Abstract:

To reduce and ultimately control carbon dioxide emission during energy production and utilization is a challenge for China’s energy production. This paper, based on increasing energy utilization efficiency and conversion efficiency, capturing, separating and using carbon dioxide, discusses the technical trend of carbon dioxide reduction, and provides a reference for carbon dioxide emission reduction and utilization in China. During combustion, it is key to reduce carbon dioxide, which can be achieved through rinsing and cleaning coal technologies. Pre-combustion capture, chemical-looping, absorption separation are effective in separating and capturing carbon dioxide. Geological sealing of carbon dioxide including oil-gas reservoir sealing, deep saltwater layer sealing, coal sealing and deep sea sealing, of which oil-gas reservoir sealing along with enhanced oil recovery (EOR) is the best way. China will surely make achievements in carbon dioxide reduction as supported by techniques.

Key words: carbon dioxide emission reduction, absorption separation, geological sealing, CO_2EOR

摘要：

减缓以至最终有效控制能源生产利用过程中二氧化碳的排放,是中国能源生产面临的重大挑战。文章从提高能源利用效率和转化效率以及二氧化碳的捕集、分离和利用等方面介绍了中国二氧化碳减排的各种技术现状，并对二氧化碳减排技术的发展方向作了初步探讨，为中国二氧化碳减排及利用前景提供了一定的参考。燃煤过程中二氧化碳的减排是关键，洗煤技术、高效清洁煤技术等都可有效减少二氧化碳排放；分离捕集二氧化碳可利用燃前捕获、化学链燃烧技术、吸收分离法等。二氧化碳地质埋存包括油气藏埋存、深部盐水层埋存、煤层埋存和深海埋存。其中在油气藏埋存的同时进行EOR（Enhanced Oil Recovery）是二氧化碳地质埋存的最佳方式。随着各项技术的完善，中国二氧化碳减排必将取得显著成效。

关键词: 二氧化碳减排, 吸收分离, 地质埋存, 二氧化碳EOR