Chromalox and Eastman Therminol Meet High-Temperature Demands

The Challenge:

Recently, a chemical production plant determined that it needed a jacketed reactor to maintain a high temperature of 690°F (365°C) for its processes. The plant, which produces specialty extreme-performance lubricants, fluids, and greases for the aviation and aerospace markets, required a sealless pump instead of a standard water-cooled and mechanically sealed pump to manage the high temperature and pressure. Enter Chromalox.


Chromalox engineers worked with the plant’s production team to install a 150-kW Chromalox CLD Hot Oil System with sealless pump into the chemical reactor. Therminol 72 synthetic heat transfer fluid is used to heat and recirculate through the reactor’s jackets to ensure the plant’s ability to maintain the high temperature.

Therminol 72 was the ideal choice, as it is suited for high-temperature processing applications that also require low- temperature fluidity. Therminol 72 was carefully formulated to minimize the formation of low boilers and eliminate the risk of insoluble high-boilers formation and fouling. Proper attention to system design and operation within the maximum bulk and film temperatures specified will help ensure reliable operation.

Examples of equipment heated within the facility include jacketed glass-lined reactors, distillation columns, and wiped film evaporators. The system was pre-engineered to include temperature and power controls, expansion tanks, heat exchangers, pumps, valves, gauges, and all necessary piping—not only eliminating the need for component selection and assembly but also allowing for the customization required to integrate the new sealless pump.

The customized sealless pump component provided by Chromalox and the synthetic heat transfer fluid provided by Therminol has helped to maintain the intense temperatures necessary for the required chemical reactions. The effectiveness and stability offered by Chromalox and Therminol has helped the production plant meet third-party and ASME codes and standards.