ZeroPoint is the selected EPC contractor for the first wood gasification installation of Bio Energy Netherlands, located in the port of Amsterdam and commissioned at the end of 2018. This commercial wood gasifier is the first of its kind in the Netherlands and uses the technology of the Zero-Point Clean Tech. A conscious choice was made for gasification instead of incineration, because 60-70% less nitrogen and particulate matter were emitted. The gas that is produced with the biomass is used to generate heat and electricity. In the first instance, the wood gasification installation has a capacity of 10 MW, 80% of which is used for heat and 20% for electricity. For the future there are plans to further expand this capacity and to extract hydrogen and CO₂ from the gas.
The wood gasification installation will initially have two gasification reactors. Chosen for this are the Fixed Bed Down Draft Gasifiers. The advantage of this type of gasification reactors is that hardly any tar ends up in the gas, which is the case with many other types of gasification reactors. The wood that is gasified is supplied from the region, it only concerns non-recyclable wood, which has no other destination (including prunings). The wood is first dried and shredded before entering the reactor. The wood chips are then placed at the top in the reactor, in which the biomass is heated under low-oxygen conditions. The gas that is produced in this process is called “syngas” (synthesis gas), which mainly consists of carbon monoxide and hydrogen. The syngas leaves the gasification reactor at the bottom, leaving the remaining residues. These residues in the form of “activated carbon” can be used, among other things, as biochar as soil improvers. Before the syngas is used, it is first cleaned with a water scrubber and a cloth filter, which filters out most residues and particulate matter.
Syngas has many different applications. Electricity and heat are initially produced at the wood gasification plant. Electricity is generated by means of a Jenbacher gas engine that can use the syngas as fuel. The heat that is released during the gasification process and the generation of electricity is supplied to the nearby Waste Energy Company of the municipality of Amsterdam, which is connected to the Amsterdam heat network. From 2019, the Bio Energy Netherlands wood gasification plant will also extract hydrogen and CO₂ from the syngas, which can be used for, among other things, transport fuels and in chemistry. The syngas will also be desulfurized during this process.