1. Energiforsk
09 Maj, 2017

2. Meva Energy in short
Biomass gasification based on entrained flow gasification
Two applications:
Decentralized renewable CHP
Decentralized renewable gas production
Standard plant dimensions of 1.2 MWe and 2.4 MWth (CHP) or 3,5 MWgas (gas application)
Developed to utilize fine fraction biomass fuels, such as wood dust, straw, rice husks, bark
Spring 2017: InnoEnergy invests 2.9 MEUR in Meva Energy
The Hortlax plant: heat delivery system

3. The product: industrial scale biomass gasification CHP/gas plant3

4. Trigeneration instead of boilers: more revenue from the resource
- Getting a high-revenue OPEX: convert the resource to high value production
Heat (for EUR/ MWh)
With a boiler:
With Meva Energy:
Power (for EUR/ MWh)
Heat (for EUR/MWh)
Biocoal (for EUR/ton)

5. Hortlax – Primary reactor
Bottleneck:
Primary reactor produces syngas, biochar and tar
About 15-20% of foul bound energy is converted to char and tar
Solution: secondary conversion of biochar and tar to valuable syngas
Secondary conversion conditions biochar to avoid PAH.

6. Project – Secondary gasifier
Purpose:
Verify char and tar conversion to valuable syngas
Optimize process conditions for maximum cold gas efficiency
Target: 75% overall cold gas efficiency and 1200 kWe
Main process parameters: Temperature ( °C), residence time (1-15 s) and inlet air temperature ( °C)

7. Hortlax – Reject gasifier design
Reactor vessel in Inconel
Reactor operates at atmospheric pressure up to 1150 °C
Fuel capacity: 20 kg/h i.e. 200 kW
Tar and char gasification in suspension, final char gasification on an adjustable grate
Air preheating up to 500 °C
Reactor preheating by 15 kW ceramic electrical heaters
Cooled flanges in SS316
Fuel and air nozzles inspired by coke injection nozzles in blast furnaces
Integrated in the Hortlax PLC
Special air-atomized tar nozzles to produce a fine mist without clogging

8. Results from initial tar cracking trials

9. Results from operation with saw dust
Beräknade CGE värden är inte korrigerade för extern värme tillförd via keramiska halvskal eller genom tillförsel av överhettad ånga eller förvärmd luft

10. Thanks!
mevaenergy.com