The chemical industry is recognized as an “enabling industry” by the European Commission for its crucial role in providing innovative materials and technological solutions across the EU’s industrial landscape. In 2018, EU chemical sales amounted to €565 billion, about 17% of global sales, supporting an estimated 19 million jobs in value chains. Concurrently, the energy sector (covering extraction, production, and distribution) directly employs about 1.6 million people in the EU and generates an added value of approximately €250 billion. Within this vast and critical industrial ecosystem, fluoropolymers, with their unique properties, are key materials ensuring safety, enhancing efficiency, and driving sustainable development.
Core Value: Safety, Efficiency, and Sustainability
The exceptional properties of fluoropolymers—including outstanding chemical resistance, high thermal stability, superior durability, non-stick properties, and low surface energy—deliver fundamental benefits:
Safety Assurance: As protective equipment and linings, they enable the safe storage and handling of the most corrosive substances on the market (e.g., concentrated sulfuric acid, hydrofluoric acid, chlorine), protecting personnel and equipment.
Efficiency & Cost Reduction: Their corrosion, leak, and fouling prevention significantly reduce unplanned downtime, lower maintenance costs, and extend equipment lifespan (e.g., PTFE-lined reactors can last multiples longer than ordinary steel), while improving production yield and product purity.
Emission Reduction: In the power sector, fluoropolymer components in flue gas desulfurization (FGD) units and mercury control systems effectively reduce emissions of SO₂, particulates, and mercury, contributing to cleaner combustion.
Material Deep Dive: FEP, PFA, PTFE, PVDF, THV
In harsh industrial environments, different fluoropolymers are precisely applied based on their characteristics:
PTFE (Polytetrafluoroethylene): The benchmark for chemical resistance, resisting virtually all chemicals. Widely used for linings of pipes, valves, pumps, storage tanks, and for seals (gaskets, packing rings).
PFA (Perfluoroalkoxy alkane): Offers chemical resistance comparable to PTFE with better melt processability. Often used for high-purity fluid transfer lines and linings for semiconductor etching chambers.
FEP (Fluorinated Ethylene Propylene): Provides good clarity and flexibility, used for sight glasses/level gauges requiring internal visibility and for corrosion-resistant cable insulation.
PVDF (Polyvinylidene Fluoride): Known for excellent UV, radiation, and abrasion resistance. Used in fluid handling and filtration systems in the nuclear industry, outdoor cable sheathing, and as a binder in lithium-ion batteries.
THV (Tetrafluoroethylene-Hexafluoropropylene-Vinylidene Fluoride Terpolymer): Offers exceptional flexibility, clarity, and bondability. Suitable for complex flexible chemical transfer hoses, expansion joints, and piping requiring frequent flexing.
Forward-Looking Applications: Driving the Green Energy Transition
Fluoropolymers are not just protectors of traditional industry but are central to future green technologies:
Revolution in Chlor-Alkali Industry:
Perfluorosulfonic/carboxylic ion-exchange membranes (e.g., Nafion™, a fluoropolymer based on a PTFE backbone) are the heart of modern membrane cell technology. Replacing older, energy-intensive mercury and asbestos diaphragm processes, they have improved chlorine and caustic soda production efficiency by ~30%, reduced energy consumption by ~25%, and eliminated mercury pollution.
Energy Storage & Conversion:
In Vanadium Redox Flow Batteries (VRFB), PFSA (Perfluorosulfonic Acid) membranes are key components that allow selective proton passage while blocking vanadium ion crossover, directly determining battery efficiency and lifespan. In hydrogen fuel cells, the same fluoropolymer membrane serves as the Proton Exchange Membrane (PEM), the heart that converts hydrogen into electricity.
Advanced Filtration & Emission Control:
Filter bags made from ePTFE (expanded Polytetrafluoroethylene) membrane are used in flue gas treatment of coal-fired power plants or waste incinerators, capable of capturing sub-micron particles with >99.99% efficiency. In mercury control systems, fluoropolymers are used in fixed sorbent systems to capture gaseous mercury from industrial flue gas.
Overview of Application Areas
From chemical production to power transmission, fluoropolymers penetrate every link:
Chemical Process Equipment: Linings and seals for reactors, storage tanks, heat exchangers, column packing, pipes, pumps, and valves.
Power Facilities: Cable insulation (especially for high-temperature/corrosive environments), flue gas cleaning systems (FGD scrubbers, dust collectors), fluid handling systems in nuclear power plants.
Environmental & Energy: Membrane modules for wastewater treatment, fuel cell MEAs, flow battery separators, backsheet films for solar panels.
High-Purity Fields: Ultra-pure chemical delivery systems in semiconductor manufacturing, process piping in the pharmaceutical industry.
Conclusion
Fluoropolymers such as PTFE, PFA, FEP, PVDF, and THV, with their irreplaceable chemical inertness and physical stability, form the foundation for the safe and efficient operation of the modern chemical and power industries. They are not only the “armor” against extreme corrosion but also critical “links” connecting current industry with a sustainable future—such as the hydrogen economy and large-scale energy storage—continuously enabling the green transition and enhanced competitiveness of European and global industry.
Source: Adapted from Fluoropolymers.eu
https://fluoropolymers.eu/essential-uses-of-fps/chemical-and-power-industry
