Exploring Process Bath Heaters And Their Variations
Posted in Uncategorised, on September 07, 2022 By Admin
Non-flammable substances like water can be heated directly. However, highly flammable compounds like oil and natural gas require an indirect method of heating. This is where process heaters come into the picture. Process heaters provide heat with the aid of a process coil. A major variation of this equipment is known as process bath heaters, which use an additional heated bath. The basic working of this equipment and its three common types will be explored below.
How does a process bath heater function?
The first step in a working process bath heater involves heating a bath solution with the aid of a specialized burner placed at the bottom of the vessel. The bath also contains a process coil, which is indirectly heated by the bath. Although, some varieties of process heaters don’t contain this coil. Lastly, this coil which contains the process medium is heated by convection. This sums up the basic functioning of a process bath heater. Now it’s time to explore the main types of process bath heaters.
Water Bath Heater
In this type of process heater, a mixture of water and glycol is used as a bath solution. These are excellent for heating process mediums at low-temperature ranges such as 250F.
Salt Bath Heater
The working of the salt and water bath heater is pretty similar. In both these types, the bath solution heats a process coil, which in turn heats the medium. However, instead of using a water-glycol mixture, a salt bath heater uses molten salts. This allows the heater to function in higher temperature ranges up to 1000F.
Direct Fired Reboiler
This type of process heater does not use a process coil but instead uses a fire tube and a tank that contains an amine and glycol solution. The process medium in the bath tank is directly heated by coming in contact with the fire tube.
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