Souders-Brown Equation
Souders-Brown equation is used to find the maximum allowable vapor velocity in vapor-liquid seperation vessels.
Souders-Brown Equation formula
\(\large{ v = K \; \sqrt{ \frac{\rho_l \;-\; \rho_v}{\rho_v} } }\) |
Where:
\(\large{ v }\) = maximum allowable vapor velocity
\(\large{ \rho_l }\) (Greek symbol rho) = density of liquid
\(\large{ \rho_v }\) (Greek symbol rho) = density of vapor
\(\large{ K }\) = vapor velocity factor
K Factors for maximum allowable superficial velocity (API Spec 12J)
- Vertical separator - 5 ft. high - K = 0.12 to 0.24
- Vertical separator - 10 ft. high - K = 0.18 to 0.35
- Horizontal separator - 10 ft. long - K = 0.40 to 0.50
- Horizontal separator - Other lengths L ft. long - K = 0.40 to 0.50 \(\left( \frac{L}{10}\right)^{0.56} \)
- Spherical separator - All - K = 0.2 to 0.35
Tags: Equations for Velocity Equations for Flow Equations for Separators