GRAPHIC PACKAGING - Augusta, GA
Challenge:
Achieve desired performance and improve reliability while limiting rebuild scope to reuse significant existing components. The existing ESP utilized narrow collecting electrode spacing and wire discharge electrodes installed in frames. The customer requested an upgrade to rigid discharge electrodes while maintaining the existing collecting electrodes in two of three fields and the existing tumbling hammer rappers throughout the ESP.
Southern Environmental’s Solution:
SEI installed its ELEX rigid discharge electrodes in the existing high voltage frames. The narrow profile of the ELEX electrode allowed this to be accomplished while maintaining the existing CE spacing of 9” in the first field and 12” in the second and third fields. A physical model study ensured proper flow characteristics throughout the ESP and, coupled with damper replacement, achieved significant system pressure loss reduction.
Project Duration:
PO Received: May 2018
Materials Delivered: September 2018
Construction Outage: October 2018
Start up: November 2018
Detailed Engineering in the following disciplines:
Structural
Mechanical
Electrical
Physical Model Study
Fabrication and Construction Services:
Structural Steel
ESP Component Fabrication and Installation
Electrical Design and Partial Supply
Ductwork Fabrication and Erection
Project Management
Site Management
Insulation and Lagging
Scope of Work:
Southern Environmental, Inc. provided detailed engineering, material supply, fabrication, construction and start-up services to partially rebuild the Unit #3 recovery ESP. The work was performed in 2018. The limited rebuild was designed based on specific customer requirements regarding scope. The unit had a combination of new internal components as well as reused some existing components. Gas-flow distribution devices were dictated by model study and supplied to correct significant flow issues. New inlet duct elbows were designed and fabricated along with supplying both inlet and outlet stainless steel, zero leak dampers. Material provided included structural steel, new collecting electrodes in the first field, ELEX rigid discharge electrodes in all fields, inlet and outlet dampers, duct elbows, gas flow distribution devices, power supplies, purge air system, tumbling hammer system components, rapper controller system, sonic horns.
Guaranteed Outlet PM Emissions:
Dual Chamber Operation: <15% opacity
Single Chamber Operation: <20% opacity
Average Opacity During Testing: 9%
