Stream Information

// Stream Numbering and Drawing

• Process streams are identified by a number in a diamond box
• Number streams from left to right as much as possible
• Horizontal lines are dominant

• Add arrows for q Change in direction q Inlet of equipment
• Utility streams should use convention given in Table 1.3, lps, cw, fg, etc.

• Since diagrams are small, not much stream information can be included
• Include important data – around reactors and towers, etc.
  • Flags are used – see toluene HDA diagram
  • Full stream data, as indicated in Table 1.4, are included in a separate flow summary table – see Table 1.5

// Stream Information – Flags

Table 1.4: Information in a Flow Summary

Essential Information

• Stream Number
• Temperature (°C)
• Pressure (bar)
• Vapor Fraction
• Total Mass Flow Rate (kg/h)
• Total Mole Flow Rate (kmol/h)
• Individual Component Flow Rates (kmol/h)

Optional Information

• Component Mole Fractions
• Component Mass Fractions
• Individual Component Flow Rates (kg/h)
• Volumetric Flow Rates (m³/h)
• Significant Physical Properties
  • Density
  • Viscosity
  • Other
• Thermodynamic Data
• Heat Capacity
• Stream Enthalpy
• K-values
• Stream Name                                    

A Portion of Table 1.5