che 308 - chemical process analysis sessional. a hydrogen peroxide plant is to be set-up at...
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WELCOME
ChE 308 - Chemical Process Analysis Sessional
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HYSYS SIMULATION PROJECT
100 MTPD HYDROGEN PEROXIDE (50%) PLANT
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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.
DEFINITION OF THE PLANT
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NG from TITAS Gas◦ Methane > 96 % (V/V)◦ Calorific Value > 1000 Btu◦ Pressure > 240 kPa◦ Temperature about 5-15 oC
Air Water
SPECIFICATION OF RAW MATERIALS
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H2O2 specification:
H2O2 content 50% Free acid (as H2SO4) 0.040% max. Non-volatile matter 0.080% max. Stability 97.0% min. Freezing point -52.2°C Boiling point 113.8°C Density 1191 kg/m3
SPECIFICATION OF PRODUCT
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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.
PROCESS SELECTION
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Geological Data
Location
The site for the plant is selected on the bank of river Meghna at Baluakandi under Gazaria upzilla in Munshiganj district.
Load bearing capacity: The soil has a bearing capacity of 0.38 ton/ft2
required piling is used. Corrosive tendency: Non Corrosive
DESIGN BASIS
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Climatic condition
Dry bulb temperature (maximum) 35 oC (summer) Dry bulb temperature (maximum) 26 oC (winter)
Wet bulb temperature (maximum) 29 oC (summer) Wet bulb temperature (maximum) 22 oC (winter)
DESIGN BASIS (Contd.)
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Meteorological condition
Average monthly Temperature 35oC (max.) Average Temperature 30oC Average annual rainfall 2850 mm Wind flow
Direction = South to NorthVelocity = 52 mile/h
DESIGN BASIS (Contd.)
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Utility Electric Power
◦ Voltage 380/220 V◦ Frequency 50 Hz◦ Phase 3 phases
Cooling Water Inlet Outlet
Temperature < 30 oC 38 oCPressure 0.5 MPa 0.2 MPaTurbidity ≤ 50 mg/lChlorine < 5 ppm
PH 6.5 – 8
DESIGN BASIS (Contd.)
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Four main stages involved:
1. Hydrogen Generation ( Reformer)
2. Hydrogenation
3. Oxidation
4. Extraction and Purification
PROCESS INVOLVED
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A. Reformer: CH4+H2O = CO+3H2 - Q
CO + H2O = CO2+H2 + Q
B. Hydrogenation And Oxidation tower:
REACTIONS INVOLVED
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PROCESS BLOCK DIAGRAM
REFORMERREFORMERPRESSURE
SWINGADSORBER
PRESSURE SWING
ADSORBERHYDROGENATION
TOWER
HYDROGENATION TOWER
OXYDATIONTOWER
OXYDATIONTOWER
EXTRACTIONTOWER
EXTRACTIONTOWER
SEPARATORSEPARATOR
DSVDSV
PURIFICATIONTOWER
PURIFICATIONTOWER
H2O2
STORAGETANK
H2O2
STORAGETANK
Tail Gas
SEPARATOR
SEPARATOR
NG
Steam Tall Gas
Water
WSMake
Up
DRYING TOWER
Air
Tail Gas
Water
WS STORAGE
TANK
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PROCESS FLOW DIAGRAM
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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
EQUIPMENT LIST
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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
EQUIPMENT LIST (Contd.)
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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
EQUIPMENT LIST (Contd.)
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THANK YOU