WestRock Company, a leading provider of differentiated paper and packaging solutions, maximized and increased the main steam output of the biomass boiler beyond the maximum continuous rating (MCR) at its Covington mill in Virginia, USA.
According to the announcement, the company achieved the better performance of the boiler using Valmet DNA FBB Combustion Manager, Valmet’s Advanced Process Control (APC) application. The application lowered the average O2 by about 0.3% points, which improved boiler efficiency, reduced NOX emissions and subsequently minimized NH3 consumption. Additionally, Valmet’s advanced load controller properly allocated the fuel demand between the feeders, taking into account any control and/or mechanical process limitations.
The combustion control application is part of the boiler plant’s Valmet DNA automation system. In 2012, Valmet was chosen as the automation supplier for the new biomass bubbling fluidized bed boiler at the Covington mill. The scope of the system included the boiler, Balance of the Plant, auxiliaries and a training simulator.
Earlier WestRock increased profitability amid higher sales in 1Q2017.
WestRock Company is one of the largest paper and packaging companies with USD15 billion in annual revenue and 42,000 employees in approximately 275 operating and business locations in 30 countries spanning North America, South America, Europe and Asia.