热解温度与碱金属对生物质热解碳烟氧化活性的影响

李艳 1; 2; 谭厚章 1; 刘原一 2; 王学斌 1

doi:10.7652/xjtuxb202008003

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热解温度与碱金属对生物质热解碳烟氧化活性的影响

更新时间：2025-07-09

- 热解温度与碱金属对生物质热解碳烟氧化活性的影响
- Influences of Formation Temperature and Potassium Salts on Oxidation Reactivity of Soot from Biomass Pyrolysis
- 西安交通大学学报 2020年54卷第8期页码：20-26+49
- 作者机构：
  
  1. 西安交通大学热流科学与工程教育部重点实验室,西安,710049
  2. 陕西秦龙电力股份有限公司,西安,710075
- 作者简介：
- 基金信息：
  
  : 2020-02-09。作者简介: 李艳(1984—),女,博士生;谭厚章(通信作者),男,教授,博士生导师。基金项目: 国家自然科学基金资助项目(51876162)
- DOI：10.7652/xjtuxb202008003
  中图分类号： TK123
- 网络首发：2020-08-10，
  
  纸质出版：2020
- 稿件说明：
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李艳 1, 2, 谭厚章 1, 等. 热解温度与碱金属对生物质热解碳烟氧化活性的影响[J]. 西安交通大学学报, 2020,54(8):20-26+49.

Influences of Formation Temperature and Potassium Salts on Oxidation Reactivity of Soot from Biomass Pyrolysis[J]. 2020, 54(8): 20-26+49.
李艳 1, 2, 谭厚章 1, 等. 热解温度与碱金属对生物质热解碳烟氧化活性的影响[J]. 西安交通大学学报, 2020,54(8):20-26+49. DOI： 10.7652/xjtuxb202008003.

Influences of Formation Temperature and Potassium Salts on Oxidation Reactivity of Soot from Biomass Pyrolysis[J]. 2020, 54(8): 20-26+49. DOI： 10.7652/xjtuxb202008003.

摘要

为研究生物质碳烟的氧化反应活性

在沉降炉反应器中于1 000、1 100、1 200、1 300 ℃温度下对麦秆和木屑2种生物质进行了热解

获得了生物质热解碳烟样品。采用热重分析法测试了不同热解温度下产生的碳烟的氧化活性

研究了热解温度、生物质中碱金属对碳烟氧化活性的影响。结果表明:随着热解温度的升高

2种生物质碳烟的氧化活性表现出不同趋势

即木屑碳烟的氧化活性提高

而麦秆碳烟的氧化活性降低; 麦秆相对木屑具有显著高的碱金属(主要为KCl)含量; 水洗碳烟的氧化活性明显降低

表明KCl颗粒可以显著促进碳烟的氧化; X射线衍射(XRD)及粒径分析显示

随着热解温度的提高

2种生物质碳烟的石墨化程度提高

单个颗粒的几何平均粒径变小。因此认为

木屑碳烟的活性主要受碳烟粒径的影响

而麦秆碳烟由于其中含有明显多的碱金属颗粒(绝大部分为KCl)

其活性受碱金属盐和粒径、内部结构等的综合作用。

Abstract

Straw and woody biomasses are pyroly-ed in an entrained flow reactor at 1 000-1 100-1 200-1 300 - to generate soot particles and to study the oxidation reactivity of soot produced from biomass. Thermogravimetric analysis is used to study the influences of pyrolysis temperature and potassium salts on oxidation reactivity of soot particle. Results show that the oxidation activity of soot from two biomasses has different trends with the increase of pyrolysis temperature

and the oxidation activity of woody soot increases while that of straw soot decreases. The potassium content(mainly KCl)of straw is significantly higher than that of woody biomass. The significantly reduced oxidation activity of water-washed soot indicates that KCl can significantly promote soot oxidation. X-ray diffraction and particle si-e analysis show that the degree of graphiti-ation of both biomass soots increases with the increasing of pyrolysis temperature. Meanwhile the geometric mean particle si-e of primary

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