- Sulphur-free syngas and bio-oil: This will eliminate the need of gas cleaning for further use of syngas and sulphur oxide emission when using bio-oil as a fuel.
- Reduced char and tar formation
- Improved energy efficiency
- Providing wider product spectrum for Kraft pulp mills
- Enabling non-wood pulp mills
- Increase the revenue of all the involved sectors
- Waste minimization through the utilization in the proposed hydrothermal process
- Enhanced resource efficiency for all the involved sectors
The invention involves the production of syngas, crude bio-oil and lignin simultaneously from waste biomass through a new hydrothermal process. The novelty in the process is to insert partial wet oxidation (PWO) before the hydrothermal conversion (supercritical water gasification, SCWG, or hydrothermal liquefaction, HTL). The PWO downstream is processed in SCWG and HTL operation, instead of processing waste biomass directly in SCWG or HTL. This can also be combined with lignin recovery (LR) as shown in Figure above.
Özdenkçi K., De Blasio C., Hassan R. M., Melin K.,
Oinas P., Koskinen J., Sarwar G., Järvinen M.,
Özdenkçi K., et. al. A Novel Biorefinery Integration
Concept for Lignocellulosic Biomass. Energy
Conversion and Management, 2017, 149, p. 974.
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