Techno-economic analysis of advanced stripper configurations for post-combustion CO2 capture amine processes

Oh, Hyun‐Taek; Ju, Youngsan; Chung, Kyounghee; Lee, Chang Ha

doi:10.1016/j.energy.2020.118164

Cited by 54 publications

(13 citation statements)

References 42 publications

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“…The operating parameters that determine both the technical and economic viability of the absorption system (Bolea, 2008) are: (a) The flow rate of the gas to be treated determines the size of the absorber, as well as the CO2 extracted from the smoke stream, which ranges from 80% to 95%, representing a significant installation cost, depending on the degree of CO2 separation settled down, (b) The flow of the solvent determines the size of the equipment, as well as it will be determined by the hydrodynamic parameters and the concentration of CO2 in the solutions, being called poor amine and rich amine, of how it is enriched or impoverished in the process of CO2 capture, (c) The CO2 present in the gas stream is at atmospheric pressure and at a low concentration of CO2, meaning reduced partial pressure of CO2 of 3-15 kPa. Therefore, if amines are the ones that offer low partial pressure conditions, it is the most suitable option for the treatment of combustion gases, (d) The energy consumption of the process is the sum of the thermal energy to regenerate the solvent (Oh et al, 2020) and the electrical energy for the operation of pumps and fans (Einbu et al, 2022). Energy is also needed to compress the captured CO2 to final pressure for storage and transport of 50 -100 kPa (manometric) (Sharif et al, 2021).…”

Section: Introducionmentioning

confidence: 99%

Energy Generation Cost Without and With CO2 Capture for Power Plants

Chavez

2022

Preprint

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This work addresses the National Strategic Program on Energy Transition, of the Energy Sector Program 2020–2024, Mexican Energy Ministry. The Energy Transition states, "Reach a level of energy consumption that is sustainable in the long term and that contributes globally to the mitigation of climate change and energy sovereignty." To answer the statement, it is necessary to mitigate the production of CO2, as the main greenhouse gas, constantly emitted by power plants, by the combustion of fossils, and a primary source of energy. The CO2 capture process is energy intensive, so its study and search for the optimization of mass transfer, energy parameters and cost analysis are necessary for its widespread application. In the context of climate change mitigation, CO2 capture and sequestration (CCS), as well as its possible long-term storage, or preferably its use (CCUS), represent a technological route to neutralize CO2 emissions without leaving to use fossil fuels, during a period in which these fuels are replaced or their use rationalized by means of energy efficiency improvement methods. The objective of this work is to analyze the investment in electricity generation without and with CO2 capture process in three power plants in Mexico: Natural Gas Boiler, Open Cycle Natural Gas Turbine Boiler and Coal Boiler. Efficiency and cost results are presented in production by energy use in power plants; as well as experimental and theorical results for the capture of CO2 considering post-combustion technology by chemical absorption, with 30% Monoethanolamine in aqueous solution, and ININ 18 structured packing. With CO2 capture process, it was reduced 9.7%, meaning 596.0 kt/y for for natural gas boilers, 9.8% with 607.5 kt/year captured for gas turbine technology; and 9.9% with 2029 kt/year for coal. For the Energy Transition, by capturing CO2, the costs would increase by 14% with capture, on net power of 153 MW for a natural gas boiler; 4.5%, on 228 MW for the gas turbine boiler; and it is even reduced to 2%, on 302 MW for coal.

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Section: Introducionmentioning

confidence: 99%

Energy Generation Cost Without and With CO2 Capture for Power Plants

Chavez

2022

Preprint

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“…The amine-based capture process is widely studied as a postcombustion capture process, and various process configurations are feasible to enhance the capture efficiency. , The demands to reduce the capture cost and to improve eco-friendliness drive the development of alternatives. One of the strong candidates is the cyclic capture process using chemical dry sorbents. , Three different Ca-based sorbents (natural CaCO 3 , natural dolomite, and synthetic CaO) have been evaluated for carbon capture from NGCC; since the sorbents are operated at a high CO 2 recycle temperature, the capacity and stability of sorbents and heat recovery have been investigated .…”

Section: Introductionmentioning

confidence: 99%

Performance and Cost Analysis of Natural Gas Combined Cycle Plants with Chemical Looping Combustion

Lee

Lee³

2021

ACS Omega

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The natural gas combined cycle (NGCC) is the most popular and efficient fossil fuel power plant; however, integrating a carbon capture system reduces its performance efficiency. The demand to reduce the carbon capture cost and improve eco-friendliness drives the development of alternatives. In this study, four alternative NGCC-based process schemes were designed: NGCC with amine carbon capture as a base configuration and NGCCs with three different chemical looping combustion (CLC) configurations. Detailed heat and material balances were evaluated for all four cases using the PRO/II simulation package. A comparative analysis of the gross and net power, plant efficiency, and carbon capture efficiency, which are imperative to optimizing the process configuration, was conducted for all of the proposed cases. All NGCC-CLC processes could produce higher net power than NGCC-MEA because the amine regenerator consumes a high amount of power in its operation. In the condition using an equal amount of natural gas supply, NGCC-CLC configurations using excess air could produce a net power of 510.1 MW with a plant efficiency of 44.35%. The excess air fed in both cases enabled the turbine to generate more power. NGCC-CLC using excess air with steam turbine integration has an investment cost of 132.9 $/net MWh, an operating cost of 56.7 $/net MWh year, and a levelized cost of electricity of 90.9 $/MWh. In addition, NGCC-CLC with excess air resulted in a carbon capture efficiency of 99.93% under 59.2 $/ton of CO 2 , which was higher than that of NGCC-MEA with a carbon efficiency of 95.1%. NGCC-CLC using excess air with steam turbine integration is considered as the most efficient process scheme for generating power from natural gas with regard to efficiency, cost, and environmental impact.

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“…The benchmark PCC technology is solvent-based chemical absorption using 30 wt.% monoethanolamine (MEA) with 90% CO2 capture rate, leading to a typical reboiler duty between 3.6-4.0 GJ/tonne CO2 [12]. The reboiler duty can be decreased through process intensification [13,14,15,16], however, this study focuses on the conventional process configuration with no modifications or optimisation.…”

Section: Introductionmentioning

confidence: 99%