Economic evaluation of CO2 pipeline transport in China
Economic evaluation of CO2 pipeline transport in China
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DOI：
10.1016/j.enconman.2011.10.022
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发表时间：
2012-03
影响因子：
10.4
通讯作者：
Dongjie Zhang;Wang Zhe;Ji-ning Sun;Z. Lili;Li Zheng
中科院分区：
文献类型：
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作者：
Dongjie Zhang;Wang Zhe;Ji-ning Sun;Z. Lili;Li Zheng
碳捕集与封存（CCS）是CO2减排的重要途径，而优化的CO2管道输送系统是大规模实施CCS的必要条件。建立了CO2管道输送的流体力学模型，研究了CO2管道的流体力学性能以及多种因素对管道沿着压降特性的影响。在此基础上，建立了CO2管道运输系统经济优化模型，并对我国CO2管道的单位运输成本进行了评估。流体力学模型计算结果表明，管径、土壤温度和管道标高变化对CO2在管道中的压降行为有显著影响。管道系统的设计，包括管道直径、增压器数量等，优化以实现最低的单位CO2运输成本。在单位成本方面，当输送流量和距离分别为1- 5 MtCO 2/年和100- 500 km时，CO2的单位输送成本主要在0.1- 0.6元/（tCO 2km）之间，管道入口压缩机的耗电成本占总成本的60%以上。研究结果可为我国CO2输送管道的设计和CCS项目的可行性评价提供参考。
Carbon capture and sequestration (CCS) is an important option for CO2mitigation and an optimized CO2pipeline transport system is necessary for large scale CCS implementation. In the present work, a hydrodynamic model for CO2pipeline transport was built up and the hydrodynamic performances of CO2pipeline as well as the impacts of multiple factors on pressure drop behavior along the pipeline were studied. Based on the model, an economic model was established to optimize the CO2pipeline transport system economically and to evaluate the unit transport cost of CO2pipeline in China. The hydrodynamic model results show that pipe diameter, soil temperature, and pipeline elevation change have significant influence on the pressure drop behavior of CO2in the pipeline. The design of pipeline system, including pipeline diameter and number of boosters etc., was optimized to achieve a lowest unit CO2transport cost. In regarding to the unit cost, when the transport flow rate and distance are between 1–5MtCO2/year and 100–500km, respectively, the unit CO2transport cost mainly lies between 0.1–0.6RMB/(tCO2km) and electricity consumption cost of the pipeline inlet compressor was found to take more than 60% of the total cost. The present work provides reference for CO2transport pipeline design and for feasibility evaluation of potential CCS projects in China.