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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