Comparison of properties for corn straw with and without pith

LI Huiyuan; HUANG Siwei; ZHOU Dingguo

doi:10.11833/j.issn.2095-0756.2013.02.015

Volume 30 Issue 2

Mar. 2013

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LI Huiyuan, HUANG Siwei, ZHOU Dingguo. Comparison of properties for corn straw with and without pith[J]. Journal of Zhejiang A&F University, 2013, 30(2): 251-256. doi: 10.11833/j.issn.2095-0756.2013.02.015

Citation:

LI Huiyuan, HUANG Siwei, ZHOU Dingguo. Comparison of properties for corn straw with and without pith[J]. Journal of Zhejiang A&F University, 2013, 30(2): 251-256. doi: 10.11833/j.issn.2095-0756.2013.02.015

Comparison of properties for corn straw with and without pith

doi: 10.11833/j.issn.2095-0756.2013.02.015

1.
College of Wood Science and Technology，Nanjing Forestry University，Nanjing 210037，Jiangsu，China

More Information

Corresponding author: ZHOU Dingguo
Received Date: 2012-04-26
Rev Recd Date: 2012-09-12
Publish Date: 2013-04-20

Abstract

To determine if corn （Zea mays） stalks without pith could be used to make pellet fuel，characteristics of corn straw with and without pith，including chemical composition and combustion kinetics parameters，were compared. Results showed that corn stalk burning could be divided into three stages: water evaporation，volatile combustion，and burning of fixed carbon. Corn stalk with pith had higher calorific value （16 536 Jg－1） and combustion kinetics parameter. However，the melting point of corn straw ash with pith was lower. It showed that the deformation temperature of corn straw ash was 1 173 ℃ and the melting point was 1 258 ℃；whereas without pith the deformation temperature was 1 285 ℃ and the melting point was 1 441 ℃. Overall，the results showed that corn straw with pith exhibited higher lignin content than without pith，but a lower cellulose content. Corn straw with pith had lower fixed carbon content，calorific value，activation energy，and frequency factor，but higher ash melting point and softening temperature. Thus，corn straw would be an environmental-friendly fuel，as its low calorific value was similar to bituminous coal with an S content only 1/2－1/3 that of coal，and corn straw with pith seemed more suitable for making pellet fuel，which could be used as a new energy source for a wood-based panel factory.［Ch，4 fig. 7 tab. 13 ref.］
- corn straw,
- calorific value,
- combustion kinetics parameter,
- ash melting point

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Comparison of properties for corn straw with and without pith

1. College of Wood Science and Technology，Nanjing Forestry University，Nanjing 210037，Jiangsu，China

Corresponding author: ZHOU Dingguo

Received Date: 2012-04-26

Rev Recd Date: 2012-09-12

Publish Date: 2013-04-20

Key words:

Abstract: To determine if corn （Zea mays） stalks without pith could be used to make pellet fuel，characteristics of corn straw with and without pith，including chemical composition and combustion kinetics parameters，were compared. Results showed that corn stalk burning could be divided into three stages: water evaporation，volatile combustion，and burning of fixed carbon. Corn stalk with pith had higher calorific value （16 536 Jg－1） and combustion kinetics parameter. However，the melting point of corn straw ash with pith was lower. It showed that the deformation temperature of corn straw ash was 1 173 ℃ and the melting point was 1 258 ℃；whereas without pith the deformation temperature was 1 285 ℃ and the melting point was 1 441 ℃. Overall，the results showed that corn straw with pith exhibited higher lignin content than without pith，but a lower cellulose content. Corn straw with pith had lower fixed carbon content，calorific value，activation energy，and frequency factor，but higher ash melting point and softening temperature. Thus，corn straw would be an environmental-friendly fuel，as its low calorific value was similar to bituminous coal with an S content only 1/2－1/3 that of coal，and corn straw with pith seemed more suitable for making pellet fuel，which could be used as a new energy source for a wood-based panel factory.［Ch，4 fig. 7 tab. 13 ref.］

Comparison of properties for corn straw with and without pith

doi: 10.11833/j.issn.2095-0756.2013.02.015

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Related

Proportional views