Tailor-made and integrated solution for low temperature reactions

What

To satisfy the increasing requirements of the process industry for reactions at low temperatures, Polaris has developed cryogenic units for reactor cooling, reaching temperatures as low as -100 °C. The process is based on the cooling of a heat transfer fluid, using liquid nitrogen as the source of cold.

The heat transfer is carried out on a special cryogenic heat exchanger, designed by Polaris, to obtain the best efficiency and solve the organic ice formation problem. The unique design of the Polaris heat exchanger, based on extensive experience on cryogenic field, eliminates metal thermal stress, and guarantees a longer life for the unit. The heat transfer fluid is collected in a storage tank and is sent to the reactor heat exchanger with a special centrifugal pump.

Why

Advantages of the technology

  1. Customizable: The design is customized based on client performance requirements (operating temperatures, power, etc.) and other site conditions. Also, the heat transfer fluid is adequately selected based on the operating temperature range, customer preferences, availability at site, and cost.

  2. Combined Unit: The system can be designed as a combined unit, where heating is associated with cooling. The heating phase can be performed using electric heaters or dedicated heat exchangers (through steam, diathermic oil, or other heating fluids available in the customer’s factory). The unique design offers cost savings by operating with selective partial fluid heating and avoiding sinking energy into heating the entire system.

  3. Low OPEX: Gas nitrogen produced by liquid nitrogen vaporization can be delivered to the factory network for blanketing or other uses. All the necessary accessories (atmospheric heater, safety pressure valve, low temperature protection device, etc.) for safe and functional gas nitrogen recovery can be included in the unit.

How?

Typical plant configuration

The plant is skid mounted and is supplied as a packaged unit.

Polaris makes the preliminary process analysis and optimization in order to define and propose a more adequate system configuration and method to recover products with higher yields and quality, and at a better cost/benefit ratio.

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