An integrated process for hydrogen-rich gas production from cotton stalks: The simultaneous gasification of pyrolysis gases and char in an entrained flow bed reactor

Chen, Zhiyuan; Zhang, Suping; Chen, Zhenqi; Ding, Ding

doi:10.1016/j.biortech.2015.09.015

Cited by 16 publications

(9 citation statements)

References 34 publications

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“…The detected trend in this study agrees with the trend observed by Franco et al [29]. The influence of gas-char interaction on gaseous composition has been studied by Chen et al [34] and concluded that this process had a significant influence on enhancing the hydrogen content from Tyre char promotes the water gas shift reaction at higher temperature leading to a high concentration of H2. However, the increase in CO2 composition is not significant.…”

Section: Effects Of Char Ash On Tar Decompositionsupporting

confidence: 91%

“…However, the decrease was not significant, the increase of steam flow rate by about 70% led to a 20 % decrease in the amount of final tyre char recovered. Chen et al [34] reported a 6 % decrease in char yield when the S/B ratio was increased from 1 to 4. The char conversion rate can be better enhanced with a long reaction time.…”

Section: Effect Of Steam To Biomass Ratiomentioning

confidence: 99%

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Hydrogen-rich syngas production and tar removal from biomass gasification using sacrificial tyre pyrolysis char

2017

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8Carbonaceous materials have been proven to have a high catalytic activity for tar removal from 9 the syngas produced from biomass gasification. The simultaneous reforming and gasification of 10 pyrolysis gases and char could have a significant role in increasing the gas yield and decreasing 11 the tar in the product syngas. This study investigates the use of tyre char as a catalyst for H2-rich 12 syngas production and tar reduction during the pyrolysis-reforming of biomass using a two stage biomass:steam ratio on syngas quality showed that the H2:CO molar ratio was increased from 1.8 24(steam: biomass ratio; 1.82 g g -1 ) to 3 (steam: biomass ratio; 6 g g -1 ). 25

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Section: Effects Of Char Ash On Tar Decompositionsupporting

confidence: 91%

Section: Effect Of Steam To Biomass Ratiomentioning

confidence: 99%

Hydrogen-rich syngas production and tar removal from biomass gasification using sacrificial tyre pyrolysis char

2017

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“…H 2 production significantly increased from 4.4 (using the two-step pyrolysis-catalytic reforming process) to 7.6 wt %. Likewise, Chen et al 170 evaluated the production of H 2 -rich gas from cotton stalks on a commercial Ni/MgO catalyst in the mentioned integrated process, and H 2 production increased from 3.9 to 6.5 wt %, since the condensable gas and char is more efficiently used through simultaneous conversion.…”

Section: Application Of Metallic Catalysts In the Pyrolysis-reforming Processmentioning

confidence: 99%

Progress on Catalyst Development for the Steam Reforming of Biomass and Waste Plastics Pyrolysis Volatiles: A Review

et al. 2021

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In recent decades, the production of H 2 from biomass, waste plastics, and their mixtures has attracted increasing attention in the literature in order to overcome the environmental problems associated with global warming and CO 2 emissions caused by conventional H 2 production processes. In this regard, the strategy based on pyrolysis and in-line catalytic reforming allows for obtaining high H 2 production from a wide variety of feedstocks. In addition, it provides several advantages compared to other thermochemical routes such as steam gasification, making it suitable for its further industrial implementation. This review analyzes the fundamental aspects involving the process of pyrolysis-reforming of biomass and waste plastics. However, the optimum design of transition metal based reforming catalysts is the bottleneck in the development of the process and final H 2 production. Accordingly, this review focuses especially on the influence the catalytic materials (support, promoters, and active phase), synthesis methods, and pyrolysis-reforming conditions have on the process performance. The results reported in the literature for the steam reforming of the volatiles derived from biomass, plastic wastes, and biomass/plastics mixtures on different metal based catalysts have been compared and analyzed in terms of H 2 production.

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“…Thus, these characteristics of biomass fuel are connected with some complications in biomass thermal conversion such as in gasification. Previous studied [6][7], revealed that high oxygen compound in biomass lower the gasification productivities compare with less oxygen, for example coal. Thus, alteration the properties of biomass preceding gasification is necessary.…”

Section: Introductionmentioning

confidence: 99%

Influence of Torrefaction on Gasification of Torrefied Palm Kernel Shell

Ahmad¹,

Ishak²,

Ismail³

et al. 2018

Adv. sci. technol. eng. syst. j.

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In this study, torrefaction pretreatment on palm kernel shell (PKS) was investigated using fixed bed reactor. The PKS was torrefied at the temperatures of 210, 230, 250, 270 and 290 °C. The characteristics between untreated and torrefied PKS were compared. The results showed that, the mass and energy yield lessened, while the calorific value augmented with the increasing torrefaction temperature. Furthermore, with the rise of temperature, the oxygen composition, O/C ratio, oxygenated compounds and volatile matter of torrefied PKS decreased, but, the carbon and fixed carbon content increased. The composition of carbon in torrefied PKS was toward coal where equivalent calorific values was achieved. The gasification of torrefied PKS enhanced the product yield which produced higher gas, lower tar and char yield than the gasification of untreated PKS. Gasification of torrefied PKS increased the gas yield by 16.9 % than the untreated PKS. The tar and char yield of torrefied PKS decreased by 19.4 % and 25.9 %, respectively than the untreated PKS. Therefore, the torrefied PKS, by which their physical and chemical properties have been improved through torrefaction pretreatment is more suitable to be used in gasification and co-gasification as their influences are significant than the untreated PKS.

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An integrated process for hydrogen-rich gas production from cotton stalks: The simultaneous gasification of pyrolysis gases and char in an entrained flow bed reactor

Cited by 16 publications

References 34 publications

Hydrogen-rich syngas production and tar removal from biomass gasification using sacrificial tyre pyrolysis char

Hydrogen-rich syngas production and tar removal from biomass gasification using sacrificial tyre pyrolysis char

Progress on Catalyst Development for the Steam Reforming of Biomass and Waste Plastics Pyrolysis Volatiles: A Review

Influence of Torrefaction on Gasification of Torrefied Palm Kernel Shell

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