Delayed Coker Unit Savings Best Practice

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Delayed Coker Unit Savings Best Practice
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Delayed Coker Heater
Tube Skin Temperatures.

• Delayed Cooker Units have heaters with tube skin
  thermocouples used to avoid over heating the
  tubes
• Multiple temperature readings avoid localized
  overheating, coking and tube failure
• Previously thermocouples failed or drifted over
  time
• Reliable thermocouples enable one to make burner
  adjustments and clean burners to extend heater
  cycle

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Current Solutions are costly!

• Costs to deal with coking in tubes can exceed 3
  million per occurrence due to lost production
  during spalling and can happen several times per
  year
• Running heaters at optimum conditions with better
  temperature accuracy increases run length between
  spalls by several months

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Our Results in service

• Large international energy company, installed 144
  ExL thermocouples on 2 DCU heaters at one of
  their Texas refineries in March 2007
• All thermocouples have been 100 operational
  since March 2007
• These readings resulted in extended run length
• No drift, failures, or other issues

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Estimated Savings

• Total cost to purchase install
• 1,000,000
• Savings so far
• 3,000,000

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Summary

• ExL Sensors made with Mi-Dry
• insulation have proven superior
• in our application
• Call AccuTru Sensor Technologies for application
  assistance
• www.accutru.com
• 281.358.5600