Construction of the Milena 800 at ECN
On the 21st of November the Milena arrived. The basic engineering and detailed engineering was done by ECN-E&S. The different segments were constructed at Zijlstra B.V. in Friesland. The construction was coordinated together with HoSt. On the truck the three major parts of the reactor vessel are visable.
Some parts were transported through the front door. This did take some effort, however it was all transported succesfully inside.
Some parts were just too large so they had to be lowered in through the roof. On the picture the insert is being lowered into the reactor vessel.
The last part to be attached is the bottom which fixates the riser and contains the nozzles for the combustor.
Progress made in 2009
The pilot scale MILENA gasifier was connected to the existing OLGA pilot scale tar removal unit. Several tests were done to test and optimize the integrated system.
Modifications in the feeding system were made to test demolition wood. First test runs were done at the end of 2009.
The picture shows the connected pilot-scale OLGA tar removal unit.
Progress made in the first half of 2010
The test program focused on generating the required engineering data for a 10 MWth MILENA Bio-CHP demonstration plant. The foreseen fuel for the demonstration plant is demolition wood B, so all tests were done with this wood. Several tests were done to solve feeding and ash discharge problems. The results showed that the integrated system of the MILENA gasifier and OLGA tar removal unit can produce a gas that can be used in a gas engine.
The picture shows the discharged bottom ashes from the riser, which caused a lot of operational problems. The discharge system is modified to prevent these problems during future tests. A duration test (1000 hours) using demolition wood B is scheduled for the end of 2010.
