôn ngữ: eng
• Ký hiệu phân loại: 622.33 *Carbonaceous materials
• Thông tin xuất bản: Morgantown, W.Va. : Oak Ridge, Tenn. : National Energy Technology Laboratory (U.S.) ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2017
• Mô tả vật lý: Size: p. 245-251 : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 267774
• Chủ đề: 1. 01 coal, lignite, and peat; 2. 36 materials science; 3. 47 other instrumentation; 4. 54 environmental sciences; 5. 58 geosciences

Tóm tắt

 This research was aimed at testing a hypothesis, that at elevated CO<
 sub>
 2<
 /sub>
  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 CO<
 sub>
 2<
 /sub>
  into deep coal seams. Here, 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 CO<
 sub>
 2<
 /sub>
  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.