hazrul adzfar bin shabri 55201112104 nur irdani idris 55201112111 siti norlaila faeizah binti mohd...
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Hazrul Adzfar Bin Shabri 55201112104
Nur Irdani Idris 55201112111
Siti Norlaila Faeizah Binti Mohd Rudin 55202112056
CPB 20004 PLANT UTILITIES AND MAINTENANCE
ASSIGNMENT 1
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Content
Introduction
Basic Process
Steam reforming
Water system
Fuel gas system
Steam system
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Linde’s Engineering Hydrogen and Synthesis Gas Plant Gas processing plant Synthesis gas:
Mixture of gas containing primarily hydrogen, carbon monoxide and some carbon dioxide
Use in production of ammonia, methanol and synthetic natural gas
Hydrogen gas Used in production of ammonia, methanol etc
Introduction
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Hydrogen plant in China built by Linde’s Engineering
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1. Hydrodesulfurization of feed stock2. Steam reforming3. Heat recovery from reformed and from
combustion flue gas to produce process and export steam
4. Single stage adiabatic high temperature 5. CO-shift conversion6. Final hydrogen purification by pressure swing
adsorption
Basic process
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Produce hydrogen from fuel gas and steam CH4+H20CO +3H2
Steam reforming
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Utilities involved
Water System
Fuel System
Steam system
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Using DEMINERALISED WATER. Produces high quality water free from any
kind of minerals. Uses specially-manufactured ion exchange
resins which provides ion exchange site for the replacement of the mineral salts in water with water forming H+ and OH- ions.
Water system
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Feed water is passed through two small polystyrene beds filled with ion exchange resins.
The cations present in water get exchanged with hydrogen ions in first bed.
And the anions are exchanged with hydroxyl ions, in the second bed.
These units remove Cationic ions from the water
Then the water enters through the Strong Base Anions and Anions get removed from the water stream
Mixed Bed units polishes the water, greatly reducing the conductivity level
Finally the demineralized water is then passed to the storage tank
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Consisting primarily of hydrogen, carbon monoxide, and some carbon dioxide.
To produce hydrogen using steam reforming method of natural gas or liquid hydrocarbons.
A device (reformer): reacts steams to high temperature produced by fossil fuel.
Fuel gas system
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Steam system
Produced in steam generator, or boiler
1. Fire Tube Boiler
2. Water Tube Boiler
3. Packaged Boiler
4. Fluidized Bed (FBC) Boiler
5. Stoker Fired Boiler
6. Pulverized Fuel Boiler
7. Waste Heat Boiler
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Steam generator: Device used to boil a water to create steam. heaters made with coils made of seamless tubes feed water is preheated and evaporated during the
flow The heat is transferred to the water/steam mixture
as radiant heat in the combustion chamber, inner cylindrical tube coil and a flat tube coil forms
the chamber wall and the bottom respectively.
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Converts low pressure steam to high pressure steam
1. Dynamic1. Centifugal2. Axial
2. Positive displacement1. Reciprocating2. Rotary
Compressor
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In conclusion plant utility is the heart of the plant serving all kinds of life blood to the complex system. Without them, most of the equipment cannot operate.
Basically all of the systems serve almost the same purposes depending on the type of operation.
Therefore, as chemical students, utilities in plant are one of the most important basics and fundamental in plant study that should be concerned about.
Conclusion
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http://www.lindeengineering.com/en/process_plants/hydrogen_and_synthesis_gas_plants/index.html
http://www.lindeengineering.com/en/process_plants/hydrogen_and_synthesis_gas_plants/gas_products/index.html
References