Success Story
Pressure Power Pump Installations Promote Low Cost and Line Efficiency
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?
Consider Installing a Condensing Economizer
Boilers equipped with condensing economizers can have an overall efficiency that exceeds 90%. A condensing economizer can increase overall heat recovery and steam system efficiency by up to 10% by reducing the flue gas temperature below its dew point and improves the effectiveness of waste heat recovery and fall under 2 categories. An indirect contact condensing economizer removes heat from hot flue gases by passing them through one or more shell-and-tube or tubular heat exchangers. A direct contact condensing economizer consists of a vapor-conditioning chamber followed by a countercurrent spray chamber. In the spray chamber, the cool liquid come into direct contact with the hot flue gas, providing a non-fouling heat transfer surface
