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Environmental Technology Listing
Title of Listing:
VOC Control and Recovery
Category:
Treatment Technologies
Subcategory:
 *Air, All Listings
Media:
Contaminants:
VOCs
Web Site:
Email:
Technology Description:

NUCON International, Inc. has developed and commercialized an innovative off gas treatment system using a proprietary combination of hot nitrogen stripping of adsorbent beds and a reverse Brayton Cycle turbo expansion system to cool and condense the recovered liquid contaminants.

          The raw off-gas is processed through carbon beds to remove and concentrate the extracted solvents. These solvents are then stripped and condensed to liquid to minimize the volume of waste disposed.

          Nitrogen regeneration of carbon adsorption concentration beds eliminates problems of increased volume of the recovered contaminants compared to steam regeneration. This unique process also eliminates the creation of secondary wastewater. The registered trade name of this system is "BRAYSORB".

          The NUCON BRAYSORB Solvent Recovery System (SRS) is a new application of well understood and proven technologies. The engineering and components that make up a BRAYSORB SRS are all highly reliable and do not require operation outside industrially accepted practice. The combination and application is the novel innovation that provides significant advantages. With only two active components that are simple rotating machines (a blower and turbo expander/compressor) long term reliability is exceptional.

          Energy efficiency is very high based on the use of efficient components and engineered recovery. Over 60 percent of the energy given up by the process gas flow when cooled by passing through the turbo expander is recovered in the turbo compressor. The gas out of the expander is used to precool the inlet gas after the solvents have been passively phase separated.

          No water is added to the recovered solvents and no secondary waste is created.
Performance Status/
Limitations:

Performance Status:

          The NUCON BRAYSORB SRS has been successfully demonstrated for soil remediation off-gas treatment at the DOE Savannah River site. This was done with a trailer mounted mobile system that has demonstrated the process at a variety of sites and applications in the U. S. and Canada.

          Large flow permanently installed BRAYSORB SRS have been in highly efficient operation at production facilities for over five years.

          There are currently two mobile systems and seven large scale fixed systems in successful operation.

          Limitations:

          The BRAYSORB SRS is efficient only for solvents that are reasonably well adsorbed on activated carbon and that can be stripped at temperatures lower than about 350.5 degrees Fahrenheit.

          The lower the boiling point of the recovered solvents the more advantageous the BRAYSORB SRS is compared to standard mechanical refrigeration systems
Topics
Chemicals, Organics, Technologies, Treatment/Remediation
Additional Topics/Tags/Keywords
Off-Gas Treatment, Nitrogen Stripping, Carbon Beds, Brayton Cycle

Organization:
Nucon International, Inc.
Address:
7000 Huntley Road
Phone:
DescriptionNumber
City:
Columbus
1.
Primary (614) 846-5710
State/Province/Territory:
OH
2.
Zip/Postal Code:
43229
3.
Country:
United States
4.
Fax:(614) 431-0858
Branch Locations: