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Volm Conical Liquid Ring Compressors: Safeguarding Green Chemical Production—AMPS/AMPS-Na Case Study

Under global green chemistry trends, AMPS and AMPS-Na have replaced traditional toxic additives. In one production project, compressing 1,000 Nm³/h acrylonitrile-containing gas to 0.55 MPa(G) demanded extreme safety—acrylonitrile ignites upon heat exposure, releasing toxic fumes. Volm’s HPM Conical Liquid Ring Compressor, using acrylonitrile as working fluid, delivered a breakthrough solution.

Volm Conical Liquid Ring Compressors: Safeguarding Green Chemical Production—AMPS/AMPS-Na Case Study
Different Compressor Comparison

Dimension

Liquid Ring Compressor

Centrifugal Compressor

Reciprocating Compressor

Isothermal

Compression

✅Max. ΔT:10°C

(Prevents gas decomposition)

❌ High ΔT (50~150°C)

(Explosion risk)

❌Moderate ΔT (30~100°C)

(Requires energy-intensive

cooling)

Liquid/Solid

Tolerance

✅ Handles liquids/solids

(Non-metallic, corrosion-proof)

❌Strictly gas-only

(Impeller erosion risk)

❌ Limited solid tolerance

(Valve/piston damage)

Structural

Simplicity

✅ Single moving part

(Oil-free, low maintenance)

❌ High-speed Impeller and

 complex seals/lubrication

❌ Multiple moving parts

(Frequent maintenance)

Safety & 

Eco-Compliance

Oil-free + low-temp design

(Zero contamination)

❌ Oil leakage risk

(Requires enhanced

anti-explosion design)

❌ High lubricant consumption

(Media pollution,

separation required)


Centrifugal/reciprocating compressors proved unsuitable for acrylonitrile gas. Volm’s liquid ring technology excels in safety and adaptability.

HPM Conical Liquid Ring Compressor Advantages

1. High Discharge Pressure

  • Max. discharge: 0.75 MPa(G)(exceeding project’s 0.55 MPa(G) target with 36% margin).

2. Energy Efficiency

  • Radially arranged large-diameter ports reduce flow resistance;

  • Double-acting mechanism: dual suction/compression per rotation → 40% higher efficiency vs. single-acting designs, and self-balanced radial forces.

3. Safety & Reliability

  • Design pressure: 2.5 MPa (well above operating pressure);

  • With a conical distributor structure, inlet pressure fluctuations have minimal impact on the compressor.




Operational Results
MetricResult
Max. Temperature Rise

≤10°C

Acrylonitrile SafetyZero incidents 
O&M Cost Reduction

-30~50% V. Centrifugal/Reciprocating


This case study establishes Volm’s conical liquid ring technology as the benchmark for hazardous gas compression in green chemistry.

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