COMBUSTION OF SPENT SHALE IN FLUIDIZED-BED

Large amounts of spent shale are produced during oil production from o il shale. This spent shale has a caloric value of about 1100 kcal/kg a nd could be used as a low grade fuel for energy production. Up to now the spent shale has not been used. The first steps towards the use of spent shale were taken by Raul Uuesoo in the fifties [1-3]. He investi gated the combustion of spent shale in a fluidized bed, adapted combus tion theory for spent shale particles and provided the foundation for calculations for spent shale furnaces. A part of his investigations ar e reported in short form in this article.