Air system improvements for board and paper making

Customized solutions to ensure better operational reliability and provide a good return on your investment

Air systems improvements for board and paper making

Air systems improvements help you to ensure that your air systems are performing at the highest possible level. With the customized solutions you will improve paper quality, solve runnability problems and ensure better operational reliability. You can also expect measurable results, a good return on your investment and cost-effectiveness.

Improve paper quality

Solve runnability problems

Better operational reliability

Hood Fold-Up Wall

The hood fold-up wall is a good option if your existing hood is in poor mechanical condition and needs to be improved, if you have special requirements for the drying section due to the cylinders being located at three levels, or if you would like to improve safety and working conditions. The fold-up wall has a heat-resistant internal surface, the frames and parts inside the wall are made of aluminum, and it has replaceable windows of polycarbonate. It allows for quicker and safer dryer section maintenance.

Do you want to know more about process upgrades?

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Hood ventilation upgrade

Do you have challenges with condensation in dryer section construction, or hot and humid air leaking from the hood into the machine hall? The main solution is often increasing exhaust air capacity. The hood ventilation upgrades are always tailor-made to your needs. We can offer solutions like exhaust air capacity increase, hood air balance XT-control, pocket ventilation improvement, or hood construction renewal.

Heat recovery upgrades

Need to boost your air system capacity or aim for higher process temperatures? Changes in process conditions or incorrect material selection may have corroded your system. OptiAir’s heat exchangers, compatible with other brands, have a proven track record worldwide. Renewing your heat recovery system can lead to significant savings in steam consumption and costs.

Read and watch our customers' success stories

Ranheim Paper & Board invested in an efficient heat recovery system leading to 14% savings in energy consumption

Nov 30, 2022

Cold working environment and quality issues led Ranheim Paper & Board to invest in Valmet’s heat recovery system OptiAir Recovery. As a result, the mill achieved savings in energy and a significant increase in production.

Valmet OptiAir - a complete paper machine process ventilation in one package

Nov 3, 2020

Drying is the most energy intensive process of the paper machine and it can consume more than 80 % of the total thermal energy. A well-functioning hood, runnability system and heat recovery with air systems play a crucial role in energy efficiency and provide excellent opportunities for reducing costs and increasing the profitability. Valmet’s OptiAir family is designed for optimal and controlled drying conditions and working environment for paper and board machines.

Customer's voice: Valmet’s paper machines’ speed is outstanding at Liansheng Paper’s BM10

Oct 11, 2021

Valmet supplied BM10 at Liansheng Paper Longhai site is producing 125–230 g/m2 kraft containerboard with current speed up to 1,150 m/min and a daily capacity reaching 2,200 tonnes. This video gives you a look into the press section, winder and linear reel of the board machine. The customer also talks about the easy maintenance of the BM10 and about the possibilities remote connections have provided for them.

Valmet Fold-up Wall – Smart and safe solution for closed hood

Valmet Fold-up Wall improves safety and enables shorter maintenance shutdowns while standing the same conditions as a traditional closed hood. Wall can be opened to a wanted height during web breaks, and during shutdowns it gives an easy access to the dryer section. The visuals of the wall can be selected to suit your specific needs.

Process ventilation

Valmet’s family of paper machine ventilation processes and products goes under one name – OptiAir. The OptiAir family is a complete energy-efficient set-up for paper and board machine process ventilation. The family consists of the OptiAir Hood, OptiAir Recovery and OptiAir Environment processes and products.

Field services

On-site and remote field services with high-level standards for safety and work quality for your machinery. Our target is to help you keep your machinery in the optimal condition for the best performance, so you can concentrate on your business goals.

Air system improvements for board and paper making

Customized solutions to ensure better operational reliability and provide a good return on your investment

Hood Fold-Up Wall

Hood ventilation upgrade

Heat recovery upgrades

Start the discussion about process upgrades