Effect of HZSM-5 catalyst addition on the cracking of polyolefin pyrolysis waxes under FCC conditions

Coke formation and deactivation during catalytic reforming of biomass and waste pyrolysis products: A review

“…Pyrolysis does not pursue H2 production, but the pyrolysis volatiles can be subsequently valorized towards H2 in another step, and thus H2 production can benefit from the advances made in studies on the technology of plastics pyrolysis [43]. Pyrolysis of polyolefins at low temperature (500 ºC) allows the selective production of pyrolysis waxes (C21+) which can be fed into refinery units such as the catalytic cracker or the catalytic reformer, alone or together with the regular feed [36,[44][45][46]. The flexibility of pyrolysis processes also allows the co-treatment of plastic blends together with other materials, such as biomass [47].…”

Thermal and catalytic degradation of polyethylene wastes in the presence of silica gel, 5A molecular sieve and activated carbon

“…Different solid catalysts can be used for catalytic degradation: molecular sieves [7,8], alumina and aluminosilicates [9][10][11][12], silica gel [13,14], activated carbon [15,16] and fluid catalytic cracking (FCC) catalysts [16][17][18]. Zeolites are largely used in industry for the separation of hydrocarbons and for catalysis, specially zeolite 5A is used in the separation of linear from branched alkanes [19].…”

Kinetic modeling of catalytic conversion of methylcyclohexane over USY zeolites: Adsorption and reaction phenomena

“…Experiments are developed using a cycloparaffin model compound, methylcyclohexane (MCH) and a USY zeolite in a CREC fluidized riser simulator 21. a laboratory unit that has been extensively used in catalytic conversion and modeling studies 22, 23. This mini‐fluidized bed overcomes the technical problems of the standard microactivity test (MAT), allowing catalytic cracking to be developed under relevant FCC conditions in terms of partial pressures of gas oil (1.5–2 atm), temperatures (450–550°C), contact times (3–7 s, both for the hydrocarbons and the catalyst), and catalyst‐gas oil mass ratios (5).…”