Solution By Demannd
Retrofit of Legacy VPSA Equipment — Capacity Upgrade
A retrofit solution for aging VPSA oxygen systems designed to restore performance and increase production capacity without full equipment replacement. Through core component upgrades and system optimization, it improves efficiency, reduces energy consumption, and extends equipment service life at significantly lower investment cost.
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Higher Capacity+10% output
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Lower Energy Use-20% consumption
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System UpgradeCore retrofit
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Extended LifespanLonger service life
Pain Points of the Demand
Aging VPSA equipment suffers from declining output, rising energy consumption, frequent faults, and below-spec purity. Full replacement is costly, so clients seek retrofit to enhance capacity, optimize performance, and extend service life.
End-to-End Solution
Scheme Design
Comprehensive inspection of existing equipment identifies aging and performance gaps (adsorber seal defects, adsorbent pulverization, valve wear, suboptimal control logic). Customized retrofit plans include adsorber structural modification, adsorbent upgrade (to high-efficiency lithium-based type), valve replacement (suited to high-frequency PSA switching), and control system optimization — targeting 10%+ capacity increase and 20%+ energy reduction, meeting or exceeding new-equipment standards.
Project Installation Guidance
Senior retrofit engineers VPSA supervise dismantling, component replacement, and system commissioning, rigorously controlling process and quality.
Construction
Flexible schedules avoid production peaks, with phased retrofit (e.g., one train at a time) to maintain oxygen supply. At Zhuhai Yuefengyuan, 4 trains were phased-retrofitted, with partial completion and successful one-shot startup within two months.
Acceptance and Delivery
Capacity, purity, energy consumption, and stability are fully verified against retrofit targets, with operator training and retrofit documentation provided.
Equipment Operation and Maintenance
Post-retrofit warranty service with scheduled inspection and parameter optimization maintains long-term effectiveness, plus long-term O&M including spare parts, adsorbent replacement, and troubleshooting.
Engineered Solutions Built for Performance
Typical Cases
12,500 Nm³/h VPSA Oxygen Plant for Changjiang Steel
PKU Pioneer successfully commissioned a 12,500 Nm³/h VPSA oxygen plant for Changjiang Steel, helping reduce liquid oxygen dependence and significantly lower blast furnace oxygen enrichment costs. The project was completed in just 73 days and delivers daily savings exceeding $14,285, further strengthening energy efficiency and cost competitiveness for large-scale steel production.
12,500 Nm³/h VPSA Oxygen Plant for Copper Smelting
PKU Pioneer successfully commissioned a 12,500 Nm³/h VPSA oxygen plant for Wuxin Copper, helping eliminate oxygen supply bottlenecks and improve oxygen-enriched smelting efficiency. The project significantly reduced oxygen production costs, enhanced automation capabilities, and supported the customer’s capacity expansion and green metallurgy upgrade.
Blast Furnace Oxygen Enrichment PSA Project
PKU Pioneer successfully commissioned a second-phase 14,000 Nm³/h PSA oxygen plant for Chifeng Yuanlian Iron & Steel, expanding total oxygen generation capacity to 28,000 Nm³/h. The project significantly reduced oxygen production costs, improved operational flexibility, and supported the steel mill’s energy-saving and low-carbon transformation goals.
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