Click to enlargeComplete Plant PP1

    * 70,000 ton/yr
    * Montedison Technology
    * High yield catalyst FT1/SS
    * Homopolymer
    * 50% compounding capacity

The TWO polymerization reactor unit is based on the Montedison Process. The polymerization reaction and the subsequent treatments are carried out in hexane. Hexane acts as catalyst fluid, polymer carrier fluid and as intermediate medium to transfer reaction heat to the cooling system and as solvent for atactic by-products. Due to the high yield catalyst system a removal of residual catalyst from the product is not necessary. The polymerization unit consists of two reactors, catalyst and raw material feed systems, cooling system, dry end and the recovery system for hexane, propylene and atactic products. Click to see flow chart.

Click to enlargeComplete Plant PP2

    * 70,000 ton/yr
    * Mitsui Technology
    * High yield catalyst FT1/SS
    * Homopolymer
    * W&P ZSK160 twin screw extruders

The FOUR polymerization reactor unit is based on a unique slurry polymerization process by Mitsui Petrochemical Industries. The system was used to produce homopolymer polypropylene products in the first two reactors or propylene-ethylene copolymers when using all reactors. In the latter case, the first two reactors were used as homo polymerization reactors and the last two reactors as ethylene-propylene random reactors. In this case, the homo matrix was modified with an additional rubber content. The polymerization reaction and the subsequent treatments are carried out in hexane. Hexane also acts as catalyst fluid, polymer carrier fluid and as intermediate medium to transfer reaction heat to the cooling system and as solvent for atactic by-products. The polymerization unit consists of the four reactors, catalyst and raw material feed systems, cooling system, dry end part and the recovery system for hexane, propylene and atactic PP products. Click to see flow chart. Click to see Flyer for both plants.
    
    

Plant 3

Complete 80,000 ton/yr POLYPROPYLENE plant, Amoco process using C6 solvent, without catalyst washing. Three (3) reactor trains of 120m3 each. Products are homopolymer, copolymer random and impact. Plant has achieved throughputs of 115 ton/yr.
    
    

Plant 4

60,000 ton/yr Polypropylene plant, Mitsui Technology, producing 95% PP and 5% Atactic polymers. Built mid 1980’s. Autoclave polymerization in 4 polymerizers, 88m3 and 3 at 50m3. Plant consists of 9 technological sections:

   1. Catalyst Preparation
   2. Polymerization
   3. Disabling – Centrifugal section
   4. Drying
   5. Granulation
   6. Methanol Recovery
   7. Hexane Recovery
   8. Utilities
   9. Packaging

            
    

Plant 5

110,000 tpa slurry copolymer polypropylene plant, Mitsubishi technology, using a second generation Ziegler-Natta catalyst and heptane as solvent.
    

Plant 6

120,000 tpa slurry copolymer polypropylene plant, Mitsubishi technology, using a second generation Ziegler-Natta catalyst and heptane as solvent. Built 1990’s