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> Department of Chemical Engineering Department of Chemical Engineering
Education
visiting scholar from University of British Columbia(Cadana)
PhD from China University of Petroleum Beijing (China)
Masters from China University of Petroleum Beijing (China)
visiting scholar from University of British Columbia(Cadana)
PhD from China University of Petroleum Beijing (China)
Masters from China University of Petroleum Beijing (China)
Research
Dr. Liu mainly focuses on hydrodynamics and scale-up of gas-solid
fluidized bed reactors. In 1999, he proposed a gas-solid airlift loop
reactor (GSALR), working on hydrodynamics, mass and heat transfer as well as scale-up of the reactor. In 2007 and 2010, GSALR was respectively commercialized as a catalyst stripper in the 80×104 t/a RFCC Units of SINOPEC Yangzi Branch and SINOPEC Yanshan Branch, which brought him a Science and Technology Process Award of SINOPEC in 2011. Recently Dr. Liu has been working on a new approach to significantly increase catalyst to oil ratio by precooling regenerated catalyst.
Gas-solid quick separator is a good alternative of cyclone. Dr. Liu has been focusing on optimization and scale-up of a horizontally positioned separator. Compared with cyclone, the separator offers high separation efficiency (greater than 98%), smaller size (about half of size of cyclone), lower pressure drop(less than 3 kPa) and shorter residence time of gas and particles (less than 0.5 s). The separator was utilized in a pilot apparatus of Wanhua Chemical Group Co. Ltd., and has continually run for 1000 h.
Teaching
Unit Operations of Chemical Engineering; Course design of chemical engineering principle;
Cognition Practice
Grants and Awards
Science and Technology Process Award, SINOPEC Group, third prize, reward ranking: 2, 2011
Technological Invention Award, the Ministry of National Education, second prize, reward ranking: 5, 2010
Beijing Teaching Achievement Award, second prize, reward ranking: 5, 2013
Science and Technology Process Award, China petroleum and Chemical Industry Association, first prize, reward ranking: 10, 2012
Contact
Email: mengxiliu@sina.com
TEL: 86-10-897 338 03
Address of Office: 18Fuxue Road Chang ping, Beijing, China
Publications
1. Liu M.X., Zhang Y.M., Bi H.T, Grace J. R., Zhu Y.D. "Non-intrusive determination of bubble size in a gas-solid fluidized bed: An evaluation." Chemical Engineering Science, Vol.65(2010), pp3485-3493. (cited by 13)
2. Liu M.X., Lu C.X., Zhu X.M., Xie J.P., Shi M.X. "Bed density and circulation mass flowrate in a novel annulus-lifted gas-solid air loop reactor." Chemical Engineering Science, Vol.65(2010), pp5830-5840, (cited by 1)
3. Liu M.X., Lu C.X., Shi M.X., Yan C.Y., Fan Y.P. "Region-dependent mass transfer behavior in a forced circulation airlift loop reactor." Powder Technology, Vol. 201(2010), pp93-103, (cited by 1)
4. Liu M.X., Niu Z.C., Lu C.X., Wang Z.A. "Influence of gas distributor position on hydrodynamics of an annulus-lifted air loop reactor." Journal of chemical industry and engineering. Vol.61(2010), pp2250-2256.
5. Liu M.X., Lu C.X., Shi M.X., "Advances in gas-solids airlift loop reactor." Journal of chemical industry and engineering, Vol. 64(2013), pp116-123.
Granted Patents
1. Liu M.X., Lu C.X., Wang Z.A., Xie J.P., "An annulus-lifted air loop reactor," CN200710152287.X, 2010
2. Liu M.X., Lu C.X., Wang Z.A., Guo X., Ding L., Zhang Y.J., "A liquid-solid hydrocyclone dealing with high solid inlet concentration," CN201110397628, 2014
3. Liu M.X., Lu C.X., Wang Z.A., Fan Y.P., " Circulating method for cold regenerated catalyst and catalytic cracking reaction regenerating system", CN201210152931, 2014
4. Liu M.X., Lu C.X., Wang Z.A., Fan Y.P., " Gas-solid circulation mixing steam stripper and mixing and steam stripping method of solid particles," CN201210152928, 2014
5. Liu M.X., Lu C.X., Zeng Q.F., Wang Z.A., Xie J., Zhou C., " Horizontal type gas-solid ultra-short rapid separation apparatus with nonuniform slits on gas exhaust pipe," CN201010281847, 2014
