Abstract
An integrated gasification combined cycle (IGCC) is a technology that uses a high pressure gasifier to turn coal, a carbon based fuels into pressurized gas, this is also known as synthesis gas or syngas. The IGCC system consist of 4 main structures; air compression and separation unit, gasifier, combustion and steam turbine and heat recovery generator.A meta-analysis was conducted to investigate possible relationships between the efficiency and types of gasifiers used in the integrated gasification combined cycle in terms of the key thermodynamic laws. Through this analysis correlations were established between varying coal compositions, types of gasification systems and thermal efficiency. It was found that the updraft gasifier had the highest efficiency across most reports, thus making this procedure the most efficient with today’s current knowledge in terms of the thermodynamic principles associated with coal-fired power plants. It was also established that coal with lower moisture content will generally allow a system to be more efficient.
Highlights
The integrated gasification combined cycle process is one of the newest, most innovative coal-based power plant systems in today’s society. This is why we, as scientists, have chosen to perform a metastudy based on systems associated with the IGCC process due to its clean-burning, synthetic gas, which is stripped of pollutants and impurities and burnt to produce power yielding a much higher efficiency than any of its predecessors
Integrated Gasification Combined Cycle systems used in industry for the formation and production of syngas undoubtedly vary in regards to design and operation of the facility
An analysis of the thermodynamic parameters of four systems was done; updraft gasifier, downdraft gasifier, cross draft gasifier and the fluidized bed gasifier and the quality of syngas from each system was found to be dependent upon several parameters including varying coal compositions, types of gasification systems and thermal efficiency
Summary
The integrated gasification combined cycle process is one of the newest, most innovative coal-based power plant systems in today’s society This is why we, as scientists, have chosen to perform a metastudy based on systems associated with the IGCC process due to its clean-burning, synthetic gas (syngas), which is stripped of pollutants and impurities and burnt to produce power yielding a much higher efficiency than any of its predecessors. Through this meta-study the analysis of efficiency for the integrated gasification combined cycle (IGCC) power plants will be investigated across many fields of similarities, between the chosen fields the common factor is efficiency in which it’s the ratio of the amount of useful work done and the amount of final energy that it achieved. Evaluating and interpreting scientific articles and journals, a general idea is formed upon what is required to achieve the title of the most efficient technique to produce power from an IGCC power plant
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