食用菌废菌棒热解的产物分布与机理解析

张中玉; 王一迪; 王永康; 海浩; 陈坦; 王伟; 金军; 刘颖; 王英

doi:10.12030/j.cjee.201810075

环境工程学报

食用菌废菌棒热解的产物分布与机理解析

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张中玉, 王一迪, 王永康, 海浩, 陈坦, 王伟, 金军, 刘颖, 王英. 食用菌废菌棒热解的产物分布与机理解析[J]. 环境工程学报, 2019, 13(4): 1000-1008. doi: 10.12030/j.cjee.201810075

引用本文:

ZHANG Zhongyu, WANG Yidi, WANG Yongkang, HAI Hao, CHEN Tan, WANG Wei, JIN Jun, LIU Ying, WANG Ying. Pyrolysis product distribution and mechanism analysis of edible fungi residue[J]. Chinese Journal of Environmental Engineering, 2019, 13(4): 1000-1008. doi: 10.12030/j.cjee.201810075

Citation:

ZHANG Zhongyu, WANG Yidi, WANG Yongkang, HAI Hao, CHEN Tan, WANG Wei, JIN Jun, LIU Ying, WANG Ying. Pyrolysis product distribution and mechanism analysis of edible fungi residue[J]. Chinese Journal of Environmental Engineering, 2019, 13(4): 1000-1008. doi: 10.12030/j.cjee.201810075

食用菌废菌棒热解的产物分布与机理解析

1.
中央民族大学生命与环境科学学院，北京 100081
2.
东南大学能源与环境学院，南京 210096
3.
清华大学环境学院，北京 100084
基金项目:
国家自然科学基金资助项目51578312，41877188国家自然科学基金资助项目(51578312，41877188)

中央民族大学校级中央高校基本科研业务费专项资金项目

Pyrolysis product distribution and mechanism analysis of edible fungi residue

1.
College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
2.
School of Energy and Environment, Southeast University, Nanjing 210096, China
3.
School of Environment, Tsinghua University, Beijing 100084, China
Fund Project:

摘要: 我国食用菌废菌棒产生量大，利用率低，对环境污染严重，需要妥善处理。为制备高品质能源，在500~800 ℃温度范围内快速热解废菌棒，分析产物特征，解析热解机理。热解温度从500 ℃上升到800 ℃时，废菌棒的热解气质量分数从18.44%上升到50.45%，焦油的质量分数从49.06%下降到23.72%，生物炭的质量分数维持在30%左右，废菌棒的质量减量化率超过2/3；同时，热解气中H2、CO、CH4含量均有上升，CO2含量下降；焦油组分向更稳定的苯系物转变；生物炭炭化效果增强。研究结果表明，700 ℃为最佳热解温度，经过120 s即可反应完全。高温可以破坏羟基的结构，使其发生脱氢反应，碳氢键较早断裂，伯碳和仲碳大量裂解并迁移至焦油和热解气中，羰基在高温下迅速断链。
- 废菌棒 /
- 热解 /
- 热解气 /
- 焦油 /
- 生物炭 /
- 机理
Abstract: In China, edible fungi residue needs to be properly and urgently disposed because of its tremendous amount, low utilization and serious pollution. In order to obtain high-quality energy, the edible fungi residue was treated by a fast pyrolysis at the temperature range from 500 °C to 800 °C, and the product characteristics and pyrolysis mechanisms were analyzed. As the pyrolysis temperature rose from 500 °C to 800 °C, the mass ratio of pyrolysis gas to edible fungi residue increased from 18.44% to 50.45%, while that of tar decreased from 49.06% to 23.72%, and that of biochar remained at about 30%. The mass reduction ratio of edible fungi residue exceeded 2/3. The contents of H2, CO and CH4 in pyrolysis gas increased, while CO2 content decreased. The main components of tar converted to more stable benzene homologues. And the carbonization effect of the biochar was strengthened. The results showed that the optimal pyrolysis temperature was 700 ℃, and the pyrolysis reaction could complete within 120 s. High pyrolysis temperature could destroy the hydroxyl structure, the dehydrogenation reactions occurred, then the hydrocarbon bond broke earlier, the primary and secondary carbons cracked largely and migrated into tar and pyrolysis gas, the bonds in the carbonyl groups will be rapidly disintegrated.
- edible fungi residue /
- pyrolysis /
- pyrolysis gas /
- tar /
- biochar /
- mechanism

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食用菌废菌棒热解的产物分布与机理解析

1. 中央民族大学生命与环境科学学院，北京 100081
2. 东南大学能源与环境学院，南京 210096
3. 清华大学环境学院，北京 100084

基金项目:

国家自然科学基金资助项目51578312，41877188国家自然科学基金资助项目(51578312，41877188)

中央民族大学校级中央高校基本科研业务费专项资金项目

关键词:

废菌棒 /
热解 /
热解气 /
焦油 /
生物炭 /
机理

摘要: 我国食用菌废菌棒产生量大，利用率低，对环境污染严重，需要妥善处理。为制备高品质能源，在500~800 ℃温度范围内快速热解废菌棒，分析产物特征，解析热解机理。热解温度从500 ℃上升到800 ℃时，废菌棒的热解气质量分数从18.44%上升到50.45%，焦油的质量分数从49.06%下降到23.72%，生物炭的质量分数维持在30%左右，废菌棒的质量减量化率超过2/3；同时，热解气中H2、CO、CH4含量均有上升，CO2含量下降；焦油组分向更稳定的苯系物转变；生物炭炭化效果增强。研究结果表明，700 ℃为最佳热解温度，经过120 s即可反应完全。高温可以破坏羟基的结构，使其发生脱氢反应，碳氢键较早断裂，伯碳和仲碳大量裂解并迁移至焦油和热解气中，羰基在高温下迅速断链。

English Abstract

Pyrolysis product distribution and mechanism analysis of edible fungi residue

1. College of Life and Environmental Sciences, Minzu University of China, Beijing 100081, China
2. School of Energy and Environment, Southeast University, Nanjing 210096, China
3. School of Environment, Tsinghua University, Beijing 100084, China

Fund Project:

Keywords:

Abstract: In China, edible fungi residue needs to be properly and urgently disposed because of its tremendous amount, low utilization and serious pollution. In order to obtain high-quality energy, the edible fungi residue was treated by a fast pyrolysis at the temperature range from 500 °C to 800 °C, and the product characteristics and pyrolysis mechanisms were analyzed. As the pyrolysis temperature rose from 500 °C to 800 °C, the mass ratio of pyrolysis gas to edible fungi residue increased from 18.44% to 50.45%, while that of tar decreased from 49.06% to 23.72%, and that of biochar remained at about 30%. The mass reduction ratio of edible fungi residue exceeded 2/3. The contents of H2, CO and CH4 in pyrolysis gas increased, while CO2 content decreased. The main components of tar converted to more stable benzene homologues. And the carbonization effect of the biochar was strengthened. The results showed that the optimal pyrolysis temperature was 700 ℃, and the pyrolysis reaction could complete within 120 s. High pyrolysis temperature could destroy the hydroxyl structure, the dehydrogenation reactions occurred, then the hydrocarbon bond broke earlier, the primary and secondary carbons cracked largely and migrated into tar and pyrolysis gas, the bonds in the carbonyl groups will be rapidly disintegrated.

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食用菌废菌棒热解的产物分布与机理解析

Pyrolysis product distribution and mechanism analysis of edible fungi residue

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食用菌废菌棒热解的产物分布与机理解析

English Abstract

Pyrolysis product distribution and mechanism analysis of edible fungi residue

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