Acta GeotechnicaPreliminary assessment of CO₂ transport and storage costs of promising source–sink matching scenarios in Guangdong province, China

Bing Bai, Xiaochun Li, Yuping Yuan, Di Zhou & Pengchun Li 

Abstract

Guangdong is the most economically developed province in China, which is a large CO₂ emitter and hence is faced with severe carbon reduction pressures. In this paper, a cost assessment methodology based on scenario analysis is presented. A CO₂ source and sink database was built at Guangdong after detailed investigations on the point sources and sedimentary basins. Fifteen transport and five storage scenarios were defined and studied, respectively. Cost estimates based on these scenarios show that during its lifetime, the costs of both transport and storage depend on the amount of CO₂ processed. More CO₂ being processed will bring down the unit costs of both transport and storage. However, it was observed that there is a cost inflection point between the storage amount of 35.2 and 52.8 Mt/year, which means that as the storage amount increases, the storage cost will first decrease and then increase. Source region S1 in Guangdong has been recommended for an early chance of CO₂ storage. Preliminary cost comparisons have shown that the results presented in this study are reasonable, but to improve the cost assessment accuracy of offshore CO₂ storage, a methodology based on a CO₂ storage design that can integrate local prices needs to be further developed.

Preliminary assessment of CO2 transport and storage costs of promising source–sink matching scenarios in Guangdong province, China | Acta Geotechnica (springer.com)

【百度翻译】

摘要：

      广东是中国经济最发达的地区，也是二氧化碳排放大省，因此面临着严峻的碳减排压力。本文提出了一种基于情景分析的成本评估方法。通过对点源和沉积盆地的详细调查，建立了广东省CO2源汇数据库。分别定义和研究了15种运输和5种储存情景。基于这些情景的成本估计表明，在其使用寿命期间，运输和储存的成本取决于处理的二氧化碳量。处理更多的二氧化碳将降低运输和储存的单位成本。然而，据观察，在35.2 Mt/年和52.8 Mt/年的储存量之间存在成本拐点，这意味着随着储存量的增加，储存成本将先降低后增加。建议广东S1源区有早期CO2储存的机会。初步成本比较表明本研究的结果是合理的，但为了提高海上二氧化碳储存的成本评估准确性，需要进一步开发一种基于二氧化碳储存设计的方法，该方法可以整合当地价格。