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转锥式生物质闪速热解装置设计理论及仿真研究
Design Theory and Simulation Study on Rotating Cone Flash Prolysis Device for Biomass
【作者】 李滨;
【导师】 王述洋;
【作者基本信息】 东北林业大学 , 机械设计及理论, 2008, 博士
【摘要】 能源是人类社会进步最为重要的基础,是社会经济发展的基本动力之一。由于人类对化石能源过度使用,不仅对人类赖以生存的环境带来严重的污染,并且由于这种能源的逐渐匮乏,成为人类未来社会发展的潜在危机。因此,寻找和开发适合我国国情的可再生新型能源及石油替代品迫在眉睫。我国是农业大国,生物质资源非常丰富。但是由于没有先进、高效和能进入市场的利用技术,每年有巨量的废弃生物质而被白白废弃,因此能否找到一种新的技术,将每年巨量浪费的废弃生物质经济、方便地转化成可进入市场并且销售良好的生物燃油商品,具有重大经济意义、社会现实意义和生态环保意义。本文在国家“863”能源技术主题后备能源领域项目“集成式生物质多重闪速热解液化生产生物燃油新技术”项目的依托下,对转锥式生物质闪速热解液化装置反应器的设计理论进行了深入的研究,建立了热载体在反应器内部的空间动力学模型,推导出热载体的空间运动状态方程,转锥的最小锥角方程,并对转锥的强度计算方法、生产能力计算方法及功率设计方法进行了推算。从而建立了热解反应器的基本设计理论。结合有限元和模糊优化理论,提出了基于模糊优化的转锥有限元设计方法,所采用的模糊有限元方法能够充分体现问题的模糊性和工程结构的实际性,从而为转锥的结构设计和优化提供了重要理论依据。应用ADAMS软件对热解反应器进行了动力学仿真,建立了旋转锥和热载体计算机仿真模型。随后进行了不同的转锥锥角和转锥转速的运动仿真,找到了转锥锥角、固体滞留期和转锥转速间的最佳匹配关系。应用以上的理论、方法和仿真结果,自主研制了ZKR-200A型生物质闪速热解液化制油装置,并进行了实车实验。对4种常见的生物质进行热解液化实验,对所得到的生物质热解油进行了组分分析,得到了该装置生物质的加工能力的生物质能量转化率。通过以上的研究和实验为我国研制自己的、具有自主产权的先进的转锥式生物质闪速热解液化装置,提供了重要基础理论、设计方法和参考依据。
【Abstract】 Energy is the most important basis in progress of the human society,also is one of the basic driving force to Socio-economic development.As mankind’s excessive use of fossil fuels,not only cause serious environmental pollution for the survival of mankind,but also because of the lack of energy gradually,this develops with a potential crisis in the future of mankind.Therefore,It is imminent to find and develop renewable new energy and alternatives to oil to suit China’s national conditions and.China is a large agricultural country and very rich in biomass resources.But in the absence of advanced,efficient technology to enter the market to use,in each year the massive amount of waste biomass were simply abandoned,so it has a major economic significance,ecological significance and social reality of environmental significance to find a new technology which would economy conveniently transform massive waste of biomass into fuel commodities which be able to enter into the market and sale well annually.This paper relys on projects "integrated biomass multiple flash pyrolysis liquefaction production of bio-fuel technology" which is the national "863" theme reserve energy technology projects in the area of energy.We have had a study in-depth on the cone of the flash pyrolysis of biomass liquefaction plant reactor’s Design Theory,and established the Space Dynamics Model of a heat carrier in the reactor internal.From thermal we not only deduced space vector equation of state campaign and to the smallest cone angle equation,but also have done some projection to the strength of cone method of calculating and production Calculation methods and design methods for power.Thereby establishing the pyrolysis reactor’s basic design theory.Based on the finite element and fuzzy optimization theory,proposed the cone FEM design theory based on fuzzy optimization,this finite element method can reflect the fuzzy of the problem and Practical of Engineering Structures.It has provided an important theoretical basis for the structural design and optimization of the cone.Applying the software ADAMS,we did dynamic simulation on pyrolysis reactor,then established computer simulation model of a revolving cone and eat carrier.To find the best relationship of a cone angle,solid retention period and its speed to match,we conducted a different cone to cone to cone angle and speed simulation.By using ZKR-200A that is a kind of biomass flash pyrolysis liquefaction oil installations which is independent researched,we did pyrolysis of liquefaction experiments on four kinds of common biomass and then we conducted an analysis on biomass pyrolysis oil component received by the Device.Finally,we obtained the biomass energy conversion rate of this device on biomass processing capacity.Through the above research and experiment,we provide an important basis theory,design methods and reference for China to develop its own advanced flash pyrolysis of biomass liquefaction device which is with our own proprietary to the cone。
【Key words】 biomass; flash pyrolysis; cone reactor; fuzzy optimization; finite element; simulation ADAMS;