Operating experience and improvement opportunities for coal-based IGCC plants

Holt, N. A.

doi:10.1179/mht.2003.001

Cited by 16 publications

(4 citation statements)

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“…The efficiency of an IGCC plant is typically 37.8 -41.5% (on a higher heating value basis) versus 35-37.5% for pulverized coal (PC) plants. 1,2 The emission rates for a typical PC plant with efficiency of 35% and selective catalytic reduction, flue gas desulfurization, and electrostatic precipitators are 0.2 lb/10 6 British thermal units (Btu) for SO 2 , 0.15 lb/10 6 Btu for nitrogen oxide (NO x ), and 2 lb/10 6 Btu for CO 2 . 1 The SO 2 , NO x , and CO 2 emissions from IGCC plants are typically ϳ40%, 60%, and 88% of the corresponding emissions from PC plants, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…6 The Frame 7F gas turbine has been used in the Tampa and Wabash River IGCC demonstration projects. 2 Recently, a new generation of Frame 7H turbines has become available. The Frame 7H design features a higher pressure ratio and higher firing temperature compared with the Frame 7F gas turbine.…”

Section: Introductionmentioning

confidence: 99%

“…An IGCC system includes three major procedures: (1) gasification island, (2) gas turbine combined cycle, and (3) air separation unit (ASU). 2 In a gasifier, coal or other feedstock is reacted with oxygen produced from an ASU in the presence of slurry water or steam to produce a syngas rich in CO and hydrogen (H 2 ). As explained later, an entrained flow gasifier, which features cocurrent flow of feedstock and oxidant, is used as a design basis.…”

Section: Introductionmentioning

confidence: 99%

“…Key areas that are the target of additional research, development, and demonstration include advances in gas turbines, optimization of the configuration and design of IGCC systems, and improved integration among components of the system. [2][3][4] In particular, advances in gas turbine technologies are expected to have important effects on the performance, emissions, and cost of IGCC systems. In this study, a conventional and an advanced gas turbine combined cycle are compared and evaluated with respect to key measures of process feasibility.…”

Section: Introductionmentioning

confidence: 99%

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Uncertainty Analysis of Integrated Gasification Combined Cycle Systems Based on Frame 7H versus 7F Gas Turbines

Zhu

Frey

2006

Journal of the Air & Waste Management Association

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Integrated gasification combined cycle (IGCC) technology is a promising alternative for clean generation of power and coproduction of chemicals from coal and other feedstocks. Advanced concepts for IGCC systems that incorporate state-of-the-art gas turbine systems, however, are not commercially demonstrated. Therefore, there is uncertainty regarding the future commercial-scale performance, emissions, and cost of such technologies. The Frame 7F gas turbine represents current state-of-practice, whereas the Frame 7H is the most recently introduced advanced commercial gas turbine. The objective of this study was to evaluate the risks and potential payoffs of IGCC technology based on different gas turbine combined cycle designs. Models of entrained-flow gasifierbased IGCC systems with Frame 7F (IGCC-7F) and 7H gas turbine combined cycles (IGCC-7H) were developed in ASPEN Plus. An uncertainty analysis was conducted. Gasifier carbon conversion and project cost uncertainty are identified as the most important uncertain inputs with respect to system performance and cost. The uncertainties in the difference of the efficiencies and costs for the two systems are characterized. Despite uncertainty, the IGCC-7H system is robustly preferred to the IGCC-7F system. Advances in gas turbine design will improve the performance, emissions, and cost of IGCC systems. The implications of this study for decision-making regarding technology selection, research planning, and plant operation are discussed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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