Pneumatic feeding characteristics of fluidized bed reactor for biomass fast pyrolysis

被引：0
|
作者：
Xu R. [1 ]
Bai Y. [1 ]
Si H. [1 ,2 ]
Liu D. [1 ]
Qi X. [2 ]
机构：
[1] School of Technology, Beijing Forestry University, Beijing
[2] Hebei Activated Carbon Industry Technology, Chengde
来源：
Huagong Jinzhan/Chemical Industry and Engineering Progress | 2022年 / 41卷 / 04期
关键词：
Biomass; Fast pyrolysis; Fluidized bed; Model; Pneumatic conveying;
D O I：
10.16085/j.issn.1000-6613.2021-0848
中图分类号：
学科分类号：
摘要：
In order to achieve a safe, continuous and stable supply of biomass feedstock to the fluidized bed pyrolysis reactor, a cold test apparatus for fluidized bed pneumatic feeding was designed and constructed. Larch and quartz sand were used as raw material and bed material respectively. The minimum fluidization velocity of the apparatus was measured and the effects of fluidized gas velocity, injection gas velocity, flow rate, initial static bed height, bed size and feedstock particle size on the feeding characteristics were studied. Experimental results showed that increasing the fluidized gas velocity and injection gas velocity could increase the feed rate. Fluidized gas provided feed space for biomass particles through fluidization of bed material. Injection gas provided kinetic energy for biomass particles and balanced part of the bed pressure. Increasing the particle size of biomass and bed material was detrimental to the feeding characteristics. Reasonable control of the gas flow ratio could improve the feeding rate and feeding stability. A three-phase flow model of biomass, bed material and gas was constructed to research the relative relationship between different parameters and feed rate. Experiments were carried out to verify the model. Results showed that the derivation error was ±13%. © 2022, Chemical Industry Press Co., Ltd. All right reserved.
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页码：1742 / 1749
页数：7
相关论文
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