Dehydration and desalting during oil production and desalting of crude feedstock entering the refining process
Cost-effective fourth-generation Natco Dual Frequency™ electrostatic treaters have lower annual power requirements than dehydration technologies that use AC-generated electric fields alone or conventional AC-DC technologies. The customizable bimodal AC-DC electrostatic field uses fewer watts per unit volume as it causes small water droplets dispersed within the wet crude to collide, grow, and separate by gravity. Lower electricity consumption leads to a reduction in emissions. In addition, this advanced AC-DC power unit—sometimes called an electrostatic treater transformer—decreases total connected power load and consequently, the heavy-duty high-voltage electrical infrastructure for power generation, power delivery on site, or both.
The vessel's superior hydraulic efficiency—enabled by our HiFlo spreader’s uniform distribution of vertical flow through the treater and electrodes—eliminates fluid bypass and zones of local recirculation, providing the highest level of dehydration. The high flux per square foot enables a smaller pressure vessel and therefore less embodied carbon, both for newly built and retrofitted dehydration and desalting process equipment.
Natco Dual Frequency treaters allow you to adjust and optimize the electrostatic processing parameters in real time. To break emulsions, the electrostatic treater transformer enables adjusting the shape and amplitude of voltage waveforms applied to the electrodes. Appropriate adjustments optimize coalescence of the water droplets, leading to effective emulsion resolution and low water content in oil without having to rely solely on heating and production chemicals—which are still important factors in oil dehydration and desalting. The ability to tune the electrostatic fields reduces heating requirements and therefore, energy consumption and emissions. Heat, production chemicals, mixing, and time eliminate barriers to dehydration, but the electrostatic fields provide the muscle to aid water droplet growth and gravitational separation.