VOC Treatment & Recovery for Chemicals

Liquid Nitrogen as a Refrigerant for Volatile Organic Compound Recovery

A cleaner path to recovery

Regulations for controlling hazardous air pollutants have become increasingly stringent, but Linde can help you find ways to lower emissions and heighten your earning power at the same time. Featuring cryo-condensation technology, our Volatile Organic Compound (VOC) Recovery System is a highly efficient, flexible alternative to destructive and adsorptive technologies. Whether your terminal’s current VOC treatment system is slowing production because of emissions limits or has increasingly high operating costs, Linde has a portfolio of options to help you save money and ensure compliance. And because we understand that what works for one chemical manufacturing company may not suit another, we’ll work with you to tailor our VOC treatment and recovery system to meet your needs.

Using liquid nitrogen as the refrigerant, the cryo-condensation process cools the emissions in a process stream to very low temperatures in proprietary and patented heat exchangers, characterized for their high fractionating capacity of vapors and gases. The emissions are separated by decreased vapor pressure, condensing the VOCs and returning valuable products back into your operation. The refrigeration is supplied through indirect heat exchange with liquid nitrogen. The warmed nitrogen is then utilized for purging and blanketing operations.

Controlling volatile compounds from process gases

CIRRUS The chemical and specialty chemical industry uses solvents to manufacture, distribute, and store products. The Linde CIRRUS® Vapor Emission Control systems help to minimize volatile organic compounds from process gases through cryogenic condensation technology.
Important benefits include:

  • Minimizing the release of VOCs into the atmosphere

  • Recovering valuable VOCs to save costs

  • Efficient use of nitrogen, as both liquid and gas:
    - Cryogenic cooling with liquid nitrogen for VOC emission control
    - Inerting with the gaseous nitrogen that exits the cryogenic cooling process

The vapor emission control system is easy to start up and shut down. It is operated by a programmable logic controller (PLC) that ensures the selected emission level is kept constant, regardless of variation in gas flow, pressure, temperature, or level of solvents in the process gas.

Learn more about CIRRUS Vapor Emission Control systems

Learn more about Linde's gas offerings for the chemical industry