Optimized recovery boiler
Valmet has unparalleled experience in chemical recovery, which stems from the vast amount of installed base – we have successfully delivered over 300 recovery boilers around the world. Valmet's unique offering includes leading technology and advanced automation solutions as well as reliability and performance services. The Valmet RECOX+ is the embodiment of our combined expertise.
Valmet’s RECOX recovery boilers are known around the world for their efficient combustion, high availability, safety, high level of power generation and integration with Valmet’s mill-wide solutions for protecting the environment. Their sizes range from small units to some of the largest ones in the world.
To date, Valmet has supplied more than 300 recovery boilers. Thirty of these are in size XL and are in operation at pulp mills with a combined production of over one million tons per year.
RECOX main benefits
- Highest possible efficiency and availability
- Meets the strictest environmental standards
- Low fouling and corrosion characteristics
- Safe working environment for operators
RECOX main features
The air system is central to good recovery boiler performance. Valmet’s Multilevel Air System features staged, interlaced air distribution that efficiently reduces NOx emissions and makes it possible to meet the most stringent emission limits.
Valmet offers mill-wide systems to collect and combust odorous gases. These systems are often integrated with the Multilevel Air System.
A unique feature in the RECOX boiler is a rigid cross-furnace screen at the nose arch. It protects the superheater from furnace heat radiation and thus reduces corrosion.
Operator safety and ergonomics play key roles in Valmet’s boiler design, and our boilers feature many solutions that focus on them. Some examples are our systems for automatic cleaning of air ports and smelt spouts, retractable liquor gun systems and safety shields at smelt spouts.
Customer success stories
The next generation bioproduct mill
Metsä Group’s new bioproduct mill takes pulp production to a new level. In the mill, every single bit of the wood raw material and production side streams are utilized to achieve maximum material and energy efficiency.
CMPC Guaíba pulp mill becomes totally odorless
CMPC Riograndense Ltda’s Guaíba pulp mill in Brazil no longer emits any hazardous or malodorous gases into the environment. They are efficiently controlled and destroyed by Valmet’s non-condensable gas (NCG) treatment system – probably the most comprehensive one in the world.
Suzano sets new standards for green energy in Brazil
In 2011, after years of careful planning and conducting numerous studies, Suzano Pulp and Paper decided to go forward with the most ambitious and challenging project of the South American pulp industry in a decade: to build the most energy-efficient mega mill in the world.
Valmet awarded at Eldorado
Turning a big challenge into a success – this is what happened at the Eldorado Celulose e Papel site when the new greenfield pulp mill started up in the city of Três Lagoas, Brazil, in December 2012. For its work on this project Valmet was nominated as the best engineering–procurement–construction (EPC) supplier.
Rizhao mill:One year of successful operation
APRIL SSYMB Rizhao mill, the world's largest pulp mill, has completed one full year of operation and produced over one million adt bleached pulp. The mill has a state of the art ecofriendly and odorless production.