heat-exchanger-cleaning

The Heat Exchange Cleaning System has been developed to clean fouling deposits from heat exchangers without corrosion, damage, or major equipment outages. The system is built upon a magnetic separation module technology that provides simple operation and effective cleaning.

This allows most heat exchangers to be easily cleaned without the need for disassembly. Heat exchangers are also incorporated into distillation systems for purification processes in air pollution control and water treatment plants. Heat exchangers may be exposed to aggressive chemicals, elevated temperatures, pressure situations, or large volumes of corrosive liquids.  

A successful heat exchanger cleaning program helps extend the life of the heat exchanger and reduce its failure rate. While successful maintenance is a key factor, it must be balanced against production deadlines so neither job nor profits are sacrificed. The Heat Exchanger cleaning solution is the acid and detergent-based product to be used with low-pressure steam to clean heat exchangers.

This system is designed to remove scale from the surface and provide a bright clean appearance. Heat exchangers are often difficult to clean when fouled with deposits of process fluids or chemicals. Therefore, it is important to remove and clean deposits from heat-transfer surfaces regularly. Periodic removal of deposits will restore exchanger efficiency and reduce maintenance costs associated with unreliable equipment.

Fouling and aging are two major causes of heat exchanger degradation. These phenomena cause different types of deterioration in heat exchangers. Some companies have the leading Fouling prevention product in the world. This is our area of strength and expertise. And, we will also be able to assist you with solving your problems with heat exchanger aging.

How can you tell when it’s time to clean your exchangers? 

When the heat exchanger plates don’t achieve the correct product temperatures, of course! You might also see pressure drops at higher than specified because fouling is constricting the channel passage and increasing fluid velocity. To confirm your exchanger has fouling, perform a surface temperature measurement. Place a thermocouple next to each heat exchanger plate. Set the controller to the lowest product temperature, and high output (9 A). At this high-output setting, the controller should cycle on and off rapidly and not maintain a setpoint indefinitely.

How to clean heat exchangers?

There are three methods available for cleaning heat exchanger

  • Removing the plates from the dealer for mechanical or chemical cleaning.
  • Backflushing the exchanger by crossover piping 
  • Chemical cleaning of plates during installation in the exchanger.

Cleaning-in-place (CIP)

CIP cleaning is an effective method to clean heat exchangers without disassembly and can minimize downtime, repair costs, and product loss. It uses chemical and mechanical procedures that provide both chemical and mechanical cleaning. System flushing can be accomplished by quickly flowing water through the system at a high flow rate. This flushed water is collected and treated using the Ion Exchange system. If the required system configuration prohibits CIP, manually cleaning needs to be performed.

Flow Rate: The required flow rate in the cleaning and sterilizing process depends on both the product side and the product’s flow properties. In most cases (except milk sterilization and processing of viscous liquids or liquids containing particles), the flow rate is controllable using a device that regulates the flow rate according to a set value.

Basic chemical cleaning process CIP. When compared with manual chemical cleaning processes, CIP is a labor-intensive process that relies upon frequent manual intervention and monitoring to ensure product quality and clean components. Process time in CIP can be as much as 4 hours, with the majority of operator time consumed with tasks such as rinse water management, acid waste removal, sample analysis, process verification, and maintenance tasks like pump repairs.

Heat exchanger tube cleaning can be simple or difficult, depending on the type of shell-and-tube heat exchanger and on the process they are used to heat. Without attention, a shell-and-tube exchanger’s tubes and the shell will become fouled by deposits that will degrade performance. Cleaning chemicals depend on the same variables for a plate-and-frame heat exchanger, and cleaning compounds must be compatible with the metallurgy of the heat exchanger tubes.

Choosing the right option for cleaning An important part of the most effective heat exchanger maintenance program is selecting the proper solvents, cleaners, and other chemicals to clean and maintain a heat exchanger. Apart from cleaning agents, the right choice of process conditions is also needed. The carrying bar, guiding bar, tightening bolts, suspension wheels on the pressure plate and connection plates, and the lock release rod need a blanking treatment.

By Anurag Rathod

Anurag Rathod is an Editor of Appclonescript.com, who is passionate for app-based startup solutions and on-demand business ideas. He believes in spreading tech trends. He is an avid reader and loves thinking out of the box to promote new technologies.