Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Surfactant


Effect of Surfactant Additives on Phase Inversion in Oil-Water Pipe Flow System

A.A. Alwasiti; N.M. Farhan

Engineering and Technology Journal, 2017, Volume 35, Issue 2, Pages 106-110

This research investigates the effect of surfactant additives on phase inversion point in the oil-water flow in horizontal pipe. Two types of surfactants were used in the experiments; anionic type (sodium lignosulfonate (SLS)) at 200 ppm and cationic type (hexadecyltrimethyl ammonium bromide (CTAB)) at 100 ppm. The experiments were carried at mixture velocities (0.8, 1, 1.9 and 2.3) m/s. The results showed that the phase inversion points are unaffected by surfactant addition or velocity at low mixture velocities while they shifted downward at high mixture velocities. The experiments show also that anionic surfactant addition caused a forward shifting in phase inversion point and downward shifting in the addition of cationic surfactant at high mixture velocities.

Upgrading of Basrah-Kirkuk Blend Crude Oil Through Mechanical-Acoustical Effect and (Labs) as Surfactant

Adel Sharif Hamadi; Gufran Raheem; Salam Hussain

Engineering and Technology Journal, 2012, Volume 30, Issue 16, Pages 2778-2791

Non-Convential method has been used in this study for upgrading mixture of Basrah-
Kirkuk crude oil through mechanical - acoustical effect using hydrodynamical coaxial
turbo machine type Rotary Pulsation Apparatus (RPA) implementing ultra-high
reliability in shearing rotor-stator operation.
The analysis of the crude oil after treatment in RPA showed that on increasing the
rotation time from 5 to 10 min with rotor speed of 7610 rpm, leading to an increase in the
total yield of light and intermediate petroleum cuts from 30 to 39 vol%, with an increase
in API gravity from 29 to 40, reduce flash point from 75 to 54.C and reduce pour point
from -10 to -32.C.
The results also showed that, adding LABS surfactant leads to a further increase in API
gravity to 45, reduced flash point to 50.C, reduced pour point to -36 .C and increased
yield of light and intermediate fraction to 40 vol% within 10 min and 7610 rpm

The Effect of Surfactant Concentration on the Rate of CO2 Absorption by Carbonate Solution in Packed Tower

Fadil H. Faraj; Alyaa K. Mageed

Engineering and Technology Journal, 2009, Volume 27, Issue 6, Pages 1134-1142

Absorption of carbon dioxide from gaseous mixture (carbon dioxide, air) was
studied by using Carbonate Solution (Na2CO3) in a counter-current packed column (7.5 cm
id, 1.70 m height), packed with glass rashing rings of 1.8 cm i.d to a depth of 1.1 m.
The effect of Surfactant concentration (dodecyl benzene sulfuric acid sodium
(DBS))(0.5, 1.5, 2.5gm/lit.), gas mass flux (0.05, 0.075, 0.1 kg/m2.sec) and liquid mass flux
(kg/m2.sec) on the absorption rate of carbon dioxide and mass transfer coefficient was
studied at constant carbonate concentration (0.3 kmol/m3), inlet carbon dioxide
concentration(0.08, Y2=0.086 mol CO2/mol air), ambient temperature and atmospheric
pressure. The results show that the absorption rate tends to increase with increasing gas and
liquid flow rate. Mass transfer coefficient (KG.a) increases with increasing liquid flow rate
and slightly change with increasing gas flow rate. Increasing surfactant concentration
(decreasing surface tension) leads to decrease the absorption rate and mass transfer
coefficient.