Experimental Study About Pyrolysis of Sludge in a Fixed-Bed Reactor

An experimental study on co-pyrolysis of municipal solid waste and corn stalk was performed in a fixed-bed reactor under atmospheric pressure. The effect of different blending ratio on the pyrolysis product yields and compositions of the gaseous products was investigated. The results indicated that there exist synergetic effects in the co-pyrolysis of municipal solid waste and corn stalk. Under the different blending ratio conditions, the char and liquid yields were lower than the theoretical values calculated on pyrolysis of each individual municipal solid waste and corn stalk, and consequently the gas yields were higher. H2 and CH4 obtained co-pyrolysis at 800°C-900°C of 40% blending ratio conditions were higher than those of municipal solid waste and corn stalk alone.

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Evaluation of alkalinity spatial distribution in an up-flow fixed bed anaerobic digester

Water Science & Technology ◽

10.2166/wst.2017.612 ◽

2017 ◽

Vol 77 (4) ◽

pp. 948-959 ◽

Cited By ~ 1

Author(s):

Maha Hmissi ◽

Jérôme Harmand ◽

Victor Alcaraz-Gonzalez ◽

Hedi Shayeb

Keyword(s):

Experimental Data ◽

Experimental Study ◽

Spatial Distribution ◽

Volatile Fatty Acids ◽

Fixed Bed ◽

Control Process ◽

Fixed Bed Reactor ◽

Hydrodynamic Behavior ◽

Sampling Points ◽

Tequila Vinasses

Abstract In this paper, an experimental study upon alkalinity and hydrodynamic behavior in an anaerobic up-flow fixed bed reactor for the treatment of tequila vinasses is presented. Measurements of volatile fatty acids, pH, alkalinity and bicarbonate were obtained at three sampling points in the reactor in the axial axis. Then, the spatial distribution of alkalinity is studied and discussed. Moreover, for further control process purposes, a hydrodynamic model based on the use of two interconnected two-steps reduced AM2 type models is proposed and its parameters are identified using experimental data.

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Experimental Study on Biomass Char Combustion in O2/CO2 Atmosphere

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.694.136 ◽

2014 ◽

Vol 694 ◽

pp. 136-141 ◽

Cited By ~ 1

Author(s):

Jing Hong Lian ◽

Zi Fang Wang ◽

Wei Ji ◽

Guang Yang ◽

Lian Sheng Liu ◽

...

Keyword(s):

Experimental Study ◽

Fixed Bed ◽

Reactor System ◽

Fixed Bed Reactor ◽

No Emission ◽

Char Combustion ◽

Biomass Char

Experiments of biomass char combustion in 10%O2/90%CO2, 21%O2/79%CO2, 10%O2/90%N2 and 21%O2/79%N2 atmospheres were performed in the fixed-bed reactor system at the temperature of 800°C-1200°C. The results show that at the same temperature, NO emission is higher in O2/N2 atmosphere than that in O2/CO2 atmosphere. The higher the O2 concentration is, the higher the NO yield is. As the temperature rises, the NO yield rises at first and then decreases at the same O2 concentration and atmosphere.

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Experimental study on characteristics of hydrogen production from exhaust gas-fuel reforming in a catalytic fixed-bed reactor

Fuel ◽

10.1016/j.fuel.2020.120068 ◽

2021 ◽

Vol 290 ◽

pp. 120068

Author(s):

Yong Huang ◽

Zunhua Zhang ◽

Wenwen Wei ◽

Yanxiang Long ◽

Gesheng Li

Keyword(s):

Experimental Study ◽

Hydrogen Production ◽

Fixed Bed ◽

Fixed Bed Reactor ◽

Exhaust Gas ◽

Fuel Reforming ◽

Gas Fuel

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An Experimental Study on N2O Reduction Over Circulating Ashes of CFB Boilers

18th International Conference on Fluidized Bed Combustion ◽

10.1115/fbc2005-78047 ◽

2005 ◽

Cited By ~ 2

Author(s):

Hai Zhang ◽

Junfu Lu ◽

Keyu Chen ◽

Hairui Yang ◽

Guangxi Yue

Keyword(s):

Experimental Study ◽

Reaction Temperature ◽

Catalytic Effect ◽

Circulating Fluidized Bed ◽

Fixed Bed ◽

N2o Emission ◽

Fixed Bed Reactor ◽

Operational Parameters ◽

N2o Reduction ◽

O2 Concentration

An experimental study on nitrous oxide (N2O) reduction with circulating ashes of circulating fluidized bed (CFB) boilers was conducted for the development of an effective and economical technology to reduce the N2O emission from CFB boilers. The experiments were conducted with three kinds of circulating ashes, by using a fixed bed reactor with a diameter of 25mm, under various conditions of different operational temperatures, initial N2O concentrations, NH3 additions and O2 concentrations. The effects on N2O reduction were compared that with quartz sand. The experimental results showed that circulating ashes may possess remarkable catalytic effect on N2O reduction and the intensity of the catalytic effect strongly depends on operational parameters such as reaction temperature and O2 concentration. It was also found nitric oxide (NO) was produced during the process of N2O reduction and its concentration also strongly affected by reaction temperature and O2 concentration. The mechanisms of N2O reduction were discussed. The study confirmed the feasibility of injecting NH3 at the cyclone entrance of CFB boiler to form a selective catalytic reduction (SCR) process for N2O emission without using extra catalyst and provided some guidance to choose the operational parameters for N2O reduction with circulating ashes.

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