Vacuum Applications

Vacuum Distillation of Crude Oil

Refineries produce gasoline and hydrocarbon fuels by processing crude oil via atmospheric or vacuum distillation. By applying vacuum to the distillation column, the crude oil is separated into different products by the combination of heat and vacuum based on their different boiling temperatures. Gasoline and similar lighter products are recovered with enhanced efficiency as vacuum distillation is more energy efficient than atmospheric distillation. CHEM Ejectors and Multi Stage Vacuum Systems perform with very high efficiences for these applications.

Vent Gas Compression

Non-condensable gases from the crude oil distillation column and from other vents in the refinery are normally sent to a common header and piped to flare or sent to vent gas compressors to compress the gases that have some fuel value to the required pressure to burn and recover energy. Recovery of vent gas prevents environment pollution and frequently the payback periods are very short.

Filtering/De-waxing

Liquid ring vacuum pumps by themselves and sometimes in combination with blowers are used for pulling vacuum for the filtering or de-waxing of oils to remove the waxy material.