Abstract
The combustion rate of large coal particles in a fluidized bed is to a large extent controlled by the external diffusion. This rate will depend on the particle diameter. There are several processes that affect this diameter: the combustion process itself; attrition; fragmentation; and swelling. The last two processes can cause large diameter changes in a relatively short period, mainly during devolatilization. The experiments reported in this paper are aimed at finding a simple relationship between some properties of the parent coal particles, and the fragmentation and swelling during devolatilization.
Original language | English |
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Pages (from-to) | 911-916 |
Journal | Fuel |
Volume | 68 |
Issue number | 7 |
DOIs | |
Publication status | Published - 1989 |
Keywords
- Swelling
- Fluidized beds
- Devolatilization