HEAT & POWER o+FOOZpGJSTU7ZODLF CJPNBTTCPJMFSJO4XFEFO Named “Jenny”, the new 12 MW biomass boiler being commissioned in Insjön, Sweden is a first for Belgian boiler manufacturer Vyncke. It is ready to provide heat for BIODAL, a public-private company jointly owned by energy utility Dala Energi AB and the family owned sawmill group, Bergkvist-Insjön. TAKING A YEAR TO BUILD, the new boiler plant is scenically sited by the riverbank at Bergkvist- Insjön sawmill. The 12 MW hot-water boiler will use around 17 000 tonnes of biomass per annum, supplied as dry woodchips and wood waste from the sawmill as well as wood pellets from Falun Energi & Vatten AB. – The original idea was to install a pellet-fired boiler, but when we took in quotes, we saw that there was a boiler on the market that could manage both pellets and dry wood chips. Using dry chips from the sawmill and pellets, we cut unnecessary transportation and reduce carbon emissions, said project manager Per Brandes. Supplied by Belgian company Vyncke the boiler is designed to meet the new EU medium combustion plant (MCP) directive on emissions that come into play 2020. – It has a long residence time in the combustion chamber, more than 2.5 seconds at full load, and a completely water-cooled grate, said Per Brandes. Another key feature is the ability to peak the boiler output to 15 MW with pellets, a necessity in extremely cold weather, at 35 oC or lower. The ash left from the boiler will be used as filler material The Finnish energy utility Vaskiluodon Voima Oy has recently inaugurated its new biomass receiving and pre-treatment station at its combined heat and power (CHP) plant in Vaasa, western Finland. The new receiving station is part of its coal-to-biomass conversion project to utilise local forest-based resources. The new biomass grinding system was supplied by US-based CBI (now a Terrex brand) and consists of a 8400 stationary grinder with 1000 kW electrical main drive with additional in-line disc screener to screen out overs. The 95 tonne unit has a production capacity of 120 tonnes or 400 m3 per hour. The unit is designed to process roundwood, stumps and logging residue, which is sourced locally and supplied by truck. A 15 meter long discharge conveyor delivers 20 Bioenergy International No 83, 7-2015 in construction by the sawmill. The new flue gas cleaning technology enables a radical reduction in particulate matter (PM), from 250 mg to 20 mg/Nm3 at 13 percent CO2, compared with old boilers when multi-cyclone filters are replaced with electrostatic precipitators (ESPs). – Together with other upgrades and renovation that we have carried out at our own boiler at the sawmill, this venture means we have stable hot water production for the next 15-20 years, said Peter Eklund, CEO at Bergkvist-Insjön. Public-private partnership The new boiler will ensure the heating supply needed for the dry kilns at the sawmill as well heat households in Insjön via the district heat network. The background to the project is that both Dala Energi and Bergkvist-Insjön had aging boilers that needed replacing. Two years ago the companies formed BIODAL, a jointly owned company that invested over SEK 35 million ( EUR 3.8 million) into the new biomass heat plant. – The idea came about when we found a common business opportunity that could make both companies more competitive while benefiting the environment. This is a good example of how an energy utility and forest industry can collaborate, said Hans Bywall, CEO for Dala Energi AB. Dirk Vyncke, pater familias, for Vyncke, had traveled to Insjon to be present at the inauguration. This is the first boiler the company has supplied to Sweden. – It is inspiring to see this collaboration between a public sector company and a completely (Left): Peter Eklund, CEO, Bergkvist-Insjön, Dirk Vyncke, Pater familias, Vyncke, Per Brandes, Project Manager and Hans Bywall, CEO, Dala Energi. private company. It has given me new ideas that I take home with me, said Dirk Vyncke. After test-firing the boiler was named “Jenny” the name day name for the inauguration by local councillor Ulrika Liljeberg . The tradition of naming boilers is something that project manager Per Brandes has taken with him from when he worked in the Baltic countries during in the 1990s. – I have taken up the tradition and always suggest that new boilers be named with a female name, said Per Brandes. BI83/5121/AS Finnish first for stationary grinder the product on a 120 meter long transit conveyor up to the 24 meter high tie in of the silos. BI83/5083/AS Biomass ORC to UK garden centre US-based provider of distributed, waste heat to power generation plants ElectraTherm, has shipped the first Power+ Generator 6500 to a garden centre in the UK. Scheduled for commissioning in early 2016, the site will use woodchips to generate clean electricity. ElectraTherm utilizes Organic Rankine Cycle (ORC) and proprietary technologies to generate power from low temperature heat at 119°C. The 110 kWe Power+ acts as a combined heat and power (CHP) unit with excess heat from the condensing side to be utilized for heating the garden centre, as well as drying the biomass fuel to a lower moisture content to increase the Ariterm Bio Boiler’s efficiency. The boiler heats water to run the Power+ Generator, and produces clean electricity that is sold back to the National Grid. BI83/5140/AS A happy trio at the inauguration of the first installation of CBI stationary grinder at a European biomass power plant, Laurens Veer (left) Ulf Österoos, and Anders Ragnarsson.
Bioenergy International no 7 December 2015
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