Advancements in Development of Chemical-Looping Combustion: A Review

He, Fang; Li, Haibin; Zhao, Zengli

doi:10.1155/2009/710515

Cited by 127 publications

(129 citation statements)

References 89 publications

(107 reference statements)

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“…In the same year, Hossain and de Lasa [99] reviewed the progress reached in the development of oxygen-carrier materials. Later, the applications of Chemical-Looping technologies for fossil energy conversion were briefly overviewed by Fan and Li [19], and Fang et al [52]. A deeper description of Chemical-Looping technologies has been done recently by Fan [20] and by Brandvoll [100].…”

Section: Process Overview Of Chemical Looping Cycles For Co 2 Capturementioning

confidence: 99%

Progress in Chemical-Looping Combustion and Reforming technologies

Adánez

Abad

Garcı́a-Labiano

et al. 2012

Progress in Energy and Combustion Science

1,959

1,614

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This work is a comprehensive review of the Chemical-Looping Combustion (CLC) and Chemical-Looping Reforming (CLR) processes reporting the main advances in these technologies up to 2010. These processes are based on the transfer of the oxygen from air to the fuel by means of a solid oxygen-carrier avoiding direct contact between fuel and air for different final purposes. CLC has arisen during last years as a very promising combustion technology for power plants and industrial applications with inherent CO 2 capture which avoids the energetic penalty present in other competing technologies.CLR uses the chemical looping cycles for H 2 production with additional advantages if CO 2 capture is also considered.The review compiles the main milestones reached during last years in the development of these technologies regarding the use of gaseous or solid fuels, the oxygen-carrier development, the continuous operation experience, and modelling at several scales. Up to 2010, more than 700 different materials based on Ni, Cu, Fe, Mn, Co, as well as other mixed oxides and low cost materials, have been compiled. Especial emphasis has been done in those oxygen-carriers tested under continuous operation in Chemical-Looping 2 prototypes. The total time of operational experience (≈ 3500 h) in different CLC units in the size range 0.3-120 kW th , has allowed to demonstrate the technology and to gain in maturity. To help in the design, optimization, and scale-up of the CLC process, modelling work is also reviewed. Different levels of modelling have been accomplished, including fundamentals of the gas-solid reactions in the oxygen-carriers, modelling of the air-and fuel-reactors, and integration of the CLC systems in the power plant. Considering the great advances reached up to date in a very short period of time, it can be said that CLC and CLR are very promising technologies within the framework of the CO 2 capture options.

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Section: Process Overview Of Chemical Looping Cycles For Co 2 Capturementioning

confidence: 99%

Progress in Chemical-Looping Combustion and Reforming technologies

Adánez

Abad

Garcı́a-Labiano

et al. 2012

Progress in Energy and Combustion Science

1,959

1,614

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“…Overviews of developments of the different fields within CLC have been made by [1], Hossain and De Lasa (2008) [2], Fang et al (2009) [3] and Lyngfelt (2011) [4,5].…”

Section: Armentioning

confidence: 99%

“…One method of rating the gas conversion of carbonic combustion processes is through the CO 2 gas yield, see equation (3). A similar expression is used for the H 2 O yield of hydrogen combustion, see equation (4).…”

Section: Data Evaluationmentioning

confidence: 99%

Testing of minerals and industrial by-products as oxygen carriers for chemical-looping combustion in a circulating fluidized-bed 300W laboratory reactor

