烟气CO_2捕集工艺过程关键问题分析

Study on Some Key Issues in the Process of Carbon Dioxide Capture Technology for Flue Gas

CO2的减排越来越受到国际社会的关注,应用于火电厂的烟气CO2捕集技术是实现大规模降低火电厂CO2排放的主要手段之一,而捕集工艺是CO2捕集技术的基础。从工艺设计角度出发,简述了胺基吸收法的烟气预处理与捕集吸收工艺,分析了精脱硫、烟气冷却、吸收速率、电厂适应性、运行控制及节能工艺等因素对CO2捕集系统性能的影响,为火电厂烟气CO2大规模捕集的工艺设计提供参考。

The earbon dioxide emission reduction is drawing increasing concerns globally. Particularly, the CO2 capture technology applied in coal-fired power plants is one of the main methnds to reduce CO2 emissions from power plants on a large scale and the capture process is the basis of the technology. From the aspect of prncess design, the flue gas pretreatment and absorption proeesses of amine-based absorption are introduced, anti the impaets of fnrther desulfurization, flue gas cooling, absorption rate, plant adaptability, operational control and energy-saving technologies on CO2, capture are analyzed, which can provide reference for large-scale CO2 capture system design.