Weyerhaeuser Columbus Mill - Columbus, MS
This plant has been purchased by International Paper
Challenge:
Design, manufacture and install a new Dry ESP for a combination boiler to bring the Weyerhaeuser Columbus Mill into MACT compliance. Outlet emissions required to be within 0.03 lb/MMBtu with a 10% opacity, when burning wood waste, oil, natural gas, NCG or a combination of these fuels.
Southern Environmental’s Solution:
Southern Environmental, Inc. designed, built and installed a new Dry ESP complete with new ductwork. Tie in of the new unit took place during the plants 6 day, October 2015 outage. During the outage Southern Environmental, Inc. demolished existing ductwork at the multi-clone and stack to accommodate the new ESP ductwork. The new equipment required modification of the existing access platforms and steel. Various ductwork designs were evaluated to achieve the most economical arrangement from a total cost perspective while maximizing operational flexibility. Various options of total capital cost, pressure drop, and ash drop-out potential where presented to Weyerhaeuser in order for them to choose a design to best fit their operational objectives and cost.
Project Duration:
PO Received: September 2014
Materials delivered: July 2015
Start-up: October 2015
Detailed Engineering in the following disciplines:
Structural
Mechanical
Electrical
Airflow Modeling
Fabrication and Erection Services:
Installation of ID Fan
Installation of new ash conveying and silo system
ESP fabrication and installation
Access fabrication and installation
Field technical support and start up
Insulation installation
Installation of complete weather enclosure with overhead bridge crane
Installation of approximately 346 feet of ductwork
Performance Guarantee:
Filterable particulate emissions from the new ESP will not exceed 0.03lb/MMBtu. Actual emissions were far lower with opacity below 5%.
