The Swedish innovation company CleanFlow AB has developed a unique method for cleansing green liquor. Good for the economy, environment and quality. Now, the company has received its fourth big order. This summer, the company’s system will be delivered to a sulphate pulp mill in Spain. “We are very happy that our technology is continuously being implemented around the world”, says CEO Lennart Källén.
The first mill in the world to use CleanFlow’s green liquor filtration was Swedish. Thereafter, a pulp mill in Japan followed, and then one in South Africa. And now it is Spain’s turn. The mill in Pontevedra in Western Spain belongs to the forest industry group Ence Energia y Cellulosa S.A., which produces more than 450 000 tonnes of eucalyptus pulp annually.
CleanFlow’s cleansing method is based on microfiltration. This process has proven itself to be very successful. “The filter is like the pulp mill’s kidney”, Lennart Källén explains.
“The liquor becomes completely free of foreign particles, which allows the production to increase, and the energy and chemical consumption to decrease. A medium-sized mill can save up to SEK five million in chemicals every year.”
CleanFlow is a member of the Paper Province cluster that works for sustainable development, with a focus on forest bioeconomy. Maria Hollander, CEO of Paper Province, is happy that yet another pulp mill has discovered CleanFlow’s technology.
“It contributes towards making the mills even more sustainable. They save energy, are able to use fewer chemicals during the process, and it also allows for an increase in the production of paper pulp. Resource efficiency is the key to becoming a fossil-free society”, she says.
The new system is fully manufactured, complete with instrumentation and electrical equipment, in workshops in Forshaga. After a test run, it will be delivered to the mill in May.
“The capacity has been dimensioned to suit the Spanish mill. Because it has been built in modules, it can be expanded and adapted for future increases in production”, says Lennart Källén.
The deal was made together with CleanFlow’s partner Sotgar Systems, and the contract sum amounts to SEK 15 million.