VYNCKE designs and builds green and clean energy plants burning biomass and Solid Recovered Fuel (SRF) to produce thermal energy from 1 – 100 MWth and electrical power from 0.5 – 15 MWe. The energy comes individually or in any combination of steam, hot water, thermal oil and hot gas … with or without electrical power generation. Louis VYNCKE based at the heart of the Flemish flax industry pioneered from a blacksmith in Gullegem to a visionary entrepreneur by converting coal boilers to flax waste fired biomass boilers. VYNCKE is a 4th generation global family business with its roots in Flanders and today locally organized with over 300 enthusiastic Vynckeneers in Brazil, The US, Canada, Belgium, Germany, Czech Republic, India, Malaysia, Thailand and China … we are always close to you. Today we have over 4,000 references worldwide.

Company details

Gentsesteenweg 224 , Harelbeke , 8530 Belgium
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Globally (various continents)

Quality Since 1912

Powered by the success of their father, Michel and Rene VYNCKE moved to Harelbeke, bought an old train hall which still houses one of the company’s production facilities and laid the foundations of today’s VYNCKE.

From the 70’s onwards, the flax commerce disappeared but new possibilities occurred as the wood industry discovered the advantages of energy production from its own wood waste. The international expansion starts with Dirk VYNCKE proclaiming his passion for fire to the world, from Europe to Asia and Latin America.

Today, the 4th generation with Peter and Dieter VYNCKE, continues the success story together with a growing number of Vynckeneers and increasingly complex business solutions.


VYNCKE wants to be the benchmark in partnership experience with all its stakeholders : Customers, Vynckeneers, Suppliers, Business Partners, Society…

This is realized through a continual focus on quality and improvement related to its products, services, processes, first impression, communication, value creation, …

 In our search for continual improvement we use different indicators to judge our progress, amongst which the customers’ satisfaction and feedback are primary key indicators.

The joint and complimentary effort of all Vynckeneers is necessary to accomplish the satisfaction and happiness of all our stakeholders.

We use the ISO9001:2015-standard as a backbone in our quality management system, guiding us in our daily operations.

We learn from our mistakes, from each other, from our customers & suppliers.

This results in an evolving set of practices, tools, methods and training effort for managing our company – all in compliance with applicable laws & regulations.

Values inspire people to do things that are sometimes difficult, to make commitments that require discipline and to stick to plans for the long haul. An enduring commitment to values is the greatest strength and competitive advantage family ownership can bring to any company.

As a family business we stick to our traditions and heritage while we adapt to the world of our children and grandchildren. By infusing the wisdom of our past with the innovations of tomorrow, we are continually ready for the challenges of the day.

We do not only look for long term relationships with our Vynckeneers and our Customers, we also understand that we have to do the right thing to preserve the planet for our children. Our goals are not the next quarter, nor the next year but the next generation…


There is an English saying “You can please some of the people some of the time but not all the people all of the time”. This is inaccurate. As a single company in a global environment, it is difficult to please everybody because we are such a diverse society with many different ideologies.

VYNCKE overcomes this problem by joining forces with local companies in each region. We bring together complimentary companies where we can provide unparalleled technologies to you. With a strong local flavour and local support you, as our customer, can enjoy the benefits of global technology with local understanding.

Beyond our Joint Ventures, we also have many license agreements and local cooperation agreements that allow us to penerate deeper providing a service and people  close to you that you can understand, work with and respect.


Sky blue with respect for our nest we provide and perform clean energy solutions for this and next generations fueled by the passion for fire the in-house know-how and expertise has been cherised and transmitted from the family pioneers to today’s 4th generation


Smart grey our grey matter really matters as it relies on more than 100 years Vynckeneers experience converting biomass into clean energy with a minimal environmental impact is a huge challenge that requires complex engineering of combustion processes of the highest standards


Red hot firemakers never get cold that’s why new challenges don’t give us cold sweat our burning passion for energy solutions spreads like a wildfire to all corners of the globe.

Combustion Systems

Over the course of more than 100 years VYNCKE has acquired a lot of expertise in converting biomass and other solids to energy.  With more than 4000 references worldwide, VYNCKE installations provide energy from hot water heaters, steam boilers, thermal oil heaters, multimedia plants (hot gas, thermal oil, steam, power generation in one system) and combined heat and power plants.

VYNCKE designs and builds the entire energy plant from fuel storage to chimney, including the combustion and boiler technology, flue gas cleaning, power generation, and control and automation of the total plant.

The combustion system is the heart of the energy plant. Already since the mid 80’s VYNCKE has been using its DWS, Dynamic Water-cooled Stepgrate. This stepgrate was designed and developed specifically for combustion of dry solid fuels with high calorific value. This technology also proved very suitable for dealing with poor quality fuels that have high slagging and sintering properties.


The DWS has now evolved into a multi-fuel grate firing system. It comes in many models, like the DWS-FW (fully water-cooled) grate which is designed for dry fuels or fuels with low ash fusion temperatures; the DWS-SW (semi-water-cooled) grate that deals with the fuels with very high moisture content; or the DWS-Hybrid grate that combines the best of the SW and FW type of grate and that is now the most fuel-flexible combustion system in the world.

With more than 900 units sold worldwide VYNCKE has the most references at industries that use this type of water-cooled stepgrate. This includes installations that span multiple fuels and a variety of energy media.

Most of the solid fuels are fired on our DWS stepgrate but fine solid biomass material can also be burned in suspension.

Vyncke dynamic water-cooled stepgrate for biomass boilers

Principle of watercooling

Just like with combustion engines in cars, we use water to remove the heat from our combustion system. Water is inexpensive and the advantages of using water cooling over air cooling are: water’s higher specific heat capacity and better thermal conductivity. This allows water to transmit heat with a reduced temperature difference. The fuel feeding door, the surface of the stepgrate, the furnace walls and the deashing conveying system are all mechanical parts that are exposed to a temperature of 1000°C. Being water-cooled, together they form a water jacket around the combustion system to ensure long life of the energy plant.

The energy absorbed by the water-cooled stepgrate is always retrieved. It is either injected in the main steam/hot water cycle or dissipated through preheating of combustion air. As such the principle of water-cooling does not reduce the overall plant efficiency.

Adapting technology to the fuel

Most of the solid fuels are fired on our DWS stepgrate but fine solid biomass material can also be burned in suspension.
We always try to burn the available fuels as they are, and have the possibility to combine our grate systems with a wide range of suspension burners, going from standard injection nozzles to multi-fuel burners where also fossil fuels or other process waste flows can be burnt. Our different types of fuel feeding systems, which bring the fuel into the combustion room, are always designed to match the specific properties of the fuel.