Sour Water Stripper Flowsheet

The process flow diagram and operating conditions for this

simulation are shown in the Process Diagram: Sour Water Stripper.

Two feed streams, one containing sour water, the other steam, are

fed to a stripper to remove CO2, H2S, and NH3 from the sour water.

Use RadFrac to simulate the stripper.

SOURWAT

STEAM

BOTTOMS

VAPOR

Temperature = 190 F

Pressure = 15 psi

Total flow = 10,000 lb/hr

Mass fraction H2S = 0.001

Mass fraction NH3 = 0.001

Mass fraction CO2 = 0.001

Mass fraction H2O = 0.997

Pressure = 15 psi

Saturated vapor

Estimated H2O

flow rate = 2,000 lb/hr

Above

Stage 3

On Stage

5.0 ppm NH3

9 Theoretical stages + condenser

Pressure = 15 psi

Estimated molar reflux ratio = 25

Condenser temperature = 190 F

saturated vapor distillate

Process Diagram: Sour Water Stripper

The specifications for the column are:

• 10 theoretical stages total (includes one for the condenser)

• Distillate product as saturated vapor (partial condenser)

• Initial estimate for molar reflux ratio = 25

• No reboiler

• Feed stream SOURWAT above stage 3

• Feed stream STEAM on stage 10

• Column pressure of 15 psi (isobaric)

• Vary the reflux ratio and stream STEAM feed rate to achieve a

bottoms product with 5 ppm (mass) of NH3 and a condenser

temperature of 190° F

Getting Started - Electrolytes Modeling a Sour Water Stripper • 3-3

Дата добавления: 2015-08-20