Podcast
Questions and Answers
What is the primary purpose of the Cold Flare System?
What is the primary purpose of the Cold Flare System?
To handle releases primarily from depressuring equipment containing ethylene and propylene.
What is the purpose of the nitrogen purge in the Cold Flare System?
What is the purpose of the nitrogen purge in the Cold Flare System?
The nitrogen purge ensures that the cold pressure relief from the Cold Flare Header is properly managed before it reaches D-740.
What is the function of E-740 (Cold Flare K.O.Drum Plate Coil)?
What is the function of E-740 (Cold Flare K.O.Drum Plate Coil)?
E-740 vaporizes any light residuals inside D-740.
Describe the flow path of the condensate from E-740 and E-741.
Describe the flow path of the condensate from E-740 and E-741.
What is the purpose of E-741 (Cold Flare Pipe Steam Heater) and why is this important for the overhead piping?
What is the purpose of E-741 (Cold Flare Pipe Steam Heater) and why is this important for the overhead piping?
Flashcards
Cold Flare System
Cold Flare System
Handles releases from depressuring equipment, mainly ethylene and propylene.
E-740 (Cold Flare K.O. Drum Plate Coil)
E-740 (Cold Flare K.O. Drum Plate Coil)
Heats liquid in D-740 to vaporize light residuals using 60 psig steam; condensate goes to the 60 psig condensate header.
E-741 (Cold Flare Pipe Steam Heater)
E-741 (Cold Flare Pipe Steam Heater)
Heats cold vapors from D-740 using 60 psig steam to protect overhead piping from low temperatures; condensate routed to 60 psig condensate header.
D-740 (Cold Flare K.O. Drum)
D-740 (Cold Flare K.O. Drum)
Knocks out entrained liquids from cold relief vapors before they go to D-730; vapors enter and exit from the top, liquids exit from the bottom.
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Why is E-741 needed?
Why is E-741 needed?
To protect overhead piping from low temperatures
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- The Cold Flare System manages releases mainly from depressuring equipment that contains ethylene and propylene.
- Cold pressure relief from the Cold Flare Header, along with a nitrogen purge, goes to D-740, which has E-740A/B (Cold Flare K.O. Drum Plate Coil).
- E-740A/B heats the liquid using 60 psig steam to vaporize any light residuals in D-740 that are not meant to go to D-730.
- Condensate from this process is directed to the 60 psig condensate header, and the liquid bottom is routed to D-730.
- Vapors from D-740 are routed to E-741 (Cold Flare Pipe Steam Heater).
- E-741 heats these vapors using 60 psig steam, which protects the overhead piping from low temperatures.
- The resulting condensate is routed to the 60 psig condensate header.
- The heated overhead vapors are then sent to the overhead outlet of D-730.
Equipment Details
- D-740 (Cold Flare K.O. Drum) is 6 feet in diameter and 18 feet long.
- D-740 knocks out any entrained liquids from the cold relief vapors before they are routed to D-730.
- Cold relief vapors enter the top of D-740.
- Liquid exits the bottom of the drum, while vapor exits from the top.
- E-740 (Cold Flare K.O. Drum Plate Coil) vaporizes any light residuals inside D-740.
- E-741 (Cold Flare Pipe Steam Heater) heats the cold vapors from D-740.
- E-741 protects the overhead piping from low temperatures.
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