Thermo-Chemical Analysis of Biomass Gasification by Gibbs Free Energy Minimization Model-Part: II (Optimization of Biomass Feed and Steam to Biomass Ratio)

Sreejith, C. C.; Muraleedharan, C.; Arun, P.

doi:10.1080/15435075.2012.709203

Cited by 28 publications

(15 citation statements)

References 73 publications

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“…Even though LHV is decreased for steam only gasification with hike in SBR, the efficiencies are found to be increasing. This trend in efficiency variation is contradicting the previous equilibrium model [24] result. The energy efficiencies are much higher than (11-14%) exergy efficiencies due to the considerable difference in total exergy (both chemical and physical) and LHV of the gaseous mixture.…”

Section: Influence Of Gasification Temperaturecontrasting

confidence: 81%

“…For air-steam gasification in fluidized bed, both air and steam participate in the gasification and partial combustion reactions. The major reactions involved [24,35] are given in Table 2. Since CaO is present in the gasifier as a mixture either with the bed material or with the biomass, carbonation reaction (R 8 ) producing CaCO 3 is also included.…”

Section: Model Formulationmentioning

confidence: 99%

“…Equilibrium models are based on either Gibbs free energy minimization approach [24,25] or incorporating equilibrium constants [12,26] of the component chemical reactions. Considerable deviation of the simulation results of equilibrium models from experimental results is because of the lack of achieving equilibria and the assumption of uniformity in temperature inside the gasifier.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Air–steam gasification of biomass in fluidized bed with CO2 absorption: A kinetic model for performance prediction

Sreejith

Muraleedharan

Arun

2015

Fuel Processing Technology

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Section: Influence Of Gasification Temperaturecontrasting

confidence: 81%

Section: Model Formulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Air–steam gasification of biomass in fluidized bed with CO2 absorption: A kinetic model for performance prediction

Sreejith

Muraleedharan

Arun

2015

Fuel Processing Technology

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“…The produced biomass gas contains hydrogen (H 2 ), carbon monoxide (CO), and methane (CH 4 ) [47]. Thus, the biomass materials and biomass gas are flammable and the biomass gas has explosive characteristics.…”

Section: Methodsmentioning

confidence: 99%

Application of a Cloud Model-Set Pair Analysis in Hazard Assessment for Biomass Gasification Stations

Yan

2017

PLoS ONE

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Because a biomass gasification station includes various hazard factors, hazard assessment is needed and significant. In this article, the cloud model (CM) is employed to improve set pair analysis (SPA), and a novel hazard assessment method for a biomass gasification station is proposed based on the cloud model-set pair analysis (CM-SPA). In this method, cloud weight is proposed to be the weight of index. In contrast to the index weight of other methods, cloud weight is shown by cloud descriptors; hence, the randomness and fuzziness of cloud weight will make it effective to reflect the linguistic variables of experts. Then, the cloud connection degree (CCD) is proposed to replace the connection degree (CD); the calculation algorithm of CCD is also worked out. By utilizing the CCD, the hazard assessment results are shown by some normal clouds, and the normal clouds are reflected by cloud descriptors; meanwhile, the hazard grade is confirmed by analyzing the cloud descriptors. After that, two biomass gasification stations undergo hazard assessment via CM-SPA and AHP based SPA, respectively. The comparison of assessment results illustrates that the CM-SPA is suitable and effective for the hazard assessment of a biomass gasification station and that CM-SPA will make the assessment results more reasonable and scientific.

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“…The generated biogas contained the flammable gases hydrogen (H2), carbon monoxide (CO), and methane (CH4) with CO having a high poisonousness as well (Sreejith et al 2013). Hence, the risks of biomass gasification were fires, explosions, and poisoning.…”

Section: Confirmation and Classification Of Assessment Indicesmentioning

confidence: 99%

Hazard Assessment for Biomass Gasification Station Using General Set Pair Analysis

Yan

et al. 2016

BioResources

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aHazard assessment is critical for a biomass gasification station because it includes various hazardous factors. Set pair analysis (SPA) is a convenient and effective method for hazard assessment, but it has limitations, including (1) the inability to reflect the difference when the data belong to the same hazard grade and (2) the assessment results lack precision and accuracy. This study proposes an improved method designated as general set pair analysis (GSPA). Connection measure degree (CMD), which is based on the cosine function, as well as weighting deviation degree (WDD), relative membership degree (RMD), and comprehensive index (CI) were proposed in GSPA, and the algorithms were generated. The calculated results of these different methods can be utilized to overcome the shortcomings of SPA during hazard assessment. A case study of two biomass gasification stations in Shenyang City, Liaoning Province, Northeast China, was performed. The hazard assessment results of the GSPA were compared with those of SPA. The results showed that GSPA is a more effective, precise, and accurate method for hazard assessment of a biomass gasification station.

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Thermo-Chemical Analysis of Biomass Gasification by Gibbs Free Energy Minimization Model-Part: II (Optimization of Biomass Feed and Steam to Biomass Ratio)

Cited by 28 publications

References 73 publications

Air–steam gasification of biomass in fluidized bed with CO2 absorption: A kinetic model for performance prediction

Air–steam gasification of biomass in fluidized bed with CO2 absorption: A kinetic model for performance prediction

Application of a Cloud Model-Set Pair Analysis in Hazard Assessment for Biomass Gasification Stations

Hazard Assessment for Biomass Gasification Station Using General Set Pair Analysis

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