Final Co-op PresentationMegan Macciomei
Tech Service Co-op Fall 2015Supervisor: Joe Murowany/Jocelyn Hicks Mentor: Nathan Hoffman
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Overview
• Personal Background
• Project Overview
• My Experience and Future Plans
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Personal Background
Michigan State University– Major: Chemical Engineering– 3rd year– Expected Graduation: May 2018
First Co-op term with Marathon PetroleumActivities
– AIChE– Society of Women Engineers– Usher at Breslin for MSU Basketball– Cross Country– Marathon training
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Projects
Alky Coalescing Media
Alky Caustic Wash Steam Exchanger
Nitrogen Pressure Study
Minor Projects
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Alky Coalescing Media
Purpose:– Install coalescing media in the acid settlers in the alkylation unit
Background:– Current acid settlers do not effectively separate the sulfuric acid and
hydrocarbon
– Coalescing media is designed to distribute the emulsion
– Inability to effectively separate within the settlers results in acid carryover
– Downstream corrosion
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Alky Coalescing Media
Actions:– Provide justification
– Data from other refineries
– Projected improvements• Estimated 87% reduction in acid
carryover
– Economic evaluation• Acid Savings ($18,500/year)
• Caustic Savings ($25,300/year)
– Evaluate alternatives
– Collaboration with Stratco
– Completed ER
– Approved project charter
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Alky Coalescing Media
Moving forward:– Project DSP in development with
Engineering for 2018 implementation upon approval
Takeaways:– Economic evaluation
– Reliability justification
• Acid carryover within the unit
– Seek knowledgeMedia assembled outside the unit
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Alky Caustic Wash Steam Exchanger
Purpose:– Maintain a minimum of 120°F before the DIB Caustic Wash on the Alkylation
unit to effectively neutralize sulfuric acid and caustic
Background:– Caustic heated with alkylate in 9E37A/B
– Unable to currently reach the 120°F in the winter months (higher RVP)
– Insufficient heating leads to acid carryover
– Contributes to downstream corrosion, DIB feed line failure
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Alky Caustic Wash Steam Exchanger
Actions:– Compile justification– Economic evaluation
• 2014 DIB Feed Line Failure• Lost Opportunity: $508,657
– Evaluation of alternatives– Exchanger sizing and design
• Process design technologist
– Review tie-in points– Collaboration with Stratco– Completed ER– Approved project charter
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Alky Caustic Wash Steam Exchanger
Moving forward:– Project DSP in development with Engineering for 2018 implementation if approved
Takeaways:– Established relationship with Stratco
– Communication with Tech Service, Engineering, Operations, etc.
– Develop critical thinking and technical knowledge
– Understanding the unit
Both Projects:– Upon approval, there is an estimated improvement in reliability and acid/caustic savings.
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Nitrogen Pressure Supply Study
Purpose:– Evaluate the current nitrogen supply in Melvindale and Complex 2
Background:– Study meets requirements of Hazop recommendation R20141768-002
– Critical Nitrogen Pressure Needs:
• Complex 2 oxygen skids on each SRU Thermal Reactor
• Melvindale ethanol unloading pump
• Melvindale pentane loading arms
– Pressure reducing regulator in Complex 5 before Melvindale Tank Farm
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Nitrogen Pressure Supply Study
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Nitrogen Pressure Supply Study
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Nitrogen Pressure Supply Study
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Nitrogen Pressure Supply Study
Results:– Issued memo that satisfies Conceptual DSP for project (EJN 14-107)
Future Actions/Recommendations– Replace reducing regulator with back-pressure regulator– Study on upstream portion of East Plant nitrogen– Flow/Pressure indication to DCS – improved troubleshooting
Takeaways– Experience with Operations– Best ways to present data and information– Understanding pressure regulators and their purpose
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October 2015 Turnaround Opportunities
Complex 6 Sour Water StripperAlky Contactor Bundle PullGOHT Reactor Catalyst LoadingHeaters
– Complex 1 Vac Heater– Coker Furnace
Complex 6 SRU Thermal ReactorMBR Tours
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Minor Projects
9V41 Alky Condensate Pot overflow
East Plant Nitrogen User List
7V112 Pressure Controller
Cx2 SWS Fan Motor Adjustment
Flow Surveys: 5E18, 9E55A/B
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My Experience
Technical knowledge developmentCritical thinking developmentManaging prioritiesInvolvement with Area TeamInteraction with Tech Service
Future:MSU for Spring 2016 semester2016 Summer Co-op
– Detroit Refinery: PSM
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Thank You
Special Thanks:– Mentor: Nathan Hoffman– Supervisors: Joe Murowany and Jocelyn Hicks– Manager: Jeremy Theiss– Tech Service
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Questions?