THERMO CHEMICAL RECYCLING OF AUTOMOBILE SHREDDER RESIDUE IN DFB GASIFIER

Övrigt konferensbidrag, 2019

Automobile Shredder Residue (ASR) is the fraction left after metal recycling of cars, and it is composed by a plastic mix with up to 50% of inorganics. The gasification of ASR was studied in the 2-4 MWth Chalmers Dual Fluidized Bed (DFB), aiming to convaert this diverse fraction into valuable products. Ash-rich fuel, such is ASR, make the bed rapidly be composed of ash. Thus, aiming to reduce process costs, two beds were evaluated: ASR-ash as bed and a steel production by-product, LDslag. Results showed that enrichment of the initial olivine bed with ARS-ash lead to the decrease of Carbon recovery, while the oxygen transport ability of the Iron present in LDslag enhanced the conversion but producing more CO2 yields. Both bed materials are viable options to valorise waste via DFB gasification, reducing the need of the addition of fresh bed.