糠醛渣流化床燃烧过程中床料粘结机理研究

李皓宇; 刘敬樟

doi:10.7652/xjtuxb201506023

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糠醛渣流化床燃烧过程中床料粘结机理研究

更新时间：2025-07-09

- 糠醛渣流化床燃烧过程中床料粘结机理研究
- Mechanism of Bed Material Agglomeration During Fluidized Bed Combustion of Furfural Residues
- 西安交通大学学报 2015年49卷第6期页码：145-150
- 作者机构：
  
  中国科学院工程热物理研究所,北京,100190
- 作者简介：
- 基金信息：
  
  : 2014-10-25。作者简介: 李皓宇(1985—),男,助理研究员。基金项目: 中国科学院国际合作局对外合作重点资助项目(GJHZ201301)
- DOI：10.7652/xjtuxb201506023
  中图分类号： TK16
- 网络首发：2015-06-10，
  
  纸质出版：2015
- 稿件说明：
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李皓宇, 刘敬樟. 糠醛渣流化床燃烧过程中床料粘结机理研究[J]. 西安交通大学学报, 2015,49(6):145-150.

Mechanism of Bed Material Agglomeration During Fluidized Bed Combustion of Furfural Residues[J]. 2015, 49(6): 145-150.
李皓宇, 刘敬樟. 糠醛渣流化床燃烧过程中床料粘结机理研究[J]. 西安交通大学学报, 2015,49(6):145-150. DOI： 10.7652/xjtuxb201506023.

Mechanism of Bed Material Agglomeration During Fluidized Bed Combustion of Furfural Residues[J]. 2015, 49(6): 145-150. DOI： 10.7652/xjtuxb201506023.

摘要

为了研究糠醛渣流化床燃烧过程中床料粘结机理

在小型鼓泡流化床实验装置上

以石英砂作为床料

对糠醛渣在不同温度(750、800、850、900 ℃)下燃烧过程中床料的粘结现象进行了实验研究并对其机理进行了探讨。实验结果表明:在实验时间范围内(6 h)

只有900 ℃工况出现了床料粘结失流现象。通过对实验后的床料和结团分别进行X射线衍射(XRD)和扫描式电子显微镜/射线能谱仪(SEM/EDS)分析表明

不同温度下床料粘结失流特性不同的根本原因在于糠醛渣灰中主要碱金属钾盐存在的形式不同

750 ℃为KCl

800 ℃为KCl和K

混合物

800 ℃以上则为含碱金属钾的复杂硅铝和硅钙化合物

而复杂化合物的熔点在900 ℃左右。因此

说明含碱金属钾的复杂硅铝和硅钙化合物熔融对糠醛渣流态化燃烧床料粘结失流具有重要作用。实验结果对糠醛渣流化床锅炉燃烧温度的选取具有较重要的参考价值。

Abstract

Experiments are carried out in a bench-scale bubbling fluidized bed with silica sand at different bed temperature(750

800

850

and 900 ℃)to study the mechanism of bed material agglomeration during fluidization combustion of furfural residues. The results show that bed agglomeration and defluidization only take place at 900 ℃ during the experiment period(6 hours). XRD and SEM/EDS analyses on bed materials and agglomerate samples discharged from the bed after combustion show that the main reason that makes the fluidized bed have different characteristics of bed agglomeration and defluidization is the different composition of alkali metal potassium salt in furfural residue ash at different bed

temperature. The main composition of alkali metal potassium salt is KCl at 750 ℃

a mixture of KCl and K

at 800 ℃

and a complex containing alkali metal potassium silicate compounds with Al and Ca above 800 ℃. The melting point of the complex is about 900 ℃. Thus

the melting of this complex compounds plays an important role in agglomeration and defluidization during combustion of furfural residue in fluidized bed. These results have certain reference value for choosing combustion temperature in furfural residue fluidization bed boiler.

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references

别如山, 杨励丹, 陆慧林, 等. 糠醛渣在流化床中燃烧特性的试验研究 [J]. 太阳能学报, 2001, 22(3): 292-295.

BIE Rushang, YANG Lidan, LU Huilin, et al. Experimental study on furfural residue combustion in a fluidized bed [J]. Acta Energiae Solaris Sinica, 2001, 22(3): 292-295.

