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Manufacturing Process Chemistry in Life
STEP 1Business Area
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STEP 2Product Name
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    STEP 3Applications
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      • Chemistry for my life - Hanwha chemistry adds value to your everyday life.
      • 06:00 AMI wake up to the chilly morning air. My day starts early but full of energy. EVAEVA is an eco-friendly material with elasticity and softness which makes it ideal for sneaker soles. Its properties of transparency, flexibility and low-temperature sealability also make EVA an ideal material for laminating films and solar-module sheets.
      • 09:00 AMLike everyone else, I move among others, picking up my pace, as I make my way into the subway to go to work . CACaustic soda is essential in a wide range of industrial products including paper, textiles, detergents, metals, food and electrical generation. Chlorine is a natural co-product of caustic soda and is used to produce polycarbonates.
      • 02:00 PMA cup of coffee cheers me up in the middle of a hectic day. PEA polymer with outstanding physical properties and environmental stability, it is found in many different forms of plastic we use every day. Polyethylene coating applied to paper cups prevent leakage.
      • 06:00 PMTime to wrap up! Driving home, my hands tap lightly on the handle. TDIsTDI is a feedstock for PU resin and adhesives. Flexible foams are used in shoes, furniture, automotive components, bedding and toys. Semi-rigid foams are used in car interior materials.
      • 11:00 PMTime to rest up for a fresh start tomorrow. Survived another day, good job! PVCPVC has a wide range of residential applications such as wallpapers, flooring materials, window frames, cable sheathing, stationary and toys.

      Manufacturing ProcessHow we make our products

      01 . LDPE

      See next.
      01 Compressing
      Ethylene is put in the compressor
      See next.
      02 Reacting
      Ethylene is put in the reactor with initiator
      See next.
      03 Extruding and Separating
      LDPE is pelletized and unusedethylene is removed
      See next.
      04 Packing and Shipping
      LDPE is packed and shipped

      02 . PVC

      See next.
      01 Polymerization
      Feedstock are put in reactor and heated
      See next.
      02 Stripping
      Steam is put in to remove unused VCM from slurry
      See next.
      03 Decanting and Drying
      Slurry is dehydrated and dried into powder state
      See next.
      04 Packing and Shipping
      PVC is packed and shipped

      03 . CA

      See next.
      01 Polymerization
      Salt is purified
      See next.
      02 Electrolytic Bath
      In the electrolyzer salt water is broken down into Cl2, CA and H2
      See next.
      03 Transfer and Shipment
      Cl2, CA and H2 are stored and shipped

      04 . TDI

      See next.
      01 Reaction Process
      TDI and HCl are produced
      See next.
      02 By-product Separation Process
      TDI and by-products are separated
      See next.
      03 Refining Process
      TAR and other light products are removed
      See next.
      04 Shipping
      TDI is stored in tanks and shipped by drums

      05 . 폴리실리콘

      See next.
      01 TCS Synthesis and STC Separation
      TCS is synthesized using MG-Si
      See next.
      02 TCS Refining
      TCI is purified
      See next.
      03 CVD(Deposition)
      Polysilicon rods are made
      See next.
      04 Crushing and Packaging
      Polysilicon is packed and shipped

      Process Details

      LDPE Process Details

      • 01

        Compressing

        Put ethylene at gas phase in the Compressor.

        Compressor
        mechanical device used for compressing gas to increase pressure

      • 02

        Reacting

        Put compressed ethylene in the Reactor with Initiator.

        Reactor
        a device used for chemical reaction.

        Initiator
        a substance that initiates a chemical reaction or polymerization.

      • 03

        Extruding and Separating

        In this process, the LDPE product is converted into uniform sized pellets.
        Unreacted ethylene is recovered through a separator and reused.

      • 04

        Packing and Shipping

        Products are stored and inspected before they are shipped.

      PVC Process Details

      • 01

        Polymerization

        VCM, water and raw supplements are put in a reactor and heated.

      • 02

        Stripping

        Slurry (a mixture of solids and liquids) that comes out of the reactor is put into the stripping column through the top. Steam is blown into the bottom of the stripping column to remove unused VCM in the slurry. The left-over VCM is reused.

      • 03

        Decanting and Drying

        The slurry becomes dehydrated by being passed through a decanter (centrifuge). It is then passed through a dryer with coils immersed in hot water. Hot air in the dryer and the coil in hot water maintain the temperature necessary to turn the slurry into a PVC resin of powdery state.

      • 04

        Packing and Shipping

        PVC resin is stored in a silo then packed and shipped.

      CA Process Details

      • 01

        Salt Water Purification

        Salt is dissolved in water through a purification process to remove impurities.

      • 02

        Electrolytic Bath

        After removing impurities, the salt water is put in an electrolyzer to break down into Chlorine, Caustic Soda and Hydrogen.

      • 03

        Transfer and Shipment

        • Chlorine gas is refined and liquefied to be shipped in trucks. They can also be re-vaporized to be sent to VCM/ECH plants or customer plants through pipes.
        • Caustic Soda is concentrated and stored so it can be transported by trucks or ships.
        • Hydrogen goes through refining process to be used as fuel or sent to customers’ plants.

      TDI Process Details

      • 01

        Reaction Process

        TDA and COCl2 produce TDI(main product)
        and HCl(by-product) through TDA Phosgenation.

        TDA
        substance produced by reacting Hydrogen with DNT

        COCl2
        substance produced by reacting Chlorine with CO

      • 02

        By-product Separation Process

        TDI, HCl and other byproducts are separated after being produced in the reaction process.

      • 03

        Refining Process

        TAR and other light products are removed from TDI.

      • 04

        Shipping

        Final TDI product in liquid form is stored and shipped in tanks or drums.

      Polysilicon Process Details

      • 01

        TCS Synthesis and STC Separation

        Mixed Silane gas is generated by reacting MG-Si wtih HCl. Through a distillation process,
        STC(Silicontetrachloride:SiCl4) is separated.

      • 02

        TCS Refining

        TCS (Trichlorosilane: SiHCl3) produced with the TCS synthesis process is refined to make pure TCS.

      • 03

        CVD(Deposition)

        Pure TCS is put into a bell-jar type reactor where through CVD (Chemical Vapor Deposition), it decomposes at high temperature to produce rod-shaped Polysilicon. Mixed gas generated with this process is separated and reused.

      • 04

        Crushing and Packaging

        The harvested silicon rods are crushed into various forms such as chunks and chips and packed and shipped.