Work Package descriptions

WP 1: Biomass collection, pre-treatment and delivery to site
The feedstock for the pyrolysis plant will be residual wood. Such wood is commonly collected in the Netherlands, and BKR is one of the leaders in the market. Residual wood becomes available in the form of large pieces that can be several decimetres long. To be used as feedstock for pyrolysis the residual wood needs to be reduced in size and metals need to be removed from it. Wood of the required specifications is not a commodity product. Therefore, WP1 covers the collection, pre-treatment and delivery of biomass feedstock. Used wood will be collected and pre-treated at the recycling site of project partner BKR. Pre-treatment involves mainly hammer milling and sieving. At the location of the demo plant drying will take place, using a drier integrated within the pyrolysis process.

WP 2: Engineering and construction
The pyrolysis plant will be built in Hengelo (The Netherlands), next to the chemical industry complex of project partner AkzoNobel.

WP2 concerns the realisation of a complete 25 MWth pyrolysis demonstration plant. Within this WP, five different activities will be carried out, namely: permitting; site preparation and civil works; detailed design; construction; commissioning and functional testing.

WP2 will be considered complete when the plant is ready and functional testing has been carried out successfully.

WP 3: Start-up operation optimisation
After commissioning, the plant will be started-up, optimised and continuously operated. Plant availability is expected to increase throughout the years and reach more than 6000 hours in the third year of operation (obviously the plant will continue to operate after this project has been completed).

Within WP3 three main phases have been identified, namely: start-up; optimization, fine-tuning and monitoring; continuous plant operation and monitoring.

WP 4: Pyrolysis oil application
One of the central elements of this demonstration project is the application of the poly-generation products, in particular the pyrolysis oil. One of the main advantages of pyrolysis oil is that production and use can be decoupled in time, quantity and location.

Energy generation applications that will be investigated are the firing of pyrolysis oil in the demonstration plant’s start-up boiler, and the firing of the pyrolysis oil in a relatively small (200 kWth) boiler used in  district heating systems, supported by CFD modeling. In all cases natural gas will substituted.

WP 5: Development and demonstration of organic recovery
WP5 is targeted at using pyrolysis products as a raw material substitute in the chemical industry. This WP focuses on the recovery of acetic acid from the aqueous fraction of pyrolysis oil. Since no substantial quantities of pyrolysis oil have ever been available in Europe for large-scale application and research, such recovery is by default innovative. The work therefore starts with RTD work at laboratory scale to design and construct an acetic acid recovery demo system.

WP 6: Financial, environmental and sustainability evaluation
In each of the above work packages the technical, financial and environmental performance of the plant will be monitored, and extensive data sets will be collected.

Using these data sets, the poly-generation concept of the project will be evaluated in detail. The evaluation will focus on financial, environmental and sustainability issues.

Sustainability and REACH:
“REACH” is a new European Community Regulation on chemicals and their safe use that entered into force on 1 June 2007. It deals with the Registration, Evaluation, Authorisation and Restriction of Chemical substances. For the products of the EMPYRO project an overview of the information requested for REACH will be prepared.