scholarly journals Regenerable Sorbents for High‐Temperature Desulfurization of Syngas from Biomass Gasification

2021 ◽  
Author(s):  
Jianyu Ma ◽  
Mehdi Mahmoodinia ◽  
Kumar R. Rout ◽  
Edd A. Blekkan
Keyword(s):  
High Temperature ◽  
Biomass Gasification

scholarly journals Bi-Functional Catalyst/Sorbent for a H2-Rich Gas from Biomass Gasification

Processes ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 1249
Author(s):  
Francesca Micheli ◽  
Enrica Mattucci ◽  
Claire Courson ◽  
Katia Gallucci
Keyword(s):  
High Temperature ◽  
Functional Materials ◽  
Active Phase ◽  
Biomass Gasification ◽  
X Ray Diffraction ◽  
Solid Sorbents ◽  
Co2 Sorbent ◽  
Mixing Method ◽  
Temperature Programmed ◽  
Sorption Study

The aim of this work is to identify the effect of the CaO phase as a CO2 sorbent and mayenite (Ca12Al14O33) as a stabilizing phase in a bi-functional material for CO2 capture in biomass syngas conditioning and cleaning at high temperature. The effect of different CaO weight contents is studied (0, 56, 85, 100 wt%) in sorbents synthesized by the wet mixing method. These high temperature solid sorbents are upgraded to bi-functional compounds by the addition of 3 or 6 wt% of nickel chosen as the metal active phase. N2 adsorption, X-ray diffraction, scanning electronic microscopy, temperature-programmed reduction analyses and CO2 sorption study were performed to characterize structural, textural, reducibility and sorption properties of bi-functional materials. Finally, sorption-enhanced reforming of toluene (chosen as tar model), of methane then of methane and toluene with bi-functional compounds were performed to study the best material to improve H2 content in a syngas, provided by steam biomass gasification. If the catalytic activity on the sorption enhanced reforming of methane exhibits a fast fall-down after 10–15 min of experimental test, the reforming of toluene reaches a constant conversion of 99.9% by using bi-functional materials.

Simulation of High Temperature Air – Steam Biomass Gasification in a Downdraft Gasifier Using ASPEN PLUS

2012 ◽  
Vol 267 ◽  
pp. 57-63
Author(s):  
Worapot Ngamchompoo ◽  
Kittichai Triratanasirichai
Keyword(s):  
High Temperature ◽  
Process Model ◽  
Waste Heat ◽  
Aspen Plus ◽  
Biomass Gasification ◽  
Pilot Scale ◽  
Producer Gas ◽  
Downdraft Gasifier ◽  
High Heating Value ◽  
Cold Gas Efficiency

A comprehensive process model is developed for high temperature air – steam biomass gasification in a downdraft gasifier using the ASPEN PLUS simulator. The simulation results are compared with the experimental data obtained through pilot scale downdraft gasifier. In this study, the model is used to investigate the effects of gasifying agent preheating, equivalence ratio (ER), and steam/biomass (S/B) on producer gas composition, high heating value (HHV), and cold gas efficiency (CGE). Results indicate that H2 and CO contents have increased when gasifying agent preheating is used, while gasifying agent preheating has no effect with H2 and CO at high ER. At high level of S/B, the concentrations of H2 and CO are related with water-gas shift reaction in significant. HHV and CGE depend on the concentrations of H2 and CO in producer gas, which can increase by preheated gasifying agent. However, gasifying agent preheating should apply with waste heat from the process because there is no additional cost of energy price.

scholarly journals Optimization of the Three-stage Biomass Gasification Characteristics in High-temperature Entrained-flow Bed

BioResources ◽  
2014 ◽  
Vol 9 (2) ◽  
Author(s):  
Chao Chen ◽  
Chunjiang Yu ◽  
Jinsong Zhou ◽  
Yangyang Xiang ◽  
Zhongyang Luo
Keyword(s):  
High Temperature ◽  
Biomass Gasification ◽  
Entrained Flow

scholarly journals Simulation of biomass gasification in a novel high-temperature directly irradiated hybrid solar/combustion reactor

2019 ◽  
Author(s):  
Houssame Boujjat ◽  
Sylvain Rodat ◽  
Stéphane Abanades ◽  
Christian Perret
Keyword(s):  
High Temperature ◽  
Biomass Gasification ◽  
Combustion Reactor

Granular bed filtration of high temperature biomass gasification gas

2007 ◽  
Vol 144 (3) ◽  
pp. 668-672 ◽  
Author(s):  
Daniel Stanghelle ◽  
Torbjørn Slungaard ◽  
Otto K. Sønju
Keyword(s):  
High Temperature ◽  
Biomass Gasification ◽  
Granular Bed

Rapid High Temperature Solar Thermal Biomass Gasification in a Prototype Cavity Reactor

2010 ◽  
Vol 132 (1) ◽  
Author(s):  
Paul Lichty ◽  
Christopher Perkins ◽  
Bryan Woodruff ◽  
Carl Bingham ◽  
Alan Weimer
Keyword(s):  
High Temperature ◽  
Solar Energy ◽  
Gas Flow ◽  
Biomass Conversion ◽  
Biomass Gasification ◽  
Solar Furnace ◽  
Concentrated Solar Energy ◽  
Product Stream ◽  
Tar Reduction ◽  
Composition Ratios

High temperature biomass gasification has been performed in a prototype concentrated solar reactor. Gasification of biomass at high temperatures has many advantages compared with historical methods of producing fuels. Enhancements in overall conversion, product composition ratios, and tar reduction are achievable at temperatures greater than 1000°C. Furthermore, the utilization of concentrated solar energy to drive these reactions eliminates the need to consume a portion of the product stream for heating and some of the solar energy is stored as chemical energy in the product stream. Experiments to determine the effects of temperature, gas flow rate, and feed type were conducted at the high flux solar furnace at the National Renewable Energy Laboratory, Golden, CO. These experiments were conducted in a reflective cavity multitube prototype reactor. Biomass type was found to be the only significant factor within a 95% confidence interval. Biomass conversion as high as 68% was achieved on sun. Construction and design considerations of the prototype reactor are discussed as well as initial performance results.

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