Electrical Power & Protection


Converting boiler from coal-fired to pellet-fired

June 2023 Electrical Power & Protection

Valmet is to convert Helen Ltd’s coal-fired district heat boiler to bubbling fluidised bed (BFB) combustion to enable wood pellet firing at the Salmisaari power plant in Helsinki, Finland. The conversion promotes the company’s goal of phasing out coal and at the same time strengthens the construction of a sustainable energy system. “Our goal is carbon-neutral energy production in 2030. Sustainable bioenergy is part of the overall solution to achieve our goal. The versatile production structure ensures reliability of heat supply even in freezing weather. This project is an important step for us on the way to carbon neutrality. We trust Valmet’s abilities to complete this demanding project on time,” says Juhani Aaltonen, who is responsible for Helen’s sustainable energy solutions.

“Converting an existing coal-fired boiler to biofuel combustion is a quick and cost-effective way to transition from fossil to renewable fuels. Valmet has decades of experience of successful boiler conversions,” says Valmet director, Niina Ollikka.

The project is a continuation of the good cooperation between Helen and Valmet. In 2018, Valmet started up a 92 MW pellet-fired heating plant at the Salmisaari power plant area, and during this year the heat recovery plant belonging to the Vuosaari bioheating plant will be completed.

Valmet’s turnkey delivery includes a fuel conversion from pulverised coal to wood pellets on a hot water boiler. It will be modified to a bubbling fluidised bed boiler with a fuel capacity of 150 MW. The delivery includes a flue gas cleaning system and a heat recovery system and modification to the Valmet DNA automation system, together with all necessary auxiliary systems. After the conversion, the plant will produce district heat with extremely high efficiency – the flue gas temperature at the stack will be only 13°C.

 


Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Power supply with scalability optimised
Schneider Electric South Africa Electrical Power & Protection
Schneider Electric has introduced the Easy UPS 3-Phase Modular to the South African marketplace. This robust uninterruptible power supply (UPS) is designed to protect critical loads while offering third-party verified Live Swap functionality.

Read more...
Prioritising arc flash safety
Comtest Electrical Power & Protection
Comtest has developed a range of thermal imaging and wireless testing tools from Fluke, designed to ensure safety is the top priority for engineers working in potentially dangerous arc flash zones.

Read more...
Monitoring the voltage drop in cables
Turck Banner Southern Africa Electrical Power & Protection
With its new M12Plus connectors, Turck Banner is directly shifting the condition monitoring of cables subject to severe stress to the connection technology. The connectors, which come with voltage and current monitoring and a Bluetooth chip, enable measured voltage and current values to be sent wirelessly to a controller.

Read more...
Mesh networks: a multidirectional electrical superhighway
Schneider Electric South Africa Electrical Power & Protection
Today, many power industry stakeholders are faced with mounting requirements for improved grid reliability, resilience and distribution efficiency. It’s a challenge which requires power service providers to rethink their infrastructure. Enter mesh networks, which can overcome the limitations of traditional star networks.

Read more...
Versatile flexible copper busbar
Electrical Power & Protection
Referro Systems specialises in the supply and support of industrial electrical, automation and global software and hardware brands, and is now able to offer the Cubic range of Cu-Flex flexible copper busbars.

Read more...
Trafo Power Solutions upgrades DRC mine transformers
Electrical Power & Protection
With its experience in Africa and its agility in executing projects rapidly, Trafo Power Solutions is supplying three mini-substations and two transformers to a copper-zinc mine in the Democratic Republic of Congo.

Read more...
Full-scale central control room simulator
Valmet Automation IT in Manufacturing
Valmet will deliver a full-scale central control room simulator to Nordic Ren-Gas, the leading Nordic green hydrogen and e-methane developer in Finland.

Read more...
Acquiring locally-manufactured transformers
ACTOM Electrical Machines Electrical Power & Protection
Speed and efficiency are of the essence in the fast-evolving power generation and distribution space; but a significant challenge is the prolonged lead times associated with acquiring transformers – key components in any electrical infrastructure.

Read more...
Seaward testers power PV specialists
Comtest Electrical Power & Protection
One of Asia’s leading clean energy specialists, Solarvest, uses the latest electrical safety test equipment to ensure the solar photovoltaic (PV) installations it services and maintains operate at peak performance levels.

Read more...
Multi-purpose contact block
Electrical Power & Protection
The TME catalogue has been expanded to include products from Schlegel. This German, family-owned company has been specialising in the production of high-quality electromechanical components for almost 80 years.

Read more...