Moldenhauer

Rydén

Lyngfelt

2012

Fuel

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Chemical-looping combustion (CLC) is a promising technology for future energy production with inherent CO 2 separation. One approach is to use minerals or industrial by-products as oxygen carriers to reduce the costs of the process. This study focuses on the investigation of two iron-based oxygen carriers, which were examined under continuous operation in a 300 W laboratory reactor. Ilmenite is an iron-titanium oxide mineral, whereas iron oxide scale (IOS) is obtained as a by-product from the rolling of sheet steel. Syngas was used as a fuel -pure and with steam addition to suppress the formation of solid carbon.During the experiments the variables reactor temperature, fuel flow and air flow were changed. Furthermore the effect of steam addition to the fuel was investigated. Particle properties were compared over the span of 85 h of continuous operation for ilmenite and 37 h for IOS. The analysis is based on gas measurements from the actual CLC operation, but also on scanning electron microscopy, X-ray powder diffractometry and measurements of BET surface area and density.With ilmenite oxygen carrier it was possible to achieve full conversion of syngas up to about 190 W th fuel equivalent at 900°C. With design fuel flow of about 300 W th at 900°C the combustion efficiency was above 98 %. There was almost no visible difference in reactivity of fresh activated particles and those used for 85 h. Combustion efficiency up to 99 % was achieved with IOS oxygen carrier at 900°C and about 100 W th fuel equivalent. At 300 W th fuel equivalent and 900°C a combustion efficiency of only 90 % could be reached.Both oxygen carriers were operated for tens of hours, which allowed for a better understanding of lifetime behavior and other basic characteristics. Whereas ilmenite oxygen-carrier particles were mostly stable over the course of 85 h of experiments, a large fraction of IOS oxygen-carrier particles had disintegrated to fines after only 37 h of experiments. The gathered data indicates that both oxygen carriers could be an alternative to synthesized particles, though with more drawbacks for IOS than for ilmenite.

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“…Chemical looping combustion (CLC) process has emerged as an attractive option to generate power with accomplishing the inherent CO 2 capture by the oxygen carrier which was carried out in the two interconnected reactors, an air reactor and a fuel reactor. During the operation in the CLC process, metal oxide (Me x O y ) as oxygen carrier provides the oxygen sources (oxygen capacity) for a combustion reaction, instead of air, thereby avoiding direct contact between fuel and air (Richter et al, 1983;Fang et al, 2009;Egmond and Hekkert, 2012). The fuels are converted to CO 2 /steam gases and produce high-grade heat to the steam engine for electricity generation (Ekstrom et al, 2008;Chiu and Ku, 2012).…”

Section: Introductionmentioning

confidence: 99%

Use of Spinel Nickel Aluminium Ferrite as Self-Supported Oxygen Carrier for Chemical Looping Hydrogen Generation Process

Kuo

Huang

Hsu

et al. 2015

Aerosol Air Qual. Res.

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Chemical looping hydrogen generation (CLHG), as a new technology involved in chemical looping combustion (CLC) process and steam-iron process, has attracted attention for clean energy generation and efficient energy conversion. A systematic investigation of spinel NiFeAlO 4 has led to characterization of a well-defined self-supported oxygen carrier which was prepared by solid state reaction. The redox behavior of NiFeAlO 4 shows the enhancement on the resistance to agglomeration exceeding previously reported CLC process using similar compositions including Fe 2 O 3 , NiO and NiFe 2 O 4 without any inert support. Moreover, the high CO 2 conversion and H 2 generation by NiFeAlO 4 oxygen carrier under a fixed-bed reactor (FxBR) were obtained. The reaction mechanism of NiFeAlO 4 subjected to the isothermal stepwise reduction in a sequence of varying durations by XRD was also demonstrated, which provided with a novel function of selfsupported and agglomeration-resistant characteristic in the oxygen carrier system.

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Advancements in Development of Chemical-Looping Combustion: A Review

Cited by 127 publications

References 89 publications

Progress in Chemical-Looping Combustion and Reforming technologies

Progress in Chemical-Looping Combustion and Reforming technologies

Testing of minerals and industrial by-products as oxygen carriers for chemical-looping combustion in a circulating fluidized-bed 300W laboratory reactor

Use of Spinel Nickel Aluminium Ferrite as Self-Supported Oxygen Carrier for Chemical Looping Hydrogen Generation Process

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