Preparing airflow intelligence
Calibrating industrial-grade components and rendering the next section.
Design principles and material strategies for fans handling corrosive gases in chemical and petrochemical facilities.
Corrosion is the primary life-limiting factor for fans in chemical and petrochemical plants. Selecting the wrong material can result in catastrophic impeller failure within months, while the right choice delivers decades of reliable service.
The corrosion mechanism must be identified before material selection. Uniform corrosion, pitting, crevice corrosion, stress corrosion cracking, and erosion-corrosion each require different mitigation strategies.
For mildly corrosive environments (pH 5–9, no chlorides), 304 stainless steel provides adequate protection. Chloride-containing environments require 316L stainless steel or higher alloys. Highly acidic or alkaline conditions may require Hastelloy C-276 or FRP construction.
Protective coatings provide a cost-effective alternative to exotic alloys for moderate corrosion service. Epoxy coatings, rubber linings, and fluoropolymer coatings (PTFE, PVDF) are commonly applied to carbon steel fans for chemical service.
Aerotech's BT-90 Industrial Blower is available in 316L stainless steel with ATEX certification for explosive atmospheres, making it suitable for the most demanding chemical plant applications.
