Petrochemical Industry
Air-Suspension Blowers Optimize Desulfurization and Process Air in Petrochemical Operations
A large petrochemical complex in eastern China, producing olefins and aromatics, faced operational challenges with its flue gas desulfurization (FGD) unit and pneumatic conveying systems. The legacy Roots blowers consumed excessive energy, generated noise above 100 dB, and risked oil carryover that could contaminate catalysts and process streams. With tightening emission regulations and rising energy costs, the facility sought an upgrade to improve efficiency and environmental compliance .
The plant replaced its conventional blowers with an integrated ”air-suspension centrifugal blower” system featuring air-foil bearings, a high-speed permanent magnet motor, and a Variable Frequency Drive (VFD). The technology delivers ”100% oil-free, Class 0 certified” compressed air, eliminating contamination risks in sensitive petrochemical processes .
The air-suspension blowers serve two critical applications:
Flue Gas Desulfurization (FGD) Oxidation: The blowers supply precisely controlled oxidation air to the FGD tower, converting calcium sulfite into commercial-grade gypsum. The VFD enables stepless airflow adjustment to match fluctuating SO₂ loads, ensuring stable desulfurization efficiency. Pneumatic Conveying: Oil-free air transports powdered catalysts and additives without risk of contamination, protecting product quality and process stability .
The equipment uses corrosion-resistant materials to withstand acid gas erosion, and an intelligent control system enables real-time monitoring and remote regulation—critical for continuous petrochemical production .
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Result
After commissioning, the plant achieved:
Energy Savings:
Power consumption dropped by over ”30%” compared to the Roots blowers, saving approximately 500,000 kWh annually.
Noise Reduction:
Noise levels decreased from >100 dB to below ”80 dB”, greatly improving the working environment .
Emission Reduction:
Sulfur dioxide emissions were cut by over ”500 tons annually”, significantly improving environmental compliance.
Maintenance Reduction:
Oil-free operation eliminated lubricant costs and mechanical wear, reducing maintenance expenses by over 90% and enabling long-term reliability.
Conclusion:
This case demonstrates that air-suspension blowers offer a reliable, high-efficiency solution for petrochemical desulfurization and material handling. By replacing outdated oil-lubricated equipment, the facility achieved substantial energy cost reductions, enhanced environmental performance, and improved workplace safety—delivering a rapid return on investment while supporting the industry’s green transformation.
