Insight into synergistic effect of co-pyrolysis of low-rank coal and waste polyethylene with or without additives using rapid infrared heating

Slow Pyrolysis Products Derived from Extrudates Produced from Discard Coal Fines and Recycled Plastics as Binders

“…This boiling range also correlates with that of light waxes (343–525 °C or C 21 –C 40 ) when observing paraffin standards . The melted plastics within the heated extrudates can suppress the escape of volatiles produced from copyrolysis, resulting in cross-linking reactions between radicals from plastics and coal, producing a large condensable product fraction with higher boiling points . Arabiourrutia et al reported a light wax fraction around 50% for pyrolysis waxes produced from both LDPE and PP at temperatures between 400 and 600 °C which correlates with the results reported in this study.…”

“…The most prominent difference between the composition of produced condensable products from coal compared to that of the plastics is that condensable products derived from coal contain a larger fraction of aromatic components compared to either plastic type. , Coal is a heterogeneous substance, and the condensable pyrolysis products contain a variety of aromatic components. The complex mixture of aromatic components has various functional groups (phenols, naphthalenes, benzenes, etc.)…”

“…Furthermore, the available literature on the copyrolysis of coal and plastic mainly focuses on kinetic studies done using thermogravimetric analysis (TGA) for pyrolysis. ,,, Few studies have investigated the copyrolysis products and even fewer focused on characterizing all the produced products. Wu et al investigated the fast pyrolysis products and yields of blends of low-rank coal combined with polyethylene without additives (WPE) and polyethylene with additives (BPE) (1:0, 9:1, 7:3, 1:1, and 0:1). A wide range of synergistic effects in both the yields and product characterization were reported when pyrolyzing 2 g blends and increasing the temperature from ambient to 450–600 °C using a fast heating rate (20 °C/s).…”

Experimental and computational studies of polycarboxylate dispersant effect on the properties of low‐rank coal water slurries

“…Low-rank coal (including lignite and sub-bituminous coal) is a globally abundant fossil energy resource that has attracted increasing scientific and engineering attention with the goal of achieving clean and efficient utilization. [1][2][3][4] The gasification of low-rank coal is a utilization strategy that shows good promise for achieving efficient and clean energy. 5 Compared with dry-powder feeding, wet-coal water slurry (CWS) feeding demonstrates superior performance and better environmental friendliness due to the lower emission of harmful gases and dust in the gasification process with CWS.…”

“…Low‐rank coal (including lignite and sub‐bituminous coal) is a globally abundant fossil energy resource that has attracted increasing scientific and engineering attention with the goal of achieving clean and efficient utilization 1–4 . The gasification of low‐rank coal is a utilization strategy that shows good promise for achieving efficient and clean energy 5 .…”