1. School of Safety Science and Engineering, Changzhou University, Changzhou 213164, PR China
2. Key Laboratory of Safety and High-efficiency Coal Mining, Ministry of Education (Anhui University of Science and Technology), Huainan 232001, PR China
3. School of Petrochemical Engineering, Changzhou University, Changzhou 213164, PR China
4. Jiangsu Province Key Laboratory of Fine Petrochemical Engineering, Changzhou University, Changzhou 213164, PR China