Progress of comprehensive utilization technology of oil shale

The comprehensive utilization technical route of "Oil-shale retorting,semicoke combustion,oil-shale ash as building materials and chemical raw materials" which is appropriate to the inherent characteristics of oil shale and satisfies the needs of Chinese energy development strategy,has good prospects for development.Combined with the characteristics of oil shale and oil-shale retorting technology,oil-shale semicoke combustion technology status and research results,this paper analyzed the principle of the comprehensive utilization system,discussed the key technical problems of the oil-shale comprehensive utilization system,and put forward oil-shale bubbling fluidized bed retort and semicoke circulating fluidized bed combustion combination system for oil refining,gas and heat supply system,with bubbling fluidized bed as retort furnace,circulating fluidized bed as semicoke combustion facility,hot ash generated by circulating fluidized bed combustion and circulating hot gas as the heat carrier of retort furnace,which realizes comprehensive utilization of oil shale resources.