Calcined dolomite, magnesite, and calcite for cleaning hot gas from a fluidized bed biomass gasifier with steam: Life and usefulness
Journal Article
·
· Industrial and Engineering Chemistry Research
- Univ. of Saragossa (Spain). Dept. of Chemical and Environmental Engineering
- Univ. Complutense of Madrid (Spain). Dept. of Chemical Engineering
Calcined dolomites, limestones, and magnesites are active and inexpensive solids for cleaning raw hot gas from biomass gasifiers with steam. The variations of their activities with time-on-stream are studied here. Simultaneous coke formation and coke elimination by steam gasification increases the life of these naturally occurring catalysts under some circumstances. The lives of these solids are studied at different temperatures (800--880 C), space times (0.08--0.32 kg of dolomite{center_dot}h/nm{sup 3}), particle diameters (1--4 mm), and types of solid. Not much deactivation was observed for tar concentration in the raw gas below 48 g/nm{sup 3}, particle diameters of less than 1.9 mm, temperatures above 800 C, and space times above 0.13 kg{center_dot}h/nm{sup 3}. The effectiveness of these calcined minerals is compared with that of an inert material (silica sand) and with a commercial steam reforming catalyst (R-67 from Haldor Topsoee).
- OSTI ID:
- 413445
- Journal Information:
- Industrial and Engineering Chemistry Research, Journal Name: Industrial and Engineering Chemistry Research Journal Issue: 10 Vol. 35; ISSN IECRED; ISSN 0888-5885
- Country of Publication:
- United States
- Language:
- English
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