Cost and Performance Baseline for Fossil Energy Plants - Volume 3c: Natural Gas Combined Cycle at Elevation

Chou, Vincent; Haslback, John; Kyle, Allison; Lewis, Eric; Pinkerton, Lora L.; Shah, Vasant; Varghese, Elsy; Woods, Mark

doi:10.2172/1513265

Cited by 2 publications

(1 citation statement)

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“…The HRSG system is fed feedwater (FW) to create HP steam. The HRSG generates main and reheat steam by exchanging heat between the supplied FW and the gas turbine exhaust and delivers it to the steam turbine HP (at 18,400 kPa and 565.6 • C), IP (at 3000 kPa and 564.4 • C) and LP sections while the cooled exhaust gas heads to the flare stack [24]. The steam turbine takes the HRSG's steam and sends its power to the generator's drive shaft.…”

Section: Gtw Process Model Descriptionmentioning

confidence: 99%

Natural Gas Flaring Management System: A Novel Tool for Sustainable Gas Flaring Reduction in Nigeria

et al. 2023

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The use of hydrocarbon fuels increases with population growth and rising standards of living, and so does natural gas flaring. Natural gas flaring is both a waste of natural resources and a violation of Nigeria’s energy policy for sustainable development through natural gas conservation. However, it remains the most cost-efficient and effective associated natural gas (ANG) management option in developing countries such as Nigeria. The World Bank’s initiative to eliminate routine gas flaring by 2030 has increased the need to limit or eliminate routine gas flaring. Often, studies on natural gas utilisation techniques fail to consider the lack of practical tools that integrate economic, technical, and regulatory factors into a gas flaring management framework, and the intricacies of existing tools, which often come at the expense of simplicity to achieve real-time information output. This paper aims to establish a framework and ANG management tool to reduce regular gas flaring in Nigeria. This research established a management framework (using a flowchart decision tree) and models to provide a user-friendly ANG flaring tool (using a MATLAB graphical front end user interface with back-end ASPEN HYSYS thermodynamic models). This was combined with techno-economic models for liquefied natural gas, gas-to-methanol, and gas-to-wire ANG utilisation options. The tool was then tested with data obtained from Fields Y and X in the Niger Delta region of Nigeria. The results, considering both economic and technical factors, showed that the choice of liquefied natural gas for Field Y was best due to its proximity to the pipeline infrastructure and its cost-effectiveness, and the availability of a high-demand LNG market for that area. For Field X, gas-to-wire was best due to its proximity to the electrical grid and high electricity requirements for that area. Additional geographical profiles in West Africa and ANG utilisation alternatives were recommended for further investigation. This paper developed and validated a one-of-a-kind ANG flaring management tool that incorporates techno-economic analysis of selected ANG utilisation options to assist operators and investors in making more profitable investment decisions.

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Section: Gtw Process Model Descriptionmentioning

confidence: 99%

Natural Gas Flaring Management System: A Novel Tool for Sustainable Gas Flaring Reduction in Nigeria

et al. 2023

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Techno-Economic Assessment of Natural Gas Combined Cycle Power Plants with Carbon Capture and Utilization

Zhang

Nguyen

et al. 2023

Energy Fuels

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Carbon utilization in natural gas combined cycle (NGCC) power plants has attracted great attention due to necessary carbon reduction demands. In this study, NGCC power plants integrated with the carbon capture and utilization process (CCU) were developed: Case 2 (NGCC power plant with CO 2 conversion on precarbon capture) and case 3 (NGCC power plant with CO 2 conversion on postcarbon capture). Integrated process configurations were evaluated and compared with case 1 (NGCC power plant only with postcombustion carbon capture) in terms of technical (net power generation, natural gas consumption rate, syngas production rate, CO 2 quantity released into the environment) and economic (total capital cost, total annual revenue, return on investment, payback period, and cash flow) performance. Here, case 2 represented the most environmentally friendly option with the lowest CO 2 released. Besides, case 3 generated the highest amount of electricity due to a lower compression pressure demand for CO 2 utilization than storage in case 1. The economic analysis indicated that the payback periods of cases 1, 2, and 3 were 9.2, 17.18, and 6.9, respectively. Case 3 was the best option under the least capital expenditure, operating expenditure, and the highest annual revenue. Additionally, case 2 was competitive in terms of low total capital cost as compared to case 1. Therefore, the suggested NGCC power plant processes with CCU are viable options for reducing CO 2 emissions and improving the economics of NGCC power plants. In addition, the process may be used as a model for further CO 2 utilization from flue gas released by gas power plants.

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Cost and Performance Baseline for Fossil Energy Plants - Volume 3c: Natural Gas Combined Cycle at Elevation

Cited by 2 publications

References 0 publications

Natural Gas Flaring Management System: A Novel Tool for Sustainable Gas Flaring Reduction in Nigeria

Natural Gas Flaring Management System: A Novel Tool for Sustainable Gas Flaring Reduction in Nigeria

Techno-Economic Assessment of Natural Gas Combined Cycle Power Plants with Carbon Capture and Utilization

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