Title: A zero carbon emission CCGT power plant and an existing steam power station modernization scheme
Abstract: CO 2 emission reduction is one of the major challenges of the future. It is impossible to reject fossil fuels altogether, since renewable energy sources are insufficient to satisfy growing energy demands. Therefore, the creation of a fossil fuel power plant with zero carbon emission becomes an important task. In this work, а combined cycle gas turbine (CCGT) power plant with natural gas oxy-fuel combustion and pressurized heat recovery steam generator is presented. Flue gas water vapor condensation provides low-grade heat utilization and more than 97 % CO 2 mass concentration in exhaust gases. The high purity of the captured CO 2 simplifies further CO 2 use. The evaluated efficiency is 51.6 % without considering the O 2 production and CO 2 compression costs and 43.5 % if they are included. This plant can compete with the existing CCGT power plants considering the carbon pricing and CO 2 capture and storage. The existing power station modernization scheme is proposed in this study. The plant efficiency increases by 8–11 % after modernization. The unification and localization possibility, low capital costs and mass production allow for this scheme in developing countries. The study is based on common Russian power plants and turbines. • Developing of a CCGT power plant with a zero carbon emission. • Suggestion of an existing fossil-fuel power station modernization scheme. • Evaluation of key operational characteristics interaction. • Impact of water vapor condensation heat on power plant efficiency.
Publication Year: 2021
Publication Date: 2021-07-24
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 5
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