Joint International Conference on Long-term Experiments ...

Viscosity [◦E]
14
12
10
8
6
4
2
0
0 50 100 150 200 250
Temperature [◦C]
Diagram 1. The viscosity and temperature of fat ♦ viscosity of fat ■ water of fat
RESULTS AND DISCUSSIONS
• It is possible to store the fat before incineration only above the solidification point.
To ensure its proper state of aggregation at the time of spraying into the burner, the
temperature must be maintained at 90 ºC.
• Before beginning the industrial use of meat meal, the composition ash content of
the meat meal needs to be analysed to prevent corrosion. According to the
laboratory analyses, the ash content, should be 3% (m/m) residual, or less than that
after the burning, is 2.02 % (m/m).
• The meat meal should be burned together with another material, or by pelleting.
• In the 2 nd laboratory the meat meal after burning at 500 ºC was light grey which
indicates that the carbon content was destroyed at this temperature. In Hungary the
permissible burning temperature is 850ºC for wastes free of halogens.
• Based on the calculations a good fuel material is gained if the meat meal is burned
as released energy during the reaction is ~16 MJ/kg.
REFERENCES
Barna, Gy. (2002): Energy recovery from animals carcass in the rendering plants,
Recycling of wastes and second raw materials, 2: 53-61 p.
Boros, T. (2002): The BSE and energy recovery of animal waste, Recycling of wastes
and second raw materials, 4: 61-64 p.
Csokonay, J. (2002): The German industry of meat meals, Recycling of wastes and
second raw materials, 7: 49-59 p.
Connett, P. (2005): Zero Waste 2020 versus incineration, St. Lawrence University, 1-22
p.
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