86%, the yields of semicoke and retorting
gas are on average 83.
The oil and retorting
gas yields were less affected when oil shale was pressed into balls.
Moreover, the shale oil generated by retorting
Dachengzi oil shale is classified as sweet and high-nitrogen crude oil in terms of the classification method of crude oil .
5 mm and retorting
temperature between 450 and 600[degrees]C.
process carried out in the SJ-type retort is classified as an internal gas combustion method.
gas, mixed with air, enters the bottom of the retort and combustion of the gas provides retorting
process with heat.
Ammonia, which was formed by hydrogen in the steam reacting with the nitrogenous material in the shale, was extracted from the steam fed through the raw shale during retorting
Various surface retorting
processes can be categorized by heating options.
Algorithms for estimation of the distribution factor of oil in volatiles at retorting
Preliminary studies about the effect of calcination temperature on the leaching rate of aluminum and iron impurities in oil shale retorting
semicoke showed that iron and aluminum would stay in maximum active state at 700-800[degrees]C, and turn into acid-soluble substances, which resulted in the maximum leaching rate of iron and aluminum impurities in the ash .
of pulverized oil shale has the advantages of fully utilization of mined oil shale (after crushing and grinding), with the shortest pyrolysis reaction time and highest retorting
intensity in comparison with ordinary retorting
technologies for processing lump oil shale.
Reactor and furnace temperatures were controlled to obtain the desired retorting