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SCA and St1 have entered a joint venture to produce and sell liquid biofuels. SCA will supply tall oil to the joint venture and will invest approximately SEK 0.6 billion in the company. SCA and St1 will be equal shareholders of the joint venture, which will itself have a 50% share in the St1 Gothenburg Biorefinery, which is now making an investment in a biorefinery with total capacity of 200,000 tonnes of liquid biofuels, estimated to a total investment cost of SEK 2.5 billion. The new biorefinery will be operational in Q2 2023.

“Partnership with SCA is a key element in the implementation of our renewable fuels investment program and it secures the supply of renewable feedstock materials to meet the ambitious Nordic climate targets for 2030”, says Henrikki Talvitie, CEO of St1 Nordic Oy.

2018 04 23 102625“In line with our communicated long term strategy, we will now with the joint venture with St1 go from being a supplier of tall oil to the chemical and fuel industries to becoming active in the further refining of our renewable raw materials”, says Ulf Larsson, President and CEO of SCA. “We will continue to develop the business potential of the renewable by-products we have from our forests and industries in order to further develop our value chain and to contribute to the EU’s ambitious climate strategy.”

The new biorefinery is under construction on the St1 refinery site in Gothenburg and will have a total capacity of 200,000 tonnes of liquid biofuels. It is designed to optimize production of renewable HVO diesel and biojet fuel and to use tall oil-based feedstock. The joint venture will have access to SCA’s tall oil, a by-product from the kraft pulp production at SCA’s mills in Östrand, Obbola and Munksund. The biorefinery will also be capable of using a wide range of other feedstocks and is expected to be operational in Q2 2023.

As part of the agreement, St1  also becomes a 50% owner of SCA Östrand Biorefinery. The Östrand biorefinery project has recently received environmental permits for the production of 300,000 tonnes of liquid biofuels based on black liquor (a by-product from kraft pulp production) and solid biomass (such as sawdust or bark). The biorefinery in Östrand is a development project where a number of technological challenges remain to be solved before a project design can be finalized.

St1 Nordic Oy is a Nordic energy group whose vision is to be the leading producer and seller of CO2-aware energy. The Group researches and develops economically viable, environmentally sustainable energy solutions. St1 focuses on fuels marketing activities, oil refining and renewable energy solutions such as waste-based advanced ethanol fuels and industrial wind power. The Group has 1250 St1 and Shell branded retail stations in Finland, Sweden and Norway. Headquartered in Helsinki, St1 employs currently more than 1000 people. www.st1.com

The core of SCA’s business is the growing forest, Europe’s largest private forest holding. Around this unique resource, SCA have built a well-developed value chain based on renewable raw material from the company’s own and others’ forests. SCA offer packaging paper, pulp, wood products, renewable energy, services for forest owners and efficient transport solutions. 2020 the forest products company SCA had approximately 4,000 employees and sales amounted to approximately SEK 18.4 bn (EUR 1.8 bn). SCA was founded in 1929 and has its headquarters in Sundsvall, Sweden. For more information, visit w.sca.com

Published in Green Industry
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Wednesday, 24 July 2013 11:54

Blower delivers savings at SCA wastewater plant


Global tissue products company SCA is achieving savings following a blower-technology switch at the wastewater treatment plant serving its Oakenholt Mill in north Wales.

SCA had experienced reliability issues with the two existing lobe-type blowers at the 70-employee site near Flint, which produces tissues and paper towels. The units were used in the energy-intensive process of supplying aeration air to the wastewater treatment plant.
 
Aeration blowers can represent up to 70% of the electricity costs as a wastewater treatment plant due to the large quantities of air that needed to be blown into the aeration tanks.
 
In view of these requirements, SCA area engineering leader Paul Blundell selected Atlas Copco’s ZS+ range of oil-free positive displacement screw blower. These models are designed to be on average 30% more energy-efficient than conventional lobe-type, low-pressure alternatives.
 
The blower installed by SCA was a ZS37+ VSD-800 dry, oil-free rotary screw displacement blower unit – design incorporating precision timing gears. These maintain minute clearances between two intermeshing dry screw elements that never touch.

No lubrication is required in the compression space and special seals stop any rotor bearing oil from entering the compression chamber. Intake air is compressed between the rotors and their housing and oil-free, pulsation-free air at a pressure of 800mbar is delivered at an output rate of between 284 -947m3h.
 
The VSD version of the blower chosen by SCA was fitted with Atlas Copco’s Elektronikon operating system. This is designed to monitor overall system performance and increase efficiency and reliability by directly controlling the blower’s speed to the level of dissolved oxygen in the water.
 
According to Blundell, the blower has exceeded expectations in terms of energy savings and has run almost continuously for a year at 30-50% load. An Atlas Copco air network audit and survey system. he added, had made it possible to link the blower facility to the site’s building management system.

"This allows condition and service requirements to be fed directly to Atlas Copco’s service department either by mobile phone or via the internet,” said Blundell, who is now considering replacing the remaining lobe-type blower with another ZS+.

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