Low-rank coal (LRC) pyrolysis assisted by biomass can realize the clean and efficient conversion utilization of LRC. The gas tar characteristics obtained from co-pyrolysis apple branch (AB) LRC at different stages were studied with TG-FTIR Py-GC/MS. It was found that process could be divided into four stages, weight loss rate AB+LRC 24.03% in second stage (194.60–404.63 °C), lower than calculat...

Researchers have thoroughly studied coal pyrolysis over a long period, while the analysis of volatile evolution and chemical structural changes solid char were carried out individually in most studies. In this work, we quantified reactions to explain different physical phenomena, such as softening caking properties, exhibited by ranks coals during pyrolysis. Four typical carbonaceous feedstocks...

Torrefaction is a thermo-chemical process that reduces the moisture content of wood and transforms it into a brittle, char-type material. The thermo-chemical process can reduce the mass of wood by 20-30% resulting in a denser, higher-valued product that can be transported more economically than traditional wood chips. Through torrefaction, wood may retain 90% of the energy value. This energy de...

Tar-rich coal has been widely concerned because of its high tar yield. Two kinds tar-rich coals were studied by Thermogravimetric-Mass spectrometer-Fourier transform infrared (TG-MS-FTIR) to obtain the pyrolysis characteristics. TG-MS-FTIR was used study mass loss, gaseous compounds evolution, and functional group information during pyrolysis. Mass loss is mainly caused water release macromolec...

Abstract With a self-developed laboratory pyrolysis device, the effects of materials particle size on yield Jinjie coal and lime co-pyrolysis products gas components were investigated. The results shows that raw material has significant effect process. decrease size, tar in product decreases, while increases, H 2 content increases. As same time, temperature distribution volatiles precipitation ...

A low rank coal was first used to investigate the synergistic effect of inherent and loaded potassium calcium ions on pyrolysis behaviors. The non-isothermal thermal analysis with higher heating rate medium temperature carried out by thermogravimetric analyzer for selected raw treated samples. Preliminary experiments conducted show that particle size smaller than 160 mm can eliminate heat mass ...