The nitrogen transformation behavior based on the pyrolysis products of wheat straw  

作　　者：Shun Guo Yunfei Li Shengwei Tang Tao Zhang 

机构地区：[1]School of Chemical Engineering,Sichuan University,Chengdu 610065,China

出　　处：《Chinese Journal of Chemical Engineering》2024年第7期58-65,共8页中国化学工程学报（英文版）

基　　金：supported by the National Key Research and Development Program of China(2019YFC1906700);the Natural Science Foundation of Sichuan,China(2022NSFSC0308).

摘　　要：In order to provide basic design parameters for the industrial pyrolysis process,the transformation behavior of nitrogen was investigated using wheat straw as raw material.The distributions of nitrogen in pyrolysis char,oil,and gas were obtained and the nitrogenous components in the products were analyzed systematically by X-ray photoelectron spectroscopy(XPS),pyrolysis-gas chromatography/mass spectrometry(Py-GC/MS)and thermogravimetric-Fourier transform infrared spectrometry(TG-FTIR).The nitrogen distribution ranges of the pyrolysis char,oil,and gas were 37.34%–54.82%,32.87%–40.94%and 10.20%–28.83%,respectively.More nitrogen was retained in char at lower pyrolysis temperature and the nitrogen distribution of oil was from rise to decline with increasing temperature.The most abundant N-containing compounds in three-phase products were pyrrole-N,amines,and HCN,respectively.In addition,the transformation mechanism of nitrogen from wheat straw to pyrolysis products was concluded.

关 键 词：PYROLYSIS Nitrogen transformation Wheat straw Py-GC/MS TG-FTIR 

分 类 号：TK6[动力工程及工程热物理—生物能]