Water Treatment Plant · Water Treatment Products

KREBS® DeSanders for cooling towers and heat exchangers

KREBS

Details.

KREBS® DeSanders for cooling towers and heat exchangers

Have you noticed that your heat exchanger costs more to run and is not as effective as it used to be? Whether you are running a cooling tower, chiller or evaporative condenser, the water and air deposit debris over time. These particles build up until they interrupt the system’s ability to transfer heat, cause corrosion and potentially clog the water lines.

The solution

Compact KREBS® DeSander skids are extremely efficient in removing dirt, limescale and other solids from your standard or specialty heat exchanger. The DeSander skid uses a pump, valve and DeSander that are highly efficient and low maintenance.

The DeSanders are designed to meet your process needs and specifications.

Key Benefits

Low capital cost in a small footprint
Efficient separation with low power consumption
Removes solids to protect cooling towers, chillers and evaporative condensers
Reduces corrosion
Low maintenance costs
Simple installation

How it works

The DeSander circulates water from the heat exchanger and discharges the clean water (overflow) back into the system. If needed for your system, a manifold of stream jets can be attached to the overflow to help transport solids to the pump section. All of the removed solids drop into an accumulation chamber, and are intermittently discharged on a timed basis.

Tailored to your needs

A DeSander skid or cyclone vessel can be custom-designed to optimise the performance of your cooling tower, chiller or evaporative condenser.

The diameter can range from 25–762 mm (1–30 in).
DeSander internal fittings vary based on your application.
For standard separation applications, the DeSanders remove solids down to approximately 45 microns, depending on the flow rate and size of the unit.
For fine separation applications, vessels are available that contain multiple small-diameter cyclones. These vessels can remove solids down to approximately 10 microns.
A strainer in front of the DeSander protects it from stray large solids such as rags and other debris that may end up in the cooling tower.
Solids dewatering bins are available with permeable polyethylene bags that dewater the sand purged from the DeSander to approximately 95% solids by weight.