Industries and Solutions
Demulsifier
Release time:
2020-03-05 10:59
Solution
Advantages of Shunzi mechanical device used for demulsifier injection:
High measurement accuracy
No leakage, tight sealing
The 900 pump head diaphragm spring loaded return stroke has excellent inlet suction performance
Convenient diaphragm replacement
All moving parts move under the protection of hydraulic oil lubrication
Compact and modular design, it can be installed and used in a limited space (such as FPSO pontoon)
Long service life (usually more than 10,000 hours of continuous operation)
The use of "sandwich type" sandwich diaphragm avoids the costly losses caused by production shutdown: even if one layer of the diaphragm is damaged, the operation can continue until the after-sales service reaches the site or the work flow is suitable for maintenance.
Background description
Process description
Demulsifier is a kind of mixture, which is dispersed in the emulsion during the injection process. It can diffuse to the interface of oil and water to stabilize and solidify. They can play a variety of functions as follows:< /p>
Reduce and prevent static electricity, which causes each droplet to repel each other.
Change the wettability of particles adsorbed at the oil-water interface.
Change the stickiness of the boundary level
Demulsification process description
The demulsifier concentrates on the surface of the micro-droplets and “can concentrate them”. The water content in the micro-droplets gradually increases. Since water droplets can refract light, when they are separated, the visible effect is that the oil layer becomes brighter. The water droplets are finally concentrated and separated.
Why demulsifiers are mixtures
Demulsifiers usually provide the following comprehensive effects:
Flocculation
Droplet separation
Wetting agent
A single substance cannot have this comprehensive characteristic, so the demulsifiers on the market are usually a mixture of several substances.
The most widely used method is to use a demulsifier injection system to inject at the wellbore and the collection point.
Recommended for drilling and injection:
The pump used is small and the required cost is low.
The earlier the moisture is removed, the lighter the degree of corrosion (the lower the maintenance cost)
The aspects of cost reduction brought about by crude oil demulsification:
Reduced viscosity, convenient transportation and reduced pressure loss
Simple alloy steel pipes and joints can be used to replace corrosion-resistant stainless steel, and the cross-section size can also be reduced
Minimizing the corrosive components in crude oil can reduce the corrosion of production equipment
Longer operation time
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