The electrostatic coalescer is a technology for enhancing liquid-liquid separation by using alternating high voltage electrical fields inside the vessel.

Depending on the working mechanism, there are two primary types of coalescers; Electrostatic Coalescers and Mechanical Coalescers. Electrostatic Coalescers use AC or DC current or both. The water-in-oil emulsion is subjected to a high-voltage electrical field.

VIEC™, Vessel Internal Electrostatic Coalescer, is a technology using alternating high voltage electrical fields for enhancing liquid-liquid separation and thereby helping oil companies increase production

2024年7月31日 · Electrostatic coalescers use electric charges (DC or AC, or a combination of both) to induce coalescence of liquid molecules onto the surface of a collection tank. These coalescers are particularly useful in separating water-hydrocarbon emulsions and are widely used in offshore production platforms.

2012年1月1日 · The Dual Frequency® electrostatic coalescer was developed for delivering both high and low frequencies simultaneously to address the strong field decay occurring for highly conductive oils (over 80 nS/m) and to weaken the droplets interface NATCO 2008.

Electrostatic coalescers use electric fields to induce the coalescence of dispersed liquid droplets. By applying an electric charge, these devices encourage droplets to move and collide, forming larger ones that are easier to separate.

Vessel Internal Electrostatic Coalescer (VIEC). The VIEC has reduced the troublesome emulsion layer in the first stage separator and has also reduced the required injection of demulsifier from 10 to 2 ppmv.

The Compact Electrostatic Coalescer consists of an electrode cartridge of several cylindrical electrodes, alternating between energized and grounded electrodes. The turbulent flow regime, in combination with the high intensity AC field, result in rapid coalescence of water droplets. The CEC can be placed upstream a separator receiving an oil

Sulzer’s VIEC (Vessel Internal Electrostatic Coalescer) technology enables separation of oil/water emulsions by introducing an an electrical field using fully-insulated electrodes in the separator, creating sufficient electrical field strength and retention time for emulsions and liquids to separate.

2002年1月28日 · The electrostatic coalescer has proved to be an efficient means of separating water-in-oil type emulsions. Engineering design and better understanding of the mechanisms of droplet–droplet electrocoalescence should lead to the enhancement and development of new types of electrocoalescer.