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| Sintering and scaling mechanism of FCC catalyst fines from the third cyclone separator |
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HU Ren-bo1, BAI Rui1, ZHAO Jin-chong1, GAO Min2, WANG Chang-dong2, YANG Chao-he1
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(1.School of Chemical Engineering in China University of Petroleum, Qingdao 266580, China; ;2.PetroChina Company Limited Fushun Petrochemical Company, Fushun 113008, China)
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| Abstract: |
| Fluid catalytic cracking (FCC) catalyst fines obtained from the third cyclone separator underflow were used as raw materials to study the scaling mechanism of flue gas expander. Crystal phase structure, thermal stability, micro-morphology pattern and skeleton density of FCC catalyst fines were explored by means of XRD, TG-DTA, SEM and density analysis at different temperatures. By comparing the variation rule of samples physical and chemical properties, the scaling mechanism was proposed. The results show that the scaling process is the liquid phase sintering and densitification of catalyst fines. |
| Key words: catalyst flue gas expander scaling catalyst fines third cyclone separator liquid phase sintering |
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