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Hydrogen Recovery Technology for Chlor-Alkali Plants
For each ton of caustic soda produced (calculated as 100% NaOH), 278 m³ of by-product hydrogen (calculated as 100% H₂) is simultaneously generated. Adopting a hydrogen purification unit from chlor-alkali tail gas in chlor-alkali plants to recover tail gas from electrolysis workshops and extract high-purity hydrogen is a win-win project for both economic and social benefits.
■ 技术特点Technical Features
· Adopts a new type of dechlorination catalyst developed by Jiarui Gas, which can remove both chloride compounds and chlorine components.· Compared with traditional processes, this process features a shorter flow, lower investment and lower operating costs.
· Long continuous operation period and high degree of automation.
· High purification efficiency with low loss of effective components.
■ Main Performance Indicators
· Feed gas applicable: chlor-alkali tail gas· Unit capacity: 100~20000 Nm³/h
· Operating pressure: atmospheric pressure ~ 3.0 MPaG
· Hydrogen purity: 95% ~ 99.9999% (volume fraction)
· Operating flexibility: 20% ~ 120%
■ Process Flow Diagram
