Sorption-enhanced Steam Methane Reforming for Combined CO2 Capture and Hydrogen Production: A State-of-the-Art Review

Soltani, Salman Masoudi; Lahiri, Abhishek; Bahzad, Husain; Clough, Peter T.; Gorbounov, Mikhail; Yan, Yongliang

doi:10.1016/j.ccst.2021.100003

Cited by 88 publications

(37 citation statements)

References 112 publications

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“…In fact, the optimization of the energy demand in the process and the development and implementation of robust heat and energy recovery systems have been recently highlighted as key existing challenges for viable H 2 production by sorption enhanced processes. 26 As mentioned above, the SR reaction of methane is highly endothermic, but the WGS and the carbonation reactions are exothermic. Thus, the heat generated by the carbonation and WGS reactions balances the heat demand for reforming, so the reactor where the SESR step occurs is thermally neutral or slightly exothermic (eq 4).…”

Section: ■ Introductionmentioning

confidence: 92%

“…The main challenge of the SESR processes is the heat required for sorbent regeneration. In fact, the optimization of the energy demand in the process and the development and implementation of robust heat and energy recovery systems have been recently highlighted as key existing challenges for viable H 2 production by sorption enhanced processes . As mentioned above, the SR reaction of methane is highly endothermic, but the WGS and the carbonation reactions are exothermic.…”

Section: Introductionmentioning

confidence: 99%

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Process Simulations of High-Purity and Renewable Clean H₂ Production by Sorption Enhanced Steam Reforming of Biogas

Capa

Yan

Rubiera

et al. 2023

ACS Sustainable Chem. Eng.

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Renewable clean H2 has a very promising potential for the decarbonization of energy systems. Sorption enhanced steam reforming (SESR) is a novel process that combines the steam reforming reaction and the simultaneous CO2 removal by a solid sorbent, such as CaO, which significantly enhances hydrogen generation, enabling high-purity H2 production. The CO2 sorption reaction (carbonation) is exothermic, but the sorbent regeneration by calcination is highly endothermic, which requires extra energy. Biogas is one of the available carbon-neutral renewable H2 production sources. It can be especially relevant for the energy integration of the SESR process since, due to the exothermic sorption reaction, the CO2 contained in the biogas provides extra heat to the system, which can help to balance the energy requirements of the process. This work studies different process configurations for the energy integration of the SESR process of biogas for high-purity renewable H2 production: (1) SESR with sorbent regeneration using a portion of the produced H2 (SESR+REG_H2), (2) SESR with sorbent regeneration using biogas (SESR+REG_BG), and (3) SESR with sorbent regeneration using biogas and adding a pressure swing adsorption (PSA) unit for hydrogen purification (SESR+REG_BG+PSA). When using biogas as fuel (Cases 2 and 3), these configurations were studied using air and oxy-fuel combustion atmospheres in the sorbent regeneration step, resulting in five case studies. A thermodynamic approach for process modeling can provide the optimal process operating conditions and configurations that maximize the energy efficiency of the process, which are the basis for subsequent optimization of the process at the practical level needed to scale up this technology. For this purpose, process simulations were performed using a steady-state plant model developed in Aspen Plus, incorporating a complex heat exchanger network (HEN) to optimize heat integration. A comprehensive parametric study assessed the effects of biogas composition, temperature, pressure, and steam to methane (S/CH4) ratio on the process performance represented by the selected key performance indicators, i.e., H2 purity, H2 yield, CH4 conversion, cold gas efficiency (CGE), net efficiency (NE), fuel consumption for the sorbent regeneration step, and CO2 capture efficiency. H2 with a purity of 98.5 vol % and a CGE of 75.7% with zero carbon emissions can be achieved. When adding a PSA unit, nearly 100% H2 purity and CO2 capture efficiency were achieved with a CGE of 77.3%. The use of oxy-fuel combustion during regeneration lowered the net efficiency of the process by 2.3% points (since it requires an air separation unit) but allowed the process to achieve negative carbon emissions.

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Section: ■ Introductionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Process Simulations of High-Purity and Renewable Clean H₂ Production by Sorption Enhanced Steam Reforming of Biogas

Capa

Yan

Rubiera

et al. 2023

ACS Sustainable Chem. Eng.

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“…Currently, most of the hydrogen demand is covered by production from fossil fuels, particularly via natural gas steam reforming, resulting in a considerable amount of carbon dioxide emissions and being denoted as grey hydrogen [ 2 ]. These CO 2 emissions can be captured for storage or utilization by any in situ or, most frequently, downstream process, thus identifying it as blue hydrogen [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Versatile and Resistant Electroless Pore-Plated Pd-Membranes for H2-Separation: Morphology and Performance of Internal Layers in PSS Tubes

