Thermal enrichment of different types of biomass by low-temperature pyrolysis

Tabakaev, Roman; Ibraeva, Kanipa; Astafev, Alexander; Dubinin, Yury; Yazykov, N. A.; Заворин, Александр Сергеевич; Yakovlev, V. А.

doi:10.1016/j.fuel.2019.02.049

Cited by 49 publications

(5 citation statements)

References 50 publications

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“…The theoretical net calorific value of torrefaction by-products was determined based on the elemental composition of the released matter, which made up 61.6% of the weight of the original raw material at the process temperature 350 • C. The torrefaction by-products were 21.8% carbon, 4.3% hydrogen, and 0.2% nitrogen and oxygen. The derived calorific value was around 5.5 MJ/kg, and since carbon will not be free and will bind to oxygen and hydrogen, the calorific value will be low, similar to the results of, e.g., Tabakaev et al [73]. At 80% combustion efficiency, 1962 kWh of heat is generated, which was considered for use in heating the input material in the torrefaction reactor.…”

Section: Quality Parameters Of the Solid Torrefaction Productssupporting

confidence: 82%

Substituting Solid Fossil Fuels with Torrefied Timber Products

Malaťák,

Jankovský,

Malaťáková

et al. 2023

Materials

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As a push towards alternative and renewable resources for heat and power generation, biomass and thermally treated fuels from biomass may be viable options in the upcoming economic reality. This study the verified mass and energy balance of spruce woody biomass after low temperature pyrolysis between 250 and 550 °C. The results showed that low-temperature pyrolysis can yield high-grade biochar suitable for substitution of fossil fuels. Crucially, the net calorific value of biochar processed at 350 °C substantially exceeded that of brown coal. An economic analysis was carried out on the assumption of the current economic reality in the Czech Republic. It was shown that even if the price of the biochar slightly increased, it would still be beneficial to invest in torrefaction technology over paying carbon credits.

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Section: Quality Parameters Of the Solid Torrefaction Productssupporting

confidence: 82%

Substituting Solid Fossil Fuels with Torrefied Timber Products

Malaťák,

Jankovský,

Malaťáková

et al. 2023

Materials

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“…It is important to add that this calculation does not take into account the thermal effect arising in the pyrolysis process 46 and physical heat losses when the pyrolysis plant is under operation, due to their structural differences and technological performance. At the same time, the calculation takes into account the return of the secondary energy flow in the form of noncondensable gas during the pyrolysis of wood waste to compensate for fuel costs.…”

Section: Resultsmentioning

confidence: 99%

Energy recycling of pyrolysis water as a part of coal‐water fuel

Ларионов

Gvozdyakov

Zenkov

et al. 2021

Intl J of Energy Research

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Under research, there is a combustion process of multicomponent coal-water fuel (CWF) that was conducted with mixing ratio of coal, pyrolysis, and technical water. The pyrolysis water was extracted through pyrolysis oil settling, where the oil was obtained from pyrolysis of wood waste. Ignition and combustion of CWF samples were carried out in a combustion chamber at heating medium temperatures (T g = 600-1000 C, with an interim step of 50 C). Gas-phase combustion products were analyzed with a flow-line gas analyzer. Technical water in CWF composition was replaced with pyrolysis one that was acted to raise the reactive capacity. It resulted in reducing the ignition delay time τ i (by an average of 25%) and the minimum ignition temperature T min i (from 440 С to 393 С, reliance on a CWF composition). In addition, increase in flame combustion time was recorded by an average of 20%, as well as dependence on a heating medium temperature and a CWF composition. In the case when a CWF liquid-phase component was completely replaced with the pyrolysis water, the significant increase in heat value by 2.14 MJ/kg was observed. According to the data of the flow-line gas analyzer, we concluded that the CWF combustion based on the pyrolysis water was accompanied by less NO x emission (by an average of 22%) but more CO and CO 2 amount (by an average of 1.4 and 1.2, respectively). It was found according to the results of the energy balance assessment that application of pyrolysis water in CWF composition leads to a decrease in fuel consumption for heat production by 16.7%.

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“…It can be classified further into agriculture biomass, forestry biomass, crops, wood-based biomass, municipal and industrial waste, food waste, animal and human-generated waste. Biomass is the fourth primary energy source and currently delivers 14% of prime energy (Tabakaev et al, 2019). Biomass can be transformed into biofuels through biological and thermal conversion approaches.…”

Section: Introductionmentioning

confidence: 99%

Techno-Economical Evaluation of Bio-Oil Production via Biomass Fast Pyrolysis Process: A Review

et al. 2022

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Biomass pyrolysis is one of the beneficial sources of the production of sustainable bio-oil. Currently, marketable bio-oil plants are scarce because of the complex operations and lower profits. Therefore, it is necessary to comprehend the relationship between technological parameters and economic practicality. This review outlines the technical and economical routine to produce bio-oils from various biomass by fast pyrolysis. Explicit pointers were compared, such as production cost, capacity, and biomass type for bio-oil production. The bio-oil production cost is crucial for evaluating the market compatibility with other biofuels available. Different pretreatments, upgrades and recycling processes influenced production costs. Using an energy integration strategy, it is possible to produce bio-oil from biomass pyrolysis. The findings of this study might lead to bio-oil industry-related research aimed at commercializing the product.

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Thermal enrichment of different types of biomass by low-temperature pyrolysis

Cited by 49 publications

References 50 publications

Substituting Solid Fossil Fuels with Torrefied Timber Products

Substituting Solid Fossil Fuels with Torrefied Timber Products

Energy recycling of pyrolysis water as a part of coal‐water fuel

Techno-Economical Evaluation of Bio-Oil Production via Biomass Fast Pyrolysis Process: A Review

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