Environmental assessment of a combined heat and power plant configuration proposal with post-combustion CO2 capture for the Mexican oil and gas industry

Morales-Mora, M. A.; Pretelìn-Vergara, C. F.; Martínez-Delgadillo, Sergio A.; Iuga, Cristina; Nolasco-Hipólito, Cirilo

doi:10.1007/s10098-018-1630-3

Cited by 16 publications

(23 citation statements)

References 27 publications

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“…Comparison presented in Table 6. Table 6 presents several operation and maintenance subsystem boundary environmental EEIA and TEIA of the HCPV/T 2000x system compared with the operational lifecycle stage of the Steam Turbine-CHP (ST-CHP), Gas Turbine-Heat Recovery Steam Generator-CHP (GT-HRSG-CHP), Gas Turbine-Post Combustion Carbon Capture-CHP and (GT-PCC-HRSG-CHP) systems for the case studies in Mexico [54]. The ST-SHP system is a conventional plant, which uses high-pressure steam, while the GT-HRSG-CHP and GT-PCC-HRSG-CHP systems retrofitted from the ST-SHP system are gas turbine systems incorporated with HRSG, and PCC-HRSG respectively.…”

Section: Comparison Of Midpoint Results With Literaturementioning

confidence: 99%

“…The main reason for the higher environmental impacts of ST-CHP, GT-HRSG-CHP and GT-PCC-HRSG-CHP systems is probably as a result of fuel (natural gas) combustion, which contributes to the emission of substances; mainly NO x , CO 2 , carbon monoxide (CO), PM, CH 4 , and Volatile Organic Compounds (VOC). The ST-CHP and GT-PCC-HRSG-CHP systems have highest and lowest environmental impacts respectively, because of the reduction in fuel (natural gas) for combustion by the GT-PCC-HRSG-CHP systems [54].…”

Section: Comparison Of Midpoint Results With Literaturementioning

confidence: 99%

“…Midpoint operation and maintenance subsystem boundary environmental EEIA and TEIA with operational lifecycle stage of the ST-CHP, GT-HRSG-CHP and GT-PCC-HRSG-CHP systems case studies conducted in Mexico[54].…”

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confidence: 99%

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Environmental Impact of the High Concentrator Photovoltaic Thermal 2000x System

2019

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High Concentrator Photovoltaic Thermal (HCPV/T) systems produce both electrical and thermal energy and they are efficient in areas with high Direct Normal Irradiance (DNI). This paper estimates the lifecycle environmental impact of the HCPV/T 2000x system for both electrical and thermal functionalities. Process-based attributional method following the guidelines and framework of ISO 14044/40 was used to conduct the Life Cycle Assessment (LCA). The midpoint and endpoint impact categories were studied. It was found that the main hotspots are the production of the thermal energy system contributing with 50% and 55%, respectively, followed by the production of the tracking system with 29% and 32% and the operation and maintenance with 13% and 7%. The main contributor to the lifecycle environmental impact category indicators was found to be the raw materials acquisition/production and manufacturing of the thermal energy and tracking systems. The results indicate that the lifecycle environmental impact of the HCPV/T 2000x system is lower compared to fuel-based Combined Heat and Power (CHP) and non-Renewable Energy Sources (non-RES) systems.Sustainability 2019, 11, 7213 2 of 21 and HCPV/T systems include low Energy Payback Time (EPBT), land use reduction, and the potential increase in power density. CSP converts DNI into electrical and thermal energy by using concentrators and conventional power block such as steam turbines, gas turbines and Stirling engines [5].Concentrator solar energy technologies could be directly applied to the buildings or utility-scale and potentially contribute to the global electricity requirements with 7 and 25% by 2030 and 2050, respectively [6][7][8]. However, the application of those technologies could be limited in the regions of high DNI such as MENA (Middle East and North Africa), Mediterranean and the Sun Belt (vast areas of the United States and New Mexico) [6]. In terms of environmental impact, those technologies demonstrated much lower Global Warming Potential (GWP) in comparison to the fossil fuels sources [8,9]. Life Cycle Assessment (LCA) as a useful tool for assessing environmental impact has been applied on the LCPV, LCPV/T, HCPV, HCPV/T and CSP [8][9][10][11][12]. It was found that the use of HCPV/T system for domestic application replacing the traditional systems like electric national grid, boiler and electric heat pump, could reduce annual carbon dioxide (CO 2 ) by 3376 kg [10], while LCPV in building application by 93-101 g /kWh with 2.4 years EPBT and less than 142 g/kWh with 0.7 years EPBT [11,12]. The low values of EPBT are mainly as a result of reduced primary energy demand required for production of the HCPV/T and LCPV systems and their increased efficiency during energy production [10,13,14]. The GWP for HCPV was reported to vary between 16 and 45 g CO 2 -eq/kWh [8,9,15]. The lifecycle CO 2 emission of a parabolic trough and CSP power plant was estimated to be 26 g CO 2 -eq/kWh [16], and 36.3 g CO 2 -eq/kWh [17], respectively. All those studies carried out an environm...

