Boiler conversion to biomass at DuPont production site

Aerial photo of DuPont production site in Grindsted

Aerial photo of DuPont production site in Grindsted


Peder V. Rasmussen

Peder V. Rasmussen

Chief Project Manager
T: +45 5161 3360

Services we provided

In 2015, Ramboll entered a contract for the bioconversion of one of DuPont’s production plants in Denmark.

Part of the green conversion

The overall objective of this project was to convert the fuel used for the Grindsted production plant’s main boiler from coal to wood chips.

Ramboll has been DuPont’s engineering contractor throughout the project development and implementation.

Process steam and district heating

The converted boiler delivers 90 bar process steam primarily to the nutrition production, secondarily to other internal processes at the DuPont plant. In addition, surplus heat from the boiler plant is utilised to supply Grindsted electricity and district heating company with a supplement to the district heating to the nearby town of Grindsted.

The production site in Grindsted was previously known as Grindstedværket and was built in 1924. Danisco took over the plant in 1939, and since then it has become the largest emulsifier factory in the world, employing some 500 people.

From Danish Danisco to DuPont to DowDuPont Inc.

DuPont – which acquired Danish Danisco in 2011 – is an international organisation with 64,000 employees specialised in agriculture and nutrition, including production and research in various food ingredients, enzymes, fermentation and emulsifiers. The company has production activities in 90 countries.

A merger between DuPont and DOW Chemicals was approved in August 2017. The company now carries the name DowDuPont Inc. and is the world’s largest chemical company.

Inaugurated in September 2017

The bioconverted boiler plant with associated processes, buildings and facilities at the Grindsted production site was officially inaugurated at the end of September 2017.


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