Conceptual design and analysis of a natural gas fired power plant with carbon dioxide capture

A natural gas fired power plant with carbon dioxide capture (P2C2) is investigated and designed in this research. The plant generates both electricity and process steam with virtually no emissions of pollutants such as nitrogen oxides, sulfur oxides and carbon dioxide. This plant features high power efficiency, and excellent economic performance. Removal of carbon dioxide from the flue gas of a power plant requires significant energy, however, the novel concepts and new techniques developed in this research, namely the Integrated Air Separation and Carbon Dioxide Capture, and the Compression-Evaporation Method, will push the maximum power efficiency of this plant to 45%. Under design conditions, this plant will generate 200 MW of electricity and 51 tonnes of process steam per hour, and will also produce saleable by-products including 9878 tonnes of nitrogen, 162 tonnes of argon and 2102 tonnes of liquid carbon dioxide per day. This plant is economically competitive with advanced conventional power plants, and will make a positive contribution to the reduction of environmental pollution and energy conservation.