کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6689522 | 501895 | 2014 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Conceptual design of coke-oven gas assisted coal to olefins process for high energy efficiency and low CO2 emission
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
مهندسی انرژی و فناوری های برق
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Conceptual design of coke-oven gas assisted coal to olefins process for high energy efficiency and low CO2 emission Conceptual design of coke-oven gas assisted coal to olefins process for high energy efficiency and low CO2 emission](/preview/png/6689522.png)
چکیده انگلیسی
Olefins are one of the most important platform chemicals. Developing coal-to-olefins (CTO) processes is regarded as one of promising alternatives to oil-to-olefins process. However, CTO suffers from high CO2 emission due to the high carbon contents of coal. In China, there is 7Â ÃÂ 1010Â m3 coke-oven gas (COG) produced in coke plants annually. However, most of the hydrogen-rich COG is utilized as fuel or discharged directly into the air. Such situation is a waste of precious hydrogen resource and serious economic loss, which causes serious environmental pollution either. This paper proposes a novel co-feed process of COG assist CTO in which CH4 of COG reacts with CO2 in a Dry Methane Reforming unit to reduce emissions, while the Steam Methane Reforming unit produces H2-rich syngas. H2 of COG can adjust the H/C ratio of syngas. The analysis shows that the energy efficiency of the co-feed process increases about 10%, while at the same time, life cycle carbon footprint is reduced by around 85% in comparison to the conventional CTO process. The economic sustainability of the co-feed process will be reached when the carbon tax would be higher than 150 CNY/t CO2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Energy - Volume 133, 15 November 2014, Pages 197-205
Journal: Applied Energy - Volume 133, 15 November 2014, Pages 197-205
نویسندگان
Yi Man, Siyu Yang, Jun Zhang, Yu Qian,