Horizontal and vertical filter separators are vessels designed to remove particles from gas streams that are less than 10 microns in diameter that standard separators are incapable of removing. Filter separators are installed upstream of various types of equipment that are sensitive to dust, rust, scale, and liquid contaminants. A filter separator installed upstream of a Glycol Dehydrator for example will remove dust, scale, and saltwater fog from the gas stream and prevent contamination of the glycol solution.

The gas stream enters the vessel into the filter section, as it flows through the filter elements solid particles are trapped by the element fibers. The liquid fog or mist is held until enough liquid accumulates to form a large drop.

As the drops increase in size some will fall into the inlet liquid chamber as the rest are forced through the filter element into the mist extractor section by the incoming gas. The drops forced into the mist extractor section gravity flow into the liquid chamber provided for that portion of the vessel. The fluids collected by the liquid chambers are discharged by dump valves.

The gas stream first flows through the filter elements for removal of particles and liquid mists, it will continue onward into the mist extractor section to remove the drops forced through the elements and then exit the vessel free from particulate and liquid contaminates.