Open AccessThe mathematical description of process of heat exchange particles of oil shale and ash the coolant in the semi-coking conditions in a rotating drum reactor installation with solid heat carrier
Author(s) -
А. А. Селиванов,
П. А. Батраков,
А. Н. Мракин,
И. А. Вдовенко,
О. В. Афанасьева
Publication year - 2020
Publication title -
izvestiâ vysših učebnyh zavedenij. problemy ènergetiki
Language(s) - English
Resource type - Journals
eISSN - 2658-5456
pISSN - 1998-9903
DOI - 10.30724/1998-9903-2019-21-6-51-60
Subject(s) - oil shale , endothermic process , coolant , fraction (chemistry) , heat transfer , decomposition , heat exchanger , delayed coker , retort , drum , coke , waste management , materials science , chemistry , thermodynamics , metallurgy , adsorption , mechanical engineering , physics , organic chemistry , engineering
The article deals with the modeling of heat transfer process in a drum reactor of a semi-coking unit of oil shale with a solid coolant between ash and shale particles in the conditions of constant separation of vapor-gas products. The dominant role of the convective component of the process is revealed and the curves of heating of shale particles are obtained taking into account the endothermic effect.It is established that the smallest fraction of fuel warms up within 30-60 seconds and further serves as a source of heat for other fractions. In the interval of 400-600 seconds, the heating of the largest fraction is completed. The further stay of the shale mixture in the reactor is caused by the lagging rate of the thermal decomposition process from heat exchange, and the temperature decrease by 20-25 0 C by the presence of the endothermic effect of the decomposition of organic matter.