Problem Statement Cont.
A crude stream at 15°C, 1000 kPa and flowrate of 6x105 kg/hr is
mixed with a stream of water at 15°C, 1000 kPa and flowrate of
21600 kg/hr using a Mixer, the outlet from the mixer is then
heated to 65°C through a Heater (Ap=50 kPa),the heater outlet is
feed to the tube side of a Shell & Tube Heat Exchanger, where it's
heated using a Shell inlet stream having the same composition as the
crude feed stream and enters the shell of the heat exchanger at
180°C, 200 kPa and flowrate of 175m³/hr.
The liquid product from the separator is then heated to 400°C inside a Heater (Pressure drop-250 kPa) before entering the Atmospheric Column.
Heat Exchanger Specification:
Use Simple weighted model
- The Shell side outlet Temperature is 95°C
Calculate:
-The vapor fraction of the product stream before
entering the atmospheric column.
Min Approach; This is the minimum temperature difference between
the hot and the cold stream. The vapor molar flow rate from the
Pre-Flash.
The pressure drops for the Tube and Shell sides, will be 35 kPa and 5
kPa, respectively. The tube outlet from the Heat Exchanger is
then sent to a desalter which is simply modeled as Three Phase
Separator where desalted water, oil and gas is separated.
The oil stream (light liquid) from the desalter is then heated to 175°C
through a Heater (Pressure drop=375 kPa) and then sent to a Pre
flash (Separator) to reduce the light components in the feed.
See the part1 &2 simulation
Part 1
Part2
