余春江,翟相和,解桂林,周宇盛,涂汉超.含床料的回转式生物质气化反应器实验[J].农业机械学报,2016,47(6):207-214,221.
Yu Chunjiang,Zhai Xianghe,Xie Guilin,Zhou Yusheng,Tu Hanchao.Experiment on Biomass Rotary Gasifier with Bed Material[J].Transactions of the Chinese Society for Agricultural Machinery,2016,47(6):207-214,221.
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含床料的回转式生物质气化反应器实验   [下载全文]
Experiment on Biomass Rotary Gasifier with Bed Material   [Download Pdf][in English]
投稿时间:2016-01-06  
DOI:10.6041/j.issn.1000-1298.2016.06.027
中文关键词:  回转式气化反应器  床料  生物质  气化效率
基金项目:国家自然科学基金项目(51336008)
作者单位
余春江 浙江大学 
翟相和 浙江大学 
解桂林 浙江大学 
周宇盛 浙江大学 
涂汉超 浙江大学 
中文摘要:为将传统回转炉窑机械扰动特性与流态化反应器内惰性床料的均温蓄热特性相结合,提出一种回转式气化反应器设计模式,以棉秆颗粒燃料为实验原料,首先考察了回转炉转速、过量空气系数、温度等参数对气化反应系统的影响。实验结果表明,回转炉转速控制在1~4r/min之间,随转速增加回转炉混合扰动特性增强,炉内温度分布更加均匀,不同指标参量均有提高,在实验范围内回转炉转速在3r/min时,取得较好的产气结果;实验控制温度在550~700℃范围,各指标均随温度升高有增大趋势,其中燃气热值、气化效率受温度影响较大,实验条件下,600~650℃温度范围内燃气热值和气化效率等指标有较大提升;过量空气系数对产气结果的各项指标均有较大影响,实验控制过量空气系数在0.2~0.4范围内变动,随过量空气系数增加,除产气率和床料区温度在一定程度增大外,其他指标均有先增大后减小的变化趋势,实验中过量空气系数为0.3时气化效果较好。典型热态实验结果表明,该回转式气化反应器产出的燃气组分与流化床接近,考虑显焓的气化效率约为79.3%、碳转化率约为81.3%;以气化炉为核心进行能量平衡计算,显示系统有效输出效率达到86.8%,散热损失为主要能量损失途径;对床料区底灰的分离研究发现,床料区滞留的底灰超过90%停留在床料区下部,且大部分底灰粒径较小。通过控制变量得到优化实验结果,可为该炉型的运行和设计改进提供参考。
Yu Chunjiang  Zhai Xianghe  Xie Guilin  Zhou Yusheng  Tu Hanchao
Zhejiang University,Zhejiang University,Zhejiang University,Zhejiang University and Zhejiang University
Key Words:rotary type gasifier  bed material  biomass  gasification efficiency
Abstract:In order to combine the traditional rotary mechanical disturbance characteristic with the inert bed material heat storage properties, a new type of rotary gasifier was designed. On the basis of the new type of rotary gasifier, a staged gasification and combustion experimental platform was designed and the thermal state test of the system was completed. The effects of rotational speed, equivalence ratio, temperature and other parameters on the gasification reaction system were investigated. The experimental results showed that when rotary furnace speed was controlled at 1~4r/min, the rotary furnace mixed disturbance characteristics were enhanced with the increase of rotary speed, and temperature distribution was more uniform in the furnace, different parameters were improved in the experimental range, good gas production was got at rotary furnace speed of 3r/min. When temperature was controlled in the range of 550~700℃, the gasification parameters were increased with the increase of temperature, and gas calorific value and gasification efficiency were affected greatly by temperature. Under the experimental conditions with temperature of 600~650℃, the calorific value of combustible gas, gasification efficiency and other indicators were greatly improved. The equivalent ratio (ER) was changed in the range of0.2~0.4, and it had great impact on gas production of the indicators, with the increase of equivalence ratio, the gas production rate and bed temperature were increased to a certain degree, the change trend of other gasification parameters were firstly increased and then decreased, good gasification results were obtained with ER of 0.3.The typical result showed that gas composition of rotary gasifier was close to that of the fluidized bed, considering the sensible enthalpy, the gasification efficiency was about 79.3% and the carbon conversion rate was about 81.3%. The gasifier energy balance was calculated, and the output efficiency of the system was 86.8%, with heat dissipation as main energy loss way. It was found from the separation of the bottom ash with bed material that about 86% of the total ash content was remained in the bed material area, and more than 90% of it was distributed in the bottom of the bed material area. Experimental results were optimized by controlling the variables for operation and design of new type of gasifier improvement to provide reference.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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