碳捕集、利用与封存(CCUS)技术对能源结构以煤为主的中国中远期碳减排可能具有重要作用, 而中国大陆CCUS匹配管网布局还鲜有研究。该文通过建立基于数学规划和优化的高级建模系统(GAMS)的源汇匹配管网优化模型对中国大陆主要的电厂、钢铁、水泥、合成氨、炼油等排放源以及油田、煤田、咸水层等封存库进行了匹配研究。结果表明: 管网布局以南北走向为主, 华东和华北地区是实施CCUS的重要地区。通过实施CO2地质封存, 每年可增产原油23 Mt, 增产煤层气4.9×1010 m3, 经济效益达7.8×1010 RMB/a。当CO2捕集封存量在288～2 886 Mt/a变化时, 单位CO2运输成本保持在7～12 RMB/t之间。当CO2捕集量达到2 886 Mt/a时, 管道总长度达5.0×104 km。
Abstract
Carbon capture, utilization and storage (CCUS) may play an important role in China's long-term carbon emissions reduction in which coal is the main energy source. However, there has been little research on the need for pipeline networks for CCUS in the Chinese Mainland. The CO2 pipeline networks and the economic feasibility of which for large-scale CCUS use were analyzed using a static source-sink matching model based on the general algebraic modeling system(GAMS) for the Chinese mainland. Most pipelines should run from south to north, while East China and North China have good structures for CCUS implementation. CO2 geological storage can produce 23 Mt/a crude oil through CO2 enhanced oil recovery (CO2-EOR), while 4.9×1010 m3/a natural gas can be produced by CO2 enhanced coal bed methane (CO2-ECBM), which will lead to an economic benefit of 7.8×1010 RMB/a. When the amount of CO2 in the CCUS is increased from 288 Mt/ato 2 886 Mt/a, the unit CO2 transportation cost is 7-12 RMB/t. The required total pipeline length will be 5.0×104 km for a CO2 capture rate of 2 886 Mt/a.
关键词
碳捕集 /
利用与封存(CCUS) /
源汇匹配 /
静态规划 /
管网规划
Key words
carbon capture /
utilization and storage (CCUS) /
source-sink matching /
static programming /
pipeline network planning
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