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Limited By:	Author = Fryda, Lydia E.;

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Experimental investigation of poultry litter gasification and co-gasification with beech wood in a bubbling fluidised bed reactor–effect of equivalence ratio on process performance and tar evolution (2019)

Katsarosa, Giannis; Pandey, Daya Shankar; Horvat, Alen; Almansa, Guadalupe Aranda; Fryd...

Katsarosa, Giannis; Pandey, Daya Shankar; Horvat, Alen; Almansa, Guadalupe Aranda; Fryda, Lydia E.; Leahy, James J.; Tassou, Savvas A.

Abstract:

The effect of equivalence ratio on gasification of poultry litter, blend of poultry litter with beech wood and beech wood alone, was experimentally studied in a lab-scale fluidised bed reactor. Lower calorific value decreased with equivalence ratio whereas carbon conversion efficiency revealed the opposite trend. Beech wood showed both the highest lower calorific value and carbon conversion efficiency, 4.96 MJ/m3 and 91.6% respectively. Total gas chromatography-detectable tar decreased with an increase in equivalence ratio. The reduction in total gas chromatography-detectable tar was more profound in the case of poultry litter (22%). Beech wood illustrated the highest amount of total gas chromatography-detectable tar, 7.52gtar/kgfeedstock-daf at the lowest equivalence ratio, due to the higher lignin content responsible for generation of polycyclic aromatic hydrocarbons. Agglomeration occurred while gasifying poultry litter at 750 °C and at the highest equivalence ratio (0.25), where...

http://hdl.handle.net/10344/8465

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Gasification of poultry litter in a lab-scale bubbling fluidised bed reactor: Impact of process parameters on gasifier performance and special focus on tar evolution (2019)

Katsaros, Giannis; Pandey, Daya Shankar; Horvat, Alen; Almansa, Guadalupe Aranda; Fryda...

Gasification of poultry litter in a lab-scale bubbling fluidised bed reactor: Impact of process parameters on gasifier performance and special focus on tar evolution (2019)

Katsaros, Giannis; Pandey, Daya Shankar; Horvat, Alen; Almansa, Guadalupe Aranda; Fryda, Lydia E.; Leahy, James J.; Tassou, Savvas A.

Abstract:

Poultry litter (PL) gasification was experimentally investigated using a lab-scale bubbling fluidised bed reactor. Characterisation of the gasification process was performed in terms of yields and compositions of both gas and tar, lower calorific value (LCV) of the product gas, cold gas efficiency (CGE) and carbon conversion efficiency (CCE). Experiments were carried out at different temperatures (700–750 C) and equivalence ratios (ERs). The effect of gasifier temperature at a constant ER of 0.21 shows that an increase in temperature improved the gasification process performance whilst the total tar content decreased, implying that higher temperature enhances the conversion of biomass to product gas. The total gas yield increased from 0.93 to 1.24 N2-free m3/kgfeedstock-daf, LCV increased from 3.38 MJ/m3 to 4.2 MJ/m3, while the tar content was reduced by 24% (5.6–4.25 gtar/kgfeedstock-daf). The detailed analyses of tar compositions reveal that styrene and xylenes were the most abun...

http://hdl.handle.net/10344/8437

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Poultry litter gasification in a fluidised bed reactor: effects of gasifying agent and limestone addition (2016)

Pandey, Daya Shankar; Kwapinska, Marzena; Gómez-Barea, Alberto; Horvat, Alen; Fryda, Ly...

Poultry litter gasification in a fluidised bed reactor: effects of gasifying agent and limestone addition (2016)

Pandey, Daya Shankar; Kwapinska, Marzena; Gómez-Barea, Alberto; Horvat, Alen; Fryda, Lydia E.; Rabou, Luc P. L. M.; Leahy, James J.; Kwapinski, Witold

Abstract:

This article corresponds to chapter 3 of Ph.D: Experimental and mathematical modelling of biowaste gasification in a bubbling fluidised bed reactor Pandey, Daya Shankar URI: http://hdl.handle.net/10344/7116
Air and air-steam gasification of poultry litter was experimentally studied in a laboratory scale bubbling fluidised bed gasifier at atmospheric pressure using silica sand as the bed material. The effects of equivalence ratio (ER), gasifier temperature, steam-to-biomass ratio (SBR) and addition of limestone blended with the poultry litter, on product gas species yields and process efficiency, are discussed. The optimum conditions (maximum carbon conversion, gas yield, heating value and cold gas efficiency) was achieved at an ER 0.25 and 800 ºC, using air (SBR = 0) and poultry litter blended with 8% w/w limestone, yielding a product gas with a lower heating value (LHV) of 4.52 MJ/Nm3 and an average product gas composition (dry basis) of H2: 10.78%, CO: 9.38%, CH4: 2.61 and CO2...

http://hdl.handle.net/10344/7117

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Tar yield and composition from poultry litter gasification in a fluidised bed reactor: effects of equivalence ratio, temperature and limestone addition (2019)

Horvat, Alen; Pandey, Daya Shankar; Kwapinska, Marzena; Mello, Barbara B; G´omez-Barea,...

Tar yield and composition from poultry litter gasification in a fluidised bed reactor: effects of equivalence ratio, temperature and limestone addition (2019)

Horvat, Alen; Pandey, Daya Shankar; Kwapinska, Marzena; Mello, Barbara B; G´omez-Barea, Alberto; Fryda, Lydia E.; Rabou, Luc P. L. M.; Kwapinski, Witold; Leahy, James J.

Abstract:

Air gasification of poultry litter was experimentally investigated in a laboratory scale bubbling fluidised bed gasifier. Gasification tests were conducted at atmospheric pressure using silica sand as the bed material. This paper examines the effect of the equivalence ratio (ER) in the range of 0.18–0.41, temperature between 700 and 800 C, and the addition of limestone blended with the poultry litter on the yield and composition of tar. An off-line solid phase adsorption method was employed in order to quantify tar compounds heavier than styrene, whereas lighter species such as benzene and toluene were measured by means of on-line micro gas chromatography. Total tar yields were in the range from 15.7 to 30.7 gtotal tar kgpoultry litter (dry and ash free basis) 1. These values are considered low with respect to the feedstocks with a higher organic fraction. It also needs to be noted that the yields of benzene and toluene were measured by on-line micro gas chromatography, a technique...

http://hdl.handle.net/10344/7837

Displaying Results 1 - 4 of 4 on page 1 of 1