Project

Power to olefins: Computation fluid dynamics simulations of electrified rotor stator steam cracking reactor.

Duration
01 November 2020 → Ongoing
Funding
Research Foundation - Flanders (FWO)
Research disciplines
  • Engineering and technology
    • Reacting systems
    • Modelling, simulation and optimisation
    • (Bio)chemical reactors
    • Intensification
    • Heat and mass transfer
Keywords
Electrification of the chemical industry Steam cracking Computational Fluid Dynamics
 
Project description

Steam cracking is and will remain the most commonly applied technology for the production of lower olefins in the common decades. However, it faces some major environmental issues as the furnaces of the steam crackers in Flanders are responsible for 50% of the total CO2 emission of the chemical industry. A radically new reactor concept for drastic heat transfer intensification, that will be investigated in this project, is that of an electrified rotor stator reactor, a gas-turbine like design which enables temperature increases to >1000°C at an order of magnitude faster compared to state-of-the-art furnaces (from 200 ms to 10 ms based on preliminary CFD simulations), without increasing pressure. The reason for this is found in the fact that it transforms kinetic energy, obtained via the electrically driven rotor, into heat via stators while the isobaric operation is caused by enhanced mixing in the foreseen vaneless space, where also the majority of the reactions occur. If the proposed project is successful, the valorisation potential in the petrochemical industry will be enormous as it will pave the way for a paradigm shift in the way olefins are produced; from fossil fuel combustion-based steam cracking to electrified olefins production with much higher yields (>65% increase in ethylene production from a given naphtha stream) and thereby process economics, and much lower environmental impact (90% reduction in CO2 emissions).