Par tial oxidation reaction character istics of oil sludge (Ⅲ) – the influence of stage operations on the thermal treatment of oil sludge
Date Issued
2001-07-31
Date
2001-07-31
Author(s)
張慶源
DOI
892211E002094
Abstract
In the multistage thermal operation for treating
the oil sludge, one can propose a three-stage thermal
process combing the addition of effective additives,
pyrolysis and oxidative thermal decomposition of oil
sludge. The distillation characteristic of the first -
stage oil (condensates of gas at 298 K ) from the
pyrolysis of oil sludge at temperature T of 378 K for
4 hours exhibits the oil quality very close to diesel oil.
In the second stage (with the first stage as previously
mentioned), among the methods tested, the oil
produced by the addition of 10 wt. % CaO with 100
vol. % N2 from 378 to 653 K keeping at 653 K for 10
minutes gives the best distillation results. As for the
third stage, the operation without additives while with
20.95 vol. % O2 (with the second stage via 100 vol. %
N2 without additives) from 653 to 743 K keeping at
743 K for 30 minutes yields the liquid product
containing water. The oil portion of the oil product
obtained after subsequent oil-liquid separation is
better than gasoline. Meanwhile, with 20.95 vol. %
O2 while without additives, the amount of residues of
thermal treatment of oil sludge is significantly
reduced. However, if a liquid product without water
is desirable in the third-stage operation, then the
treatment via the addition of 10 wt. % CaO with 1.09
vol. % O2 (with the second stage via 100 vol. % N2
with 10 wt. % CaO) produces the oil with best
distillation characteristic.
Subjects
oil sludge
pyrolysis
additives
catalysis
stage operation
Publisher
臺北市：國立臺灣大學環境工程學研究所
Type
report
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