Steam co-gasification of biomass and coal in decoupled reactors

Abulizi, Abulikemu; Xu, Shuai; Wang, Chao; Xiao, Yahui; Wang, Guangyong

doi:10.1016/j.fuproc.2015.06.046

Cited by 67 publications

(21 citation statements)

References 35 publications

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“…Highest tar contents of 10.58 g Nm −3 and 26.38 g/kg fuel were obtained from W80:CS20 blend and lowest of 4.47 g Nm −3 and 10.53 g/kg fuel from W20:CS80 blend. Tursun et al reported a similar tar formation trend during the co‐gasification of various blends of pine wood and coal at 800 °C.…”

Section: Resultsmentioning

confidence: 72%

Catalytic and noncatalytic gasification of wood–coconut shell blend under different operating conditions

Inayat

Sulaiman

Kurnia

et al. 2018

Env Prog and Sustain Energy

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The formation of tar during biomass gasification is a main barrier to establishing reliable gasification technologies. Different catalysts are being used for tar abatement from the biomass gasification. In this study, catalytic and noncatalytic cogasification of wood‐coconut shell blends was carried out in a downdraft gasifier. The effect of the operating parameters on syngas quality, performance of cogasification, and tar reduction was investigated. The biomass blending ratio (BR) was varied as W20:CS80, W50:CS50, and W80:CS20, equivalence ratio (ER) was varied from 0.19 to 0.35, gasification temperature from 700 to 900 °C and catalyst loading (CL) from 5 to 30%. Dolomite, limestone, and Portland cement were used as a catalyst. The results revealed that under noncatalytic conditions, the blend with higher proportion of coconut shells produces better syngas composition with higher HHV and lower tar content. The high ER reduced H2, tar formation, cold gas efficiency and gas yield. It also improved the carbonaceous gas species and carbon conversion efficiency. Increasing gasification temperature significantly improved the syngas quality, cogasification performance and reduced the tar content. The 30% CL significantly improved the gas composition content, gas yield, cold gas efficiency and reduced the tar content up to 52%. Better syngas quality and cogasification performance was possible with calcined cement catalyst whereas a reduction in tar content was observed in the presence of limestone. © 2018 American Institute of Chemical Engineers Environ Prog, 38: 688–698, 2019

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Section: Resultsmentioning

confidence: 72%

Catalytic and noncatalytic gasification of wood–coconut shell blend under different operating conditions

Inayat

Sulaiman

Kurnia

et al. 2018

Env Prog and Sustain Energy

View full text Add to dashboard Cite

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“…Xu et al 12 studied the pyrolysis characteristics of the liquefaction residue. [14][15][16] The ash component usually played a catalytic role in gasification. Jiang et al 13 reported that the presence of iron was favorable to the persistence of more catalysts in active forms during gasification by way of suppressing the vaporization of sodium and the formation of crystalline Na 2 CO 3 .…”

Section: Introductionmentioning

confidence: 99%

“…In most cases, co-utilization was conducive to the improvement of carbon conversion rate. [14][15][16] The ash component usually played a catalytic role in gasification. Wei et al 17,18 indicated that the addition of biomass ash had a catalytic effect on the pyrolysis and gasification of coal char.…”

Section: Introductionmentioning

confidence: 99%

A study on high‐temperature co‐gasification reactivity characteristics and kinetics analysis of Hami coal and its liquefaction residue

Guo

Huang

Gong

et al. 2019

Asia-Pacific J Chem Eng

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In this study, the rapid pyrolysis chars of Hami bituminous coal and its liquefaction residue were prepared using a high-frequency furnace. A thermogravimetric analyzer was used to investigate the gasification reactivity and determine the mixing ratio of coal and its liquefaction residue. In addition, a scanning electron microscope, a physisorption analyzer, and a laser raman spectrometer were used to characterize the physicochemical properties of samples. Furthermore, kinetics analysis using the isoconversional method was conducted. The results showed that the gasification reactivity was affected by gasification temperature, pore structure, and carbon structure. When the gasification temperature increased to 1300°C, the gasification reactivity of the liquefaction residue char was close to that of coal char. From the gasification reactivity point of view, the liquefaction residue could be utilized as a raw material in entrained-flow gasification. The mixing ratio of the raw coal to the liquefaction residue was preferably 2:1. The research on activation energy showed that the gasification process belonged to pore diffusion control in the range of temperatures investigated. Specifically, there was a synergistic effect between the coal char and the liquefaction residue char in co-gasification, which was beneficial to the gasification reaction. study on high-temperature cogasification reactivity characteristics and kinetics analysis of Hami coal and its liquefaction residue. Asia-Pac J Chem Eng. 2020;15:e2376. https://doi.

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“…It is important because reduction in heavier tar plays a more important role in benefitting downstream operations [8]. Yalkunjan Tursun et al (2016) has developed in a labscale external circulating radial-flow moving bed (ECRMB) gasification system for study steam co-gasification of pine sawdust and bituminous coal [9]. The system includes three decoupled reactors such as a gas-solid counter current moving bed pyrolyzer, a radial-flow moving bed gasifier and a riser-type combustor.…”

Section: Introductionmentioning

confidence: 99%

The Composition of Syngas and Biochar Produced by Gasifier from Viet Nam Rice Husk

Nguyen

Lanh

Hung

2017

International Journal on Advanced Science, Engineering and Information Technology

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Nowadays, biomass has become one of the renewable energy sources might be filled for the lack of energy in the world. Gasification of biomass in general and of rice husk in particularly has attracted many researchers in Viet Nam. The rice husk gasification experimental study has been done with the GEK 20 kW device which is developed by All Power Labs, USA. The air flow rate from 2 to 4 m 3 /h is applied in gasifier. A portable infra-red syngas analyzer is used for simultaneous measurement the concentrations of CO, CO 2 , CH 4 , H 2 and O 2 of the syngas and for calculation of the heating energy. The effect of air flow rate on temperature, syngas composition, and biochar is analysed and it indicates that the temperature in the combustion area and the content of hydrogen and carbon monoxide in the gas increase when the air-flow rate rises. In contrast, the yield of biochar is decreased.

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Steam co-gasification of biomass and coal in decoupled reactors

Cited by 67 publications

References 35 publications

Catalytic and noncatalytic gasification of wood–coconut shell blend under different operating conditions

Catalytic and noncatalytic gasification of wood–coconut shell blend under different operating conditions

A study on high‐temperature co‐gasification reactivity characteristics and kinetics analysis of Hami coal and its liquefaction residue

The Composition of Syngas and Biochar Produced by Gasifier from Viet Nam Rice Husk

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