The study of fluidization fast pyrolysis of straw based on the biomass entrained flow gasification

Dong Li; Dailin Hao; Qiang Quo; Ruirui Xiao; Xueli Chen

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The study of fluidization fast pyrolysis of straw based on the biomass entrained flow gasification

机译：基于生物质气流床气化的秸秆流化快速热解研究

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Straw is considered to be a kind of low heating value biomass. A new entrained flow gasification process to utilize the straw was proposed and introduced fast pyrolysis as a straw pre-treatment unit for biomass entrained flow gasification process. This study was focused on the key factors influencing on the pyrolysis products of straw and optimized the pyrolysis condition based on the analysis results to meet the needs for biomass entrained flow gasification. Experiments were carried out at the temperature ranged from 300 to 600 ℃. Under certain particle size and optimized fluidization flow, the maximum liquid product yield was 43.1% at the temperature of 400 ℃ and the maximum solid product yield was 65.6% at the temperature of 300 ℃. The characteristics of both liquid and solid products relevant to the gasification applications were analyzed. The results showed that the energy density of the products was far more higher than that of the crude straw. Finally, an optimal pyrolysis condition was proposed, which was considered to be a suitable feedstock solution for the biomass-slurry entrained flow gasification.

机译：秸秆被认为是一种低热值生物质。提出了一种利用秸秆的气流床气化新工艺，并引入了快速热解作为生物质气流床气化工艺的秸秆预处理装置。本研究着重于影响秸秆热解产物的关键因素，并根据分析结果优化了热解条件，以满足生物质夹带流化气化的需要。实验是在300至600℃的温度范围内进行的。在一定的粒径和最佳的流化流量条件下，温度为400℃时，液体产品的最大产率为43.1％；温度为300℃时，固体产品的最大产率为65.6％。分析了与气化应用相关的液体和固体产品的特性。结果表明，产品的能量密度远高于粗秸秆。最后，提出了最佳的热解条件，认为该条件是生物质浆液夹带流化气化的合适原料溶液。

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《Developments in chemical engineering and mineral processing》 |2009年第5期|793-799|共7页
作者
Dong Li; Dailin Hao; Qiang Quo; Ruirui Xiao; Xueli Chen;
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作者单位

Institute of Clean Coal Technology, Key Laboratory of Coal Gasification of Ministry of Education, East China University of Science and Technology, 200237, Shanghai, China;

Institute of Clean Coal Technology, Key Laboratory of Coal Gasification of Ministry of Education, East China University of Science and Technology, 200237, Shanghai, China;

Institute of Clean Coal Technology, Key Laboratory of Coal Gasification of Ministry of Education, East China University of Science and Technology, 200237, Shanghai, China;

Institute of Clean Coal Technology, Key Laboratory of Coal Gasification of Ministry of Education, East China University of Science and Technology, 200237, Shanghai, China;

Institute of Clean Coal Technology, Key Laboratory of Coal Gasification of Ministry of Education, East China University of Science and Technology, 200237, Shanghai, China;

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正文语种 eng
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关键词
straw; biomass; fast pyrolysis; entrained flow gasification;

机译：稻草;生物质快速热解;气流床气化;

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1. Entrained flow gasification of straw- and wood-derived pyrolysis oil in a pressurized oxygen blown gasifier [J] . E.J. Leijenhorst, D. Assink, L. van de Beld, Biomass & bioenergy . 2015,第auga期

机译：加压吹氧气化炉中秸秆和木材衍生的热解油的气流床气化
2. Contribution to the Understanding of Secondary Pyrolysis of Biomass-Based Slurry under Entrained-Flow Gasification Conditions [J] . Stoesser Philipp, Ruf Johannes, Gupta Rajender, Energy & fuels . 2016,第8期

机译：有助于理解气流床气化条件下基于生物质的浆液的二次热解
3. Techno-economic assessment of biomass-to-ethanol by indirect fluidized bed gasification: Impact of reforming technologies and comparison with entrained flow gasification [J] . C. Reyes Valle, A.L. Villanueva Perales, F. Vidal-Barrero, Applied Energy . 2013,第sepa期

机译：间接流化床气化技术对生物质制乙醇的技术经济评估：重整技术的影响以及与气流床气化技术的比较
4. The study of fluidization fast pyrolysis of straw based on the biomass entrained flow gasification [C] . LONG Zhengwei, YAO Qiang, SONG Qiang, Asian Pacific Confederation of Chemical Engineering congress . 2008

机译：基于生物质气流床气化的秸秆流化快速热解研究
5. Predictive Computational Tools for Biomass Fast Pyrolysis in Fluidized-Bed Reactors Using Particle-Resolved Direct Numerical Simulation of Reacting Gas-Solid Flow [D] . Peng, Cheng. 2018

机译：流化床反应器中生物质快速热解的预测计算工具，采用气固流动反应的粒子分解直接数值模拟
6. Data-Based Prediction and Stochastic Analysis of Entrained Flow Coal Gasification under Uncertainty [O] . Iftikhar Ahmad, Ahsan Ayub, Nisar Mohammad, 2019

机译：不确定条件下气流床气化的基于数据的预测和随机分析
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. Ablative Fast Pyrolysis of Biomass in the Entrained-Flow Cyclonic Reactor at SERI [R] . Diebold, J., Scahill, J. 1982

机译：sERI中气流旋流式反应器生物质的烧蚀快速热解

The study of fluidization fast pyrolysis of straw based on the biomass entrained flow gasification

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