Horizontal Vessels

Horizontal Vessels
Copyright © 2007 Fluor Corporation
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Lesson Objectives:
Lesson Objectives
Know the basic mechanical function of horizontal vessels.
Know how to calculate and fill out the Fluor standard Nozzle Chart.
Know how to show nozzles and related callouts on the piping isometric and plan
drawings.
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Horizontal Vessel Or Accumulator
What is a Horizontal Vessel??
A horizontal drum or accumulator is a drum located in horizontal position
with usually no internals
Horizontal vessels are used to collect the overhead product from a
fractionating tower. The overhead product is condensed and is transmitted
back to the fractionation tower from which the fraction came. This liquid is
referred to as the reflux.
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Horizontal Drum On PFD:
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Horizontal Vessel
(Accumulator)
Nozzles Names:
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Typical Horizontal Reflux Drum
VAPOR OUT
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Vessel Nozzle Nomenclature:
Fluor uses a system of nozzle names and corresponding letters to make it easier to
identify the nozzles.
The names usually indicate the nozzle function.
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Drum Minimum Height Requirement Shown On P&ID
INSIDE BOTTOM
OF VESSEL
HPFS
SET BY
PROCESS
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Sample:
Saddle-supported Drum
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Drum Elevation Sketch:
See Piping Design Guide for Complete Instructions
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Drum Locations In An Enclosed
Chemical Plant Structure
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Horizontal Drum Shown On
Piping Plan
Vessel headline distance from the pipeway is established by the unit supervisor
and is shown on the plot plan.
The locating coordinate in the other direction might not be established for some
time. Several studies in the adjacent areas will have to be done before we can
establish coordinates for our L.C.P. (Location Control Plan)
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Nozzle Block Chart
Number Or Description - Nozzle connection will be identified by alphanumeric
system. (See vessel nozzle symbols)
Size And Rating
Elevation – Either centerline or Face of Flange
Centerline Coordinate - The centerline coordinate or Face of the nozzle.
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Nozzle Block Chart For Drums
NOZZLE BLOCK CHART
EQUIPM.
NUMBER
OR
DESCRIPTION
SIZE
AND
RATING
CENTERLINE
ELEVATION
(OR AS NOTED)
CENTERLINE COORDINATE
(OR AS NOTED)
NORTH
EAST
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Elliptical Head
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Ladders And Platforms
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Ladders And Platforms
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Horizontal Drum
REFERENCE: Shell Goal Venture - Geismar Plant
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Horizontal Drum
Side View
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Horizontal Drum
Aerial View
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Horizontal Drum
Front View
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Horizontal Drum
Front View
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Questions??
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Exercise PI-E11C
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