Biomass solutions Unicon boiler plants for clean energy production

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KPA Unicon has decades of experience in energy projects

KPA Unicon provides responsible energy solutions and life cycle services

KPA Unicon specializes in boiler and power plant projects. The solutions utilize biomass fuels, solid recovery fuels as well as fossil fuels sustainably. We optimize each project’s scope and technology according to customers’ needs and provide operation and maintenance services, as well as technical support during the whole life cycle of plants.

• Construction industry• Chemical industry• Pulp & Paper industry• Sawmill and plywood industry• Forest industry• Municipals

Vision

We are forerunners in the industryand work closely as a part of ourcustomers’ energy production.

Mission

We deliver responsible energysolutions in order to drive customersuccess and well-being of ourpeople.

• Oil and gas industries• Process industry• Food industry • District heating companies• Energy companies• Nuclear power enterprises

We operate on the global markets and our main clients are:

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Flexible delivery scope

All of our solutions can be delivered either directly to the site on a turnkey basis or to existing building as a process equipment delivery, in which case we take into consideration the special requests concerning space utilization. Our modularized plant solutions can be easily transported worldwide.

Typical fuels

Our combustion technology can make efficient use of various biofuels, such as forest residues, sawdust, wood chips, bark and peat. Fuels with extremely small grain size, such as peat and sawdust, as well as fuels with a high moisture content of up to 67% are well suited to our tech-nology. As a secondary mixing fuel, spent grain, landscaping waste and field biomass, for example, are also suitable for use with this technology.

Boiler plants utilizing biomass for the production of process steam and hot water

Our energy production plants always make up a complete package designed and optimized according to customers’ needs. We offer boiler plants for the production of steam or hot water. The solutions are designed for efficient use of local biofuels and environmentally friendly energy production. The plants are based either on Biograte combustion technology, pulverized pellet technology or BFB technology, depending on the type of fuel and the intended use of the plant.

The boiler plants are engineered and built to meet the most stringent environmental requirements. Thanks to their architecture and low noise level, the heating plants can be located in the immediate vicinity of residential areas. Making use of local biofuels is an important means of reducing the dependency on imported fuels and also creates employment opportunities for the local communities. With our decades of experience we can help you solve your energy production challenges.

Biomass solutions

» Unicon Biograte capacity range 4 – 25 MW / boiler

» Unicon Pellet capacity range 3 – 50 MW / boiler

» Unicon ReneFluid capacity range 6 – 50 MW / boiler

» Unicon ReneGrate capacity range 2 – 12 MW / boiler

The modular structure makes it possible to install several plants side by side, and thus reach as high output as needed.

Our solutions:

» Hot water boiler plants for district heating.» Hot water boiler plants for industrial use, for example, at sawmills.» Steam boiler plants for process steam production, for example, in the food industry.» Steam boiler plants and hot water plants to be used as peak load and as backup plant.

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More than 100 Unicon Biograte boiler plants are currently in use around the world, producing energy efficiently. Our plant solutions that generate hot water or process steam are both environmentally friendly and make up a reliable overall solution.

» Unicon Biograte plants can be delivered in size ranges 4 – 25 MW for on-site assembly or in prefabricated modules.

» The prefabricated plants are available in the range of 3 – 6 MW, and have a very fast delivery time. The plant’s mobility makes it possible to be prepared for changing needs in the future.

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Biograte combustion technology

Biograte is a patented rotating grate with a conical primary combustion chamber. The fuel is fed from underneath to the center of the grate. It dries in the middle of the grate from the heat that radiates from the refractory lining bricks and flames without disturbing the burning fuel bed in the combustion zone. After the complete combustion of the fuel, remaining ash falls from the grate into an ash space filled with quenching water.

Main features:

» Highly efficient combustion minimizes unburned

carbon in ashes and reduces flue gas emissions

» Smooth fuel feeding with a stoker screw in the

center of the grate

» Controlled primary air distribution through grate

plates enables low emissions

» Safe wet bottom ash removal

» Flue gas recirculation for grate cooling

» No cold corners thanks to the conical design

» High combustion efficiency

» Suitable for high-moisture fuels, especially when

compared with traditional designs

» Low auxiliary power consumption

» Low minimum load

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Unicon Biograte boiler plant for industrial needs

The capacity of the boiler plant delivered to Stora Enso Ala sawmill located in Ljusne, Sweden, is 15 MW. The plant utilize sawmill residues for sustainable energy production.

The boiler plant was delivered on a turnkey basis, excluding civil and foundation works. The delivery included all process equipment, installations, com-missioning and training of the operational personnel, as well as PlantSys system for local and remote control of the plant.

The boiler plant utilizes sawmilling by-products, such as bark and other wood-based fuel, and produces hot water for the drying process of sawn timber.

Unicon Biograte for district heating

Unicon Biograte 13 MW and designed to operate side by side as a peak and reserve load Unicon SF 13 MW fire tube boiler generate energy for production needs of Polttimo Oy, as well as for district heating of Lahti. Wood chips are used as the main fuel. The boiler plant is operated without constant presence of personnel and is monitored remotely.

Reference plant projects

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Unicon ReneFluid boiler plant is a solution for district heat and process steam production under exceptionally varying load conditions. Unicon ReneFluid is based on bubbling fluidized bed technology (BFB) for combustion of solid fuels. BFB technology is suitable for a wide range of fuels, including milled peat, wood based biomass and clean construction waste timber.

We provide Unicon ReneFluid boilers in a range of 6 – 50 MW/boiler. The scope of delivery is tailored to customer’s needs.

