Biomass as an energy source in coal co-firing and its feasibility enhancement via pre-treatment techniques

Madanayake, Buddhike Neminda; Gan, Suyin; Eastwick, Carol; Ng, Hoon Kiat

doi:10.1016/j.fuproc.2017.01.029

Cited by 116 publications

(50 citation statements)

References 88 publications

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“…The moisture content of the untreated wood sample used in this study was low at 6% and similar to the 6.5% of reported for oak wood [16]. Table 3 shows the proximate analysis results of untreated and treated woods at 220, 260, 300, 350, 450 and 550 • C. The VM of untreated wood is high (88.1%), while its FC (11.5%) and ash (0.4%) are low.…”

Section: Proximate Analysis and High Heating Value Of Untreated And Tsupporting

confidence: 75%

“…The measured bulk density of the untreated cherry wood was 540 kg/m 3 (0.54 g/cm 3 ) which falls in the typical range [16], The densities of the treated wood samples decreased with increasing temperature over the temperature range of 220 to 350 • C but changed little over the range of 350 to 550 • C. The bulk density of wood is dependent upon cellular diameters and wall thickness [47]. During the thermal treatments, weight loss and size reduction caused by the decomposition of chemical components in the cell wall resulted in the density changes.…”

Section: Physical Properties Of Untreated and Treated Woodsmentioning

confidence: 79%

“…The decomposed hemicellulose resulted in the cell walls weakening and subsequently improved grindability as shown by the increase in the percentage of small particles versus the untreated wood. For the treated wood at 350 • C, the percentage that passed through the 106 µm sieve increased to 16.7% compared to 3% of the treated wood at 300 • C. However, further treatment at higher temperatures did not further improve the grindability. The results are similar to Abdullah and Wu (2009) who reported that grindability of treated wood at 300 • C was drastically improved but increasing temperature to 500 • C resulted in only a small additional improvement in the grindability [10].…”

Section: Grindbility Of Untreated and Treated Woodsmentioning

confidence: 84%

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Impact of Thermal Pretreatment Temperatures on Woody Biomass Chemical Composition, Physical Properties and Microstructure

Wang

Howard

2017

Energies

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Thermal pretreatment of biomass by torrefaction and low temperature pyrolysis has the potential for generating high quality and more suitable fuels. To utilize a model to describe the complex and dynamic changes taking place during these two treatments for process design, optimization and scale-up, detailed data is needed on the property evolution during treatment of well-defined individual biomass particles. The objectives of this study are to investigate the influence of thermal pretreatment temperatures on wood biomass biochemical compositions, physical properties and microstructure. Wild cherry wood was selected as a model biomass and prepared for this study. The well-defined wood particle samples were consecutively heated at 220, 260, 300, 350, 450 and 550 • C for 0.5 h under nitrogen. Untreated and treated samples were characterized for biochemical composition changes (cellulose, hemicellulose, and lignin) by thermogravimetric analyzer (TGA), physical properties (color, dimensions, weight, density and grindablity), chemical property (proximate analysis and heating value) and microstructural changes by scanning electron microscopy (SEM). Hemicellulose was mostly decomposed in the samples treated at 260 and 300 • C and resulted in the cell walls weakening resulting in improved grindability. The dimensions of the wood were reduced in all directions and shrinkage increased with increased treatment temperature and weight loss. With increased treatment temperature, losses of weight and volume increased and bulk density decreased. The low temperature pyrolyzed wood samples improved solid fuel property with high fuel ratio, which are close to lignite/bituminous coal. Morphology of the wood remained intact through the treatment range but the cell walls were thinner. These results will improve the understanding of the property changes of the biomass during pretreatment and will help to develop models for process simulation and potential application of the treated biomass.

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Section: Proximate Analysis and High Heating Value Of Untreated And Tsupporting

confidence: 75%

Section: Physical Properties Of Untreated and Treated Woodsmentioning

confidence: 79%

Section: Grindbility Of Untreated and Treated Woodsmentioning

confidence: 84%

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Impact of Thermal Pretreatment Temperatures on Woody Biomass Chemical Composition, Physical Properties and Microstructure

Wang

Howard

2017

Energies

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“…Due to their short life cycle, biomass fuels are often considered to be carbon neutral in nature. Madanayake et al (2017), noted that the major shortcomings of biomasses as a resource were their distributed nature and low energy and mass densities. Mun et al (2016) showed that the optimal location of the plant with respect to the available biomass sites held a considerable impact on the cost of large scale energy production from biomass.…”

