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Biomass combustion improves Trollhättan air quality, case study

The inhabitants of Trollhättan, Sweden, breathe much cleaner air than they used to years ago. Over 90% of the district heating in Trollhättan is generated by combusting biomass instead of fossil fuels.

Refiners are running at double design capacity, case study

Valmet's latest refiner turbine segment patterns reduces energy consumption while lengthening segment lifetime.

Valmet seal flow upgrade improves suction roll operation

One way for mill's to reduce costs is to replace old, outdated showers and nozzles with Valmet Suction Roll Upgrade Seal Flow shower technology. It will improve moisture profiles, reduce water consumption and reduce roll maintenance costs.

Valmet Recovery Boiler Cleaning - simple, efficient and safe

Valmet's recovery boiler floor washing service, Valmet Recovery Boiler Cleaning, washes the floor along with the rest of the boiler using low pressure water sprays and mixing devices. This decreases mechanical cleaning and reduces floor tube damage.

Valmet Suction Roll Upgrades boost production line performance

Valmet offers a comprehensive list of suction roll upgrades to optimize production line performance, water and energy use, product quality, running time and reliability. These upgrade services bring additional benefits through tailored modernizations.

Recovery boiler selective catalytic reduction - a retrofit case

SCR – Selective Catalytic Reduction is a well-established and widely used technology for NOx removal from power boiler flue gases. Target emission levels are decreasing and SCR will soon be needed for recovery boilers. This article is an abstract of a white paper which presents a study for a retrofit case using SCR to lower NOx from 200 to 100 mg/m3 (6% O2, dry gas), including implementation of some high power features.

Extended lifetime coater blades feature carbide coating

Extended lifetime coater blades from Valmet optimize your total coating cost while providing high and stable coating quality. These high quality durable blades are tailored to each mill's process, using our extensive experience with hard coatings.

Methanol - from pulp mill waste byproduct to valuable fuel

Technology has been used for several years to liquify methanol from SOG. A new process has been developed to produce purified methanol that can be sold as a green renewable fuel, transforming an undesirable waste byproduct into a potential new revenue stream for the pulp mill.

Valmet long lasting filter bags deliver the best performance

Valmet is the global market leader in disc filter bags, with over four decades of experience. Our bags fit perfectly, last longer, are durable and easy to install.

Six problems in the evaporator stage and possible solutions

Evaporators are used to evaporate black liquor from approximately 15% dry solids to 70-85% dry solids. Operating issues include scaling, corrosion, liquor carry-over, vacuum, condensate segregation and foaming liquor. Each can be mitigated with process and technology changes.