Smurfit-MBI in New Westminster British Columbia has been producing quality containerboard for over 50 years for a variety of nationally well-known retailing customers. A project to increase the width of the double facer table to produce more containerboard resulted in a call to Andrew Reynolds.
The old cascading system would occasionally result in lower line speeds when running double walled board. Increasing the deck width raised a concern that line speeds may drop even more due to the temperature required to cure the board. After reviewing the project, a proposal was made to Ed Baarscheers, the Chief Engineer and Project Manager.
Individually control the steam to each of the three hot deck sections to maintain temperature by using a combination of salvage steam from the double backer and line steam from the boiler. Additionally, to maintain the required temperature, the individually controlled sections needed the condensate to be removed as soon as if formed. Pressure powered pumps on each plate section insured condensate was removed immediately, regardless of the upstream steam pressure.
The results were reduced costs, improved quality, improved line speeds, and a system that is flexible to the meet the production requirements for all of Smurfit-MBI’s customers.
Mr. Baarscheers reports, “We are pleased with the system. It has performed as we hoped for and anticipated.”
Did You Know?
Regularly Test Steam Traps
Steam traps are like loyal servants out of sight and out of mind, off in the corner, quietly doing their job 24/7…however nothing lasts forever. Just one failed open steam trap with a 1/8″ inch orifice, a typical drip application, operating at 125 PSIG and a plant steam cost of $15/1000 lbs. will produce over $8000 waste per year. In steam systems that have not been maintained for 3 to 5 years; 15% to 30% of the installed steam traps may have failed.