Filters
BS Energy taking steps towards zero coal
To decrease their carbon footprint, many energy producers are going green with Valmet’s sustainable biomass-fired plants. One of the companies taking steps towards zero coal with Valmet’s technology is BS Energy in Braunschweig, Germany. It supplies energy to the city of approximately 250,000 inhabitants and owns the local distribution networks.
Insights ● Article
Inauguration of Oulun Energia's Laanila biopower plant
January 28, 2021, marked the inauguration day of Oulun Energia’s new Laanila biopower plant in Oulu, Finland. Featuring the latest technology, the plant enables the company to meet growing energy demand, support its goal toward carbon neutrality by 2035 and promote a circular economy. The core of the plant – Valmet CFB Boiler – produces steam efficiently and sustainably as well as electricity and heat through cogeneration.
Insights ● Article
Ørsted to go coal-free by 2023
Climate change, carbon neutrality and low-emission energy production are on top of all environmentally-conscious energy producers’ agenda. Key to this lies in phasing out coal as a fuel and replacing it with biofuels.
Insights ● Article
Troubleshooting headbox corrosion, plus an analysis case study
Imperfections in a headbox's finish interfere with fiber flow through its chambers, resulting in sheet uniformity problems and a poor end product. A process and condition test can identify problems caused by corrosion, fiber orientation and machine limitations.
Insights ● Article
Sources and solutions for several common doctoring problems
One of the main causes for doctoring problems is the loading tube, which may be kinked, leaking or incorrectly pressurized. Additionally, there are a number of failure points such as pivot brackets, pivot rods, blade wear and sequencing.
Insights ● Article
Troubleshooting tips for primary and secondary reeling devices
The following are general troubleshooting tips for the primary and secondary reeling devices. Chronic problems and their symptoms are described, as well as probable causes and corrections.
Insights ● Article
Protect costly soft roll covers with novel mechanical devices
Soft rolls represent a significant investment for mills, yet they are susceptible to damage, especially if the surface temperature varies too much across the face of the roll. This article describes the design, operation and maintenance of some of the most common soft roll protection devices.
Insights ● Article
Proper bearing lubrication and modernization are essential
Most bearing failures can be traced to two maintenance oversights: a lack of lubrication or the use of the wrong type of lubrication. An upgrade may be needed.
Insights ● Article
Apron lip mapping and repair avoid production quality problems
Apron lip damage usually comes in the form of nicks, scratches or dents. These minor abrasions can trap fibers from the pulp or cause distortions in the flow of the headbox jet, which jeopardizes sheet formation. Preparation before apron repairs can improve maintenance safety and save money.
Insights ● Article
Problematic retention aid system leads to press wreck, case study
Papermaking is as much a chemical process as it is a mechanical one. A fine paper machine lost retention aid flow when the pump shut down. The resulting imbalance caused a press wreck when the pump was restarted. Multiple lessons were learned.
Insights ● Article
