Abstract: It is an urgent task to reduce atmospheric emissions of carbon dioxide and mitigate global warming. The global capacity, carbon dioxide residence time and the cost for different carbon sinks are introduced. Geological sequestration of carbon dioxide is considered the best choice for near-term reduction of stationary point-source carbon dioxide emission by comparison. The problems to be solved in carbon dioxide geological sequestration are analyzed from chemical engineering and application fundamentals. Under the geological conditions of high temperature and high pressure, the thermodynamic research on complicated multi-phase equilibrium of the system containing carbon dioxide and brine in porous media is a key subject.

摘要： 介绍了不同减排方法对二氧化碳的总处理量和二氧化碳保持时间及成本估算。通过比较，地质减排体现出明显的优势。从化学工程技术和应用基础理论层面上对二氧化碳地质减排需要解决的问题进行了分析，从中发现，高温高压地质条件下，二氧化碳-盐水体系及其在多孔介质中复杂多相平衡的热力学研究是二氧化碳地质减排的关键性课题。