PRELIMINARY STUDY ON PYROLYSIS CHAR GASIFICATION USING A BUBBLING FLUIDIZED BED GASIFIER

机译：鼓泡流化床气化炉热解焦炭的初步研究

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This preliminary experimental work aims to gain additional insight into the char gasification process inrna bubbling fluidized-bed gasifier, as a potential route for obtaining hydrogen destined to bio-oil hydrodeoxygenation.rnDifferent operating conditions were tested in order to enhance hydrogen production, which in the best studied casernreached 0.26 mol H_2/mol C. More work is required to further improve char gasification conversion in a bubblingrnfluidized bed reactor.

机译：这项初步的实验工作旨在进一步了解炭在鼓泡流化床气化炉中的气化过程，作为获得用于生物油加氢脱氧的氢气的潜在途径。为了提高氢气产量，对不同的操作条件进行了测试，最佳研究案例达到了0.26 mol H_2 / molC。需要更多的工作来进一步提高鼓泡流化床反应器中焦炭的气化转化率。

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来源
《European biomass conference and exhibition;ETA-Florence Renewable Energies》|2015年|660-663|共4页
会议地点 Vienna(AT)
作者
R. Moreira; A. Portugal; N. Gil-Lalaguna; F. Bimbela; J. L. Sánchez;
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作者单位

Universidade de Coimbra/Chemical Engineering Department. Rua Sílvio Lima, Pólo II, 3030-790, Coimbra, Portugal;

Universidade de Coimbra/Chemical Engineering Department. Rua Sílvio Lima, Pólo II, 3030-790, Coimbra, Portugal;

Universidad de Zaragoza/Aragón Institute for Engineering Research. C/Mariano Esquillor s, 50018, Zaragoza, Spain noemigil@unizar.es phone: +34 976 76 29 61;

Universidad de Zaragoza/Aragón Institute for Engineering Research. C/Mariano Esquillor s, 50018, Zaragoza, Spain;

Universidad de Zaragoza/Aragón Institute for Engineering Research. C/Mariano Esquillor s, 50018, Zaragoza, Spain;

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原文格式 PDF
正文语种 eng
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关键词
gasification; charcoal; fluidized bed;

机译：气化;木炭;流化床;
入库时间 2022-08-26 13:48:25

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4. PRELIMINARY STUDY ON PYROLYSIS CHAR GASIFICATION USING A BUBBLING FLUIDIZED BED GASIFIER [C] . R. Moreira, A. Portugal, N. Gil-Lalaguna, European biomass conference and exhibition . 2015

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5. A Study on the Hydrodynamics of a Bench-Scale Top-Fed Bubbling Fluidized Bed Gasifier Using Biomass and Coal as Feedstocks [D] . Sivri, Ali Can. 2020

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6. Effects of Water Content and Particle Size on Yield and Reactivity of Lignite Chars Derived from Pyrolysis and Gasification [O] . Yong Huang, Yonggang Wang, Hao Zhou, 2018

机译：水分和粒度对热解气化褐煤焦收率和反应性的影响
7. This article presents a new numerical model describing the behaviour of a thermally thick wood sample exposed to high solar heat flux (above 1 MW/m2). A preliminary study based on dimensionless numbers is used to classify the problem and support model building assumptions. Then, a model based on mass, momentum and energy balance equations is proposed. These equations are coupled with liquid-vapour drying model and pseudo species biomass degradation model. By comparing to a former experimental study, preliminary results have shown that these equations are not enough to accurately predict biomass behaviour under high solar heat flux. Indeed, a char layer acting as radiative shield forms on the sample exposed surface. In addition to this classical set of equations, it is mandatory to take into account radiation penetration into the medium. Furthermore, as biomass contains water, medium deformation consecutively to char steam gasification must also be implemented. Finally, with the addition of these two strategies, the model is able to properly capture the degradation of biomass when exposed to high radiative heat flux over a range of sample initial moisture content. Additional insights of biomass behaviour under high solar heat flux were also derived. Drying, pyrolysis and gasification fronts are present at the same time inside of the sample. The coexistence of these three thermochemical fronts leads to char gasification by the steam produced from drying of the sample, which it is the main phenomenon behind medium ablation. [O] . Pozzobon, Victor, Salvador, Sylvain, Bézian, Jean Jacques 2018

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8. Coal Gasification Support Studies. Vol. II, Task 2. Studies of Fluidized-Bed Reactors in Coal Gasification Processes. Final Report, November 19, 1981-August 15, 1982 [R] . Guppy, J. G., Horak, W. C., Van Tuyle, G. J. 1983

机译：煤气化支持研究。卷。 II，任务2.煤气化过程中流化床反应器的研究。最终报告，1981年11月19日至1982年8月15日

PRELIMINARY STUDY ON PYROLYSIS CHAR GASIFICATION USING A BUBBLING FLUIDIZED BED GASIFIER

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