China ranks first in methanol production around the world, occupying approximately 50% of the global production. But the dominant coal-to-methanol technology in China suffers from serious CO2 emission, which aggravates the global climate change. On the other hand, the development of biomass-to-methanol technology provides a method to reduce the CO2 emission of methanol production from sources, as the biomass feedstock is carbon neutral. And the application of CO2 capture and storage technology to biomass-to-methanol can further propose a low-cost way to capture, utilize and partially sequestrate CO2 from the atmosphere indirectly. In this work, the CO2 capture process in biomass-to-methanol production was conceptually designed and simulated by using ASPEN PLUS software. A Rectisol process integrated with a CO2 capture unit was provided. A techno-economic analysis was carried out to reveal the cost of different CO2 capture ratio and the effect on the biomass-to-methanol production. The results showed that moderately increased CO2 capture ratio could reduce the average cost per unit of CO2 capture, but excessive CO2 capture could also lead to a sharp increase in consumption and cost. 85% of CO2 capture was the most cost-effective choice for biomass-to-methanol. It indicated energy consumption of 453 MJ/t CO2, water consumption of 193 kg/t CO2, and cost of 135 CNY/t CO2, which were much lower than that of directly collecting CO2 from the atmosphere. The total production cost of methanol would also increase by 154 CNY/t, because of the CO2 capture and storage, and had a greater effect on the economic benefits of the biomass-to-methanol system. Therefore, policy-related subsidies were urgently needed. The cost of CO2 capture and storage in biomass-to-methanol could be offset when the subsidy of carbon abatement was around 40~50 CNY/t CO2. And once the subsidy was higher than 100 CNY/t CO2, the total production cost of biomass-to-methanol could be reduced to the same level as conventional coal-to-methanol.
Shiying YANG Jingwei ZHENG Baoxia LI
. Simulation and techno-economic analysis of CO2 capture during biomass-to-methanol[J]. The Chinese Journal of Process Engineering, 2019
, 19(6)
: 1250
-1256
.
DOI: 10.12034/j.issn.1009-606X.219168
[1] 蒋子龙, 姜博洋, 王金鹏, 孙宝文. 国内外甲醇市场分析及展望[J]. 化学工业, 2017, 35(6): 29-34.
[2] 柏锁柱. 天然气制甲醇竞争力分析及应用前景展望[J]. 炼油与化工, 2017, 6: 7-9.
[3] Li C, Bai H, Lu Y, Bian J, Xu H. Life-cycle assessment for coal-based methanol production in China [J]. Journal of Cleaner Production, 2018, 188: 1004-1017.
[4] Qin Z, Zhai G, Wu X, Yu Y, Zhang Z. Carbon footprint evaluation of coal-to-methanol chain with the hierarchical attribution management and life cycle assessment [J]. Energy Conversion and Management, 2016; 124: 168-179.
[5] 张媛媛, 王永刚, 田亚峻. 典型现代煤化工过程的二氧化碳排放比较[J]. 化工进展, 2016, 35(12): 4060-4064.
[6] 中华人民共和国科学技术部. 世界首座直接从大气中捕集二氧化碳装置在瑞士投入运行[EB/OL]. www.most.gov.cn/gnwkjdt/201706/t20170626_133727.htm, 2017.6.
[7] Liu Z, Peng W, Motahari-Nezhad M, Shahraki S, Beheshti M. Circulating fluidized bed gasification of biomass for flexible end-use of syngas: a micro and nano scale study for production of bio-methanol [J]. Journal of Cleaner Production, 2016, 129: 249-255.
[8] Carvalho L, Furusj? E, Kirtania K, Wetterlund E, Lundgren J, Anheden M, Wolf J. Techno-economic assessment of catalytic gasification of biomass powders for methanol production [J]. Bioresource Technology, 2017, 237:167-177.
[9] 蔡亚庆, 仇焕广, 徐志刚. 中国各区域秸秆资源可能源化利用的潜力分析[J]. 自然资源学报, 2011, 26(10): 1637-1646.
[10] 陆强, 赵雪冰, 郑宗明. 液体生物燃料技术与工程[M]. 上海: 上海科学技术出版社, 2013.
[11] 石祖梁, 李想, 王久臣, 王飞, 孙仁华, 宋成军. 中国秸秆资源空间分布特征及利用模式[J]. 中国人口?资源与环境, 2018, 28(7): 202-205.
[12] Van Rens G L M A, Huisman G H , De Lathouder H , Cornelissen R L. Performance and exergy analysis of biomass-to-fuel plants producing methanol, dimethylether or hydrogen [J]. Biomass and Bioenergy, 2011, 35: 145-154.
[13] Huisman G H , Van Rens G L M A , De Lathouder H , Cornelissen R L. Cost estimation of biomass-to-fuel plants producing methanol, dimethylether or hydrogen [J]. Biomass and Bioenergy, 2011, 35: 155-156.
[14] Peduzzi E, Tock L, Boissonnet G, Maréchal F. Thermo-economic evaluation and optimization of the thermo-chemical conversion of biomass into methanol [J]. Energy, 2013, 58: 9-16.
[15] Liu Z, Peng W, Motahari-Nezhad M, Shahraki S, Beheshti M. Circulating fluidized bed gasification of biomass for flexible end-use of syngas: a micro and nano scale study for production of bio-methanol [J]. Journal of Cleaner Production, 2016, 129: 249-255.
[16] 潘贤齐, 苏德仁, 周肇秋, 刘华财, 阴秀丽, 吴创之. 生物质流化床气化中试实验研究[J]. 农业机械学报, 2014, 45(10):175-179.
[17] Yang S, Li B, Zheng J, Kankala R K. Biomass-to-Methanol by dual-stage entrained flow gasification: Design and techno-economic analysis based on system modeling [J]. Journal of Cleaner Production, 2018, 205, 364-374.
[18] Blades T, Rudloff M, Schulze O. Sustainable SunFuel from CHOREN's Carbo-V? process [EB/OL]. www.choren.com, 2010.5.
[19] ASPEN TECHNOLOGY, INC. Aspen Plus V8.4 [EB/OL]. www.aspentech.com, 2012.6.
[20] 刘佳佳, 赵东亚, 田群宏, 李兆敏. CO2捕集、运输、驱油与封存全流程建模与优化[J]. 油气田地面工程, 2018, 37(10): 1-5.
[21] 王穗子, 刘帅, 樊江文, 张雅娴．碳交易市场现状及草地碳汇潜力研究[J]．草业学报，2018，27(6):177-187.
[22] 碳排放交易网. 2018年中国碳价调查：2019-2020成全国碳市场深化完善期[EB/OL]. www.huanjing100.com/p-4340.html, 2018.7.
