Carbon deposition modelling and control at the shaft-furnace reduction gas oxygen enrichment unit

Not scheduled
15m
Oral Presentation Process simulation and modelling

Speakers

Dr Mansour Alharbi (Hadeed) Mr Mohammed Al-Zayer (Hadeed)

Description

The objective of this study was to investigate the gases flow behavior at the oxygen enrichment unit. In addition, to evaluate the natural gas partial combustion efficiency and carbon deposition rate. To identify the optimum operation parameters that can lead to achieve the minimum natural gas consumption with the highest possible reformed gas temperature and also eliminate and/or reduce the carbon deposition. A CFD model of this enrichment unit was developed to predict the flow and the gases combustion behaviors around the oxygen tubes. Therefore, this model would help to study the process performance and identify the root cause of any excessive carbon deposition. High natural gas flow rate could restrain oxygen attached to the back wall of the enrichment unit causing hot spot and excessive natural gas cracking attached to the back wall, then this most likely would results to undesirable carbon deposition. The model results recommend that the optimum natural gas flow rate would allowed to burn the oxygen relatively away from the wall causing less natural gas cracking within the reformed gas stream and away from the wall. However, the optimum gases flow rates range should help to achieve the goals of the enrichment units to increase the gas temperature and introduce natural gas.
Speaker Country Saudi Arabia

Primary author

Dr Mansour Alharbi (Hadeed)

Co-authors

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