Removal Of Chloride From Harbor Oily Sludge
By Electrostatic Desalting
Author(s)
Y.-J. Huang, C.-H. Tu & Y. C. Huang
Abstract
The object of this study is to remove the chloride from harbor oily waste by an
electrostatic desalting process before it is recovered. The pyrolysis kinetics of
emulsified desalted harbor oily sludge were also determined to realize the
properties of emulsified desalted harbor oily sludge in thermal treatment.
In experiments, the concentration of chloride in the harbor oily waste
decreased from 55.7 to 50.1 ppm by using the electrostatic desalting process
while the amount of desalter was 20 ppm and reaction time was 1 hour.
However, the desalting efficiency was increased by increasing the amount of
desalter. The chloride in the harbor oily waste would be decreased to 35.0 ppm
by adding 50 ppm of desalter during the reaction time in 20 minutes.
The three-stage pyrolysis of the harbor oily sludge was found in the thermal
gravimetric analysis (TGA) process. The equations for pyrolysis of the harbor
oily sludge in the first and second stages can be expressed as
dx1/dt (sec-1)=3.6×105(sec-1) exp(-16084(calmol-1)/R(calmol-1K-1)T(K))(1-x)0.46
(x denotes the reaction conversion) and dx2/dt=1.1×107exp(-21883/RT)(1-x)0.02,
respectively. The equations for pyrolysis of the emulsified desalted harbor oily
sludge in the first and second stages can be expressed as dx1/dt = 5.0×107
×exp(-17609/RT) (1-x)0.27 (x denotes the reaction conversion) and
dx2/dt=7.6×108exp(-26460/RT)(1-x)0.07, respectively.
Keywords: harbor oily sludge, chloride, emulsification, pyrolysis, kinetics.
Keywords
harbor oily sludge, chloride, emulsification, pyrolysis, kinetics.
Related Book
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