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Section: Comparison Of Midpoint Results With Literaturementioning

confidence: 99%

Section: Comparison Of Midpoint Results With Literaturementioning

confidence: 99%

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Environmental Impact of the High Concentrator Photovoltaic Thermal 2000x System

2019

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“…The installed capacity of CHP plants in Mexico is 4042 MW, corresponding to 5.3% of the total capacity [2]. In the Mexican O&G industry (PEMEX), the CHP plants that cover the middle and high steam and electricity demands of gas processing, oil refinery, and petrochemical processes are suitable for reducing fossil fuel consumption and CO 2 [3]. However, on the supply side, the CHP plants face water supply competition between different users and sectors as well as moderate and severe water scarcity due to changes in land use in the middle and north of the country [4,5], which could affect their operations.…”

Section: Introductionmentioning

confidence: 99%

“…Other studies support that this technology would only contribute 1% in the case of the chemical conversion of CO 2 and between 4% and 8% [24,25] for EOR-CCS. However, this estimation does not consider: (i) the positive feedback effect of CO 2 -EOR, due to the extraction of PES and the production of gasoline, and greenhouse gases permanently [3,26] and (ii) the biophysical constraints or the capacity of the ecosystem to supply ecosystem services that would have to carry out such technological development. The analysis of other emergent tools for the use (function) of the CO 2 that are more suitable for society when coupled with such technology as CCUS [27,28], as well as the role that it has in the mitigation of climate change is therefore essential for responsible development.…”

Section: Introductionmentioning

confidence: 99%

An Integrated Approach to Determining the Capacity of Ecosystems to Supply Ecosystem Services into Life Cycle Assessment for a Carbon Capture System

Morales-Mora¹,

Bravo²,

Baril³

et al. 2020

Applied Sciences

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In the life cycle assessment (LCA) method, it is not possible to carry out an integrated sustainability analysis because the quantification of the biophysical capacity of the ecosystems to supply ecosystem services is not taken into account. This paper considers a methodological proposal connecting the flow demand of a process or system product from the technosphere and the feasibility of the ecosystem to supply based on the sink capacity. The ecosystem metabolism as an analytical framework and data from a case study of an LCA of combined heat and power (CHP) plant with and without post-combustion carbon capture (PCC) technology in Mexico were applied. Three scenarios, including water and energy depletion and climate change impact, are presented to show the types of results obtained when the process effect of operation is scaled to one year. The impact of the water–energy–carbon nexus over the natural infrastructure or ecological fund in LCA is analyzed. Further, the feasibility of the biomass energy with carbon capture and storage (BECCS) from this result for Mexico is discussed. On the supply side, in the three different scenarios, the CHP plant requires between 323.4 and 516 ha to supply the required oil as stock flow and 46–134 ha to supply the required freshwater. On the sink side, 52–5,096,511 ha is necessary to sequester the total CO2 emissions. Overall, the CHP plant generates 1.9–28.8 MW/ha of electricity to fulfill its function. The CHP with PCC is the option with fewer ecosystem services required.

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Simulation studies of the existing cogeneration system and alternative conceptions to improve the energy efficiency for an ethylene petrochemical plant

Silva

Martins

Gallego

et al. 2022

Intl J of Energy Research

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Summary Energy efficiency is relevant for the competitiveness and growth of global industries. In this way, simulation studies aiming to increase energy efficiency can be useful for both retrofitting and greenfield projects. Few ethylene process licensors hold the technologies; however, they present different proposals for projects with varying energy efficiency and integration degrees. In the present work, simulation studies of the cogeneration system of a petrochemical plant located in Brazil were performed in order to identify alternative configurations to increase the electricity production without affecting the heat supply to meet the process thermal demand. The cogeneration system of the analyzed plant includes an electric energy conversion system composed of turbo‐generators, back‐pressure and extraction/condensing steam turbines driving electricity generators, compressors and pumps, and heat exchangers. The simulation studies were performed using the HYSYS software to simulate design conditions and validate the model with the actual plant's experimental measurements. New cogeneration configurations were proposed in subsequent simulations, aiming at increasing electricity generation. In addition, exergetic efficiency and environmental analysis of the simulated configurations and an economic estimate for the most efficient proposal were performed. The results showed that the best alternative improved the electricity generation, increased the energy utilization factor by up to 16.2%, reduced greenhouse gas emissions by 22.8%, increased global exergetic efficiency by 28.9% and decreased the steam production and cold utility consumption of the cogeneration system compared to the design conditions.

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Environmental assessment of a combined heat and power plant configuration proposal with post-combustion CO2 capture for the Mexican oil and gas industry

Cited by 16 publications

References 27 publications

Environmental Impact of the High Concentrator Photovoltaic Thermal 2000x System

Environmental Impact of the High Concentrator Photovoltaic Thermal 2000x System

An Integrated Approach to Determining the Capacity of Ecosystems to Supply Ecosystem Services into Life Cycle Assessment for a Carbon Capture System

Simulation studies of the existing cogeneration system and alternative conceptions to improve the energy efficiency for an ethylene petrochemical plant

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