1. State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, P. R. China
2. China University of Petroleum-Beijing, Beijing 102249, P. R. China
3. Zhejiang Ningbo City Fenghua District Power Supply Bureau, Ningbo, Zhejiang Province 315500, China
4. Sinopec Research Institute of Petroleum Processing, Beijing 100083, P. R. China
5. China University of Petroleum-Beijing at Karamay, Karamay, Xinjiang Province 834000, P. R. China