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Heat exchange effects during underground gasification of thin coal layers

✍ Scribed by Ronde, H. ;Bruining, J. ;Essink, J. P. Oude ;Maljaars, A. P. E.

Publisher: Wiley (John Wiley & Sons)
Year: 1986
Tongue: English
Weight: 486 KB
Volume: 2
Category: Article
ISSN: 0748-8025
DOI: 10.1002/cnm.1630020405

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✦ Synopsis

Heat exchanges affect the gasification process particularly of thin coal layers. Further experimental evidence is presented that heat lost to the surroundings is partly reintroduced into the reaction zone (heat recuperation).

This heat recuperation effect has now been quantified by the finite element calculation of the transient temperature distribution. The calculated values show good agreement with the experimental data. The calculation shows, moreover, that the temperature rise in the coal bed above the adiabatic level must be partly attributed to the heat recuperation effect. Therefore, heat recuperation has a significant effect on the gasification reactions.

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