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Questions and Answers
What is the main purpose of D-745 (HP Flare K.O Drum), and how does its design contribute to fulfilling this purpose?
What is the main purpose of D-745 (HP Flare K.O Drum), and how does its design contribute to fulfilling this purpose?
The main purpose of D-745 is to knock out any entrained liquids from the high-pressure relief vapors before they are routed to the Ground Flare System (SYS-740). Its large size (10'D x 110'L) and the vapor inlet at the top with liquid exiting the bottom are designed to facilitate efficient separation of liquids from vapors.
Explain the purpose of E-745A-H, J-M (HP Flare K.O.Drum Heaters) in the high-pressure flare system, and what type of steam is used to provide heat?
Explain the purpose of E-745A-H, J-M (HP Flare K.O.Drum Heaters) in the high-pressure flare system, and what type of steam is used to provide heat?
E-745A-H, J-M are used to vaporize any light residuals inside D-745 that should not be routed to the Slop Header. 60 psig steam is injected into these heaters to heat D-745.
Describe the function of P-745A/B (HP Flare K.O. Drum Pumps), including the type of pump and motor used to drive them, and their destination.
Describe the function of P-745A/B (HP Flare K.O. Drum Pumps), including the type of pump and motor used to drive them, and their destination.
P-745A/B are single-stage centrifugal pumps driven by 10 HP 3510 RPM horizontally-mounted induction electric motors. They pump the liquid from the bottom of D-745 to the Slop Header.
What happens to the overhead vapors leaving D-746 (HP Flare Condensate Drum)?
What happens to the overhead vapors leaving D-746 (HP Flare Condensate Drum)?
Describe the process flow of liquids and vapors through D-746 (HP Flare Condensate Drum), and where each stream is ultimately routed.
Describe the process flow of liquids and vapors through D-746 (HP Flare Condensate Drum), and where each stream is ultimately routed.
Flashcards
High Pressure Flare System
High Pressure Flare System
Handles releases exceeding 300 psig, routing them to the HP Flare K.O Drum (D-745).
E-745A-H, J-M (HP Flare K.O.Drum Heaters)
E-745A-H, J-M (HP Flare K.O.Drum Heaters)
Vaporizes light residuals in D-745 (HP Flare K.O Drum) that shouldn't go to the Slop Header.
D-745 (HP Flare K.O Drum)
D-745 (HP Flare K.O Drum)
Separates entrained liquids from high-pressure relief vapors before they go to the Ground Flare System.
P-745A/B (HP Flare K.O.Drum Pumps)
P-745A/B (HP Flare K.O.Drum Pumps)
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D-746 (HP Flare Condensate Drum)
D-746 (HP Flare Condensate Drum)
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Study Notes
- The High Pressure Flare System handles releases exceeding 300 psig.
- High pressure releases from the HP Flare Header and T-411 PSV discharge go to D-745 (HP Flare K.O Drum).
- 60 psig steam is injected into E-745A-H, J-M (HP Flare K.O. Drum Heaters) to heat D-745 and vaporize light residuals.
- Condensate from E-745A-H, J-M is routed to the 60 psig condensate header.
- Liquid from the bottom of D-745 goes to the Slop Header via P-745A/B (HP Flare K.O. Drum Pumps).
- Vapors from D-745 go to D-746 (HP Flare Condensate Drum), which has E-746 (HP Flare Condensate Drum Heater).
- E-746 maintains temperature using 100 psig steam, and its condensate goes to grade.
- Liquid from the bottom of D-746 goes to the API Separator.
- Overhead vapor from D-746 goes with a nitrogen purge to SYS-740 (Ground Flare System).
- System 740 uses fuel gas for ignition.
Equipment Details
- D-745 (HP Flare K.O Drum) is 10’D x 110’L.
- D-745 knocks out entrained liquids from high pressure relief vapors before they reach Sys-740.
- D-745 sizing accommodates dumping all reactors R-201-205 in an emergency.
- High pressure relief vapors enter and exit the top of D-745, liquid exits the bottom.
- E-745A-H, J-M (HP Flare K.O. Drum Heaters) vaporize light residuals inside D-745 that should not go to the Slop Header.
- P-745A/B (HP Flare K.O. Drum Pumps) are single-stage centrifugal pumps with 10 HP 3510 RPM electric motors.
- P-745A/B route liquid from the bottom of D-745 to the Slop Header.
- D-746 (HP Flare Condensate Drum) is 7’6”D x 11’6”L.
- D-746 separates liquid in the vapor going to Sys-740 (Ground Flare System).
- Vapor enters and exits the top of D-746, liquid exits out the bottom.
- E-746 (HP Flare Condensate Drum Heater) maintains the temperature inside D-746 using 100psig steam to keep hydrocarbons from solidifying
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