hdpe final
TRANSCRIPT
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SAMPLE PFD OF NAPHTHA CRACKING
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What is Polymer?
Poly = many
mers = small units (Monomer)Polymer = Poly + mers = many small units linked together
Ethylene
(Polyethylene)
Polymerization
and So on
Ethylene+Ethylene+Ethylene
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Basic property Process control
1. MFI :- Melt Flow Index ( gm/10min.)MFI is control by- H2/C2 Molar Ratio in Gas Phase- Catalyst Conc. In Reactor
2. DensityDensity is control by Co-monomer feed rate
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What is HDPE ?H High
D Density( > 0.95 gm/cc)
P Poly
E Ethylene
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HDPE IN A NUTSHELL
Raw Material:
Ethylene
PropyleneButene-1
Hydrogen
Catalyst
Co Catalyst
Solvent:
n-Hexane
Utility:
SteamPower
Water
Nitrogen
Air
HDPE Process:
Catalyst Preparation
Polymerisation
Seperation & Drying
Extrusion
Solvent recovery
Product Handling
Bagging
Logistic
CustomerHDPE ServiceDepartment
HDPEManufacturing
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Process F low Diagram of HDPE Manufac tur ing
Butene
Hydrogen
Ethylene
Hexane Reactor 1 & 2
Flash Drum
Mother Liquor Holding Drum
Hexane Holding Drum
Centrifuge
Dilution Drum 1 & 2
Hexane Str ipping Column
Catalyst Section
Powder Dryer
Crude/Imported Hexane Storage
Pellet to Silo
Extruder
Powder Silo
Low Polymer
Hexane De-hydrator
Pure Hexane Storage C-703
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CENTRIFUGE
Purpose:- To separate hexane from PE powder. It comprises with a bowl, a screw & planetary gear.
Bowl is rotated by a motor & it rotates the planetary gear. Screw is attached with the planetary gear . Due to the differential speed between the screw & the bowl
powder getsseparated from hexane.
Pool depth of the liquid is maintained by Dam height
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ROTARY STEAM TUBE DRYER
Purpose : - To remove hexane from HDPE powder(38% to 0.2%) Inside there are steam tubes which carries steam Wet powder comes in touch with steam tubes in counter flowdesign along with hot nitrogen
Hexane comes out from the wet powder while comes in touchwith steam tubes. Hot nitrogen carries the hexane vapour.
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EXTRUDER
Purpose:- To form pellets from semi-solid HDPE It consists of Feed Hopper,Screw & Die plate Mixes the polymers & additives in the barrel by twin
screws Extrudes the polymer through the die nozzle as hot
melt strands and cut the extruded strands into pellets in
a water chamber filled with circulating cooling water.
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Thin film for carrybags & trash bags
F5400
P5300P5200
P5200UV
Irrigation/civil/drainage Pipe
Cable/Telecomducting
B5500 20 200 lit drum
E5201E5201S
Small cosmetic &detergent bottle
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M5818 Bottle Crates , Toys
B6401Bottle & Small Jarican
R5801HDT-6
Tarpaulin & fertilizerbags
Packaging
http://images.google.co.in/imgres?imgurl=http://www.tulsamastergardeners.org/soils/fertilizer_bag.jpg&imgrefurl=http://www.tulsamastergardeners.org/soils/soiltest.shtml&h=334&w=250&sz=8&hl=en&start=5&tbnid=7n41f70wgQfkNM:&tbnh=119&tbnw=89&prev=/images?q=Fertilizer+bag&svnum=10&hl=en&lr=&sa=Ghttp://images.google.co.in/imgres?imgurl=www.princemultiplast.com/mainsite/fabri9.jpg&imgrefurl=http://www.princemultiplast.com/mainsite/fabri.htm&h=302&w=310&sz=10&tbnid=FNQ4jnJul6sJ:&tbnh=109&tbnw=111&start=28&prev=/images?q=plastic+crate&start=20&hl=en&lr=&ie=UTF-8&sa=N -
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THANK
YOU