Oil shale semicoke fluidized combustion circulation gas heating technology
A technology for oil shale semi-coke and circulating gas, which is applied in the petroleum industry, direct heating dry distillation, coke oven and other directions to achieve the effect of solving environmental problems
Active Publication Date: 2015-04-01
NORTHEAST DIANLI UNIVERSITY +1
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An oil shale semicoke fluidized combustion and circulation gas heating technology is characterized by comprising the steps of sending oil shale semicoke greater than 0-15mm and residual gas into a fluid bed for low temperature combustion, heating circulation gas flowing in a diaphragm wall heat exchanger with a part of heat released by the combustion, discharging the other part of heat along with smoke generated by the combustion after exchanging heat with a tubular heat exchanger, allowing high-temperature ash and slag generated by the combustion of the semicoke to enter a fluid bed slag cooler for cooling, conveying cooled low-temperature ash and slag to a slag yard, allowing smoke to carry fly ash generated by the combustion to be discharged after exchanging the heat with a high-temperature air preheating tubular heat exchanger, a medium-high temperature gas heating tubular heat exchanger and a low-temperature air preheating tubular heat exchanger, mixing the circulation gas after heating cold circulation gas from a cold gas main line via the diaphragm wall heat exchanger with the cold gas, heating the mixed gas, and allowing the smoke temperature at an outlet of a hearth to be 850-950 DEG C, and hot circulation gas temperature at a hot gas outlet to be less than 720 DEG C.
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