Catalyzing cracking slurry oil topping tech. and industry apparatus thereof

This invention belongs to the fuel chemical industry technology area, it mainly relates to the catalytic cracking slurry topping and its industry device. The slurry materials are heated to 290-360 deg.C and then they are added into the slurry topping tower continuously. The slurry is evaporated into light and heavy components under the operational pressure of 0.5-5 Kpa, and the light component is totally pulled out from the light oil collector which is between the rectifying and extracting tower. After the light oil is cooled, one part of the light oil can be as cold circumfluence of the tower top, and the other part can be as the material of the viscosity breaking, delayed coke and thermal cracking device. The heavy component is pulled out from the bottom of the tower after it is extracted by the overheat water vapor in the extracting part. It is supplied to the asphalt tempered device as the soft tempered component of the asphalt to construct high lever road, the density of it is higher than 1.05g/cm3, the content of wax is lower than 3.0%, and the flash point higher than 230 deg.C. It is suitable to be the soft tempered component of the asphalt to construct high lever road. The material buffer tank, slurry topping tower, heating furnace, pump, cooler and the other off-set device match with this technology, and it can realize the continuous operation of this technology. This invention can save the energy, have high efficiency, operate smart and the adaptability of material is extensive.