Hydrogen element flow and economic analyses of a coal direct chemical looping hydrogen generation process

Li, Guang; Chang, Yuxue; Liu, Tao; Yu, Zhongliang; Liu, Zheyu; Fan, Lei; Ma, Shuqi; Weng, Yujing; Zhang, Yulong

doi:10.1016/j.energy.2020.118243

Cited by 28 publications

(7 citation statements)

References 37 publications

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“…1 . Hydrogen generation via chemical looping exhibits numerous advantages regarding highly pure hydrogen production, 16 inherent CO 2 separation, 17 feasible to process scale, 18 etc . However, the development of highly active and stable oxygen carriers resides in a technical bottleneck for the scale-up of this technology.…”

Section: Introductionmentioning

confidence: 99%

Effect of support on hydrogen generation over iron oxides in the chemical looping process

Gao

Niu

et al. 2021

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

Effect of support on hydrogen generation over iron oxides in the chemical looping process

Gao

Niu

et al. 2021

RSC Adv.

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“…The total capital investment (TCI) was calculated using the values of the price of the equipment, land, piping, electrical installations, instrumentation, buildings, services facilities, yard improvements, engineering and supervision, construction expenses, legal expenses, contractors' fee, contingency, working capital investment and start-up investment reported by Contreras et al [9] using the methodology proposed by Peters et al [14], as well as the total product cost (TPC). Besides, AFC is calculated using Equation (1), in which FCI 0 corresponds to the initial value of the depreciable fixed capital investment (FCI), and FCI s to the salvage value of the FCI [15,16]. In Equation (2), represented by θ i , it is the ratio between the quantity of product i obtained per unit of raw material.…”

Section: Technoeconomic Analysismentioning

confidence: 99%

A Technoeconomic Resilience and Exergy Analysis Approach for the Evaluation of a Vaccine Production Plant in North-East Colombia

2022

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Influenza is an acute infection that can cause diabetes and heart and lung disease disorders. This illness affects more than 9 million people around the world. The best way to control the transmission of the virus is vaccination. Studies, performed in Santander, Colombia, have found the existence of this disease. Despite the above, there are no companies dedicated to producing influenza vaccines in Colombia. For the first time, exergetic analysis and technical-economic resilience are being performed as combined decision-making tools for the evaluation of an influenza vaccine production plant. The results of exergetic analysis showed that the global exergy efficiency of the process was estimated at 93%. The exergy of waste that resulted was 61.70 MJ/h. The most critical stage of the process is milling, representing 83% of the total destroyed exergy. On the other hand, the results of technoeconomic resilience showed that the break-even point capacity of the process is 2503.15 t/y, representing only 24% of the installed capacity of the plant. The analysis of the effect of raw materials cost on profits showed that the process only resists a rise of 4% in the cost of raw materials, and higher values show economic losses. A value of 215,500 USD/t establishes a critical point for the normalized variable operating costs because higher values do not provide a return on investment.

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“…Chemical looping hydrogen (CLH) production, or hydrogen production combined with simultaneous CO 2 capture, is an emerging alternative technology that has attracted tremendous attention. − The CLH process is based on the circulation of an oxygen carrier (OC) between a fuel reactor (FR), a steam reactor (SR), and an air reactor (AR), as shown in Figure . The oxygen carrier as an intermediate is one of the key factors of this technology.…”

Section: Introductionmentioning

confidence: 99%

Redox Performance of Cu-Doped Fe₂O₃/Al₂O₃ as Oxygen Carriers for Chemical Looping Hydrogen Production

2020

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Chemical looping hydrogen (CLH) production, or hydrogen production combined with CO2 capture, is becoming an emerging alternative technology that has attracted much attention. Iron-based oxygen carriers were most widely used in CLH. In this study, bi-active component composite metal oxides with Cu-doped Fe2O3/Al2O3 were synthesized. The oxygen carriers were characterized using different methods such as X-ray diffraction (XRD), scanning electron microscopy (SEM), and Brunauer–Emmett–Teller (BET), and their redox and cycle properties in the CLH process were investigated. The results showed that copper doping enhanced the activities of iron-based oxygen carriers, but excessive copper would reduce their reactivity due to melting and agglomeration. Hydrogen temperature-programmed reduction (H2-TPR) analysis, fixed-bed experiments, and density functional theory (DFT) calculations all confirmed that Cu promoted the deep reduction of Fe2O3. Among them, the oxygen carrier doped with 1 wt % CuO was the most suitable material for CLH, where H2 yield was the highest and sustained in a high and stable level in multiple redox cycles.

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Hydrogen element flow and economic analyses of a coal direct chemical looping hydrogen generation process

Cited by 28 publications

References 37 publications

Effect of support on hydrogen generation over iron oxides in the chemical looping process

Effect of support on hydrogen generation over iron oxides in the chemical looping process

A Technoeconomic Resilience and Exergy Analysis Approach for the Evaluation of a Vaccine Production Plant in North-East Colombia

Redox Performance of Cu-Doped Fe₂O₃/Al₂O₃ as Oxygen Carriers for Chemical Looping Hydrogen Production

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Hydrogen element flow and economic analyses of a coal direct chemical looping hydrogen generation process

Cited by 28 publications

References 37 publications

Effect of support on hydrogen generation over iron oxides in the chemical looping process

Effect of support on hydrogen generation over iron oxides in the chemical looping process

A Technoeconomic Resilience and Exergy Analysis Approach for the Evaluation of a Vaccine Production Plant in North-East Colombia

Redox Performance of Cu-Doped Fe2O3/Al2O3 as Oxygen Carriers for Chemical Looping Hydrogen Production

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Redox Performance of Cu-Doped Fe₂O₃/Al₂O₃ as Oxygen Carriers for Chemical Looping Hydrogen Production