李诗媛, 矫维红, 吕清刚. 不同床料流化床生物质燃烧粘结机理研究 [J]. 工程热物理学报, 2009, 30(5): 869-872.

LI Shiyuan, JIAO Weihong, LU Qinggang. Mechanisms of reducing bed agglomeration during fluidized-bed combustion of bio-fuels pellet with four kinds of bed material [J]. Journal of Engineering Thermophysics, 2009, 30(5): 869-872.

ELISABET B, MARCUS O, ANDERS N. Mechanisms of bed agglomeration during fluidized bed combustion of biomass fuels [J]. Energy and Fuels, 2005, 19(3): 825-832.

RICCARDO C, FRANCESCO M, FABRIZIO S. Mechanism and prediction of bed agglomeration during fluidized bed combustion of a biomass fuel: effect of the reactor scale [J]. Chemical Engineering Journal, 2006, 123(3): 71-80.

LIN W, DAM-JOHANSEN K, FRANDSEN F. Agglomeration in bio-fuel fired fluidized bed combustors [J]. Chemical Engineering Journal, 2003, 96(1/2/3): 171-185.

MALTE B, LIN W, JOHN N, et al. Agglomeration in fluidized beds at high temperatures: mechanisms, detection and prevention [J]. Progress in Energy and Combustion Science, 2008, 34(5): 633-666.

金保升, 孙志翱, 章名耀, 等. 棉秆在循环流化床中燃烧特性的实验研究 [J]. 中国电机工程学报, 2008, 28(8): 99-104.

JIN Baosheng, SUN Zhiao, ZHANG Mingyao, et al. Experimental study on cotton stalk combustion in circulating fluidized bed [J]. Proceedings of CSEE, 2008, 28(8): 99-104.

SUN Zhiao, JIN Baosheng, ZHANG Mingyao, et al. Experimental study on cotton stalk combustion in a circulating fluidized bed [J]. Applied Energy, 2008, 85(11): 1027-1040.

SALA F, CHIRONE R. Characterization and early detection of bed agglomeration during the fluidized bed combustion of olive husk [J]. Energy and Fuels, 2006, 20(1): 120-132.

NIU Yanqing, TAN Houzhang, WANG Xuebin, et al. Study on fusion characteristics of biomass ash [J]. Bioresource Technology, 2010, 101(23): 9373-9381.

秦建光, 余春江, 聂虎, 等. 生物质灰成分测试中的偏差问题分析 [J]. 中国电机工程学报, 2009, 29(8): 97-102.

QIN Jianguang, YU Chunjiang, NIE Hu, et al. Analysis of deviation in biomass ash composition [J]. Proceedings of CSEE, 2009, 29(8): 97-102.

SALA F, CHIRONE R. An SEM/EDX study of bed agglomerates formed during fluidized bed combustion of three biomass fuels [J]. Bioresource Technology, 2008, 32(3): 252-266.

ALEJANDRO G, NILS S, DAN B, et al. Bed agglomeration characteristics in fluidized quartz bed combustion of phosphorus-rich biomass fuels [J]. Energy and Fuels, 2011, 25(3): 937-947.

马孝琴, 骆仲泱, 秦建光, 等. 稻草低温燃烧过程中床料聚团机理的实验研究 [J]. 太阳能学报, 2008, 29(3): 374-378.

MA Xiaoqin, LUO Zhongyang, QIN Jianguang, et al. Mechanism of bed agglomeration for low temperature combustion of rice straw [J]. Acta Energiae Solaris Sinica, 2008, 29(3): 374-378.

KHAN A A, JONG A W, JANSENS B P J, et al. Biomass combustion in fluidized bed boilers: potential problems and remedies [J]. Fuel Processing Technology, 2009, 90(1): 21-50.

米铁, 陈汉平, 吴正瞬, 等. 生物质灰化学特性的研究 [J]. 太阳能学报, 2004, 25(2): 236-241.

MI Tie, CHEN Hanping, WU Zhengshun, et al. Chemistry characteristic study on biomass ash [J]. Acta Energiae Solaris Sinica, 2004, 25(2): 236-241.

徐婧. 生物质燃烧过程中碱金属析出的实验研究 [D]. 杭州: 浙江大学, 2006: 15-30.

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