An Experimental Investigation of Alkali Removal from Biomass Producer Gas Using a Fixed Bed of Solid Sorbent

2001 ◽  
Vol 40 (8) ◽  
pp. 1960-1967 ◽  
Author(s):  
Scott Q. Turn ◽  
Charles M. Kinoshita ◽  
Darren M. Ishimura ◽  
Ty T. Hiraki ◽  
Jiachun Zhou ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Fixed Bed ◽  
Producer Gas ◽  
Solid Sorbent ◽  
Alkali Removal

scholarly journals Experimental Investigation of Double Stage Air Intake in Throat-less Downdraft Biomass Gasifier

2018 ◽  
Vol 67 ◽  
pp. 02041 ◽  
Author(s):  
Hafif Dafiqurrohman ◽  
Adi Surjosatyo ◽  
Muhammad Barryl Anggriawan
Keyword(s):  
Experimental Investigation ◽  
Rice Husk ◽  
Heat Generation ◽  
Fixed Bed ◽  
Small Scale ◽  
Producer Gas ◽  
Air Intake ◽  
Secondary Air ◽  
Pass Through

Indonesia has a huge potential rice husk waste of 150 GJ/year, a third more than the overall potential of biomass in Indonesia of 470 GJ/year. Gasification of small-scale biomass fixed bed downdraft becomes one of the best solutions to become energy for power and heat generation. From studies that have been conducted abroad and from previous studies, the use of double stage air intake on the reactor proved effective in reducing tar because tar formed from the pyrolysis zone must pass through two zones below before then out with the gas producer. Implementation of secondary air intake at position Z = 38 cm right on the pyrolysis zone, obtained results at ER 0.25. With the same size, as much as 80.82% with tar content on the producer gas of 11.62 grams/Nm3. While at ER 0.23 figures found the highest gasification efficiencvby 33.41%.

Alkali removal with mineral sorbents – Part II: Fixed-bed experiments and model validation

2021 ◽  
Author(s):  
Florian Kerscher ◽  
Johannes Bolz ◽  
Isabella Stellwag ◽  
Viktor Handy ◽  
Ramona Bier ◽  
...  
Keyword(s):  
Model Validation ◽  
Fixed Bed ◽  
Alkali Removal

scholarly journals Performance testing of a downdraft biomass gasifier stove for cooking applications

2018 ◽  
Vol 204 ◽  
pp. 04011
Author(s):  
Woranuch Jangsawang
Keyword(s):  
Primary School ◽  
Thermal Efficiency ◽  
Fixed Bed ◽  
Performance Testing ◽  
Rural School ◽  
High Potential ◽  
Producer Gas ◽  
Biomass Fuels ◽  
Heating Value ◽  
Gas System

A down draft biomass gasifier stove with four steps of cleaning gas system was developed to produce the producer gas for replacing LPG for cooking applications in lunch project for the student in rural school area. This project has been implemented at Bangrakam primary school that located at Pitsanuloke Province, Thailand. The biomass fuels used are Mimosa wood twigs. The gasifier stove was developed based on down draft fixed bed gasifier with the maximum fuel capacity of fourteen kilograms. The performance testing of the biomass gasifier stove showed that the heating value of the producer gas is 4.12 MJ/Nm3 with the thermal efficiency in the percentage of 85.49. The results from this study imply that it has high potential to replace LPG with producer gas.

Experimental investigation of syngas composition variation along updraft fixed bed gasifier

2020 ◽  
Vol 221 ◽  
pp. 113116 ◽  
Author(s):  
Nadia Cerone ◽  
Francesco Zimbardi ◽  
Luca Contuzzi ◽  
Jakov Baleta ◽  
Damijan Cerinski ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Fixed Bed ◽  
Composition Variation

Operation of a Circulating Fluidised Bed Biomass Gasifier

2004 ◽  
Author(s):  
Guanyi Chen ◽  
Gang Li ◽  
Michel P. Glazer ◽  
Chunlei Zhang ◽  
J. Andries
Keyword(s):  
Large Scale ◽  
Fixed Bed ◽  
Calorific Value ◽  
Producer Gas ◽  
Fluidised Bed ◽  
Fuel Gas ◽  
Promising Alternative ◽  
Tar Cracking ◽  
Shift Reaction ◽  
Circulating Fluidised Bed

Energy generation from the use of biomass is gaining an increasing attention. Gasification of biomass at present, is widely accepted as a popular technical route to produce fuel gas for the application in boilers, engine, gas/micro turbine or fuel cell. Up to now, most of researchers have focused their attentions only on fixed-bed gasification and fluidised bed gasification under air-blown conditions. In that case, the producer gas is contaminated by high tar contents and particles which could lead to the corrosion and wear of blades of turbine. Furthermore, both the technologies, particularly fixed bed gasification, are not flexible for using multiple biomass-fuel types and also not feasible economically and environmentally for large scale application up to 10∼50 MWth. An innovative circulating fluidised bed concept has been considered in our laboratory for biomass gasification thereby overcoming these challenges. The concept combines and integrates partial oxidation, fast pyrolysis (with an instantaneous drying), gasification, and tar cracking, as well as a shift reaction, with the purpose of producing a high quality of gas, in terms of low tar level and particulates carried out in the producer gas, and overall emissions reduction associated with the combustion of producer gas. This paper describes our innovative concept and presents some experimental results. The results indicate that the gas yield can be above 1.80Nm3/kg with the calorific value of 4.5–5.0MJ/Nm3, and the fluctuation of the gas yield during the period of operation is 3.3%–3.5% for the temperature of 750–800 °C. In genera, the results achieved support our concept as a promising alternative for the gasifier coupled with micro/gas turbine to generate electricity.

scholarly journals A Comprehensive Literature Review of Thermochemical Conversion of Biomass for Syngas Production and Associated Challenge

2019 ◽  
Vol 38 (2) ◽  
pp. 495-512
Author(s):  
Ghulamullah Maitlo ◽  
Rasool Bux Mahar ◽  
Zulfiqar Ali Bhatti ◽  
Imran Nazir
Keyword(s):  
Fossil Fuels ◽  
Fixed Bed ◽  
Biomass Gasification ◽  
Gaseous Product ◽  
Gas Production ◽  
Thermochemical Conversion ◽  
Producer Gas ◽  
Syngas Production ◽  
Gasification Process

The interest in the thermochemical conversion of biomass for producer gas production since last decade has increased because of the growing attention to the application of sustainable energy resources. Application of biomass resources is a valid alternative to fossil fuels as it is a renewable energy source. The valuable gaseous product obtained through thermochemical conversion of organic material is syngas, whereas the solid product obtained is char. This review deals with the state of the art of biomass gasification technologies and the quality of syngas gathered through the application of different gasifiers along with the effect of different operating parameters on the quality of producer gas. Main steps in gasification process including drying, oxidation, pyrolysis and reduction effects on syngas production and quality are presented in this review. An overview of various types of gasifiers used in lignocellulosic biomass gasification processes, fixed bed and fluidized bed and entrained flow gasifiers are discussed. The effects of various process parameters such as particle size, steam and biomass ratio, equivalence ratio, effects of temperature, pressure and gasifying agents are discussed. Depending on the priorities of several researchers, the optimum value of different anticipated productivities in the gasification process comprising better quality syngas production improved lower heating value, higher syngas production, improved cold gas efficiency, carbon conversion efficiency, production of char and tar have been reviewed.

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