1. College of Chemical EngineeringFuzhou University No. 2 Xueyuan Road, University Town 350116 Fuzhou China
2. National Engineering Laboratory for Pipeline Safety/Beijing Key Laboratory of Urban Oil and Gas Distribution TechnologyChina University of Petroleum-Beijing No. 18 Fuxue Road, Changping District 102249 Beijing China
3. PetroChina Marketing Company No. 9 Dongzhimen North Street, Dongcheng District 100007 Beijing China