Section: Introductionmentioning

confidence: 99%

“…If biomass is grown in a sustainable way, its production and application produce no net amount of CO 2 in the atmosphere. The CO 2 released by the application of biomass is stored in the biomass resource during photosynthesis and is extracted from the atmosphere which means a climate neutral carbon cycle of CO 2 (van der Stelt et al, 2011;Madanayake et al, 2017). Another advantage of co-firing biomass with coal involves the higher volatility of biomass.…”

Section: Introductionmentioning

confidence: 99%

Study on combustion characteristics of coal-biomass for co-firing system as a feedstock of coal gasification process

Umar

Hudaya

Sulistyohadi

2017

IMJ

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Biomass co-firing is recognised as a crucial technology to aid in the use of fossil fuels, particularly due to its relative ease of implementation. Many studies of the combustion processes associated with cofiring have been conducted elsewhere. This paper discusses the combustion characteristics of coal and torrefied biomasses. Combustion profiles can be used to study certain combustion properties of fuels and fuel blends. The biomass fuels utilized in this study include twig, trunk and weed as the wastes from tea plantation. The results of this work provide data concerning the combustion processes of co-firing determined by simultaneous thermal analysis (STA) methods. Simultaneous thermogravimetric & differential scanning calorimetry/differential thermal analysis (STA, TGA-DSC/DTA) measures both the heat flow (DSC) and the weight changes (TG) in a material as a function of temperature or time in a controlled atmosphere. The results indicate that the mixture of coal and torrefied trunk in the weight ratio of coal-trunk of 25:75 shows the best combustion performance compared to other compositions of coal -torrefied biomass.Keywords: coal, biomass, co-firing, torrefaction, combustion Kata kunci: batubara, biomasa, pembakaran bersama, pengarangan, pembakaran. ABSTRAK Sistem pembakaran bersama (co-firing) diakui sebagai teknologi yang dapat membantu dalam membatasi penggunaan bahan bakar fosil, terutama karena mudah untuk diimplementasikan. Beberapa studi tentang proses pembakaran terkait dengan pembakaran bersama ini telah banyak dilakukan. Makalah ini membahas karakteristik pembakaran batubara dan biomasa yang telah mengalami proses pengarangan (torrefaction). Profil pembakaran dapat digunakan untuk mempelajari

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Corrosion behavior of T24, T92, VM12, and AISI 304 steels exposed to KCl–NaCl–K₂SO₄–Na₂SO₄ salt mixtures

Abu-warda

López

Pedraza

et al. 2020

Materials & Corrosion

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The corrosion mechanisms of T24, T92, VM12, and AISI 304 steels are studied under the influence of NaCl–KCl, NaCl–Na2SO4, and KCl–K2SO4 salt mixtures in a dry air atmosphere at 650°C for 15 days. NaCl–KCl was the most aggressive deposit and AISI 304 stainless steel exhibited the highest corrosion resistance. There was no relation between the Cr content of the ferritic steels and their corrosion resistance in NaCl–KCl. In contrast, the resistance of high‐Cr steels was better when exposed to NaCl–Na2SO4 and KCl–K2SO4. The high‐Cr and the low‐Cr steels were more susceptible to NaCl–Na2SO4 and to KCl–K2SO4, respectively.

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Biomass as an energy source in coal co-firing and its feasibility enhancement via pre-treatment techniques

Cited by 116 publications

References 88 publications

Impact of Thermal Pretreatment Temperatures on Woody Biomass Chemical Composition, Physical Properties and Microstructure

Impact of Thermal Pretreatment Temperatures on Woody Biomass Chemical Composition, Physical Properties and Microstructure

Study on combustion characteristics of coal-biomass for co-firing system as a feedstock of coal gasification process

Corrosion behavior of T24, T92, VM12, and AISI 304 steels exposed to KCl–NaCl–K₂SO₄–Na₂SO₄ salt mixtures

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Biomass as an energy source in coal co-firing and its feasibility enhancement via pre-treatment techniques

Cited by 116 publications

References 88 publications

Impact of Thermal Pretreatment Temperatures on Woody Biomass Chemical Composition, Physical Properties and Microstructure

Impact of Thermal Pretreatment Temperatures on Woody Biomass Chemical Composition, Physical Properties and Microstructure

Study on combustion characteristics of coal-biomass for co-firing system as a feedstock of coal gasification process

Corrosion behavior of T24, T92, VM12, and AISI 304 steels exposed to KCl–NaCl–K2SO4–Na2SO4 salt mixtures

Contact Info

Product

Resources

About

Corrosion behavior of T24, T92, VM12, and AISI 304 steels exposed to KCl–NaCl–K₂SO₄–Na₂SO₄ salt mixtures