الصفحة الرئيسية
Oxygen Measurement in Petrochemical Feedstocks & Pure Gases

Oxygen Measurement in Petrochemical Feedstocks & Pure Gases

Trace O2 Quality Control for Monomer Feedstocks & Ultra-High-Purity Gas Supply — OMD-625

Petrochemical feedstocks such as ethylene and propylene, along with the pure gases used to purge and support polymerization processes, must meet very tight oxygen specifications. Trace oxygen contamination can poison sensitive catalysts, degrade polymer quality, or create hazardous conditions where pyrophoric materials are present.

The OMD-625 trace oxygen analyzer gives petrochemical producers a dependable quality control checkpoint on incoming feedstocks and purge gas supply, confirming purity before the gas reaches sensitive process equipment.

  • UHP Gas Purity
  • Feedstock Quality Control
  • Catalyst Protection
  • Process Reliability

Why Trace Oxygen Quality Control Matters

In polymerization and other catalytic petrochemical processes, even low-ppm levels of oxygen can poison catalysts, leading to reduced yields, off-spec product, and costly catalyst replacement. Verifying oxygen content in incoming feedstock and purge gas supply before it reaches the reactor is a standard quality control step that protects both product quality and process reliability.

Where It's Used

  • Feedstock gas receipt QC — verifying incoming ethylene/propylene purity
  • Polymer-grade monomer verification — confirming feed meets catalyst tolerance limits
  • Purge gas quality checks — validating nitrogen or other inert purge supply
  • UHP gas supply monitoring — ongoing verification of ultra-high-purity gas systems

Recommended Analyzer

أومد-625
OMD-625 Trace Oxygen Process Analyzer

The OMD-625 delivers stable, low-drift trace oxygen measurement suited to quality control checkpoints on feedstock and pure gas supply lines.

Installed inline ahead of reactors or storage, the OMD-625 provides continuous confirmation that incoming gas meets the oxygen specification required to protect catalysts and product quality.

  • Continuous Online Output
  • Low-Drift Trace Sensor
  • 4-20 mA / HART Output
  • UHP-Compatible Sampling

المواصفات الرئيسية

  • Range: low-ppm trace oxygen, matched to catalyst tolerance specifications
  • Sensor technology: stable, long-life trace sensor suited to continuous QC duty
  • Sample system compatibility: suitable for UHP-grade sample handling
  • Output: 4-20 mA and HART for DCS integration ahead of reactors
  • Enclosure: process-rated housing for plant installation

الأسئلة الشائعة

Trace oxygen measurement provides a direct indication of oxygen contamination or crossover into the hydrogen stream. Trending the oxygen concentration can help operators identify changes in electrolyser or purification system performance.

A common measurement point is the hydrogen product stream downstream of the electrolyser stack. Additional measurement points may be used before or after drying and purification equipment depending on the process design and monitoring objectives.

Alarm and control limits should be determined based on the electrolyser manufacturer’s specifications, process conditions, applicable standards, and the facility’s safety requirements rather than using a universal oxygen alarm value.

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