Comparative study of coal,natural gas,and coke-oven gas based methanol to olefins processes in China |
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| Affiliation: | 1. School of Chemical Engineering, South China University of Technology, Guangzhou 510640, PR China;2. State Key Lab for Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, PR China;1. State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;2. Sino-Danish College, University of Chinese Academy of Sciences, Beijing 100049, China;3. Department of Energy and Process Engineering, Norwegian University of Science and Technology, Kolbjørn Hejes vei 1b, 7491 Trondheim, Norway;4. National Engineering Laboratory for MTO, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;1. Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, PR China;2. School of Basic Medical Science, Jinan, 250012, PR China;3. School of Life Sciences, Shandong University, Qingdao 266237, PR China;4. Shandong University Climate Change and Health Center, Shandong University, Jinan 250100, PR China;1. School of Energy Science and Engineering, Central South University, Changsha 410083, People’s Republic of China;2. Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute (SARI), Chinese Academy of Sciences (CAS), Shanghai 201210, People’s Republic of China;3. Department of Chemical and Biochemical Engineering, Rutgers University, 98 Brett Rd, Piscataway, NJ 08854, USA;4. School of Physical Science and Technology, Shanghai Tech University, Shanghai 201210, People’s Republic of China;1. Key Laboratory of Coal Science and Technology (Taiyuan University of Technology), Ministry of Education and Shanxi Province, Taiyuan 030024, PR China;2. Training Base of State Key Laboratory of Coal Science and Technology Jointly Constructed by Shanxi Province and Ministry of Science and Technology, Taiyuan 030024, PR China;3. Environmental Engineering Department, Shanxi University, Taiyuan 030013, PR China;4. Institute of Mineral Resources Utilization, College of Mining Technology, Taiyuan University of Technology, Taiyuan 030024, PR China |
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| Abstract: | Traditional olefins production mainly depends on oil. In view of the short supply of oil, feedstocks are expanded to coal, natural gas, coke-oven gas, and methanol in China. In this paper, a comparative study of alternative olefins production is conducted from aspects of techno-economic feasibility and environmental friendliness. Results show that coal-to-olefins has a significant cost advantage. However, it suffers from low energy efficiency and serious CO2 emissions. To address these problems, this study proposes and analyses coal-to-olefins with CO2 capture, coal and natural gas-to-olefins, and coal and coke-oven gas-to-olefins. The two co-feed systems ensure great reduction of CO2 emissions and significant improving energy efficiency. They should be actively developed in regions with rich coal and gas. While in regions with rich coal and lean gas, coal-to-olefins with CO2 capture should be developed in large scale. This paper also provides several suggestions on planning these olefins production routes in China. |
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| Keywords: | Coal Natural gas Coke-oven gas Methanol Olefins Techno-economic analysis |
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