et al. 2022

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Pd-membranes are interesting in multiple ultra-pure hydrogen production processes, although they can suffer inhibition by certain species or abrasion under fluidization conditions in membrane reactors, thus requiring additional protective layers to ensure long and stable operation. The ability to incorporate intermediate and palladium films with enough adherence on both external and internal surfaces of tubular porous supports becomes crucial to minimize their complexity and cost. This study addresses the incorporation of CeO2 and Pd films onto the internal side of PSS tubes for applications in which further protection could be required. The membranes so prepared, with a Pd-thickness around 12–15 μm, show an excellent mechanical resistance and similar performance to those prepared on the external surface. A good fit to Sieverts’ law with an H2-permeance of 4.571 × 10−3 mol m−2 s−1 Pa−0.5 at 400 °C, activation energy around 15.031 kJ mol−1, and complete ideal perm-selectivity was observed. The permeate fluxes reached in H2 mixtures with N2, He, or CO2 decreased with dilution and temperature due to the inherent concentration-polarization. The presence of CO in mixtures provoked a higher decrease because of a further inhibition effect. However, the original flux was completely recovered after feeding again with pure hydrogen, maintaining stable operation for at least 1000 h.

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“…In view of environmental protection, the effective utilization of these two compounds is of global concern 4–6 . Fortunately, chemical looping provides a new framework to realize CO 2 reduction and CH 4 utilization with low exergy penalty and low economic cost 7–10 . In a chemical looping process, CO 2 and CH 4 can be converted into valuable chemicals through the cyclic reaction and regeneration of a looping mediator.…”

Section: Introductionmentioning

confidence: 99%

“…Nickel on the other hand possesses high reactivity to CH 4 , but causes heavy carbon deposition. However, joining these two materials for chemical looping shows potential to achieve high activity and stability 10,20–23 …”

Section: Introductionmentioning

confidence: 99%

Separate H₂ and CO production from CH₄‐CO₂ cycling of Fe‐Ni

Jin

Srinath²,

Poelman³

et al. 2022

AIChE Journal

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CH 4 -CO 2 chemical looping is proposed for separate H 2 and CO production using nanostructured Fe-Ni looping materials. The product streams are obtained by first feeding CH 4 , which decomposes to H 2 and carbon. The latter acts as reductant for the subsequent CO 2 feed, which together with Fe re-oxidation yields CO. After 25 CH 4 -CO 2 cycles, 10Fe5Ni@Zr has a higher H 2 space-time yield than 10Fe0Ni@Zr (20 mmol s À1 kg À1FeþNi vs. 15 mmol s À1 kg À1 FeþNi ), a 2.6 times higher CO yield (57 mmol s À1 kg À1 FeþNi ) and lower deactivation. This improvement has two reasons: (i) CH 4 activation over Ni leading to cracking, (ii) product hydrogen causing deeper FeO reduction. Deactivation follows from accumulated carbon, non-reactive for CO 2 .On Ni and Fe sites, carbon can be removed by lattice oxygen or CO 2 , yielding more CO compared to the theoretical value for Fe oxidation. However, carbon that migrates away from the metals requires oxygen for removal, which restores the activity of the Ni-containing samples.carbon deposit, CH 4 -CO 2 redox cycling, chemical looping, CO 2 reduction, stability | INTRODUCTIONCarbon dioxide (CO 2 ) and methane (CH 4 ) are two common greenhouse gases leading to climate change. [1][2][3] In view of environmental protection, the effective utilization of these two compounds is of global concern. [4][5][6] Fortunately, chemical looping provides a new framework to realize CO 2 reduction and CH 4 utilization with low exergy penalty and low economic cost. [7][8][9][10] In a chemical looping process, CO 2 and CH 4 can be converted into valuable chemicals through the cyclic reaction and regeneration of a looping mediator. For

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Sorption-enhanced Steam Methane Reforming for Combined CO2 Capture and Hydrogen Production: A State-of-the-Art Review

Cited by 88 publications

References 112 publications

Process Simulations of High-Purity and Renewable Clean H₂ Production by Sorption Enhanced Steam Reforming of Biogas

Process Simulations of High-Purity and Renewable Clean H₂ Production by Sorption Enhanced Steam Reforming of Biogas

Versatile and Resistant Electroless Pore-Plated Pd-Membranes for H2-Separation: Morphology and Performance of Internal Layers in PSS Tubes

Separate H₂ and CO production from CH₄‐CO₂ cycling of Fe‐Ni

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Sorption-enhanced Steam Methane Reforming for Combined CO2 Capture and Hydrogen Production: A State-of-the-Art Review

Cited by 88 publications

References 112 publications

Process Simulations of High-Purity and Renewable Clean H2 Production by Sorption Enhanced Steam Reforming of Biogas

Process Simulations of High-Purity and Renewable Clean H2 Production by Sorption Enhanced Steam Reforming of Biogas

Versatile and Resistant Electroless Pore-Plated Pd-Membranes for H2-Separation: Morphology and Performance of Internal Layers in PSS Tubes

Separate H2 and CO production from CH4‐CO2 cycling of Fe‐Ni

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Process Simulations of High-Purity and Renewable Clean H₂ Production by Sorption Enhanced Steam Reforming of Biogas

Process Simulations of High-Purity and Renewable Clean H₂ Production by Sorption Enhanced Steam Reforming of Biogas

Separate H₂ and CO production from CH₄‐CO₂ cycling of Fe‐Ni