Development and multi-objective optimization of a newly proposed industrial heat recovery based cascaded hydrogen and ammonia synthesis system

Ishaq, Haris; Dinçer, İbrahim

doi:10.1016/j.scitotenv.2020.140671

Cited by 13 publications

(6 citation statements)

References 21 publications

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“…Using an air separator unit (ASU), nitrogen is added to the exhaust gas from the CO2 capture to produce ammonia with higher and more suitable efficiency, and gas rich in nitrogen and hydrogen enters the ammonia synthesis stage. In this section, the ammonia reaction takes place through two converters with a conversion efficiency of 25%, operating at a temperature and pressure of 350 and 30 bar, respectively [4,22]. The ammonia reaction is as follows:…”

Section: System Descriptionmentioning

confidence: 99%

“…The temperature and working pressure of WGS reactors are 450 and 14.4 bar, respectively, and their fractional conversion is 88.2 [22]. Ambient temperature and pressure are considered to be 25 and 1.01 bar, respectively.…”

Section: System Descriptionmentioning

confidence: 99%

“…For ASU, it was simulated in Aspen Plus software according to the reference [27]. For ammonia production, it was simulated in Aspen Hysys software based on the reference [22]. For gasification, modeling was performed using MATLAB software based on the article by Sirinivas et al [28].…”

Section: Governing Equationsmentioning

confidence: 99%

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Energy, Exergy, Exergoeconomic, and Exergoenvironmental Study of an Innovative Solar-Wind-Biomass Driven Polygeneration System for Power, Heat and Ammonia Production

Blanco Marigorta,

Khoshgoftar Manesh,

Davadgaran

et al. 2023

36th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 20

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Global warming has increased the use of renewable energy in energy systems. In this regard, the present work presents an innovative polygeneration system to produce power, ammonia, and process steam using solar, biomass, wind, and geothermal energies. By using a solar-syngas hybrid boiler, steam has been created in two high-pressure (HP) and low-pressure (LP) levels, and the HP steam is used for the gasification process. Syngas produced from biomass gasification process produces ammonia with the nitrogen obtained from an air separation unit by going through water gas shifting and carbon capture processes. Power consumption in the mentioned sections is produced by wind turbines. A Brayton cycle with ammonia and hydrogen hybrid fuel has been used to produce power and heat. The integration of supercritical CO2 and organic Rankine cycles with the hot flue gas output from the Brayton cycle has reduced heat losses and increased power generation. The presented renewable system has been analysed from the point of view of energy, exergy, exergeoeconomic, and exergoenvironmental (4E) methods. The overall results indicate that the total energy and exergy efficiencies are 31.33% and 38.53%, respectively. Also, the cost rate and environmental impacts of the whole system are calculated as 3222.35 $/h and 53.16 Pts/h, respectively. Meanwhile, the levelized cost and environmental impacts of electricity are equal to 0.18 $/kWh and 0.003 Pts/kWh, and the presented system is capable of producing 297.86 ton/day of ammonia.

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Section: System Descriptionmentioning

confidence: 99%

Section: System Descriptionmentioning

confidence: 99%

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Energy, Exergy, Exergoeconomic, and Exergoenvironmental Study of an Innovative Solar-Wind-Biomass Driven Polygeneration System for Power, Heat and Ammonia Production

Blanco Marigorta,

Khoshgoftar Manesh,

Davadgaran

et al. 2023

36th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 20

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“…Sahoni et al [24] presented the optimization of the operating conditions for preparing toluene; in this work, the main result indicated that reducing the temperature and pressure yielded significant benefits, increasing the profit from USD 0.0488 per kg to USD 0.0708 per kg, whilst reducing the environmental burden. Other works aiming to the optimization of the process conditions can be seen in [25,26]. These works focus on a single product; however, other works consider an entire product portfolio, such as the dairy or plastic product industry, taking into account a more robust optimization [27,28].…”

Section: Application Of Moo To Product Developmentmentioning

confidence: 99%

Applications of Multi-Objective Optimization to Industrial Processes: A Literature Review

2022

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Industrial processes provide several of the products and services required for society. However, each industry faces different challenges from different perspectives, all of which must be reconciled to obtain profitable, productive, controllable, safe and sustainable processes. In this context, multi-objective optimization has become a powerful tool to aid the decision-making mechanism in the synthesis, design, operation and control of such processes. The solution to the mathematical models provides the necessary tools to asses the system performance in terms of different metrics and evaluate the trade-offs between the objectives in conflict. The number of applications of multi- objective optimization in industrial processes is ample and each application has its own challenges. In the present literature review, a broad panorama of the applications in multi-objective optimization is presented, including future perspectives and open questions that still need to be addressed.

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“…However, the industrially produced hydrogen from water-gas conversion process or steam reforming process [ 2 , 3 ] contains some other contaminants (impurities), such as CO 2 , N 2 , CH 4 , CO, H 2 O, etc. Additionally, from an environmental point of view, refining and extracting hydrogen from industrial waste gas is necessary [ 4 ]. Therefore, in order to obtain high-purity hydrogen, it is necessary to separate H 2 from the gas mixture.…”

Section: Introductionmentioning

confidence: 99%

Sol-Gel Processed Cobalt-Doped Methylated Silica Membranes Calcined under N2 Atmosphere: Microstructure and Hydrogen Perm-Selectivity

Wang

Yang

et al. 2021

Materials

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Methyl-modified, cobalt-doped silica (Co/MSiO2) materials were synthesized by sol-gel technique calcined in N2 atmospheres, and membranes were made thereof by coating method. The effects of Co/Si molar ratio (nCo) on the physical-chemical constructions of Co/MSiO2 materials and microstructures of Co/MSiO2 membranes were systematically investigated. The gas permeance performance and hydrothermal stability of Co/MSiO2 membranes were also tested. The results show that the cobalt element in Co/MSiO2 material calcined at 400 °C exists not only as Si–O–Co bond but also as Co3O4 and CoO crystals. The introduction of metallic cobalt and methyl can enlarge the total pore volume and average pore size of the SiO2 membrane. The activation energy (Ea) values of H2, CO2, and N2 for Co/MSiO2 membranes are less than those for MSiO2 membranes. When operating at a pressure difference of 0.2 MPa and 200 °C compared with MSiO2 membrane, the permeances of H2, CO2, and N2 for Co/MSiO2 membrane with nCo = 0.08 increased by 1.17, 0.70, and 0.83 times, respectively, and the perm-selectivities of H2/CO2 and H2/N2 increased by 27.66% and 18.53%, respectively. After being steamed and thermally regenerated, the change of H2 permeance and H2 perm-selectivities for Co/MSiO2 membrane is much smaller than those for MSiO2 membrane.

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Development and multi-objective optimization of a newly proposed industrial heat recovery based cascaded hydrogen and ammonia synthesis system

Cited by 13 publications

References 21 publications

Energy, Exergy, Exergoeconomic, and Exergoenvironmental Study of an Innovative Solar-Wind-Biomass Driven Polygeneration System for Power, Heat and Ammonia Production

Energy, Exergy, Exergoeconomic, and Exergoenvironmental Study of an Innovative Solar-Wind-Biomass Driven Polygeneration System for Power, Heat and Ammonia Production

Applications of Multi-Objective Optimization to Industrial Processes: A Literature Review

Sol-Gel Processed Cobalt-Doped Methylated Silica Membranes Calcined under N2 Atmosphere: Microstructure and Hydrogen Perm-Selectivity

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