Effect of CaO hydration and carbonation on the hydrogen production from sorption enhanced water gas shift reaction

Li, Zhenshan; Liu, Yang; Cai, Ningsheng

doi:10.1016/j.ijhydene.2012.04.160

Cited by 29 publications

(14 citation statements)

References 33 publications

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“…Synthesis of sintering-resistant calcium based sorbent is another strategy to enhance the performance during multi-cycle applications of CaO-based sorbents. Several synthesis methods have been tried effectively so far, such as doping with other metal salts, the utilization of potentially sintering resistant calcium precursors and the dispersion of CaO particles into inert matrix [48][49][50]. A synthetic CaO-based sorbent composed of 20 wt% Ca 9 A l6 O 18 and 80 wt% CaO showed excellent activity and stability over multiple carbonation-calcination cycles, and the random pore model (RPM) and the overlapping grain model (OGM) were also used to predict the carbonation behaviors of sorbents [51].…”

Section: Cao Based Sorbentsmentioning

confidence: 99%

Solid sorbents for in-situ CO 2 removal during sorption-enhanced steam reforming process: A review

Dou

Wang

Song

et al. 2016

Renewable and Sustainable Energy Reviews

194

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Section: Cao Based Sorbentsmentioning

confidence: 99%

Solid sorbents for in-situ CO 2 removal during sorption-enhanced steam reforming process: A review

Dou

Wang

Song

et al. 2016

Renewable and Sustainable Energy Reviews

194

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“…[12][13][14][15][16] This technology appears promising not only for high-temperature CO 2 capture from flue gas, [17][18][19][20] but also for H 2 co-production. [21][22][23][24][25] In the calcium looping process, CaO derived from the calcium-based sorbent is repeatedly cycled between an adsorber and a desorber. In the adsorber operated at a temperature range of 650-700 8C, CaO absorbs CO 2 from the flue gas to form CaCO 3 (Equation (1)).…”

Section: Introductionmentioning

confidence: 99%

“…The calcium looping technology using calcium‐based sorbents such as limestone and dolomite to capture CO 2 , which relies on the reversible reaction of adsorption/desorption of CO 2 , has attracted extensive attention due to the low cost of the sorbent precursor, high CO 2 adsorption capacity, low energy penalty, and opportunity for integration with cement manufacture . This technology appears promising not only for high‐temperature CO 2 capture from flue gas, but also for H 2 co‐production . In the calcium looping process, CaO derived from the calcium‐based sorbent is repeatedly cycled between an adsorber and a desorber.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous CO₂/SO₂ adsorption performance of carbide slag in adsorption/desorption cycles

Wu¹,

Li²,

Zhao³

et al. 2015

Can J Chem Eng

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Simultaneous CO2/SO2 adsorption performance of CaO derived from carbide slag (an industrial waste product from a chlor‐alkali plant) in multiple adsorption/desorption cycles was investigated in a dual fixed‐bed reactor. The effects of adsorption duration, SO2 concentration, adsorption temperature, desorption conditions, and particle size on carbonation conversion, cumulative sulphation conversion, and total Ca utilization of the carbide slag over multiple cycles were discussed. SO2 presence appreciably impedes the cyclic CO2 adsorption capacity of the carbide slag. A longer adsorption duration causes a sharper drop in the carbonation conversion due to the adverse effect of SO2. The presence of SO2 intensifies the effect of adsorption temperature on the carbonation conversion of the carbide slag. The optimum adsorption temperature for cyclic simultaneous CO2/SO2 adsorption by the carbide slag is 700 °C. The high desorption temperature and CO2 concentration (950 °C, 0.9999 L/L CO2) are not beneficial to cyclic CO2/SO2 adsorption. Both the carbonation conversion and cumulative sulphation conversion of the carbide slag decrease with increasing sorbent particle size in the cycles. The compact CaSO4 product layer covers the surface of CaO derived from the carbide slag during the multiple cycles, which results in a sharp drop in the surface area and pore volume with the cycle number. Compared with limestone, the carbide slag exhibits higher SO2 adsorption capacity and similar CO2 adsorption capacity during the cyclic simultaneous CO2/SO2 adsorption.

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“…These results indicated the promoting effect of the MnSFMCH on coal gasification was significantly better than that of MnCH. This phenomenon can attribute to the presence of Ca sites in the MnSFMCH has a better catalytic effect on the WGS ) than MnCH 41,42 . This one could be found in the following SEM‐EDX analysis.…”

Section: Reults and Discussionmentioning

confidence: 64%

Development of inexpensive perovskite Mn‐based oxygen carriers using the waste manganese sand for chemical looping gasification

Tian

et al. 2020

Int J Energy Res

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Summary Perovskite materials have been proven to be promising oxygen carriers in chemical looping gasification(CLG). To apply the perovskite oxygen carriers commercially, it is necessary to discover inexpensive, abundant reserves as well as environmentally friendly raw materials. In this study, the waste manganese sand filter material from a water treatment process was reused as a novel Mn source and combined with Ca(OH)2 to produce perovskite oxygen carrier. The performance of the perovskite oxygen carrier using the waste manganese sand filter material was compared with the perovskite oxygen carrier using the manganese ore at the same experiment conditions. The experiments were performed in a thermogravimetric analyzer (TG‐DSC) and a batch fluidized‐bed reactor. The results indicated that under the same oxygen carbon ratio, when the two oxygen carriers react with coal respectively, the Ca(OH)2/waste manganese sand filter material can release 1151 J/g more heat than the Ca(OH)2/manganese ore. Furthermore, the catalytic effect on the coal gasification of the Ca(OH)2/waste manganese sand filter material was shown to be the best when the carbon conversion between 0.4 and 0.8. Both Mn‐based pervoskite oxygen carriers released gaseous oxygen under an inert atmosphere at 950°C, whereas the Ca(OH)2/waste manganese sand filter material showed higher gaseous oxygen release rate. Cyclic redox tests of the two Mn‐based perovskite oxygen carriers over 20 cycles showed that the Ca(OH)2/waste manganese sand filter material behaved steadily with a higher syngas yield and attrition resistance beingachieved. Therefore, the perovskite oxygen carriers produced from the waste manganese sand filter material could potentially be used as an inexpensive and promising oxygen carrier in the CLG process of coal.

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Effect of CaO hydration and carbonation on the hydrogen production from sorption enhanced water gas shift reaction

Cited by 29 publications

References 33 publications

Solid sorbents for in-situ CO 2 removal during sorption-enhanced steam reforming process: A review

Solid sorbents for in-situ CO 2 removal during sorption-enhanced steam reforming process: A review

Simultaneous CO₂/SO₂ adsorption performance of carbide slag in adsorption/desorption cycles

Development of inexpensive perovskite Mn‐based oxygen carriers using the waste manganese sand for chemical looping gasification

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Effect of CaO hydration and carbonation on the hydrogen production from sorption enhanced water gas shift reaction

Cited by 29 publications

References 33 publications

Solid sorbents for in-situ CO 2 removal during sorption-enhanced steam reforming process: A review

Solid sorbents for in-situ CO 2 removal during sorption-enhanced steam reforming process: A review

Simultaneous CO2/SO2 adsorption performance of carbide slag in adsorption/desorption cycles

Development of inexpensive perovskite Mn‐based oxygen carriers using the waste manganese sand for chemical looping gasification

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Simultaneous CO₂/SO₂ adsorption performance of carbide slag in adsorption/desorption cycles