Marlotherm® SH

TEMPERATURE RANGE -15℃ TO +325

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Marlotherm® SH is a high quality synthetic, organic heat transfer medium for use in the liquid phase in closed thermal oil systems with a high liquid circulation rate.

Marlotherm® SH can be used without pressure in its work area. The boiling range of this product at atmospheric pressure is above the limit at which the product is used.

Marlotherm® SH is preferably used within the temperature range of 250 to 325 ℃.
The maximum temperature limit corresponds to an outgoing boiler temperature of 325 ℃.

Marlotherm® SH is often used for indirect heating of reactors, polymerization vessels and distillation columns, process installations, dryers and also for heat exchangers in the process industry and systems for heat recovery.

Marlotherm® SH can also be used for heating and cooling installations.
The technical characteristics of a fill with Marlotherm® SH can also be adapted to the requirements of a system and optimized by mixing with Marlotherm® LH.

The thermal oil system must be designed and used in accordance with the recommendations of DIN 4754 “thermal installations operating with organic heat transfer fluids.”

Thermal oil installations filled with Marlotherm® SH can be used at temperatures as low as -15 ℃. Steam or electrical tracing is generally not necessary, however if during a “shut down” period where the temperature drops below -15 ℃, it is recommended to add a quantity of Marlotherm® LH as long as the installation continues to operate below boiling point from Marlotherm® LH. When working with the installation above the boiling point of Marlotherm® LH must first be investigated whether the installation is approved to work with a higher system pressure.

Marlotherm® SH filled installations and covered with an inert (usually nitrogen) gas with a pressure of less than 100 mbar on the expansion vessel is strongly recommended. Such a nitrogen blanket is the best protection against oxidation formation and the prevention of moisture in the installation.

Marlotherm® SH is a thermally stable product with a maximum operating temperature of 300 ℃. Marlotherm® SH can be used for several years without noticeable changes. At higher temperatures, “low boilers” and “high boilers” degradation products are formed.

The formation of degradation products increases at higher operating temperatures. Degradation products remain in solution. An accumulation of “low boilers” must be avoided as this can disrupt the operation of the installation, especially at operational operating temperatures of 340 to 350 ℃. It is therefore recommended to remove the “low boilers” with some regularity via the expansion tank, which must then have a temperature of at least 180 ℃. When used according to the recommended parameters for Marlotherm® SH, there will be little or no “deposits” in the piping system of the installation.
Marlotherm® SH installations are reliable in use and run without high maintenance costs.

To check the condition of the thermal installation, thermal oil samples should be taken from the main flow of the oil circuit at recommended intervals and sent to the Eastman laboratory for analysis.

For more technical data of Marlotherm® SH, please consult the MSDS (Material Safety Data Sheet). Or for specific or urgent questions you can send them to: [email protected]

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