폴리에틸렌 중합

세계에서 가장 많이 생산되는 플라스틱

Petrochemical & Refining Global Industrial Scale $140 billion

개요

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.

화학 공정

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)

원자재

  • 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)

최종 제품

  • Polyethylene resin (pellets) — Films, bottles, pipes, containers (HDPE, LDPE, LLDPE grades)
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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.

안전 고려사항

최근 혁신

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.

생산 규모

110000000

톤/년

$140 billion

시장 가치

더 보기: Petrochemical & Refining

고옥탄가 가솔린을 위한 접촉 개질

Global Industrial Scale

에틸렌 생산을 위한 스팀 분해

Global Industrial Scale

지글러-나타 촉매법에 의한 폴리프로필렌 생산

Global Industrial Scale

합성 연료를 위한 피셔-트롭시 합성

Commercial Production

원유 분별 증류

Global Industrial Scale

은 촉매 산화에 의한 에틸렌 옥사이드 생산

Global Industrial Scale

중축합에 의한 PET 폴리에스터 생산

Global Industrial Scale

Frequently Asked Questions

What industry uses 폴리에틸렌 중합?
폴리에틸렌 중합 is used in the petrochemical & refining sector at global industrial scale scale.
What process is involved in 폴리에틸렌 중합?
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 폴리에틸렌 중합?
폴리에틸렌 중합 has a market value of $140 billion and annual production of 110,000,000 tons.
What is the environmental impact of 폴리에틸렌 중합?
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 폴리에틸렌 중합?
The main raw materials include: Ethylene (C₂H₄), 1-Hexene or 1-butene, Ziegler-Natta catalyst (TiCl₄/MgCl₂).