RETROFIT RIDS PLANT OF RAP'S BLUE SMOKE

A drum mix asphalt plant had to be retrofitted to substantially reduce plant emissions and opacity levels in order to be able to produce recycle mixes in Montreal. The original drum mixer configuration was producing blue smoke because during recycled asphalt pavement processing, the system's design allowed extreme heat transfer rates to take place. The problems were solved by retrofitting the plant with a manufactured recycle system, and a few mechanical alterations. The recycle system eliminates burning RAP and blue smoke by separating the combustion and heat transfer processes. The net effect is to control the total heating rate in the front end of the dryer and to make use of the entire dryer length for heat transfer. This allows the mixer to process high ratios of reclaimed asphalt (up to 100% RAP) without producing unacceptable emissions.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/11660022
• Corporate Authors:

  Scranton Gillette Communications

  380 E Northwest Highway, Suite 200
  Des Planes, IL  United States  60016-2282
• Publication Date: 1986-10

Media Info

• Pagination: p. 63
• Serial:
  • Roads & Bridges
  • Volume: 24
  • Issue Number: 10
  • Publisher: Scranton Gillette Communications
  • ISSN: 8750-9229
  • Serial URL: http://www.roadsbridges.com/rb/

Subject/Index Terms

• TRT Terms: Asphalt pavements; Asphalt plants; Combustion; Drums (Containers); Heat transfer; Mixers; Pavements; Pollutants; Recycling; Retrofitting; Smoke
• Old TRIS Terms: Pavement recycling
• Subject Areas: Highways; Maintenance and Preservation; Materials; Pavements; I31: Bituminous Binders and Materials;

Filing Info

• Accession Number: 00460235
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 31 1986 12:00AM