Characteristics and application of co-pyrolysis of coal/biomass blends with solid heat carrier

Guo, Min; Bi, Jing

doi:10.1016/j.fuproc.2015.07.018

Cited by 49 publications

(17 citation statements)

References 27 publications

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“…The types of blending fuels ought to be a major factor that can intrigue the synergy. It has been shown that many blends of biomass species and coal, such as hazelnut shell and coal [ 25 ], legume straw and coal [ 13 ], sawdust and coal [ 26 ], microalgae and coal [ 6 ], corncob and coal [ 12 ], and corn stalk and subbituminous coal [ 27 ], exhibit synergetic effects during copyrolysis process.…”

Section: Copyrolysis Reaction Parametersmentioning

confidence: 99%

“…The proportion of biomass in the blend had a significant influence on product distribution of solid, liquid, and gas [ 19 ]. With the increase of biomass blending ratio, the char yield decreases, while the yields of liquid and gas increase [ 27 , 41 ]. Copyrolysis experiments performed on TG revealed that percent residual mass decreased with increasing biomass content in blends [ 2 , 6 , 11 , 12 , 42 , 43 ].…”

Section: Copyrolysis Reaction Parametersmentioning

confidence: 99%

“…These increase the probability of gas phase reactions between the volatiles coming from coal and biomass, enhancing the intensity of the synergism. Many authors had confirmed that there was significant synergy in the vapor phase during copyrolysis of coal and biomass [ 12 , 19 , 27 , 59 ]. Simultaneously, the volatilization amount of alkali and alkaline earth metallic (AAEM) species at fast heating rates is higher than those at slow heating rate.…”

Section: Copyrolysis Reaction Parametersmentioning

confidence: 99%

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Copyrolysis of Biomass and Coal: A Review of Effects of Copyrolysis Parameters, Product Properties, and Synergistic Mechanisms

Quan

Gao

2016

BioMed Research International

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Concerns in the last few decades regarding the environmental and socioeconomic impacts of the dependence on fossil fuels have resulted in calls for more renewable and alternative energy sources. This has led to recent interest in copyrolysis of biomass and coal. Numerous reviews have been found related to individual pyrolysis of coal and biomass. This review deals mainly with the copyrolysis of coal and biomass and then compares their results with those obtained using coal and biomass pyrolysis in detail. It is controversial whether there are synergistic or additive behaviours when coal and biomass are blended during copyrolysis. In this review, the effects of reaction parameters such as feedstock types, blending ratio, heating rate, temperature, and reactor types on the occurrence of synergy are discussed. Also, the main properties of the copyrolytic products are pointed out. Some possible synergistic mechanisms are also suggested. Additionally, several outlooks based on studies in the literature are also presented in this paper.

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Section: Copyrolysis Reaction Parametersmentioning

confidence: 99%

Section: Copyrolysis Reaction Parametersmentioning

confidence: 99%

Section: Copyrolysis Reaction Parametersmentioning

confidence: 99%

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Copyrolysis of Biomass and Coal: A Review of Effects of Copyrolysis Parameters, Product Properties, and Synergistic Mechanisms

Quan

Gao

2016

BioMed Research International

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“…Fossil fuels, including coal, natural gas, crude oil, and its derivatives, still represent the primary energy source worldwide. Fossil fuel reserves are, however, limited and will soon come to an end − while burning them will continue to cause serious environmental and health concerns. − An important candidate for meeting future energy demands sustainably is biomass which can be converted into liquid biofuel or a solid energy carrier. ,− In 2007, the European Union set a target of increasing its share from renewable energy sources to 20% of the EU total energy consumption by 2020, which is a part of the 20–20–20 target with the combined reduction of EU greenhouse gas emissions to 20% and improvement in the EU’s energy efficiency by 20% on 1990 levels . In Europe, biomass is the main feedstock for renewable energy production as required by the EU commission …”

Section: Introductionmentioning

confidence: 99%

Thermal Investigation and Kinetic Modeling of Lignocellulosic Biomass Combustion for Energy Production and Other Applications

Osman

Abdelkader

Johnston

et al. 2017

Ind. Eng. Chem. Res.

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Herein, we studied the combustion and pyrolysis for miscanthus × giganteus (Elephant Grass) using TG/DSC techniques. Currently, miscanthus is used to an extent in energy generation applications however; issues with regards to its physicochemical combustion characteristics currently hinder this uptake. In this work, the thermal and kinetic analysis of dry miscanthus and its char were investigated for a better understanding of its physicochemical combustion characteristics and consequently, achieving the highest benefit from the combustion process. Different kinetic modeling has been used to calculate the activation energy and the kinetic parameters during combustion/pyrolysis such as the ASTM-E698, Flynn-Wall and Ozawa (FWO) and differential iso-conversional methods. It was observed that the activation energy values were 22.3, 40-150 and 40-165 kJ mol-1 for miscanthus, respectively. Furthermore, miscanthus species were tested in wastewater treatment and showed a potential for the rapid removal of cadmium heavy metal. In addition, a study of miscanthus ash was performed and indicated that it can be used as a source of potassium in the fertiliser industry.

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“…12 (Responsible Consumption and Production) also stipulates the reduction of waste through recycling and reuse [9][10][11][12]. Waste biomass has the potential to offer a sustainable resource for meeting future energy demands [13][14][15][16]. The term 'biomass' comprises organic plant matter; such as those derived from agricultural residues, food wastes, energy crops, grasses, algae, wastes from anaerobic digestion (AD) plants and sewage sludge [17].…”

Section: Introductionmentioning

confidence: 99%

Thermokinetic study of residual solid digestate from anaerobic digestion

Akor

Osman

Farrell

et al. 2021

Chemical Engineering Journal

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Anaerobic digestion (AD) has become an effective waste management method in the agri-food sector to dispose of livestock and food wastes. As AD becomes more widely used new challenges emerge, such as the disposal of digestate by-products. Currently, the principal method for handling solid digestate (SD) is direct application to land as an organic fertiliser. However, as the sector grows, this option is less viable due to nutrition loading on the land and increased eutrophication. This paper explores the potential of using SD, as a biofuel source. Additionally, the pyrolysis kinetic triplet of residual SD and thermal predictions was reported for the first time using Advanced Kinetics and Technology Solutions (AKTS) thermokinetics software to model and calculate the activation energy (Ea) and other kinetic parameters. ASTM-E698, Ozawa-Flynn-Wall and differential iso-conversional (model-free) methods were used and the Ea values calculated from each model were 169.8, 75 -175.0, and 85 -190.0 kJ mol -1 , respectively. The kinetic triplet can be used in the scale-up or designing of reactor systems considering SD as a feedstock. The kinetic prediction of isothermal pyrolysis of SD indicated that a temperature higher than 210 °C is required for onset of decomposition in the sample. Furthermore, SD has the potential to produce an additional ~27.9 MJ per day at a 500 kW standalone on-farm AD plant. This work has highlighted the potential of waste solid digestate as a potential solid biofuel that could add an additional revenue stream to AD plants and make them more sustainable.

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Characteristics and application of co-pyrolysis of coal/biomass blends with solid heat carrier

Cited by 49 publications

References 27 publications

Copyrolysis of Biomass and Coal: A Review of Effects of Copyrolysis Parameters, Product Properties, and Synergistic Mechanisms

Copyrolysis of Biomass and Coal: A Review of Effects of Copyrolysis Parameters, Product Properties, and Synergistic Mechanisms

Thermal Investigation and Kinetic Modeling of Lignocellulosic Biomass Combustion for Energy Production and Other Applications

Thermokinetic study of residual solid digestate from anaerobic digestion

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