Experimental study of biomass gasification with oxygen-enriched air in fluidized bed gasifier

Liu, Lingqin; Huang, Yaji; Cao, Jin; Liu, Changqi; Dong, Lu; Xu, Ligang; Zha, Jianrui

doi:10.1016/j.scitotenv.2018.01.016

Cited by 106 publications

(30 citation statements)

References 18 publications

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“…gasifier due to lower nitrogen amount, which reduces syngas thermal energy losses by heating of nitrogen. In Liu et al (2018) carried out experimental research on a two-stage fluidized bed gasifier using oxygen-enriched air as gasifying agent and rice straw as fuel. The oxygen concentrations of the gasifying agent were from 21 up to 45%.…”

Section: Introductionmentioning

confidence: 99%

Experimental Gasification of Coffee Husk Using Pure Oxygen-Steam Blends

2019

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This work discusses results on temperature profile, syngas composition, High Heating Value, and efficiency of a Coffee Husk counter-current fixed-bed gasification process, in which oxygen-steam blends were used as an oxidizing agent. The experimentation was carried out for various Equivalence Ratios (ER) and Steam-Fuel Ratios (SF), whose ranges were [1.6-5.6] and [0.4-0.8], respectively. The results show that increased steam (higher steam fuel ratios) improves the H 2 /CO molar ratio i.e., for a constant ER = 3.7 and SF at 0.4, 0.6, and 0.8, the H 2 /CO ratio was 1.2, 1.4, and 1.8, respectively. Also, the addition of steam tends to increase the syngas Higher Heating Value, which ranged between 7,714 kJ/m 3 at ER = 1.6 and SF = 0.4 and 8,841 kJ/m 3 at ER = 3.2 and SF = 0.8. On the other hand, increased ER (lower oxygen) decreases the Net Cold Gasification Efficiency (CGE NET) which was between 53% at ER = 5.6 and SF = 0.6 and 82% at ER = 1.6 and SF = 0.4. Results were also compared to results published before for gasification of the same biomass but using air-steam mixtures for partial oxidation. This comparison shows that the use of oxygen increases both the temperature profile in the bed and the yield of CO and H 2 contained in the syngas.

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Section: Introductionmentioning

confidence: 99%

Experimental Gasification of Coffee Husk Using Pure Oxygen-Steam Blends

2019

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“…• Moderate requirements of gasification medium Pine woodchips 700-900 [23] Beech wood 750-850 [69] Rice straw 600-800 [26] Wood and bark waste 300-400 [70] Entrained flow • Flexibility types of feedstock.…”

Section: Gasificationmentioning

confidence: 99%

Waste to bioenergy: a review on the recent conversion technologies

et al. 2019

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Scientific studies have demonstrated that it is possible to generate a wide variety of bioenergy from biomass residues and waste, and however its cost is not competitive with petro-fuels and other renewable energy. Ongoing efforts are continued extensively to improve conversion technologies in order to reduce production costs. The present review focuses on the conversion technologies for transforming biomass residues and waste to biofuels, specifically their technological concepts, options and prospects for implementation are addressed. The emerging developments in the two primary conversion pathways, namely the thermochemical (i.e. gasification, liquefaction, and pyrolysis) and biochemical (i.e. anaerobic digestion, alcoholic fermentation and photobiological hydrogen production) conversion techniques, are evaluated. Additionally, transesterification, which appears to be the simplest and most economical route to produce biodiesel in large quantity, is discussed. Lastly, the strategies for direct conversion of biomass residues and waste to bioelectricity including the use of combustion and microbial fuel cells are reviewed.

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“…• Gasification is a much viable procedure in which the solid wastes are transforms into combustible gases which can be used as an energy fuel [57].…”

Section: Gasificationmentioning

confidence: 99%

Present Status and Potential of Biomass Energy in Pakistan Based on Existing and Future Renewable Resources

et al. 2019

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Pakistan is a developing country that is experiencing a shortage of electricity generation due to its rapidly growing demand. The existing and upcoming energy requirements for power generation and future transportation can be met by efficient utilisation of homegrown biomass resources. Determining the present energy mix resources in various sectors of the country is important. This article analyses the biomass resources and their potential and bioenergy utilisation in Pakistan. An overview of the global renewable energy scenario is presented. This article accentuates the importance and challenges of new technologies and estimates the current and future share of power generation from renewable sources, focusing on the technical potential of biomass energy, which is obtained from agricultural residues, animal manure and municipal solid wastes in Pakistan. This paper highlights the developing technologies that are primarily used to convert biomass waste into energy and presents a critical consideration on future directions in drafting the bioenergy framework policy in Pakistan. For effective implementation of biomass-based renewable energy production in the country, this paper presents an extensive literature review on current and future perspectives and suggestions on future directions and policies to overcome the deficit in electricity supply and environmental concerns. Furthermore, this paper discusses the utilisation of biomass resources in the rapidly growing transportation sector and presents a solution for upcoming mass transit projects in two major cities in Pakistan. The conclusion is that biomass energy is the most sustainable, eco-friendly and efficient renewable energy and is an emerging renewable energy resource that can meet the growing energy demand in Pakistan.

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Experimental study of biomass gasification with oxygen-enriched air in fluidized bed gasifier

Cited by 106 publications

References 18 publications

Experimental Gasification of Coffee Husk Using Pure Oxygen-Steam Blends

Experimental Gasification of Coffee Husk Using Pure Oxygen-Steam Blends

Waste to bioenergy: a review on the recent conversion technologies

Present Status and Potential of Biomass Energy in Pakistan Based on Existing and Future Renewable Resources

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