Horizontal moisture separators perform the crucial task of removing entrapped moisture content from gas, steam, or air. They improve the quality of media, whilst adding to the reliability of industrial operations.

Since they are subject to high velocity gas flows on a regular basis, they are susceptible to damage and loss of efficiency. Amongst the several problems, corrosion and erosion are diagnosed as the major ones, posing risk to these mechanical devices.

Corrosion and Erosion – The Two Major Challenges

Let’s talk about corrosion first.

Although, horizontal moisture separators are ruggedly built with premium quality raw materials, they are prone to corrosion as they are continually exposed to severe environmental conditions. Even when higher alloys are used in their construction, the vessel can become corroded from regular contact with chlorides or acidic solutions. The outcomes of corrosion include; developing pits, grooves or cracks, dark spots on the separator vessel. In addition, other metal parts, for example, brass or copper alloys, are also vulnerable to corrosion when exposed to aggressive environments for the long run.

Evidences of corrosion must never be neglected, however, must be rectified as and when they occur. This prevents escalating minor damages to severe ones that are beyond repairs/rebuilds.

Especially should the pressure boundaries of horizontal moisture separators be examined regularly to ensure the wall thickness has not corroded past what is acceptable to hold the pressure. This is done easily by making use of an ultrasonic thickness gauge.

The next is erosion.

Generally, the bottom internal surfaces of the separator body and the internal element are at high risk of erosion. This menace is characterized by dished out areas and pits on the internal parts of separator. Neglecting these symptoms weakens metallic parts of horizontal moisture separators, which in turn affects their overall safety and efficiency.

How can you ensure you are operating safely? Periodic thickness inspections are as must as mentioned earlier. This simple step can ensure you are operating efficiently and safely.