Main features

» Solid recovered fuels of high and low heat value from different sources can be used alone or mixed » Advanced combustion control enables good furnace temperature control and low raw flue gas emission » A small amount of fuel in the bed, compared to the total volume of the bed material, ensures fast and complete combustion of fuel

Main advantages

» High efficiency > 90 % » Fast load change rate, 7 %/min. from the current load » Low operation and maintenance costs » Low raw emissions reducing secondary emission control needs and additive consumption » High fuel flexibility

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Unicon ReneFluid for power and heat production

In March 2013 KPA Unicon signed with French company Cofely Services GDF-Suez a contract for design of a combined heat and power plant. Upon completion of the design work in November 2013, KPA Unicon agreed with Cofely on the implementation of the planned boiler plant project. Located in French city of Epinal plant utilizes wood-based fuels for power and heat production. The supply of KPA Unicon included a power plant boiler with steam capacity of 18 MW including auxiliary equipment, flue gas cleaning equipment, building, plant’s electrification and automation system. KPA Unicon was also responsible for the installation monitoring and commissioning of the boiler plant. The plant was delivered to the customer according to schedule in the spring of 2015.

Unicon ReneFluid for district heating production

The Unicon ReneFluid 20 MW district heating plant delivered to VSV-Energia generates bioenergy for the district heating network of the city of Uusikaupunki and for Valmet Automotive factory. The target of VSV Energia was to switch in heat production from fossil fuels to the use of biofuels, while also responding to the growing need for district heating in the Uusikaupunki area.

KPA Unicon built the heating plant from the foundations upwards, including fuel receiving and flue gas cleaning equipment. The plant was manufactured at own workshops in Finland. The design, installation and commissioning of the plant were also carried out mainly by KPA Unicon and its domestic subcontractors in Finland. The plant was handed over to the customer in late autumn 2015.

Reference plant projects

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Unicon ReneGrate boiler plants utilize local fuels

Grate boilers cover power range of 2 – 12 MW and can utilize for example wood chips, bark and sod peat. The scope of supply ranges from small re-pairs to complete deliveries of boiler plants.

Main features

» Highly efficient combustion minimizes unburned carbon in ashes and reducesflue gas emissions

» Controlled primary air distribution through grate plates enables low emissions» Safe wet bottom ash removal» Flue gas recirculation for grate cooling» Low auxiliary power consumption» Low minimum load

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Alajärven Lämpö’s biomass boiler plant is based on Unicon ReneGrate combustion technology

In 2016 KPA Unicon delivered a new hot water boiler to meet the increasing demand in the Alajärvi district heating network. The boiler has an output of 8 MW. Two other Alajärvi Lämpö’s biomass boiler plants were also supplied by KPA Unicon in 2006 and 1996. KPA Unicon’s scope of supply included Uni-con ReneGrate grate-boiler with auxiliary equipment, ash handling, multicyclone for flue gas treatment and stack. The boiler uses wood-based fuels and sod peat as fuel. The same fuels are also used in older 4 MW and 3.5 MW boiler plants.

Reference plant projects

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Unicon Pellet is an environmentally friendly plant solution to balance peak loads in district heating, to act as a backup plant or to generate process steam. Our solutions support the production of renewable energy, providing improved cost-effectiveness for municipalities, industries and service providers. The Unicon Pellet plant solution considerably reduces CO2 -emissions.

We offer Unicon Pellet plant solutions ranging from 3 to 25 MWth / boiler.

The pellet plant solution utilizes existing technologies to form a new combination of pulverized combustion technology and traditional water or steam boiler technologies. The wood powder burner is a so-called multi-fuel burner, which can be fired with gas or oil in addition to wood powder if necessary. The boiler can be either a fire-tube boiler or a water-tube boiler, depending on the intended use of the plant.

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The advantages of pellets

Pellet prices remain competitive compared to fossil fuels, which are more sensitive to market fluctuations.

Startup of a pellet-fired plant is quick and easy, and it reacts quickly to load changes.

High energy density of pellets enables simple fuel logistics, which reduces the environmental impact.

A pellet-fired plant is a green choice. Replacing an existing solution with a pellet plant signifi-cantly reduces CO2 -emissions.

Pellet technology makes it possible to utilize renewable fuels in the form of wood pellets or briquettes.

Pellet-fired boiler plant reduces the carbon footprint of district heat production

The pellet-fired boiler plant delivered to Hyvinkää Lämpövoima Oy serves as a peak load plant, producing hot water for the Hyvinkää district heating network. The turnkey delivery included the Unicon Pellet 10 MW heating plant utilizing pulverized combustion technology. Advanced pellet dust combustion technology reacts quickly to load changes, and is therefore well suited for peak loads in district heating networks. KPA Unicon also provides maintenance services. The delivery also included PlantSys system for operation and remote control of the plant. The pellet plant is operated without constant presence of personnel.

Pellet boiler plant for Raahe Energia Oy

The pellet-fired Unicon Pellet heating plant with a capacity of 10 MW is used as a peak load and backup plant in wintertime and it produces hot water to network of the city of Raahe. Replacing the old oil boiler with a new modern pellet-fired boiler significantly reduces CO2 emissions from production of district heating. The plants main fuel are wood pellets. The plant was handed over to the customer in the end of 2014.

KPA Unicon OyMyllykatu 12

FI-76100 Pieksämäki, Finland

KPA Unicon Oy Teollisuustie 12

FI-74700 Kiuruvesi, Finland

Tel. +358 207 749 200 Fax +358 207 749 201

info@kpaunicon.com

www.kpaunicon.com