Catalytic conversion of commingled polymer waste into chemicals and fuels over spent FCC commercial catalyst in a fluidised-bed reactor

Influence of FCC catalyst steaming on HDPE pyrolysis product distribution

“…The results obtained are similar to those presented in this paper for the fresh catalyst. At [22] studied the catalytic pyrolysis of polypropylene over FCC spent catalyst in a fluidized bed reactor. Operating at 450 8C they obtained 34.2 wt% gases and 56 wt% liquids and 9.1 wt% coke and residue.…”

“…Therefore, the use of equilibrated fluid catalytic cracking (FCC) catalysts in the pyrolysis process would be economically advantageous, as the FCC process generates huge quantities of spent catalyst that is still active for other processes. There are a number of studies dealing with the pyrolysis of different kinds of plastics (low density polyethylene, high density polyethylene (HDPE), polypropylene, polystyrene and their mixtures) over FCC catalysts, in thermobalance [17,18], batch reactors [16,19,20], fixed bed reactors [21] and fluidized bed reactors [22][23][24].…”

Acid-catalyzed conversion of chlorinated plastic waste into valuable hydrocarbons over post-use commercial FCC catalysts

“…A more interesting is that of adding plastic waste into the FCC process, under suitable process conditions with the use of zero value of spent FCC catalysts [21][22][23][24][25] performed on a lab-scale cracking, a large number of polymers can be economically converted into valuable hydrocarbons. Potential concepts have been investigated in our group using a catalytic fluidized-bed reactor to study the product distribution and selectivity of catalytic degradation of several different textiles of post-consumer plastic wastes without PVC mixture previously [26][27][28]. In these studies, the catalysts increase significantly the commercial potential of a recycling process based on catalytic degradation, as cracking catalysts could cope with the conversion of plastic waste co-fed into a refinery FCC unit.…”

Polyolefins and the environment

“…Similarly, survey of interaction among the other factors indicated that there is not a significant interaction [151]. The effects of catalysts on the catalytic degradation of polymer have also been investigated by contacting melted polymers with catalyst in fixed bed reactors [152,153], heating mixtures of polymer, and catalyst powders in reaction vessels [154,155], and passing the products of polymer pyrolysis through fixed bed reactors containing cracking catalysts [156].…”