The thermal and catalytic cracking of several plastic wastes (polypropylene, polystyrene, polystyrene−polybutadiene) dissolved in refinery LCO has been studied a riser simulator, under operating conditions (catalyst, temperature, contact time, C/O ratio) that are similar to commercial FCC units. results the product distribution show interest this strategy, which may be integrated into operation for large-scale tertiary exploitation wastes.

To promote the chemical recycling of polyethylene terephthalate (PET), its valorization by hydrocracking was investigated. ease implementation at large-scale this route, PET coprocessed with vacuum gasoil (VGO), which is a benchmark feed industrial unit (10 and 90 wt %, respectively) hydrocracked using PtPd/HY catalyst. Furthermore, suitability PETs different natures origins to produce fuel-assimilable streams assessed. Specifically, one virgin, commercial, mechanically recycled were used,...

Tire valorization by catalytic cracking of scrap tires pyrolysis oil has been investigated in a riser simulator reactor under fluid (FCC) unit conditions using an equilibrated FCC catalyst. A parametric study done testing representative industrial unit. The extent the reactions quantified obtaining yields product lumps: dry gas, liquefied petroleum gases, naphtha, and light cycle oil. Moreover, detailed composition each lump obtained considering their chemical nature number carbon atoms....

The kinetic behavior has been studied for cracking a commercial feedstock on hybrid catalyst (with 5 wt % of HZSM-5 zeolite) made up 80 equilibrated in fluid catalytic (FCC) unit and 20 prepared based zeolite. A laboratory-scale reactor which allows operation under conditions similar to those FCC units used. From the analysis gases gasoline obtained 500−550 °C range, with contact times between 2 10 s catalyst/feedstock = 6, influence zeolite presence gas composition research octane number analyzed.

The upgrading of scrap tires pyrolysis oil (STPO) has been studied in order to produce high-quality alternative fuels, conceived as the second and third stage an industrially orientated valorization pathway for tires: pyrolysis, hydrotreating, hydrocracking. experiments have carried out a fixed-bed reactor under following experimental conditions: (i) hydrotreating: NiMo/Al2O3 catalyst; time on stream (TOS), 0–8 h; 300–375 °C; 65 bar; H2:oil ratio, 1000 (v/v); space time, 0–0.5 gcat h...

A study has been carried out on the use of hybrid catalysts (physical mixture a commercial catalyst for residue cracking with others prepared based HZSM-5 zeolites) in made up atmospheric distillation vacuum gas oil (VGO), latter being standard feed FCC (fluidized catalytic cracking) units. The 525−575 °C range, using subjected to severe steaming treatment riser simulator operating at laboratory scale under similar conditions those reactor. results show relevant role zeolite product...

Abstract A FCC phenomenological‐based model is presented in this study. This accounts for the behaviour of riser, stripper and regenerator. Both reactor regenerator are incorporated using detailed reaction kinetics. Catalyst regeneration allows both catalytic non‐catalyzed combustion CO to 2 . Overall, constituted by a set ordinary differential equations, relatively easy solve suitable steady unsteady state simulation units. The proposed avoids, as much possible, empirical expressions being...

A study has been carried out on the cracking of a mixture atmospheric residue (20 wt %) and VGO (vacuum gas-oil) from refinery, in riser simulator reactor under industrial unit conditions 525−575 °C range, with contact times between 3 12 s using commercial catalyst for residues. The yields compositions product streams (dry gas, LPG, gasoline, LCO, HCO, coke) have compared to those corresponding standard feed fluidized catalytic (FCC) unit. Catalyst accessibility renders it efficient...

The catalytic cracking of visbreaker naphtha under industrial conditions has been investigated, aiming the production an olefin-rich gas stream and high-quality gasoline suitable to be used in blending automotive fuels. runs have performed a fluid (FCC) riser simulator reactor following conditions: temperature, 500 550 °C; catalyst-to-oil mass ratio, 6 gcat goil–1; contact time, 3–12 s. Furthermore, effect properties two commercial equilibrium catalysts on products also assessed. Products...

Pursuing the aim of improving current waste plastics management strategy, we have investigated co-hydrocracking high-density polyethylene (HDPE) with vacuum gasoil (VGO) over a PtPd/HY catalyst for converting this blend into high-quality fuels. In particular, work was focused on assessing effects reaction time product yields and composition gas, naphtha light cycle oil (LCO) fractions, which determined by chromatographic means. The experimental runs were carried out in 100 mL semi continuous...

A study has been carried out on the effect of operating conditions (temperature and catalyst/feed ratio) yields products compositions lumps gases gasoline in cracking a mixture consisting heavy coker naphtha vacuum gas−oil (20 wt % naphtha). The runs have MAT (microactivity test) reactor (500−550 °C; C/O = 4−8). results, obtained for an equilibrated commercial catalyst refinery fluid catalytic (FCC) unit, compared with those corresponding to feed. presence feed inhibiting overcracking...

Catalytic cracking of waste plastics is an interesting option for selectively recovering raw materials or obtaining fuels. In this paper, a new recycling strategy proposed, which consists upgrading the waxes obtained by flash pyrolysis polyolefins in FCC (Fluidized Cracking) unit. The have been polypropylene at 500 ºC and they dissolved (20 wt% wax) vacuum gasoil (VGO) runs carried out CREC-UWO Riser Simulator Reactor (atmospheric pressure; 500-550 ºC; C/O = 5.5; contact times, 3-12 s). A...