Fixed bed downdraft gasification of paper industry wastes
Data(s) |
01/03/2013
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Resumo |
The two main wastes generated from secondary fibre paper mills are rejects (composed mainly of plastics and fibres) and de-inking sludge, both of which are evolved from the pulping process during paper manufacture. The current practice for the disposal of these wastes is either by land-spreading or land-filling. This work explores the gasification of blends of pre-conditioned rejects and de-inking sludge pellets with mixed wood chips in an Imbert type fixed bed downdraft gasifier with a maximum feeding capacity of 10kg/h. The producer gases evolved would generate combined heat and power (CHP) in an internal combustion engine. The results show that as much as 80wt.% of a brown paper mill's rejects (consisting of 20wt.% mixed plastics and 80wt.% paper fibres) could be successfully gasified in a blend with 20wt.% mixed wood chips. The producer gas composition was 16.24% H, 23.34% CO, 12.71% CO 5.21% CH and 42.49% N (v/v%) with a higher heating value of 7.3MJ/Nm. After the removal of tar and water condensate the producer gas was of sufficient calorific value and flow rate to power a 10kWe gas engine. Some blends using rejects from other mill types were not successful, and the limiting factor was usually the agglomeration of plastics present within the fuel. |
Formato |
application/pdf |
Identificador |
http://eprints.aston.ac.uk/18684/1/Fixed_bed_downdraft_gasification_of_paper_industry_wastes.pdf Ouadi, M.; Brammer, J.G.; Kay, M. and Hornung, A. (2013). Fixed bed downdraft gasification of paper industry wastes. Applied Energy, 103 , pp. 692-699. |
Relação |
http://eprints.aston.ac.uk/18684/ |
Tipo |
Article PeerReviewed |