Accelerate the Aging of Polymer as Energy-Saving Method Prior to the Pyrolysis Process

Abstract

Pyrolysis technology has appeared a long time ago, but it has not been widely recognized and used in the area of waste plastic/rubber management. The key reason is that the high energy consumption of pyrolysis is the most important problem that plagues the further development of pyrolysis. Prior to the pyrolysis of waste plastics/rubbers, in addition to dehydration and drying can save part of the energy consumption of pyrolysis, in this study, we have first reviewed and discussed high irradiance exposure to artificially accelerate the aging process of waste plastics/rubbers as pretreatment. The results from our preliminary experiments show that the pyrolysis process of the plastic that has undergone UV accelerated aging was speed up, accordingly to achieve saving energy in thermal cracking.

Recycling of Rubber Wastes as Fuel and Its Additives

“…Recently, an experiment by Jin Hu indicated that applying ultraviolet (UV) will accelerate the aging of granules of plastics prior pyrolysis process. This will contribute to total energy saving [106]. According to Mohajerani et al the life cycle assessment (LCA) analysis for recycling discarded rubber tires in building materials yielded certain advantages in terms of human health and environmental effect [107].…”

Degradation of high density polyethylene packaging by accelerated aging in sea water

“…Jinhu compared PP, HDPE, and PS aged with UV irradiation. PP withstood aging after 12 days, while HDPE and PS decomposed 17 . In another study, 18 the degradation of PP, LDPE, HDPE, and PS depended on the duration of irradiation and molecular weight.…”

“…PP withstood aging after 12 days, while HDPE and PS decomposed. 17 In another study, 18 the degradation of PP, LDPE, HDPE, and PS depended on the duration of irradiation and molecular weight. Greta 19 detect di-carboxylic acids and chemical species in the leaching analysis of LDPE, HDPE, and PS under artificial aging in seawater.…”