Example Potash Projects

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Navigation: User Guide -> Example Projects 9.2 | 9.3 -> Example Potash Projects


Four Stage Crystallisation Example Project

Example Projects - 4 Stage Crystallization Example.png

Project Location

This is a Steady State project and is stored at:
..\SysCAD92\Examples\SS_Potash\Four Stage Crystallisation Example.spf OR
..\SysCAD93\Examples\50 Potash\Four Stage Crystallisation Example.spf

Features demonstrated

  1. Setting up flash trains using PotashEvaporator with Shell and Tube Heat Exchanger 2 & Barometric Condenser.
  2. Use of the Potash Solubility Functionality

Brief Project Description

  • This project shows a 4-Stage-Evaporator(crystalliser) circuit.
  • This project uses constant feed for Liquor Feed and Brine streams.
  • Crystallisation is based on Potash solubility data.
  • Dilution water is added to each crystallisation stage.
  • PotashEvaporator underflow (crystallised material) is removed from the first third and fourth stage. Second stage underflow is feed to the 3rd stage.
  • Brine is used to exchange heat in the Barometric condensers.

Project Configuration

PotashEvaporator

  • PotashEvaporator Tab
  1. Select FlashTrain mode
  2. Specify minimum flash temperature for the unit (this will assist with pressure balance of the circuit)
  3. Select Solubility On (for Body Evaluation Block Only)
  4. Define the Fraction of Leg feed liquid reporting to the Evaporator.
  5. Define the Overflow and Product Splits.
  6. Optional - Makeup block - used to add dilution water to the crystalliser.
  • PC Tab
  1. Select the Potash solubility System. NOTE the Potash Solubility data requires the Potash Addon.
  2. Select the Solubility (Potash) Calculation Configuration.

Barometric Condenser

  • Set the approach temperature.

Shell and Tube Heat Exchange

  • HX_001 is used to condense the flash steam from the 1st Crystalliser,
    1. Method - CondensingSteam
    2. Condensing Method: Demand (UA)
    3. Demand Connection: FlashTrain
    4. The condenser area and HTC information is supplied.
  • HX_002 is used to preheat the feed with recycle Brine
    1. Method - Sensible HX
    2. The heater area and HTC information is supplied.

Included Excel Reports

  • Potash Crystalliser Report Rev 0.xls - This file includes the following reports:
    1. Criteria
    2. Crystalliser Conditions
    3. Streams
    4. Flowsheet

Three Stage Evaporator Example Project

Example Projects - 3 Stage Evaporation Example.png

Project Location

This is a Steady State project and is stored at:
..\SysCAD92\Examples\SS_Potash\Three Stage Evaporator Example.spf OR
..\SysCAD93\Examples\50 Potash\Three Stage Evaporator Example.spf

Features demonstrated

  1. Setting up flash trains using PotashEvaporator with embedded heat exchanger and Barometric Condenser.
  2. Use of the Potash Solubility Functionality

Brief Project Description

  • This project shows a 3-Stage-PotashEvaporator(crystalliser) circuit.
  • This project uses constant feed for Liquor Feed, Steam and cooling water supply.
  • The evaporators have embedded heat exchangers enabled
  • Crystallisation is based on Potash solubility data.
  • Evaporator underflow (crystallised material) is removed from each stage.
  • Salt Wash is added to each stage (Leg Feed).

Project Configuration

Evaporator

  • PotashEvaporator Tab
  1. Select FlashTrain mode
  2. Specify minimum flash temperature for the unit (this will assist with pressure balance of the circuit)
  3. Select Solubility On (For Both Body Evaluation and Leg Evaluation Blocks)
  4. Define the Fraction of Leg feed liquid reporting to the Evaporator.
  5. Define the Overflow and Product Splits.
  6. Select Evaporator Heat Exchanger Option
  • HX Tab - The Embedded Heat Exchanger has been defined, this includes the number of heat exchanges, size and heat transfer coefficient.
  • PC Tab (Body Evaluation Block Solubility On)
  1. Select the Potash solubility System. NOTE the Potash Solubility data requires the Potash Addon.
  2. Select the Solubility (Potash) Calculation Configuration.
  • LPC Tab (Leg Evaluation Block Solubility On)
  1. Select the Potash solubility System. NOTE the Potash Solubility data requires the Potash Addon.
  2. Select the Solubility (Potash) Calculation Configuration.

Barometric Condenser

  • Set the approach temperature.

Included Excel Reports

  • Potash Evaporator Report Rev 0.xls - This file includes the following reports:
    1. Criteria
    2. Evaporator Conditions
    3. Streams
    4. Flowsheet