IR-Method for Determining the Water Contents in a Water-Oil Emulsion Flow

In order to produce a water/heavy fuel oil emulsion (W/HFO) with different water contents to cover the daily needs of a fire tube boiler or a water tube boiler, a special homogenizer is designed, constructed and tested. The produced emulsion is characterized and compared with the pure HFO properties. It is found experimentally in fire tube boiler that, the use of W/HFO emulsion with 8% of water content (W0.08/HFO0.92) instead of HFO leads to a saving rate of 13.56% in HFO. For explaining the obtained energy saving the term “equivalent heat value (EHV) of the W/HFO emulsions”, defined as the ratio of the W/HFO emulsion net calorific value to the HFO content in the emulsion, is used. Based on direct measurements, provided in this work, it was found that the equivalent heat value (EHV) increases with the water content in the water/heavy fuel oil (W/HFO). It reaches 1.06 times of HFO net calorific value at water content of 22.24%. The obtained, in the present work, experimental results demonstrate the dependence of the emulsion EHV on its water content. These results are in agreement with the results of other authors. Therefore, the contribution of water droplets in the emulsion combustion is verified. It is found experimentally that, the emitted CO, SO2 and H2S gases from the fire tube boiler chimney decreases by 5.66%. 3.99% and 48.77% respectively in the case of (W0.08/HFO0.92) emulsion use instead of HFO.

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Dynamic blocking of W/O emulsion in a radially expanding flow in Hele-Shaw cell

Proceedings of the Mavlyutov Institute of Mechanics ◽

10.21662/uim2006.1.018 ◽

2006 ◽

Vol 4 ◽

pp. 200-206

Author(s):

A.A. Rakhimov ◽

A.K. Akhmetov

Keyword(s):

Pressure Drop ◽

Capillary Channel ◽

Oil Emulsion ◽

Ultrasonic Fields ◽

Emulsion Flow ◽

Dynamic Blocking ◽

Hele Shaw Cell

It is studied the changing of structure of the radial expanding flow of highly concentrated stable reverse water-oil emulsion in a flat capillary channel. The effect of dynamic blocking is discovered, which is that despite the permanent pressure drop between the center and outer forming cells, the emulsion flow with time stands still. Microflows are shown in a state of ”blocking“. The various methods of influencing the system in a state of ”blocking“ are tested. It is found that the movement is resumed in a strong ultrasonic fields.

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Performance of Electrostatic Field in Continuous Demulsification of Simulated Crude Oil Emulsion

Jurnal Teknologi ◽

10.11113/jt.v74.4705 ◽

2015 ◽

Vol 74 (7) ◽

Author(s):

Norasikin Othman ◽

Tan Kah Sin ◽

Norul Fatiha Mohamed Noah ◽

Ooi Zing Yi ◽

Norela Jusoh ◽

...

Keyword(s):

Crude Oil ◽

Flow Rate ◽

Oil Quality ◽

Market Price ◽

Process Equipment ◽

Electrical Method ◽

Oil Emulsion ◽

Emulsion Flow ◽

Span 80 ◽

Phase Water

Water-in-oil (W/O) emulsion is always formed in crude oil production. In most cases, the presence of water droplets in crude oil is undesirable because they can cause several problems such as corrosion of process equipment and a decrease in crude oil quality, as well as its market price. In this research, a simulated W/O emulsion that consists of kerosene as a continuous oil phase, water as a dispersed phase and SPAN 80 as an emulsifier has been formulated. The feasibility of using Span 80 for W/O emulsion formation and emulsion stability has been investigated. Stability test proved that the emulsions with 2 w/v % of Span 80 were stable and no separation was observed for the first 48 hours of gravitational settling. Besides, this research also aimed to study the effects of several parameters such as frequency, emulsion flow rate, voltage, water content in emulsion, and emulsifier concentration on the demulsification performance under high voltage electric field. The results showed that the best demulsification performance was 90% using electrical method at 1000 Hz of frequency, 10kV of voltage, 0.4 mL/s of emulsion flow rate, 2 w/v % of emulsifier, and 30 % of water portion of simulated crude oil.

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