- Stage evaporator
- Pre-reactor
- Main reactor
- Stripping column
Stage evaporator:
The input to the stage evaporator: Recycle gas, Crude benzol.
Output : Crude benzol vapors, Residue.
Inlet temperature of Crude Benzol = 1600c
Outlet temperature of Crude Benzol vapor = 1800c
Inlet temp recycle gas = 1600c
Outlet temperature of RC gas = 1800c
Input mass flow rate of Crude Benzol = 60tons / day
Output mass flow rate of Crude Benzol vapor and rc gas = 58tons/day
Input mass flow rate of RC gas = 2 tons / day
Out mass flow rate of residue = 4tons / day
Balance on impurities :
hydrogen in :
H = Q = mCpdt
= 2X265.649X (433-298) X1000
=8628.5 KJ/day
hydrogen gas out :
H = Q = mCpdt
= 2X267.1613X(453-298)
=9961.5 KJ/day
benzene in :
H = Q = mCpdt
= 0.75x60x1000x820.58(433-298)
=598989.656 KJ/day
benzene out :
H = Q = mCpdt
= 0.75X56X1000X840.206(453-298)
=657324.9 KJ/day
toluene in:
H = Q = mCpdt
=0.15X60X1000X1044.166(433.-298)
=154763.05 KJ/day
toluene out :
H = Q = mCpdt
=0.15X56X1000X1068.389X(453-298)
=20109.198 KJ/day
xs fraction in :
H = Q = mCpdt
= 0.05X60X1000X1293.17X(433-298)
=123646.86 KJ/day
xs fraction out:
H = Q = mCpdt
=0.05X56X1000X1320.15(453-298)
=68907.86 KJ/day
Balance on impurities :
oxygen in :
H = Q = mCpdt
=0.01X1000X60X253.27(433-298)
=2467.11 KJ/day
oxygen out :
H = Q = mCpdt
=0.01X1000X56X254.419(453-298)
=2656.189 KJ/day
nitrogen in :
H = Q = mCp dt
=0.02X60X1000X247X(433-298)
=4829.24 KJ/day
nitrogen out :
H = Q= mCpdt
=0.02X56X1000X248.475(453-298)
=5188.268KJ/day
sulfur in :
H = Q = mCpdt
= 0.03X60X1000X289.4(433-298)
=8458.777KJ/day
sulfur out :
H = Q = mCpdt
=0.03X56X1000X298.954X(453-298)
=9463.45KJ/day
ENERGY IN = 901783.7KJ/day
ENERGY OUT = 892436.2kj/day