Mercury porosimetry in the pressure range l-1000 atm was applied to a series of coals (72\*7-93\*2% carbon). Pore volume deduced from mercury penetration was compared with that from density measurement with mercury and n-hexane. It was suggested that the apparent increase of pore volume above the pr
Mercury porosimetry of upgraded western Canadian coals
โ Scribed by W.I. Friesen; O.I. Ogunsola
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 718 KB
- Volume
- 74
- Category
- Article
- ISSN
- 0016-2361
No coin nor oath required. For personal study only.
โฆ Synopsis
Mercury porosimetry was used to study changes in the pore structure of three western Canadian low-rank coals treated in three different atmospheres (nitrogen, steam and combustion products) at temperatures up to 500ยฐC. The intrusion curves are well described by two different power laws in the pressure range 0.1-200 MPa. Principal-component analysis was performed to determine relations among the power-law exponents, equilibrium moisture and volatile matier.
(
๐ SIMILAR VOLUMES
Three Western Canadian coals were gasified with air and steam in a fluidized bed of 0.73 mm sand and coal, at atmospheric pressure and temperatures of 1023-l 175K to produce a low-calorific-value gas. One non-caking and two caking coals were tested. The effects of temperature, coal feed rate, air/co
Samples of coal-ash slags were characterized using optical and scanning electron microscopy, electron microprobe analysis and X-ray diffraction. The results show that essentially the slags contain a glassy phase with minor crystalline phases such as mullite, cristobalite and quartz. Viscosities of t