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SERVICES

Cleaning  Shell  and  Tube  Heat  Exchangers

At Dunn Heat Exchangers we operate the largest, most well-equipped off-site heat exchanger cleaning facilities in the United States. We offer a full array of cleaning methods that allow us to bring your process equipment back to the highest level of operational condition as quickly and as safely as possible. Often, we get results that are unobtainable in the field. Our oversized, enclosed cleaning bays inhibit cross contamination and enable us to safely clean many pieces of equipment simultaneously. As an extra measure of quality assurance, we never use recycled water for cleaning; all waste is professionally processed to government standards. Hydroblast Heat Exchanger Cleaning

1) Hydroblast and Waterlance Cleaning
Hydroblasting and waterlancing are the most commonly used methods to clean fouled process equipment. We offer a superior method of equipment cleaning, utilizing safe, economical, state of the art technology. Our methods include specially designed blast nozzles capable of flowing water to optimal GPM (Gallons Per Minute) and PSI (Pounds per Square Inch). Our method provides the volume and velocity that are necessary for cleaning of a variety of equipment types, and we only use non-recycled water in our process.

The hydroblast and waterlance cleaning structures includes multiple shell-side and tube-side cleaning bays, each remote-controlled and requiring only a single operator. All bays are served by overhead cranes and are connected directly to our onsite wastewater pre-treatment facilities.

All cleaning equipment is permanently positioned in individual, isolated bays for safe operation. Our cleaning bays are enclosed, not only to ensure safety but also to prevent environmental hazards that are common with onsite cleaning operations, such as aerosol drifts and odor releases.
Waterlance Heat Exchanger Cleaning
Hydroblast Heat Exchanger Cleaning 2

2) Grit Blast Cleaning
Dunn Heat Exchangers, Inc. uses multiple enclosed grit blast houses for abrasive cleaning of equipment. Capabilities include cleaning of a tube's outside and inside diameters for your most sensitive tube testing methods. Grit blasting can also be used on equipment that requires an aggressive cleaning method. Operators are required to wear suitable protective clothing and use a safe, filtered air supply.
Grit Blast Cleaning Heat Exchanger

3) Chemical Cleaning
Dunn offers a variety of highly effective chemical cleaning processes. Request a plant tour and let us show you the various cleaning methods that we have to offer.

Clean Heat Exchanger Bundle

4) Cleaning By Thermal Decomposition
Dunn Heat Exchangers can use heat in a controlled environment, to decompose product residue from process equipment without compromising equipment integrity.

Heat Exchanger Oven Control

5) Decommissioning By Thermal Decomposition
Dunn also uses thermal decomposition for the removal of product residue on equipment and metal parts for decommissioning. Contact us today to find out more about this convenient service.

Heat Exchanger Oven Operation

Animations

Offsite Cleaning Cost Comparisons

Offsite heat exchanger cleaning cost comparisons to onsite cleaning can be misleading. There are many hidden costs associated with onsite cleaning.

Inspection Clean vs Standard Cleaning

Optimal cleaning to an "inspection clean" status ensures operational efficiency and a longer duration between cleaning requirements. Dunn's offsite cleaning methods can normally bring fouled equipment back to an inspection clean status that is often not possible in the field.