A catalytic reactive distillation approach to high density polyethylene pyrolysis – Part 2 – Middle olefin production

Towards high-quality petrochemical feedstocks from mixed plastic packaging waste via advanced recycling: The past, present and future

“…In recent studies, a catalytic reactive distillation approach in HDPE pyrolysis was reported [298,299]. The authors developed an integrated reactor/separator system which promotes the production of light hydrocarbons by recycling the heavier boiling compounds back to the pyrolysis reactor.…”

Using Plastic Waste in a Circular Economy Approach to Improve the Properties of Bituminous Binders

“…The main aims of this work were the contribution to the reuse of waste resulting from a sustainable industry-chemical recycling (alternative feedstock or fuel production in the viewpoint of a Circular Economy of plastics [33]) and the improvements that the addition of this by-product can provide to specific bituminous binders (from a hard to a PMB). The most important conclusions reached in this study were: the confirmation of the possibility of taking advantage of the "waste" from the processing of an end-of-life plastic (in a circular economy perspective) with benefits for the binders in which it is mixed; and that it is compatible with other modifiers (namely, SBS) and functional additives, substantially improving some of the rheological properties of the blends that include them.…”

“…The most important conclusions reached in this study were: the confirmation of the possibility of taking advantage of the "waste" from the processing of an end-of-life plastic (in a circular economy perspective) with benefits for the binders in which it is mixed; and that it is compatible with other modifiers (namely, SBS) and functional additives, substantially improving some of the rheological properties of the blends that include them. The wax used in this research was obtained from an experimental system developed by co-authors Santos et al [33][34][35], where the main objective was to produce light gaseous hydrocarbons and/or liquid fuels (gasoline in the most part). This reaction system (described in Section 2.2.1) is used for the thermal pyrolysis of polymers, namely for HDPE from plastic waste (for example, from crushed plastic waste obtained in the mechanical and biological treatments (MBT), landfills or source-separated packaging waste PE).…”

Combined Activated Carbon with Spent Fluid Catalytic Cracking Catalyst and MgO for the Catalytic Conversion of Waste Polyethylene Wax into Diesel-like Hydrocarbon Fuels

“… 6 , 7 For this purpose, this polymer was converted into liquid fuels that mainly consisted of iso-paraffins and aromatics under an inert atmosphere at the operating temperature of 400–550 °C. 8 − 10 …”

“…Pyrolysis of waste plastic has attracted much attention for minimizing waste and has emerged as a promising technology for both waste management and energy production by thermochemical conversion of waste plastic, which is an efficient process for decomposing long-chain hydrocarbon polymers into smaller hydrocarbons and rearranging them by secondary reactions and further catalytic reactions to light hydrocarbons that can be used as liquid fuels. , Waste polyethylene wax (WPEW) can be converted into energy by the thermal degradation process, which favors the formation of lower hydrocarbon molecules that contain mainly alkanes in a wide range of carbon numbers into fuel and valuable chemicals. Moreover, the use of several catalysts in thermochemical processes, such as catalytic cracking, has been recognized to enhance both yield and good selectivity to a more appropriate boiling point range of hydrocarbon fuels through the thermal degradation of WPEW even at relatively low operating temperatures. , For this purpose, this polymer was converted into liquid fuels that mainly consisted of iso-paraffins and aromatics under an inert atmosphere at the operating temperature of 400–550 °C. − …”