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Symmetry 2018 Release Highlights

This is a partial list of the new development included in Symmetry. More details can be found in the actual installation of Symmetry.

For VMGSim users:

Symmetry, the new process software platform from VMG, extends the scope of modeling capability from VMGSim by integrating tailored workspaces for Pipe, Flare and Field while delivering an upgraded user experience. As an existing user you should feel right at home since Symmetry builds upon familiar workflows and the core of process simulation technology that comes from VMGSim. Your existing simulation cases will recall in the VMGSim workspace and remain unchanged. Symmetry also provides a new User Experience that offers a wealth of new functionality while preserving the original workflows and layout of information for most unit operations and productivity tools. Watch our new User Experience videos to familiarize yourself with the Symmetry user interface.

Highlights

New user interface

 

newui.PNGFigure 1. Symmetry - user interface layout

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Figure 2. Symmetry - user interface look and feel

 

New simulation workspaces added
  • Pipe Workspace - Rigorous dynamic and steady-state multiphase modeling for complex pipe networks
  • Flare Workspace - All-inclusive relief system analysis with integrated PSV, network header and stack design
  • Field Workspace - Fully integrated gas reservoir and multiphase gathering system with forecasting functionality
Support for 64 bit version 
Several enhancements and additions to the Petrochemical and Refinery Reactor suite

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Figure 3. Coking plant using a delayed coker and visbreaker

New unit operations
  • Bath heater
  • Digital logic
  • Direct column
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Figure 4. Bath heater unit operation

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Figure 5. Direct column separating a feed into cuts defined by distillation curves

Summary of New Features and Enhancements

User Interface

Symmetry provides new flexibility and tools to boost your productivity and enhance your simulation experience. Symmetry preserves VMGSim’s core functionality and workflows while the organization of information remains virtually the same.

