Polimerisasi Polietilena

Plastik yang paling banyak diproduksi di dunia

Petrochemical & Refining Global Industrial Scale $140 billion

Ikhtisar

Polyethylene (PE) is the most produced plastic globally, manufactured through the catalytic polymerization of ethylene. Three major grades are produced: HDPE (Ziegler-Natta or chromium catalysts), LDPE (free-radical high-pressure process), and LLDPE (gas-phase or solution process with metallocene catalysts). Applications range from packaging films and bottles to pipes and automotive parts. The development of PE catalysts by Ziegler and Natta, who won the 1963 Nobel Prize, transformed materials science.

Proses Kimia

For HDPE: ethylene is polymerized at 80-150 degrees C and 10-80 bar using Ziegler-Natta (TiCl₄/MgCl₂ + AlEt₃) or Phillips (CrO₃/SiO₂) catalysts in gas-phase fluidized bed or slurry reactors. For LDPE: ethylene is polymerized at 150-300 degrees C and 1000-3000 bar using peroxide initiators.

nCH₂=CH₂ →[catalyst] −(CH₂−CH₂)ₙ− (addition polymerization, ΔH = −93.6 kJ/mol)

Bahan Baku

  • Ethylene (C₂H₄) — Steam cracking (Monomer)
  • 1-Hexene or 1-butene — Oligomerization of ethylene (Comonomer (for LLDPE))
  • Ziegler-Natta catalyst (TiCl₄/MgCl₂) — Chemical synthesis (Polymerization catalyst)

Produk Akhir

  • Polyethylene resin (pellets) — Films, bottles, pipes, containers (HDPE, LDPE, LLDPE grades)
<path stroke-linecap="round" stroke-linejoin="round" d="M12 9v3.75m-9.303 3.376c-.866 1.5.217 3.374 1.948 3.374h14.71c1.73 0 2.813-1.874 1.948-3.374L13.949 3.378c-.866-1.5-3.032-1.5-3.898 0L2.697 16.126zM12 15.75h.007v.008H12v-.008z" />

Environmental Impact

Polyethylene production consumes significant energy and fossil feedstocks. PE waste is a major contributor to plastic pollution in oceans and landfills. Only about 30% of PE is recycled globally. Microplastic formation from PE degradation is an emerging environmental concern.

Pertimbangan Keselamatan

Inovasi Terbaru

Chemical recycling via pyrolysis converts PE waste back to monomers.
Bio-based polyethylene from sugarcane ethanol (Braskem I'm green PE) provides a renewable alternative.
Single-site metallocene catalysts enable precise control of molecular architecture.

Skala Produksi

110000000

ton/tahun

$140 billion

nilai pasar

Lebih banyak di %(name)s Petrochemical & Refining

Distilasi Fraksional Minyak Mentah

Global Industrial Scale

Produksi Etilena Oksida melalui Oksidasi Berkatalis Perak

Global Industrial Scale

Produksi Poliester PET melalui Polikondensasi

Global Industrial Scale

Produksi Polipropilena melalui Katalisis Ziegler-Natta

Global Industrial Scale

Reformasi Katalitik untuk Bensin Oktan Tinggi

Global Industrial Scale

Sintesis Fischer-Tropsch untuk Bahan Bakar Sintetis

Commercial Production

Steam Cracking untuk Produksi Etilena

Global Industrial Scale

Frequently Asked Questions

What industry uses Polimerisasi Polietilena?
Polimerisasi Polietilena is used in the petrochemical & refining sector at global industrial scale scale.
What process is involved in Polimerisasi Polietilena?
For HDPE: ethylene is polymerized at 80-150 degrees C and 10-80 bar using Ziegler-Natta (TiCl₄/MgCl₂ + AlEt₃) or Phillips (CrO₃/SiO₂) catalysts in gas-phase fluidized bed or slurry reactors. For LDPE: ethylene is polymerized at 150-300 degrees C and 1000-3000 bar using peroxide initiators.
What is the economic significance of Polimerisasi Polietilena?
Polimerisasi Polietilena has a market value of $140 billion and annual production of 110,000,000 tons.
What is the environmental impact of Polimerisasi Polietilena?
Polyethylene production consumes significant energy and fossil feedstocks. PE waste is a major contributor to plastic pollution in oceans and landfills. Only about 30% of PE is recycled globally. Microplastic formation from PE degradation is an emerging environmental concern.
What raw materials are used in Polimerisasi Polietilena?
The main raw materials include: Ethylene (C₂H₄), 1-Hexene or 1-butene, Ziegler-Natta catalyst (TiCl₄/MgCl₂).