BioFlux® Versatile Hydrotreating Process

Keep on moving with lower carbon intensity

License Technologies for Renewable Diesel & Sustainable Aviation Fuel

The challenge of feed flexibility

Feed flexibility is critical for operators to stay competitive and deliver high-quality products. But diversifying your feed can bring its own set of challenges

For example, you might struggle with limited availability, unpredictable contaminants, or fluctuating prices.
It gets even trickier when working with renewable feedstocks from biological sources. These materials are highly olefinic and might be packed with heteroatom contaminants. To turn them into something valuable, you need a lot more hydrogen than you would for conventional petroleum hydrotreating. We're talking 1,700 to 2,500 scf/bbl - two to three times more than usual!
On top of that, the reactions involved in processing these feedstocks generate a lot of heat. That heat can cause catalyst coking, deactivation, and even runaway reactions. Yikes!
To overcome these challenges, you need to be on top of your game. 
By selecting innovative License Technologies, you can quickly adapt your process to get the job done efficiently. Sulzer Chemtech offers the right tools to achieve your fuel flexibility goals and stay competitive.


Industry-leading technology

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Looking for a cutting-edge technology that delivers Sustainable Aviation Fuel and Renewable Diesel at a fraction of the cost of traditional processes?


BioFlux might be your solution. This liquid-full hydrotreating unit is designed to handle a variety of bio-based feedstock, making it a versatile choice for all your production needs, with lower cost of production and capital investment compared to other trickle bed reactor processes.


Why BioFlux?

  1. Lower capital expense - eliminates the need for vapor recycle gas loop and recycle gas compressor
  2. Lowe operating expense - efficient hydrogen management with better liquid product yield
  3. Lower propensity for coking and over-cracking with minimal undesirable side reactions
  4. Better thermal heat of reaction – exotherm management due to high liquid flux
  5. Reduced carbon Intensity
The renewable diesel and sustainable aviation fuel produced from BioFlux process meets or exceeds relevant standards, such as ASTM D975 (US), EN590/ EN15940 (Euro) and ASTM D7540 AnnexA. Renewable naphtha, sustainable aviation fuel, or bio-propane can also be collected as a saleable product from a BioFlux unit.

Unraveling the process

Let’s break it down  - BioFlux® is a real game-changer in the world of sustainable fuel production. So, how does it work?

What sets BioFlux® Hydrotreating apart from other technologies, is its ability to completely dissolve hydrogen into the liquid feed.  This ensures that your feed and hydrogen are perfectly mixed before they even come into contact with the catalyst bed, providing even distribution and optimal hydrogen availability. Plus, the high liquid flux mode of operation helps to manage reaction zone temperature and minimize byproducts, boosting your yield and lowering your hydrogen consumption.


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Whether you're starting from scratch or looking to revamp an existing unit, BioFlux® has you covered. It's available as a standalone unit or as part of an integrated facility, so you can choose the configuration that works best for your needs. So why wait? Experience the future of sustainable fuel production with BioFlux®!

Additional readings:

Pre-treatment whitepaper

Hydrotreating whitepaper


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