Chapter 5: Facilities

Settling Theory

Horizontal Separators

Liquid Drops in Gas Phase

 
• d

  Vessel ID, in.

 
• d _m

  Drop diameter, μm

 
• h _g

  Gas-phase space heigh in.

 
• F _g

  Fractional gas cross-sectional area

 
• L_eff

  Effective length of the vessel where separation occurs, ft

 
• T

  Operating temperature, °R

 
• Q _g

  Gas flow rate, MMscf/D

 
• P

  Operating pressure, psia

 
• Z

  Gas compressibility factor, dimensionless

 
• ρ _l

  Liquid density, lbm/ft ³

 
• ρ _g

  Gas density, lbm/ft ³

 
• C _D

  Drag coefficient

Bubbles or Liquid Drops in Liquid Phase

 
• d _m

  Bubble or drop diameter, μm

 
• h _c

  Continuous liquid-phase space height, in.

 
• F _c

  Fractional continuous-phase cross-sectional area

 
• ρ _d

  Dispersed liquid-phase density, lbm/ft ³

 
• ρ _c

  Continuous liquid-phase density, lbm/ft ³

 
• Q _c

  Continuous liquid-phase flow rate, B/D

 
• t _rc

  Continuous-phase retention time, min

 
• μ _c

  Continuous-phase dynamic viscosity, cp

 
• Δ γ

  Specific gravity difference (heavy/light) of continuous dispersed phases