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KMID : 1024520150240020237
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Journal of the Environmental Sciences
2015 Volume.24 No. 2 p.237 ~ p.244
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A Study on Combustion Characteristics and Evaluating of RDFs(Refused Derived Fuels) from Mixture of Petrochemical Wastewater Sludge and Organic Matters
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Han Young-Rip
Choi Young-Ik
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Abstract
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This objectives of research are to figure out combustion characteristics with increasing temperature with petrochemical
sludge by adding wasted organic matters which are waste electric wire, anthracite coal and sawdust, and to exam heating value
and ignition temperature for using refused derived fuels(RDFs). After analyzing TGA/DTG, petrochemical sludge shows a
rapid weight reduction by vaporing of inner moisture after 170℃. Gross weight reduction rate, ignition temperature and
combustion rates represent 68.6%, 221.9℃ and 54.1%, respectively. In order to assess the validity of the RDFs, the
petrochemical sludge by adding wasted organic matters which are waste electric wire, anthracite coal and waste sawdust. The materials are mixed with 7:3(petrochemical sludge : organic matters)(wt%), and it analyzes after below 10% of moisture content. The ignition temperatures and combustion rates of the waste electric wire, anthracite coal and waste sawdust are 410.
6℃, 596.1℃ and 284.1℃, and 85.6%, 30.7% and 88.8% respectively. In heating values, petrochemical sludge is 3,600 kcal/kg.
And the heating values of mixed sludge (adding 30% of the waste electric wire, anthracite coal and waste sawdust) each
increase up to 4,600 kcal/kg, 4,100 kcal/kg and 4,300 kcal/kg. It improves the ignition temperatures and combustion rates by mixing petrochemical sludge and organic matters. It is considered that the production of RDFs is sufficiently possible by using of petrochemical sludge by mixing wasted organic matters.
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KEYWORD
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Petrochemical wastewater sludge, RDFs(refused derived fuels), Organic matters, Combustion rate, Heating value
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