6. Aspen Flare System Analyzer

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1Copyright © 2003 HP corporate presentation. All rights reserved.

© 2010 Aspen Technology, Inc. A ll rights reserved© 2010 Aspen Technology, Inc. A ll rights reserved

Optimize & debottleneckflare system DesignAspen Flare system Analyzer

Sunil PatilPrincipal Business Consultant

September 14, 2012

Rev. 2011-08

© 2010 Aspen Technology, Inc. All rights reserved | 2

Agenda

What is Aspen Flare System Analyzer?

Aspen Flare System Analyzer Capabilities

Whats New in V7.3?

Demonstration


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What is Aspen Flare SystemAnalyzer?

Steady State Flare Network Simulator– Models from the relieving device to the flare tip– Can model flare or vent systems

Performs balances around the system– Material– Energy– Hydraulic

Design or rate systems according to user defineddesign constraints

Documents the flare system into one file– Scenarios– Topology– Results


Type of system can handle– Convergent Systems– Divergent Systems– Looped Systems

Model size– Practically no limit

What is Aspen Flare System

Analyzer?...


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Design or Rate ConvergentSystems


Rate Divergent Systems


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Rate Looped Systems


Model Size

No Limit on Model Size


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Model Size

Large Installations can be modelled with ease


Agenda


Capabilities

Whats New in V7.3?

Demonstration


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Aspen Flarenet CapabilitiesCalculations

– VLE /ThermodynamicsCompressible Gas,Vapor Pressure,Peng-Robinson,

SRK

– HydraulicsIsothermal Gas,Adiabatic Gas,Beggs & Brill,DuklerLockehart Martinellietc

– Different Hydraulics methods can be specified forHorizontalVerticalInclined pipe


Aspen Flarenet CapabilitiesCalculations (cont’d)

– Multiple or single scenario analysisScenarios can model single or multiple sources relieving– Emergency shutdown– Plant fi re– Loss of power or cooling

– Equipment failure

– Automatic line sizing

– Automatic design violation printUser defined constraints– Noise, ρ v2 , velocity, Mach No. & back pressure

– Flare tip modellingPressure drop vs. flow curves @ multiple MWs


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Aspen Flarenet Capabilities

Calculations (cont’d)– Calculation of external HTC for pipes from ambient

conditionsInsulation may be included

– Extensive fittings and piping databasesBoth can be customised by user

– Interface to Aspen HYSYS, Aspen Plus, Excel, AccessTransfer stream info from Aspen HYSYS/Aspen Plus to sourcesImport/Export data from Access/Excel database


Aspen Flarenet CapabilitiesUser Interface

– Enhanced process flow diagram style viewMultiple view-portsDisplay of key process variablesRotation of iconsAnnotations


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User Interface– Flow map view with superimposition of operating

point


Aspen Flarenet CapabilitiesUser Interface

– Profile views display data such as mass flow, velocity,noise and pressure


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User Interface– Single page report of all design violations– Customizable report formats

Violations



User Interface

Violations


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Agenda


Capabilities

Why not Process Simulator?

Whats New in V7.3?

Demonstration

Q&A


Why not use a process simulator?Calculation Limitations

– Simulator does not do sizing calculations.

– Pressure drop methods do not include the acceleration term orcheck for choked flow which is important in high velocity Flare andVent calculations.

– Parameters specific to Flare Systems are usually missingRated flow for tailpipes, actual flow for headersInlet piping calculationsDo not predict velocity and noise problems

– API guidelines not built into calculations.


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Why not use a process simulator?

Workflow Limitations

– Very difficult to handle looped systemsNeed simultaneous solver vs. a modular solver

– Multiple design scenarios are impractical because there is nodata synchronization.

Flowsheet Simulator – Each scenario is a caseFlarenet – Each case contains all of the scenarios


Why not use a process simulatorSimulator results are not acceptable

– For a new designLines sizes will be too small.

– For a ratingWill under predict back pressure.

– Do not conform to API design guides.

– Do not predict velocity or noise problems.

Can give an unsafe Flare System


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Agenda


Capabilities

Typical Usages

Whats New in V7.3?

Demonstration


Typical Uses and Benefits

Typical Uses:– E&C companies – for conceptual and detailed design

Reduces design time by sizing the flare networkFinds the min diameter for f lare header and tail pipes automaticallyEliminates trial and error method

– Operating companies – for debottlenecking, plant upgradeand feasibility studies

FLARENET sizes and checks network against design constraintsAny violations will be flagged clearly by the program


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Typical Uses and Benefits

General Information– FLARENET designs or rates pipe networks against single or

multiple scenarios, eliminating data manipulations– Fittings pressure drop can be automatically generated or

calculated from fitting input– Fitting database customisable and password protected– Pipe Class Editor allows definition of standard pipe schedules

and sizes, can define project standards.– FLARENET will implement API 520/521 standards if required


Agenda


Capabilities

Typical Usages

Whats New in V7.3?

Demonstration

Q&A


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V7.3 - Phase 1 of the new Flare System Analyzer tool

V7.3 Deliverables• New and modernized UI• Componentized architecture and modern code base


Aspen Flare System Analyzer V7.3

New UI – New Ribbon Design

New navigation pane

Tabs give different viewsof inputs and results

Ribbon groups common tasks

Easy zoom in / out

Easy access to modelicons to build models


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Aspen Flare System Analyzer V7.3New UI – Powerful New Grid Component

New grid component for tabularview of key inputs and results

Searchable and sortablemakes it easy to find

information in large models

One-click export to Excel


Agenda


Capabilities

Why not use a process simulator?

Demonstration


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Demonstration

6. Aspen Flare System Analyzer

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