CFD Modelling

CFD modelling is a very important part of the RJM offer and underpins the majority of its projects.

By creating a virtual model of the plant within the CFD framework it enables RJM’s engineers to gain a thorough understanding of how critical aspects of the plant are currently operating, whether that be fuel/air flow, flame profile or combustion parameters. This first stage also confirms why and where NOx, CO, SOx, dust, fouling and slagging material are being formed.

Secondly, it enables RJM’s CFD engineers to make changes to plant equipment within the virtual model. Burner configuration, nozzle size and location, fuel and air velocity, fireball location and temperatures can all be optimised as the model is “run” through a series of iterations. These incremental changes deliver step-by-step improvements each time until the objectives of the plant’s performance upgrade are met. These improvements include the reduction of NOx and CO emissions, reduced firewall corrosion, reduced slagging and better thermal efficiency.

A successfully-completed CFD programme therefore helps determine what new equipment needs to be designed, where it will be located and what the new operational settings should be to deliver the performance uplift.

In terms of fuel / air delivery systems CFD can be used to identify locations where flow improvements are required to reduce system pressure drops and for PF-fired systems, a reduction in material erosion. CFD can also produce fuel / air mixing studies to optimise combustion.

In terms of combustion equipment and configuration, CFD can analyse in detail the performance of current plant equipment and determine what new critical components are required to deliver the performance improvement. Similarly, to mitigate dust emissions, CFD can evaluate the performance of existing cyclones and electrostatic precipitators and determine what needs to be changed to reduce levels of dust in the flue gas.

Most notable recent examples:

Kosovo B Power Station
  • NOx reduction project
  • Reduced primary NOx below 250mg3
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Aboño II Power Station
  • Coal-to-Gas conversion project
  • NOx has been reduced from over 900mg/Nm3
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Miranda Sugar Processing Plant
  • Gas burner upgrade
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Tanjung Bin 4 Power Station
  • Plant performance upgrade project
Learn More
ZETES 2 Unit 3 Power Station
  • New coal burner upgrade
Learn More

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Kosovo B, Pristina

Major NOx and dust reduction project

Coal
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