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Radiometric Level Measurement in Coke Chambers

Radiometric Level Measurement in Coke Chambers. Conditions in the coke chamber. Diameter of Coker approx 7m, height approx 20m Temperature up to 430 degrees Celsius Pressure up to 22 bar during cracking process and up to 300 bar water jet during dicharging process

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Radiometric Level Measurement in Coke Chambers

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  1. RadiometricLevel Measurementin Coke Chambers

  2. Process Control Conditions in the coke chamber • Diameter of Coker approx 7m, height approx 20m • Temperature up to 430 degrees Celsius • Pressure up to 22 bar during cracking process and up to 300 bar water jet during dicharging process • Critical product properties of residues • Extraordinary mechanical strain during discharging process

  3. Process Control Requirement on Level Measurement • Non contact measurement system • Reliable measurement system • Safe measurement system • Proven measurement system • Radiometric Level Measurement from Berthold Technologies is the solution

  4. Process Control Process in the Coke Chamber • Hot residual is filled from the bottom • Coker is heated up to 430 degrees Celsius • Pressure drops from 22 bar to 4 bar • Heavy fuels are separated into low and high boiling components • Light components are drained off via a nozzle on the top

  5. Process Control Process Requirement • Fast filling cycle of the Coker required for economical reasons • Filling process is restricted by foam formation • Optimization of filling and discharging process in coke chamber

  6. Process Control Process Optimization • Optimization of filling and discharging process by continuous level measurement • Control of foam level by controlled injection of anti-foam agent • Additional safety feature by max level switch

  7. Process Control Measuring Tasks • Continuous Level Measurement • Measurement of the total level coke/oil/foam-content with radiometric measurement system • Indirect measurement of the foam level by observing and analysing rising speed of the level • Detection of Maximum Level • Radiometric level switch below process gas stub pipe

  8. Process Control The Filling Process Start of continuous level measurement

  9. Process Control The Filling Process Foam level rises

  10. Process Control The Filling Process Anti foam agent is added

  11. Process Control The Filling Process Continuous level measurement

  12. Process Control The Filling Process Foam level rises

  13. Process Control The Filling Process Anti foam agent is added

  14. Process Control The Filling Process Continuous level measurement

  15. Process Control The Filling Process Foam level rises

  16. Process Control The Filling Process Anti foam agent is added

  17. Process Control The Filling Process Continuous level measurement

  18. Process Control The Filling Process Foam level rises

  19. Process Control The Filling Process Anti foam agent is added

  20. Process Control The Filling Process Continuous level measurement

  21. Process Control The Filling Process Foam level rises

  22. Process Control The Filling Process Anti foam agent is added

  23. Process Control The Filling Process Continuous level measurement

  24. Process Control The Filling Process Foam level rises

  25. Process Control The Filling Process Anti foam agent is added

  26. Process Control The Filling Process Continuous level measurement

  27. Process Control Measurement System for Level Measurement in Coke Chamber • Continuous level measurement • LB 440 control unit master and slave • Rod detectors LB4405 in cascade • Point source in shielding Typ 100/150/200 • Level Switch • LB 441 control unit • Point source in shielding LB7440/7442/7444

  28. Process Control Benefits • Filling and discharging process can be optimized by continuous level measurement • Safes money and time • Indirect determination of foam level is possible • Injection of anti-foam agent can be controlled, safes money • Overflow detection by max level switch • Safety of process

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