THE BAFFLE V AND ERECT INFLUENCE ON THE DISTILATION SIEVE PLATE TOWARD MIXING SYSTEM AIR-WATER
ABSTRACT: The baffle influence
to the degree of liquid mixing in the plate and the pressure drop on the plate
has beenstudied in this research. The operational pressure in this research is
limited in the atmospheric pressure .Thedistillation column that used in the
research has 0.2m diameter and 1.4 m height with the distance betweentrays is
0.4 m. The research was carried out by to flows water into the column with the
flow rate of water are105 l/h, 149 l/h, 189 l/h and to flows air into the lower
of the column with superficial speed from 0 to 0.3 m/s.After steady state is
required the dry plate pressure and the pressure drop because the difference
between theheight of clear liquid and the height of foam is measured. The
mixing degree is determined by stimulusresponse method, i.e flows air into the
system, then give a tracer (i.e. NaCl saturated 20 CC) as a stimulatorthat
injected into the fuild to the basin. This experiment will give the data off
the concentrations and the time.The conclusion of this research is the pressure
drop by dry plate can provide the correlation hD = 8.34926( )( ) Lh GgUρρ22.
The value of residual pressure drop at the column of sieve plate without baffle
and with use abaffle in this study almost constant, i.e. 1-2 mm H2O. The
relation among the Peclet number, the F factor andthe flow rate of water can
expresse in empirical equation are : for without baffle Pe = 0.3837 F0.9254
Q-0.05229;Baffle V, Pe = 0.00005306 F-2.341 Q-1.005; vertical Baffle Pe =
0.004989 F-1.775 Q-0.4848. The presentation of thedifference of the clear
liquid’s height in the condition without use a baffle are 86,88% for the V
baffle,53,55% for the vertical baffle (105 l/h); 73,5% for V baffle, 50,64% for
the vertical baffle (149 l/h); 84,34 forV baffle, 65,58% for vertical baffle
(189 l/h). The value of EMV / EOG for the experiment without use a bffle
isgreater than the value of EMV / EOG fot the experiment use a baffle.
Penulis: Retno dewati
Kode Jurnal: jpkimiadd100200
