ChE 308 - Chemical Process Analysis Sessional
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A hydrogen peroxide plant is to be set-up at
Gazaria, Munshiganj having a capacity of 100
metric ton of hydrogen per oxide (50 % w/w)
per stream day, corresponding to 33,000
metric ton of hydrogen peroxide(50% w/w)
per year,
including all off sites, auxiliaries,
utilities and supporting facilities using natural
gas as feedstock and fuel.
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NG from TITAS Gas
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Methane
> 96 % (V/V)
Calorific Value > 1000 Btu
Pressure
> 240 kPa
Temperature about 5-15 oC
Air
Water
SPECIFICATION OF PRODUCT
H2O2 specification:
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H2O2 content
Free acid (as H2SO4)
Non-volatile matter
Stability
Freezing point
Boiling point
Density
50%
0.040% max.
0.080% max.
97.0% min.
-52.2°C
113.8°C
1191 kg/m3
 By
Auto-oxidation of alkylanthraquinones
 By Electrolysis from Ammonium Bisulfate.
 From Barium Peroxide
 By oxidization of isopropanol
Auto-oxidation of 2-ethylalkylanthraquinone
is selected for this project.
Geological Data
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Location
The site for the plant is selected on the bank of river
Meghna at Baluakandi under Gazaria upzilla in
Munshiganj district.
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Load bearing capacity:
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Corrosive tendency:
The soil has a bearing
capacity of 0.38 ton/ft2
required piling is used.
Non Corrosive
Climatic condition
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Dry bulb temperature (maximum)
Dry bulb temperature (maximum)
35 oC (summer)
26 oC (winter)
Wet bulb temperature (maximum)
Wet bulb temperature (maximum)
29 oC (summer)
22 oC (winter)
Meteorological condition
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Average monthly Temperature
Average Temperature
Average annual rainfall
Wind flow
Direction = South to North
Velocity = 52 mile/h
35oC (max.)
30oC
2850 mm
Utility
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Electric Power
◦ Voltage
◦ Frequency
◦ Phase
380/220 V
50 Hz
3 phases
Cooling Water
Inlet
Temperature < 30 oC
Pressure
0.5 MPa
Turbidity
≤ 50 mg/l
Chlorine
< 5 ppm
PH
6.5 – 8
Outlet
38 oC
0.2 MPa
Four main stages involved:
1.
Hydrogen Generation ( Reformer)
2.
Hydrogenation
3.
Oxidation
4.
Extraction and Purification
A.
Reformer:
 CH4+H2O = CO+3H2 - Q
 CO + H2O = CO2+H2 + Q
B.
Hydrogenation And Oxidation tower:
Tail Gas
Tall Gas
Steam
NG
DSV
REFORMER
SEPARAT
OR
Water
PRESSURE
SWING
ADSORBER
WS
Make
Up
HYDROGENATION
TOWER
WS
STORAGE
TANK
DRYING
TOWER
H2O2
STORAGE
TANK
PURIFICATION
TOWER
OXYDATION
TOWER
EXTRACTION
TOWER
Water
Air
Tail Gas
SEPARATOR
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Natural Gas Knock Out Drum
Feed Gas Compressor
Desulfurization Vessel
Desulfurization Vessel
Water Tank
BFW Pump
Stack
Heat Exchanger
Waste Heat Boiler
Reformed Gas Cooler
Raw Gas Separator
Pressure Swing Adsorber
Induced Draft Fan
Reformer
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Static Mixer
Hydrogenation Tower
Working Solution Pump
Working Solution Storage Tank
Hydrogenated Solution Storage Tank
Hydrogenated Solution Pump
Hydrogenated Solution Cooler
Air Compressor
Oxidation Tower
Oxidation Solution Separator
Tail Gas Condenser
Oxidation Solution Cooler
Wet Gas Separator
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Extraction Column
Working Solution Separator
Recycled Working Solution Pump
Extraction Water Pump
Recycled Working Solution Heater
Purification Column
Hydrogen Peroxide Storage Tank