Effect of steam reforming on methane-fueled chemical looping combustion with Cu-based oxygen carrier

Zheng, Xiaoming; Su, Qingquan; Mi, Wanliang; Zhang, Peikun

doi:10.1016/j.ijhydene.2014.03.245

Cited by 21 publications

(18 citation statements)

References 47 publications

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“…The study on Cu/SiO 2 cycle life is based on a CLC process characterized with an added methane steam reforming step, which was presented in a previous study [18].…”

Section: Resultsmentioning

confidence: 99%

“…In the previous study [18], the minimum temperatures for complete reaction of Cu-based OC with H 2 and CO, in which the reduction utilization ratio of OC is over 90% at a reactant leakage concentration of 1%, were shown to be 300 and 225°C, respectively, and it was indicated that the reduction ability of CO is stronger than that of H 2 . In order to simplify the preparation of experimental gas, CO was replaced with H 2 in this study.…”

Section: Initial Performance Of Cu/siomentioning

confidence: 94%

“…In fact, from the perspectives of thermodynamics and kinetics, Reaction (8), which is a volume reducing reaction, can be promoted with the rise of the reaction pressure, or the increase of pressure drop. According to the CLC process as shown in the previous study [18], in reduction step, CH 4 in the product gas is led to the burner to provide combustion heat for the reforming reaction.…”

Section: Cycle Performance Of Cu/siomentioning

confidence: 99%

“…Accordingly, the authors [18] have presented a CLC process based on a fixed bed with adding a step of CH 4 steam reforming ahead of the reduction step, in which CH 4 is converted into H 2 and CO, whose reduction ability is much stronger than that of CH 4 , so the required reduction temperature is greatly reduced. Furthermore, based on this process, the authors [19] have conducted a study on the influence of the preparation method, inert support, Ni component, particle size and GHSV on the performance of Cu-based OC at the initial stage.…”

Section: Introductionmentioning

confidence: 99%

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Cycle performance of Cu-based oxygen carrier based on a chemical-looping combustion process

Zheng

Li-xin²,

Hao³

et al. 2016

Journal of Energy Chemistry

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“…The study on Cu/SiO 2 cycle life is based on a CLC process characterized with an added methane steam reforming step, which was presented in a previous study [18].…”

Section: Resultsmentioning

confidence: 99%

Section: Initial Performance Of Cu/siomentioning

confidence: 94%

Section: Cycle Performance Of Cu/siomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Cycle performance of Cu-based oxygen carrier based on a chemical-looping combustion process

Zheng

Li-xin²,

Hao³

et al. 2016

Journal of Energy Chemistry

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“…13 In the CLC process, as shown in Figure 2, natural gas is first converted into H 2 , CO, and CO 2 , with a small amount of CH 4 left in reforming reactor 1, and then the reformate is reacted with OC in CLC reactor 2. Meanwhile, air is led to CLC reactor 3 to react with the reduced OC.…”

Section: Resultsmentioning

confidence: 99%

Study of a Cu-Based Oxygen Carrier Based on a Chemical Looping Combustion Process

Zheng¹,

Su²,

Mi³

2015

Energy Fuels

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On the basis of a chemical looping combustion (CLC) process with adding a step of CH 4 steam reforming, the influences of the preparation method, inert support of SiO 2 or Al 2 O 3 , Ni component, particle size, and gas hourly space velocity (GHSV) on the redox performance of a Cu-based oxygen carrier (OC) were investigated. Results showed that the OC prepared with impregnation was able to react completely with H 2 in reduction or O 2 in oxidation but had a relatively low oxygen content ratio (R o ) because of the limitation from saturation loading of an active component. In contrast, the OC prepared with mechanical mixing had a high R o as well as high reactivity. The inert support was able to inhibit the sintering of the OC through dispersing the active component. Methanation and reverse CO−water shift reactions occurred in the reduction step, where metallic Cu played the role of a catalyst. The utilization ratios of the OC for both reduction and oxidation increased as the size of the active component particle decreased and mildly decreased with decreasing the size of the OC particle. However, as the size of the OC particle approached the size of the inert support particle, the performance of the OC dropped.

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Performance of Cu‐Fe‐based oxygen carrier in a CLC process based on fixed bed reactors

Tian

Li-xin²,

Ding³

et al. 2017

Greenhouse Gases

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To explore the application of chemical‐looping combustion (CLC) to the distributed medium‐ small‐scale hot water and steam gas‐fueled boilers, a CLC process based on two fixed bed reactors (FBRs) has been proposed. A Cu‐Fe‐based oxygen carrier (OC) was studied to meet the requirements for this process. Results showed that Cu30‐Fe50/Al20 was exothermic both in the reduction step and in the oxidation step, and showed a quite large operating temperature window of 600–900°C. At the lower temperature side, it showed good low temperature reactivity, and at the higher temperature side, it showed strong resistance to carbon deposition, agglomeration, and sintering. © 2017 Society of Chemical Industry and John Wiley & Sons, Ltd.

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Effect of steam reforming on methane-fueled chemical looping combustion with Cu-based oxygen carrier

Cited by 21 publications

References 47 publications

Cycle performance of Cu-based oxygen carrier based on a chemical-looping combustion process

Cycle performance of Cu-based oxygen carrier based on a chemical-looping combustion process

Study of a Cu-Based Oxygen Carrier Based on a Chemical Looping Combustion Process

Performance of Cu‐Fe‐based oxygen carrier in a CLC process based on fixed bed reactors

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