Citation: WANG Lin-zheng, LUO Yong-hao, ZHANG Rui-zhi, DENG Rui-qu. Influence of oxygen on nitrogen distribution and transformation during straw pyrolysis[J]. Journal of Fuel Chemistry and Technology, ;2017, 45(12): 1441-1448. shu

Influence of oxygen on nitrogen distribution and transformation during straw pyrolysis

Institute of Thermal Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

Corresponding author: LUO Yong-hao, yhluo@sjtu.edu.cn
Received Date: 16 August 2017
Revised Date: 20 October 2017

Fund Project: The project was supported by STCSM Scientific Project(14JC1403200, 16DZ1202902)STCSM Scientific Project 14JC1403200STCSM Scientific Project 16DZ1202902

Figures(4)

To study influence of oxygen on distribution and transformation of fuel-N, pyrolysis experiments of straw were conducted in a two stage fixed bed reactor simulating the run conditions of grate firing. The conversion pathway of fuel-N was depicted by studying types and content of N-containing compounds in tar by GC-MS, and effect of oxygen was analyzed. Compared with inert atmosphere, tar and char yields decrease with introduction of oxygen, which leads to a decrease of N-distribution in tar and char and increase in gas fractions. Protein and amino acids are the main N-containing components in fuel, which initially go through a series of primary reactions, producing primary tar components like amides and amines. Then the primary tar goes through secondary reactions to yield secondary tar components including nitriles and N-heterocyclic compounds. In the presence of oxygen, content of primary tar components like amides and amines decrease significantly, and secondary tar components like nitriles and N-heterocyclic compounds increase.
- straw,
- oxidative pyrolysis,
- N-distribution,
- conversion pathway
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