The Effect of Temperature-Pressure Conditions on the RDF Gasification in the Atmosphere of Steam and Carbon Dioxide

This research aimed to assess the process conditions, temperature and pressure, on the gasification of alternative refuse-derived fuel (RDF) in the atmosphere of steam and carbon dioxide on a laboratory scale using a fixed bed reactor. For this reason, the selected RDF were analysed, including proximate and ultimate analysis, mercury content and ash composition. After that, isothermal gasification measurements using the thermovolumetric method were performed under various temperatures (700, 750, 800, 900 °C) and pressures (0.5, 1, 1.5 MPa), using steam and carbon dioxide as gasifying agents. The obtained results showed that in the entire analysed range, the increase in temperature positively affect both the steam and CO2 gasification of RDF. The formation rates of main components (H2 and/or CO) of the resulting gas, as well as yields of gas components and maximum carbon conversion degrees increase. However, this positive effect was the greater, the lower the process pressure was. In turn, the effect of pressure was more complex. In the case of RDF steam gasification, an increase in pressure had a negative effect on the process, while when using carbon dioxide as a gasifying agent, an improvement of most analysed parameters was observed; however, only at low temperatures, 700–750 °C.

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Enhanced Yield of Hydrogen From Wastes Using High Temperature Steam Gasification

Journal of Energy Resources Technology ◽

10.1115/1.2134733 ◽

2005 ◽

Vol 128 (3) ◽

pp. 179-185 ◽

Cited By ~ 35

Author(s):

W. Jangsawang ◽

A. Klimanek ◽

Ashwani K. Gupta

Keyword(s):

Carbon Monoxide ◽

Fixed Bed ◽

Calculated Data ◽

Steam Gasification ◽

Fixed Bed Reactor ◽

Effect Of Temperature ◽

Gas Composition ◽

Wood Pellets ◽

Feed Composition ◽

High Yields

Equilibrium calculations using the element potential method have been used to determine optimum conditions for the gasification of wood pellets and to understand the limitations and influence of preheated gasifying agent on the product gas composition. The calculations were carried out under isobaric (1 atm) and isothermal conditions using cellulose as the waste fuel. For each isothermal case results were obtained for the effect of feed gas composition. Various mixtures of steam/cellulose [mol/mol] and oxygen/steam [mol/mol] were examined to determine conditions for high yields of H2 and CO at a given temperature. The yield of hydrogen and carbon monoxide with different input feed composition and temperature of the process are therefore considered. The results showed strong effect of temperature on hydrogen and carbon monoxide yield in the gasified product stream. High temperatures resulted in high yields of hydrogen. Pure steam resulted in higher yields of hydrogen than steam-air gasifying agent. The experimental results using a fixed bed reactor showed good trends with the calculated data. These results assist in the design and development of enhanced hydrogen production from steam gasification of wastes.

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Effect of process conditions on the product distribution of Fischer-Tropsch synthesis over an industrial cobalt-based catalyst using a fixed-bed reactor

Applied Catalysis A General ◽

10.1016/j.apcata.2020.117630 ◽

2020 ◽

Vol 601 ◽

pp. 117630 ◽

Cited By ~ 1

Author(s):

Congcong Niu ◽

Ming Xia ◽

Congbiao Chen ◽

Zhongyi Ma ◽

Litao Jia ◽

...

Keyword(s):

Fixed Bed ◽

Product Distribution ◽

Tropsch Synthesis ◽

Fixed Bed Reactor ◽

Process Conditions ◽

Fischer Tropsch ◽

Fischer Tropsch Synthesis

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Catalytic steam gasification of pig compost for hydrogen-rich gas production in a fixed bed reactor

Bioresource Technology ◽

10.1016/j.biortech.2013.01.092 ◽

2013 ◽

Vol 133 ◽

pp. 127-133 ◽

Cited By ~ 24

Author(s):

Jingbo Wang ◽

Bo Xiao ◽

Shiming Liu ◽

Zhiquan Hu ◽

Piwen He ◽

...

Keyword(s):

Fixed Bed ◽

Gas Production ◽

Steam Gasification ◽

Fixed Bed Reactor

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Mathematical Modelling of Catalytic Fixed-Bed Reactor for Carbon Dioxide Reforming of Methane over Rh/Al2O3 Catalyst

BULLETIN OF CHEMICAL REACTION ENGINEERING AND CATALYSIS ◽

10.9767/bcrec.3.1-3.19.21-29 ◽

2010 ◽

Vol 3 (1-3) ◽

Author(s):

Nor Aishah Saidina Amin ◽

Istadi Istadi ◽

New Pei Yee

Keyword(s):

Carbon Dioxide ◽

Mathematical Modelling ◽

Fixed Bed ◽

Fixed Bed Reactor ◽

Carbon Dioxide Reforming ◽

Al2o3 Catalyst

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Steam gasification of selected energy crops in a fixed bed reactor

Renewable Energy ◽

10.1016/j.renene.2009.06.005 ◽

2010 ◽

Vol 35 (2) ◽

pp. 397-404 ◽

Cited By ~ 18

Author(s):

Adam Smoliński ◽

Krzysztof Stańczyk ◽

Natalia Howaniec

Keyword(s):

Fixed Bed ◽

Energy Crops ◽

Steam Gasification ◽

Fixed Bed Reactor

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Effect of Temperature on Plasma-Assisted Catalytic Cracking of Palm Oil into Biofuels

International Journal of Renewable Energy Development ◽

10.14710/ijred.9.1.107-112 ◽

2020 ◽

Vol 9 (1) ◽

pp. 107-112 ◽

Cited By ~ 2

Author(s):

I. Istadi ◽

Teguh Riyanto ◽

Luqman Buchori ◽

Didi Dwi Anggoro ◽

Roni Ade Saputra ◽

...

