A cost-optimal scenario of CO2 sequestration in a carbon-constrained world through to 2050
A cost-optimal scenario of CO2 sequestration in a carbon-constrained world through to 2050
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DOI：
10.4236/ns.2013.52a043
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发表时间：
2013-02
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影响因子：
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通讯作者：
T. Takeshita
中科院分区：
文献类型：
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作者：
T. Takeshita
在本文中，一个区域分解的全球能源系统模型与二氧化碳捕获和封存（CCS）的整个链条的详细治疗是用来推导出成本最优的全球模式，在区域详细的二氧化碳封存在2010-2050年期间的目标下，在2050年全球能源相关的二氧化碳排放量减半，与2005年的水平。主要结论如下。首先，提高煤层气采收率将成为CO2封存的关键早期机会，因此美国、中国和印度等富煤地区将在全球CO2封存中发挥主导作用。提高采收率还将从CCS部署的初始阶段开始参与全球CO2封存，2030年可能主要应用于中国、东南亚和西非，2050年主要应用于中东。第二，随着时间的推移，将在越来越多的世界区域进行二氧化碳封存。特别是，CCS将在今天的发展中国家广泛部署。第三，越来越多的捕获的二氧化碳将储存在世界许多地方的含水层中，因为它们丰富而广泛，而且成本低。结果表明，到2050年，含水层在全球CO2固存中的份额将达到82.0%。
In this paper, a regionally disaggregated global energy system model with a detailed treatment of the whole chain of CO2 capture and storage (CCS) is used to derive the cost-optimal global pattern of CO2 sequestration in regional detail over the period 2010-2050 under the target of halving global energy-related CO2 emissions in 2050 compared to the 2005 level. The major conclusions are the following. First, enhanced coalbed methane recovery will become a key early opportunity for CO2 sequestration, so coalrich regions such as the US, China, and India will play a leading role in global CO2 sequestration. Enhanced oil recovery will also have a participation in global CO2 sequestration from the initial stage of CCS deployment, which may be applied mainly in China, southeastern Asia, and West Africa in 2030 and mainly in the Middle East in 2050. Second, CO2 sequestration will be carried out in an increasing number of world regions over time. In particular, CCS will be deployed extensively in today’s developing countries. Third, an increasing amount of the captured CO2 will be stored in aquifers in many parts of the world due to their abundant and widespread availability and their low cost. It is shown that the share of aquifers in global CO2 sequestration reaches 82.0% in 2050.