Characterization and coincineration of waste in a paper milla case study
DOI:
https://doi.org/10.15626/Eco-Tech.2007.076Abstract
A considerable amount of Plastic & Paper Waste (PPW) is accumulated in paper
manufacturing and recycling mill during the pulping process, The composition of the waste
shows that it is a valuable waste-fuel, however, with high moisture content. This waste is
landfilled at the landfill site in the vicinity of the paper mills and has caused considerable
problems in the form of leachate, In order to examine the operational and environmental
effects of co-incineration of PPW with woodchips, coal and sludge, a study was undertaken at
Lund University, A detailed and complete analysis and characterization of the waste was
included in the study, Throughout 14 hours full-scale operation in a 40 MW circulating
fluidized bed combustor (CFS), samples of gas, particulate matters, ashes and slag were taken
at different parts of the incinerator. All the process data, continuous flue-gas data, the
temperature and humidity were monitored throughout the test via a data acquisition system
and displayed on a real-time basis,
The results of the gas analysis show some increase in PCB and PCDD/PCDF in the flue-gas
compared with the normal operation (incineration of woodchips +sludge+ coal as fuel). The 3 3
values (PCB=0.053ng/m , TCDDcquiv=0.009ng/m ) are, however, still far below that of the 3 limit (0.1 ng/m ). The average of total hydrocarbons (THC) in the emission gas was found to
be 35 ppm based on dry gas, which was three times higher than normal operation. Analysis of
the ash shows a high concentration of soluble chlorine in comparison with normal operation
(2500 ppm vs, 500 ppm) and this is due to the high concentration of chlorine in the tested
fraction of PPW which is about 3 wt.%. The concentration of heavy metals in the ash and
slag was found to be at the same level as normal operation.
Metrics
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Copyright (c) 2007 Feraydoon Tamaddon, William Hogland
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