Pipe Workspace
  • Multiphase steady state and dynamics pressure flow network solver
  • Ability to import pipe networks from VMGField (based on GIS/shape files)
  • Source unit operation
    • Source can be defined locally or from other sources
    • Support for GOR and Water Cut as specifications
    • Support for gas composition estimation based on MW or Density
  • Support for Deliverability curve input (Tabular, Linear Eq., Fetkovich Eq., Vogel Eq.)
  • Support Phase flow specifications (gas, oil, water)
  • Sink unit operation
  • Node unit operations (multiple feeds/products)
  • Allow streams to define or calculate flow per phase at conditions
  • Improvements to initialization of dynamics pipe networks from steady state solutions
Flare Workspace
  • Scenario manager main features:
    • Add, modify and remove scenarios
    • Run scenarios
    • Define and monitor constraints
    • Monitor PSV constraints
    • Inspect main equipment from network
  • Active case in PFD is set based on active scenario
  • Track kinetic energy across piping network
  • Use Miller equations for losses in junction nodes in steady state (previously only available in dynamics)
  • Flare tip
  • Relief valves can run in sizing or rating mode while monitoring rated and actual flows
Petrochemical and Refinery Reactors
  • License for Catalytic Reforming (CCR) now includes Isomerization and Transalkylation units - this license can now be used to model the whole aromatics process from source reformer to detailed separation
  • License for Delayed Coker has been extended to include the Visbreaker unit -  this license can now be used to model a complete coking plant starting from a cracking furnace prior to the main thermal vessels
  • CCR, HCC, and HT
    • These hydro processing units have a new default 2018+ reaction versions to help start the units' catalyst dependencies to better account for H2 gas recycle flow trending
    • Extension to more focused reaction groupings and ranges
    • Distribution efficiency per stage is now supported as a specification to account for non-ideal plant behaviour
    • Option to treat CH4 as inert
    • Added inert catalyst bed option (HT and HCC)
  • Ethylene Cracker burner positioning option
  • Automatic regression set-up
  • State Space solver added to Delayed Coker
  • Improved user interface in most refinery reactor units to facilitate the configuration and tuning of models - these changes include:
    • More descriptive reaction pathways
    • Custom definitions of conversion within units such as the Visbreaker
    • Reviewed and expanded information in tool-tips
  • FTR upgraded to add PIONA slates
Thermodynamics
  • Added solids curves to the Envelope unit operation - user can define the components to plot
  • Addition of NH4ClBrine/water parameters in APRNG2
  • Options and defaults for new phase ID criteria based on property derivatives: d(Cp)/dT, d(Cp)/dP, d(Isothermal Compressibility)/dT
  • Material Stream - added option to trigger warnings in the flowsheet based on solid formation (this is available in the solids)
  • New interaction parameters for acetylene/propylene in the APR/APRNG/APRNG2 kij
Dynamics
  • Digital Logic Unit Operation - this unit is designed to capture entire digital logic blocks by combining several logic gates
  • Slug/unit cell model
  • Valve /controller malfunction options
  • Setpoint hysteresis (bang-bang control)
  • External (cross-model) Tear Streams 
Digital Logic
  • Designed to capture entire digital logic blocks by combining several logic gates
Oil Characterization
  • Distillation Curve, Oil Source and Towers - added a new End Points Smoothing Option to create continuous curves in the lower and higher ends of distillation curves created in flowsheet unit operations
  • Added a new PIONA slate characterization option based on Carbon Number Cuts
  • Added a new PIONA slate characterization option based on Black Oil characterization settings
  • Oil Analysis - added Watson UOP K factor and Average Boiling Point to the list of physical properties
  • Added API-VMG viscosity correlation for PIONA slate characterization
  • Added a new Cut Ranges characterization option to enter Oil Assay data in terms of boiling temperature distributions
  • Added Black Oil option to characterize PIONA components based on typical black oil input
Relief Valve
  • Comprehensive set of enhancements and capabilities for sizing and rating as part of the development of the Flare workspace - all the improvements are available in the VMGSim (Process) workspace
  • Added backpressure limit calculations to relief valves
  • Added a Scenarios tab when used under the Flare workspace
Pump, Compressor and Expander
  • Support for simple curves in steady state (unit operation solves based on a specified design point)
  • Allow to solve for input based on output specifications
Direct Column
  • Direct Column Unit Operation - allows you to run a simplified distillation column where the cuts are defined based on cut ranges or distillation curves per cut. 
    • Detailed profiles with distillation curves for each calculated cut
    • Support for any type of distillation curve input (e.g. TBP, D86, etc) in any basis
    • It is designed to calculate results fast
    • Several modes of solution to balance accuracy with solve time
    • Flexible options to handle water
Fired Equipment
  • Added Bath Heater unit operation - this unit can do the rigorous modeling of the indirect heating of a process stream by using a heating medium (the bath) which is heated with the combustion of a fuel gas - some important features are:
    • Allows for flame geometry input in order to capture detailed heat distribution
    • Flexible input for burner data
    • Heating media (bath) can be defined with any composition
    • Flexible input for tube configurations
    • Detailed profiles of the key variables along the process and furnace tubes
    • API efficiency calculations
  • Units that include a furnace side utility (e.g. Cracking Units, Visbreaker or Fired Heater) have been significantly upgraded, for example:
    • Ability to account for burner location by specifying temperature profiles
    • Fired Heater - API efficiency calculation
Heat Exchanger and Air Cooler
  • Added air side volume flow rate calculation with and without rating
  • Heat Exchanger rating
    • Addition of critical heat flux activation option in heat exchange and air cooler unit's rating and performance modes
    • Added Simulated Performance and Rated Overdesign modes to heat exchangers so unit specifications can be kept with detailed geometry solution
    • New K-Type exchanger rating option to add or remove suppressed nucleate boiling considerations
    • Vibration calculation option added to the TEMA shell rating feature in heat exchangers
    • Added Hairpin shell type option in the heat exchanger unit operation rating feature
    • Added longitudinal fin option to double pipe, E-type, and F-Type TEMA shell rating feature
Multisided Heat Exchanger
  • Added a new solution method called Wall T Solver for enhanced fidelity on rated models with complex configurations
  • Added option to keep internal layers of a branch unmixed between zones
  • Added a simple model for side UA to allow for variations of UA with flow
  • Improvements to rating model for convergence and speed
Pipe Segment
  • Slug/unit cell model
  • Ability to specify size based on schedule right on the main form or from Line List
  • Added a sizing tab
  • Added Line List
  • Added a flow path viewer
  • Line Sizing in Material Stream now has an option to size to nearest nominal size
Miscellaneous
  • Line list tool provides an interactive tabular interface for pipe segment specified and calculated variables
  • Model Audit tool for dynamics and steady-state
  • Steady-state diagnostics tab
  • Material Stream
    • Added 'More Properties' tab to handle access to most physical properties
    • Added Act. Solid Formed and Act. Solid Formation T to vars inside Solids Formation tab

 Contact your local support office for more information.

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