Prune pit chars prepared by pyrolysis at heating rates of 1 and WClmin to 500, 700 and 900Β°C were subsequently gasified by exposure to CO2 at 900Β°C for various lengths of time. Gasification rate was found to be dependent on the conditions during pyrolysis: slow heating below 5OOT and prolonged expos
110. Effect of pyrolysis conditions on subsequent gasification of low-temperature lignocellulosic chars
β Scribed by D.M. Mackay; P.V. Roberts
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 129 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0008-6223
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β¦ Synopsis
Chars, prepared by pyrolysis of prune pits at I or lS"C/min to 500, 700 or 9OO"C, were subsequently gasified by CO, at 900Β°C. Pyrolysis conditions did not significantly affect the porosity developed for a given mass loss due specifically to gasification reactions, i.e. excluding additional pyrolytic losses.
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The effect of preoxidation of two highly caking coals in the temperature range 120-250Β°C on weight loss during pyrolysis in a N2 atmosphere up to 1000Β°C and reactivity of the resultant chars in 0.1 MPa air at 470Β°C has been investigated. Preoxidation markedly enhances char reactivity (by a factor of