A new model of coal-water interaction and relevance for dewatering. Quarterly technical progress report, 1 September--30 November 1992
The picture that emerges is that there are quite large heat effects associated with low uptakes of solvents by the coal. The fact that the heat of wetting decreases dramatically with uptake has been illustrated many times. The final equilibrium uptake of solvent in a swollen coal probably takes place at near zero partial molar enthalpy of mixing, as we have argued earlier. It would, however, be interesting to establish what sorts of interactions give rise to the high initial heats of mixing. The trend of increasing heat of mixing with increasing temperature has also been earlier noted. It too is not yet understood.
- Research Organization:
- Brown Univ., Providence, RI (United States). Div. of Engineering
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG22-90PC90308
- OSTI ID:
- 10176120
- Report Number(s):
- DOE/PC/90308-9; ON: DE93019781
- Resource Relation:
- Other Information: PBD: [1992]
- Country of Publication:
- United States
- Language:
- English
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