Keyword(s):

Palm Oil ◽

Catalytic Cracking ◽

Plasma Reactor ◽

Fixed Bed ◽

Liquid Product ◽

Fixed Bed Reactor ◽

Effect Of Temperature ◽

Catalytic Reactor ◽

Catalytic Role ◽

Reactor Temperature

Plasma-assisted catalytic cracking is an attractive method for producing biofuels from vegetable oil. This paper studied the effect of reactor temperature on the performance of plasma-assisted catalytic cracking of palm oil into biofuels. The cracking process was conducted in a Dielectric Barrier Discharge (DBD)-type plasma reactor with the presence of spent RFCC catalyst. The reactor temperature was varied at 400, 450, and 500 ºC. The liquid fuel product was analyzed using a gas chromatography-mass spectrometry (GC-MS) to determine the compositions. Result showed that the presenceof plasma and catalytic role can enhance the reactor performance so that the selectivity of the short-chain hydrocarbon produced increases. The selectivity of gasoline, kerosene, and diesel range fuels over the plasma-catalytic reactor were 16.43%, 52.74% and 21.25%, respectively, while the selectivity of gasoline, kerosene and diesel range fuels over a conventional fixed bed reactor was 12.07%, 39.07%, and 45.11%, respectively. The increasing reactor temperature led to enhanced catalytic role of cracking reaction,particularly directing the reaction to the shorter hydrocarbon range. The reactor temperature dependence on the liquid product components distribution over the plasma-catalytic reactor was also studied. The aromatic and oxygenated compounds increased with the reactor temperature.©2020. CBIORE-IJRED. All rights reserved

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Optimal Design, Modeling and Simulation of an Ethanol Steam Reforming Reactor

International Journal of Chemical Reactor Engineering ◽

10.2202/1542-6580.2059 ◽

2009 ◽

Vol 7 (1) ◽

Cited By ~ 1

Author(s):

Luis E Arteaga ◽

Luis M Peralta ◽

Yannay Casas ◽

Daikenel Castro

Keyword(s):

Hydrogen Production ◽

Modeling And Simulation ◽

Design Patterns ◽

Plug Flow ◽

Fixed Bed ◽

Cell System ◽

Fixed Bed Reactor ◽

Effect Of Temperature ◽

Ethanol Conversion ◽

Renewable Hydrogen

The optimum design, modeling and simulation of a fixed bed multi-tube reformer for the renewable hydrogen production are carried out in the present paper. The analogies between plug flow model and a fixed bed reactor are used as design patterns. The steam reformer is designed to produce enough hydrogen to feed a 200kW fuel cell system (>2.19molH/s) and considering 85% of fuel utilization in the cell electrodes. The reactor prototype is optimized and then analyzed using a multiphysics and axisymmetric model, implemented on FEMLABM(R) where the differential mass balance by convection-diffusion and the energy balance for convection-conduction are solved. The temperature profile is controlled to maximize hydrogen production. The catalyst bed internal profiles and the effect of temperature on ethanol conversion and carbon monoxide production are discussed as well.

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Experimental Study of the Reforming of Methane with Carbon Dioxide over Coal Char

International Journal of Chemical Reactor Engineering ◽

10.2202/1542-6580.1629 ◽

2008 ◽

Vol 6 (1) ◽

Author(s):

Yanbing Li ◽

Rui Xiao ◽

Baosheng Jin ◽

Huiyan Zhang

Keyword(s):

Carbon Dioxide ◽

Flow Rate ◽

Fixed Bed ◽

Coke Oven ◽

Fixed Bed Reactor ◽

Internal Diameter ◽

Generation System ◽

Coke Oven Gas ◽

Surface Areas ◽

Conversion Of Methane

As one of the fundamental issues of the new poly-generation system on the basis of gasification gas and coke oven gas, carbon dioxide reforming of methane experiments have been performed over coal chars derived from different parent coals in a lab-scale fixed-bed reactor (internal diameter 12 mm, length 700 mm). The char derived from TongChuan coal exhibited higher activity than other samples employed under the same conditions. After the reforming reaction, the char samples were covered with different amounts of carbon deposition which resulted in the surface areas decrease. As the flow rate of feed gas increased from 200 ml/min to 600 ml/min over the Xuzhou char sample at 1050 degrees Celsius, the conversion of methane decreased from 52.7% to 17.5% and the H2 /CO dropped from 0.75 to 0.55. While maintaining the flow rate of CO2 at 20ml/min at 1050 degrees Celsius, the mole ratio of reactants CH4/CO2 was varied from 1 to 1.75 which led to the H2/CO ratio increase from 0.75 to 1.2.

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