Oxy-Coal Combustion for Power Generation Industry: Review of the Past 20 Years of RD Activies and What are the Future Challenges Ahead

摘要

Emissions of greenhouse gas from power generation can be greatly reduced by capture and storage of CO_2. The design and operation of a coal-fired power plant will significantly change when CO_2 capture is included. One of the key candidate CO_2 capture technologies considered is oxy-firing of coal. The primary challenge to the development of this technology is in the understanding of the process dynamics involved when operating an oxy-fired boiler together with oxygen production and flue gas processing for CO_2 capture [1, 2, 3]. This paper aims to present a brief review to the past 20 years of R&D activities by identifying the current state of understanding and spelling out the different challenges in the development of Oxy-Combustion Boiler for Coal Fired Power Plant. Primarily, this paper will present some of the keys results and outlines what data are available from the various pilot scale test undertaken by various research groups to understand the flame characteristics. The paper will also provide a short list of different issues raised during the discussion of the inaugural workshop organised by IEA Greenhouse Gas R&D Programme illustrating what are the future challenges to the development and commercialisation of this technology. This paper will also briefly mention the different on-going R&D work on oxy-fuel combustion for the power generation industry.