Forms the energised and earthed electrodes between which the electric field is created inside a desalter or dehydrator. Water droplets passing through the field polarise, collide and coalesce. Grid area, spacing and the number of levels set the vessel's treating capacity.
Add to enquiry: Electrode grid assembly
Made to order for the vessel: diameter, length, grid elevation, hanger positions and manway size all decide how the assembly is sectioned for installation. Supplied as a like-for-like replacement, or as an upgraded arrangement following a design review.
Information on this page is indicative. Final suitability and compatibility must be confirmed against your equipment, its serial or tag data and its operating conditions before order. Lead-time bands are indicative and are confirmed at quotation.
A grid assembly is replaced like for like when it is corroded or distorted. It is upgraded when the vessel needs more capacity: a different arrangement within the same shell can raise the treating rate. See design review for capacity enhancement.
An electrostatic coalescer is a pressure vessel that uses a high-voltage electric field to merge small water droplets in crude oil into drops large enough to…
An electrostatic coalescer prewash removes entrained caustic from kerosene after the caustic prewash of a kerosene sweetening unit. A high-voltage direct current (DC) field makes the…
A crude oil dehydrator is an electrostatic coalescer used to remove produced water from crude so that it meets its basic sediment and water (BS&W) specification.…
A crude oil desalter removes salt from crude by mixing in low-salinity wash water to dilute the brine, then removing the water in an electrostatic coalescer.…
A crude oil treatment system removes water, salt and sediment so that crude meets its sales or refinery specification. It works as a train: separation, heating,…
A design review for capacity enhancement establishes what actually limits an existing crude oil treatment train or hydrogen purification unit, and which changes remove that limit…
Troubleshooting a desalter, dehydrator or hydrogen pressure swing adsorption (PSA) unit starts with the symptom, because each symptom has a short list of probable causes and…
Process and detailed design turns a requirement, often no more than a datasheet, into a complete package that a fabricator can build and an operator can…
Bushings & insulators
SKU AH-EC-1001
Carries the high-voltage conductor from the transformer or power unit through the pressure boundary of a desalter, dehydrator or prewash coalescer vessel to the…
Bushings & insulators
SKU AH-EC-1002
Suspends an energised electrode grid from the vessel structure inside a desalter, dehydrator or prewash coalescer and isolates it electrically from earth. Insulators work…
Electrodes & internals
SKU AH-EC-1004
Connects the conductor of the entrance bushing to the energised electrode grid inside a desalter or dehydrator, carrying the high-voltage supply through the oil…
Bushings & insulators
SKU AH-EC-1005
Insulates the high-voltage conductor where it passes close to earthed metal, such as the vessel nozzle or internal supports, inside a desalter or dehydrator.…
Transformers & power units
SKU AH-EC-1006
Carries the high-voltage output of a desalter, dehydrator or prewash coalescer transformer or power unit out of the transformer tank and into the conduit…
Add to enquiry: Transformer bushing and power supply bushing
That is enough to start. Send what you have for a desalter, dehydrator, electrostatic coalescer or hydrogen adsorption unit, whoever built it, and we will identify the equipment and the parts it needs. Final compatibility is always confirmed against your equipment data and operating conditions.
