Photos by Freepix.com and Chemrec AB
Cost-efficient Renewable Fuels Production
Turning Black Liquor into Green Fuels
High-efficiency gasification for kraft pulp mills – producing syngas for methanol and sustainable aviation fuel (SAF) at lower cost and higher energy efficiency.
- Lower Investment Cost
No feedstock collection, handling or preparation needed.
Co-location reduces utilities investment cost.
- Lower Operating Cost
Re-routing energy used for low-efficiency condensing power generation to higher efficiency liquid fuels production
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Superior Energy Efficiency
Optimized heat integration with host plant
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Proven Technology
Built on decades of experience from pilot and demo plants
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Superior Greenhouse Gas Reduction
Made from cellulosic biomass waste product
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Sustainable Future
Enables renewable fuels production from existing pulp mill streams
Technology & Process
From black liquor and oxygen to clean syngas for methanol and SAF — with smelt separation, gas cooling, and mill‑level heat & power integration.
- Feedstock advantage
Direct use of black liquor from kraft pulp mills eliminates costly feedstock handling and preparation.
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- Liquid feedstock – no complicated lock hopper arrangement with CO₂ blanketing
- Feedstock high in sodium – gives alkaline catalysis for complete carbon conversion at lower temperature
- Easy preheating and atomization to very small droplets for high reaction rates
- 500 TWh/year of black liquor produced at pulp mills globally
- Pressurized High-temperature Gasification
Oxygen-blown, entrained-flow operation supports:
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- Complete carbon conversion without tar reformer
- No need for syngas compression before acid gas removal
- No bed material or fluxant addition needed
- Efficient gas cooling heat recovery with steam generation
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Clean Syngas Quality
Tar‑free syngas optimized for direct feed to Rectisol AGR and downstream synthesis to methanol or sustainable aviation fuel (SAF)
- Site integration
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- Heat and power integration with the pulp mill increases overall energy efficiency and lowers investment and operating cost
- Adds black liquor recovery capacity valuable for pulp mill debottlenecking
Advantages typically translates into 20-30% lower investment cost compared to biomass or RDF-based biofuels plants
Experience & Timeline
Our experience is your advantage - pilot and demo plant challenges turned into EPC-ready engineering solutions
*Process Design Package for industrial scale Chemrec Unit
Chemrec gasifier and MeOH/DME synthesis plant utilized for 1 500 000 km field trial with ten Volvo HD trucks
3 x 500 tDS/d unit gasifier plant
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