Hot Oil Heaters
Hot oil heaters, also referred to as thermal fluid heaters, or thermal oil heaters, heat thermal fluid that is engineered for heat transfer applications. Thermal fluid heaters are safer and easier to maintain than boilers. The heated thermal fluid exits the hot oil heater and is circulated through heat transfer piping, transferring heat to end user equipment such as asphalt storage tanks. The thermal fluid then returns to the heater, completing the hot oil circuit.
CEI Enterprises manufactures hot oil heaters of two different operational designs:
Jacketed Firebox Hot Oil Heaters
Jacketed Firebox Hot Oil Heaters operate by firing a burner into a cylindrical firing chamber. The firing chamber has a smooth inner surface that is surrounded by an outer jacket. Burner gases turn inside the firing chamber, and exit through the tubes of a shell and tube heat exchanger as they reach the exhaust stack.
Heat transfer fluid enters the hot oil heater through the shell of the shell and tube heat exchanger. The thermal fluid circulates around the tubes, gaining heat from the burner gases passing through the tubes. The thermal oil then enters the outer jacket that surrounds the firing chamber. Here, the thermal fluid circulates in a spiral pattern around the firing chamber, gaining additional heat from both the burner flame and hot burner gases inside the firing chamber. The heated thermal fluid then exits the hot oil heater, and is circulated through a single hot oil circuit, or multiple hot oil circuits, to transfer heat to other equipment.
Jacketed Firebox Heaters are available in horizontal configuration
Helical Coil Hot Oil Heaters
Helical Coil Hot Oil Heaters operate by firing a burner into the open center axis of a helical coil. Hot burner gases turn at the end of the heater, and then pass along the outer surface of the helical coil, before exiting through the exhaust stack.
Heat transfer fluid enters the hot oil heater and circulates through the helical coil. The thermal fluid gains heat from the burner flame and the hot burner gases passing along both the inner and outer surfaces of the helical coil. The heated thermal fluid then exits the hot oil heater and is circulated through single or multiple hot oil circuits to transfer heat to other equipment.
CEI Helical Coil Hot Oil Heaters are available in both horizontal and vertical configurations. Three-pass designs that utilize inner and outer helical coils are also available.
CEI Asphalt Booster Heaters, designed to boost the temperature of liquid asphalt upon loadout at an asphalt terminal, are also of the helical coil design.
Stack Heat Exchangers
Stack Heat Exchangers are available options for both Jacketed Firebox Hot Oil Heaters and Helical Coil Hot Oil Heaters. Stack heat exchangers draw heat from the hot oil heater exhaust gases, and transfer that heat to thermal oil flowing through serpentine coils of serrated finned pipe inside the exchanger. Stack Heat Exchangers help to maximize the thermal efficiency of the hot oil heater by lowering the output demand on the burner, thereby reducing fuel consumption.