Supplied Oxygen Properties of NiO/NiAl2O4 in Chemical Looping Re-Forming of Biomass Pyrolysis Gas: The Influence of Synthesis Method

The chemical looping hydrogen (CLH) production was conducted in a fluidized bed reactor with the modified iron ore oxygen carriers (OCs) using simulated biomass pyrolysis gas (BPG) as fuel.

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Syngas production via chemical looping reforming biomass pyrolysis oil using NiO/dolomite as oxygen carrier, catalyst or sorbent

Energy Conversion and Management ◽

10.1016/j.enconman.2019.111835 ◽

2019 ◽

Vol 198 ◽

pp. 111835 ◽

Cited By ~ 7

Author(s):

Tingting Xu ◽

Bo Xiao ◽

Gift Gladson Moyo ◽

Fanghua Li ◽

Zhihua Chen ◽

...

Keyword(s):

Oxygen Carrier ◽

Chemical Looping ◽

Pyrolysis Oil ◽

Biomass Pyrolysis ◽

Syngas Production

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Study on the Mechanism of Gas Component Release for Biomass Pyrolysis

E3S Web of Conferences ◽

10.1051/e3sconf/201911803058 ◽

2019 ◽

Vol 118 ◽

pp. 03058

Author(s):

Hongtao Li ◽

Li Wang ◽

Yunguang Ji ◽

Shuqi Xue ◽

Zhenhui Wang

Keyword(s):

Biomass Energy ◽

Energy Utilization ◽

Thermochemical Conversion ◽

Release Mechanism ◽

Correction Coefficient ◽

Superposition Method ◽

Biomass Pyrolysis ◽

Yield Model ◽

Pyrolysis Gas ◽

Pyrolysis Products

Biomass energy utilization can solve the contradiction between economic development and energy and environment. Biomass pyrolysis technology is not only one of the thermochemical conversion technologies, but also the necessary stage of biomass gasification, which has become a hot academic research topic. Firstly, based on the pyrolysis experimental data of cellulose, hemicellulose and lignin, the analytical expressions of pyrolysis gas mass yields of different biomass components varying with temperature were obtained; then, the prediction of pyrolysis products was obtained by mass component superposition method, and the correction coefficient of biomass pyrolysis gas yield model was obtained based on the comparison between the average yield of biomass pyrolysis gas and the predicted value of pyrolysis products; finally, the gas release mechanism model of biomass pyrolysis was obtained. This study provides theoretical basis and technical support for the development of biomass utilization technology.

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Simulation of Hydrogen Production From Biomass Pyrolysis Gas by Secondary Steam Reforming

Volume 1: Aircraft Engine; Ceramics; Coal, Biomass and Alternative Fuels; Manufacturing, Materials and Metallurgy; Microturbines and Small Turbomachinery ◽

10.1115/gt2008-51045 ◽

2008 ◽

Author(s):

Leteng Lin ◽

Li Sun ◽

Xiaodong Zhang ◽

Xiaolu Yi ◽

Min Xu

Keyword(s):

Fuel Cells ◽

Hydrogen Production ◽

Gas Turbine ◽

Steam Reforming ◽

Water Gas Shift ◽

Hydrogen Yield ◽

Biomass Pyrolysis ◽

Pyrolysis Gas ◽

Secondary Steam ◽

Water Gas

Hydrogen is currently being widely regarded as a futural energy carrier to reduce carbon emissions and other NOx and SOx pollutants. Many researchers have proved that hydrogen can be efficiently used in solid oxide fuel cells -gas turbine system (SOFC-GT) and molten carbonate fuel cells-gas turbine system (MCFC-GT). Hydrogen production from biomass resources offers the advantage of providing a renewable energy carrier for extensive reduction of the CO2 emission. A secondary steam reforming process which consists of steam reforming of methane and water gas shift was proposed to further convert CH4, CO and other hydrocarbons in biomass pyrolysis gas for promoting hydrogen yield. According to respective reaction mechanism, simulating calculations were carried out in two reforming processes separately. With the favor of PRO/II, the effects of reaction temperature and steam to carbon ratio on hydrogen yield were discussed in details in the steam reforming of methane. A reasonable calculation method was established for simulating the water gas shift process in which the effects of temperature and steam to CO ratio was investigated. The simulation made good results in optimizing reaction conditions for two reformers and predicting the volume rate of all gas components. It is proved by simulation that hydrogen-rich gas with >68 mol% H2 could be produced, and the hydrogen yield could reach 48.18 mol H2/(Kg Biomass) and 45.85 mol/(Kg Biomass) respectively when using corn straw and rice husk as feedstock. The experiment data from a related reference was adopted to prove the reasonability of the simulation results which could show the feasibility of secondary steam reforming process, as well as provide good references for practical process operation.

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Catalytic tar decomposition of biomass pyrolysis gas with a combination of dolomite and silica

Biomass and Bioenergy ◽

10.1016/s0961-9534(02)00049-1 ◽

2002 ◽

Vol 23 (3) ◽

pp. 217-227 ◽

Cited By ~ 71

Author(s):

Carin Myrén ◽

Christina Hörnell ◽

Emilia Björnbom ◽

Krister Sjöström

Keyword(s):

Biomass Pyrolysis ◽

Pyrolysis Gas

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Study on Condensation of Biomass Pyrolysis Gas by Spray Bio-Droplets

ASME 2012 Third International Conference on Micro/Nanoscale Heat and Mass Transfer ◽

10.1115/mnhmt2012-75080 ◽

2012 ◽

Author(s):

Wen-long Cheng ◽

Kun Xie ◽

Wen-jing Shi

Keyword(s):

Mass Transfer ◽

Cooling Rate ◽

Heat And Mass Transfer ◽

Fuel Oil ◽

Rice Hull ◽

Biomass Feedstock ◽

Liquid Droplets ◽

Biomass Pyrolysis ◽

Pyrolysis Gas ◽

Bio Oil

Bio-oil, produced from biomass feedstock like rice hull, straw, wood flour and other biomass wastes by fast pyrolysis where the biomass feedstock is heated and pyrolized with a rapid rate and the pyrolysis gases produced are condensed rapidly, is an interesting potential alternative fuel oil. Cooling rate of the biomass pyrolysis gas is an important factor effecting the production of bio-oil. In order to speed up the cooling rate, the high temperature biomass pyrolysis gas is cooled and condensed by spray droplets of produced bio-oil with low temperature in this paper. It was assumed that the chemical reactions among the components of pyrolysis gas can be ignored, a theoretical model based on the classic film model and the Maxwell-Stefan equation was presented to simulate the heat and mass transfer characteristics of the spray condensation of biomass pyrolysis gas. The effects of the initial pyrolysis gas temperatures, the initial bio-oil droplets temperatures and diameters, and the flow ration of the gas and the liquid droplets on the heat and mass transfer between the gas and the liquid droplets were analyzed by the model.

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