Ultra-high molecular weight polyethylene fluorine-lined centrifugal pump: the optimal engineering solution for sodium chlorate transportation

The strong oxidizing property (ORP＞+1000mV) and crystallization tendency of sodium chlorate solution make it a "pumping killer", while the fluorine-lined pump reinforced with ultra-high molecular weight polyethylene (UHMWPE) has achieved a breakthrough performance improvement through material composite innovation.

① Performance leap brought by material composite

1. Anti-wear revolution

1.1 The addition of UHMWPE (molecular weight ≥3 million) increases the wear resistance by 8 times (ASTM D4060 test)

1.2 The ability of the impeller edge to resist particle erosion is 3.2 times that of the ordinary F46 pump (actual measurement under the condition of 15% concentration containing crystal slurry)

2. Temperature-corrosion synergistic resistance

② Comparison of key engineering parameters

1. Life cycle:

1.1 Continuous operation time: 8000h for ordinary fluorine-lined pump vs 25000h for ultra-high molecular fluorine-lined pump

1.2 Overhaul interval extended to 5 years (under sodium chlorate crystallization conditions)

2. Energy efficiency performance:

2.1 Volumetric efficiency > 92%

2.2 Save 15-18% electricity compared to ordinary fluorine-lined pumps

③ Full cost economic verification

1. Initial investment:

40% lower than Hastelloy pumps and 25% higher than ordinary fluorine-lined pumps

2. Comprehensive benefits:

2.1 Spare parts consumption reduced by 60%

2.2 Sudden downtime losses reduced by 92%

Case study: After a company in Jiangxi used this pump type to transport sodium chlorate, the annual maintenance cost of a single line was reduced from 280,000 to 65,000, and the production capacity was increased by 23%. (China Chlor-Alkali Industry Association 2025 Blue Book) This case can be found.