Hydrogen Cyanide (HCN) Removal System

Why Hydrogen Cyanide Removal Is Critical

Hydrogen Cyanide (HCN) is an extremely toxic compound commonly present in chemical, petrochemical, metallurgical and waste-to-energy processes. Even low concentrations require immediate and reliable treatment to protect personnel, comply with environmental regulations and ensure safe plant operation.

Ravebo designs and manufactures engineered wet gas scrubber systems specifically developed for industrial hydrogen cyanide removal from exhaust gas streams.

Engineered HCN Scrubber Solution

Our polypropylene (PP) wet scrubber system removes HCN through alkaline absorption and controlled oxidation. The contaminated gas enters the column tangentially to ensure optimal flow distribution, passing through a high-efficiency packed bed where the scrubbing liquid absorbs and neutralizes hydrogen cyanide.

• Alkaline absorption using NaOH
• Optional oxidation using NaOCl
• High mass transfer packed bed (Pall rings)
• Removal efficiency up to >99% (process dependent)

Safety & Process Monitoring

Due to the hazardous nature of HCN, system reliability and monitoring are essential. Our scrubber systems include advanced instrumentation and alarm systems to ensure continuous safe operation.

• Flow monitoring over packed bed
• Pressure transmitters for nozzle performance control
• PLC-based automation (Siemens S7-1500)
• Alarm system for low flow or abnormal pressure
• Redundancy options available

Integrated Package System

The HCN scrubber is delivered as a complete engineered package system, including:

• Corrosion-resistant polypropylene column
• KSB centrifugal scrubber pumps
• Iwaki dosing pumps
• Endress + Hauser instrumentation
• Rittal cabinet with Siemens PLC
• Centrifugal fan
• ECON valves

Example Design Parameters