移动式生物质快速热解反应器的设计及流态化模拟

 快速热裂解是最有发展潜力的生物质能源转化技术之一。移动式快速热裂解设备以移动工厂化的作业方式将分散的生物质就地转化为高品质生物油,大大减少了原料的运输成本。本文对移动液化装置的关键设备--反应器进行了结构设计,将燃烧室与反应器合为一体,二者之间的环形区域形成反应器的工作区;并采用Fluent 6.2软件分别对传统和所设计的反应器进行了流态化模拟。结果表明,冷态条件下,两种反应器的流态化效果非常接近,新型反应器完全能够满足工作要求。而与传统反应器相比,新型反应器具有热效率高、结构紧凑、操作简便等特点,适用于移动作业。

Reactor Design of Mobile Fast Pyrolysis Apparatus and Its Simulation for Fluidization

Fast pyrolysis is seemed to be an important approach to produce the energy from biomass. Bio-energy offers a clean, renewable source of energy. Its impressive potential makes this technology develop fast. Mobile fast pyrolysis apparatus works as a mobile plant. It could convert the biomass into bio-oil with high quality which will be used to produce other products. The mobile apparatus is designed to have the mobility in order to collect the biomass dispersed in the fields. In this way, the cost of raw materials transportation will be largely reduced. The reactor which is the key component of this apparatus is designed. This new type of reactor is a combination of combustion chamber and reaction space. An annular reacting area is provided by the special structure of the reactor. This construction makes the reactor small enough to seize the space need by the whole equipment. The software of Fluent 6.2 is used for the digital simulation of fluidization condition in the traditional reactor and the new one. The results show that the fluidization effects of these two reactors are almost same under the cold condition. The new type of reactor is proved that is adequate to the job. Comparing with the traditional reactor, the new one has the characteristics of high thermal efficiency, compact, easy operation, etc, which make it well suite to the mobile operation.