DuPont Group’s FinnFeeds Finland: new evaporation method reduced plant’s energy consumption by a third
The Naantali plant of FinnFeeds Finland Oy, part of the DuPont Group, has succeeded in reducing its use of steam by close to 40 per cent, simultaneously radically reducing its carbon footprint. Total energy consumption has fallen at the plant by around 30 per cent.
The new evaporation method developed by Adven has been in use at the plant since the start of 2018 and the results are encouraging. As steam consumption has been reduced, the plant’s carbon dioxide emissions will fall at an annual rate of 16,000 tonnes. This volume corresponds with more than one hundred million car kilometres.
FinnFeeds produces betaine from sugar beet molasses and other fractions for use in animal feed, nutrition, cosmetics and the chemical industry. Considerable volumes of water are evaporated from the separated fractions. This stage of the process used to consume a lot of steam.
savings in total need of energy
Thanks to the review carried out by Adven, a solution was found where the volume of steam used by the plant could be significantly reduced through MVR evaporation. MVR is considerably more energy-efficient than traditional methods for separating water from condensed liquids.
“The volume of steam is a major cost component and we sought to find different solutions throughout our production process. At the same time, we wished to reduce our carbon footprint and to take our sustainability targets into account. The new evaporation method solution proposed by Adven meets both these requirements,” says plant manager Heikki Vahtera.
Energy savings corresponding to 1,500 single-family homes
As its production grew, Finnfeeds needed more evaporation capacity. Instead of falling back on a traditional solution and making an investment, the company decided to purchase the evaporation as a service from Adven. The new evaporation plant came into operation in early 2018. The heat energy saved annually at the plant corresponds to the total energy consumption of around 1,500 single-family homes heated with electricity.
“We were somewhat surprised by how well everything went. Production at the plant took off on time. The ramping up of production went off without a hitch. In my opinion, our co-operation has been excellent. The evaporation plant is controlled remotely by Adven and personnel are close at hand to assist when needed,” says Vahtera.
“The plant now uses modern turbo fans as part of the evaporation process. With the price of electricity at a relatively low level, this slightly less traditional evaporation method brings significant cost savings in the long term. To simplify things, the evaporation solution previously used at the plant consumed eight units of energy as steam, while with MVR evaporation, only one unit of energy as electricity is used to replace the steam,” says Account Manager Henrik Vasama from Adven.
Adven has two evaporation plants in Finland that use similar technology, one at Finnamyl’s plant in Kokemäki and the other at Honkajoki Oy, located in Honkajoki. FinnFeeds’ evaporation solution is, however, technically more complex than earlier solutions as it incorporates as many as five parallel evaporators at once.
DuPont is the world’s largest supplier of betaine for feed and cosmetics applications. The Naantali plant has been operational since 1953 and currently employs some 70 people. DuPont, a subsidiary of DowDuPont, has been bringing world-class science and engineering to the global marketplace in the form of innovative products, materials and services since 1802. The company believes that by collaborating with customers, governments, NGOs, and thought leaders we can help find solutions to such global challenges as providing enough healthy food for people everywhere, decreasing dependence on fossil fuels and protecting life and the environment. www.dupont.com