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2 Polish Journal of Chemical Technology

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Recovery of aluminium from multi-component packaging using a fluidised bed reactor

100%

Żukowski W. , Baron J. , Zabagło J. , Kandefer S. , Olek M.

Polish Journal of Chemical Technology

2008

tom 10

nr 4

40-44

This study presents the use of fluidised bed combustion to produce thermal energy, aluminium recovery and the reduction of the Tetra Pak and Combibloc packaging waste stream. Fluidisation and the pneumatic transport, which take place in the same apparatus, allow recovering bits of the aluminium foil from the combustion zone. The limited time spent in the high temperature zone leads to a high content of free metal in the solids separated in the ash trap and cyclone. Other solid products are practically chemically inert and may be disposed in a landfill of municipal or inert wastes.

The use of the fluidized bed boiler for the disposal of the multi-material packaging waste

100%

Zabagło J. , Baron J. , Olek M. , Kandefer S. , Żukowski W.

tom 12

nr 4

19-21

The paper presents the results of the disposal of packaging waste from two companies: Tetra Pak and Combibloc, carried out in a fluidized bed boiler of rated thermal power 0.5 MW. The material introduced into the fluidized bed boiler underwent thermal and mechanical degradation in a sand bed of the temperature between 750 and 850°C. The process proceeds auto-thermally, without the need of additional fuel. The appropriately chosen fluidization parameters caused the separation of the solid products of combustion from the deposit material. Presence of aluminum, part of it in an un-oxidized form, was confirmed in separated dust. The gaseous products of combustion contained the traces of oxides of nitrogen and sulfur, mainly originating from the remnants of food products contained in the packaging. However, the concentration of these oxides met the requirements of emission standards.