1. detect and identify Radiometric Level Measurement in Coke Chambers

2. Process Control 2 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 3 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 4 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 5 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 6 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 7 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 8 The Filling Process Start of continuous level measurement

9. Process Control 9 The Filling Process Foam level rises

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

11. Process Control 11 The Filling Process Continuous level measurement

12. Process Control 12 The Filling Process Foam level rises

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

14. Process Control 14 The Filling Process Continuous level measurement

15. Process Control 15 The Filling Process Foam level rises

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

17. Process Control 17 The Filling Process Continuous level measurement

18. Process Control 18 The Filling Process Foam level rises

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

20. Process Control 20 The Filling Process Continuous level measurement

21. Process Control 21 The Filling Process Foam level rises

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

23. Process Control 23 The Filling Process Continuous level measurement

24. Process Control 24 The Filling Process Foam level rises

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

26. Process Control 26 The Filling Process Continuous level measurement

27. Process Control 27 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 28 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