Gas composition monitoring

Product Description

General Overview

Purpose: To measure the composition of producer gas from gasifiers and combustion processes for quality control, optimization, and safety monitoring.

2. Measurement Specifications

• Measured Components:
  • Carbon Monoxide (CO): 0“50% by volume
  • Carbon Dioxide (CO): 0“50% by volume
  • Hydrogen (H): 0“50% by volume
  • Methane (CH„): 0“10% by volume
  • Oxygen (O): 0“25% by volume
  • Nitrogen (N): Balance (calculated or measured)
  • Moisture (HO): Optional, 0“10%
  • Tar Content: Optional (qualitative or quantitative assessment)
• Detection Limit: Down to 0.1% for major components, ppm-level detection for trace gases.
• Accuracy: ±1% of full scale for critical components.
• Response Time: <10 seconds for 90% response.

3. Operating Conditions

• Gas Temperature: 0“800C (with appropriate sampling system).
• Gas Pressure: 0.1“2.0 bar.
• Ambient Conditions:
  • Operating Temperature: 0“50C.
  • Relative Humidity: ‰85% (non-condensing).

4. Analyzer Technology

• Measurement Principles:
  • Non-dispersive infrared (NDIR) for CO, CO, and CH„.
  • Thermal conductivity detector (TCD) for H.
  • Electrochemical or zirconia sensors for O.
  • Optional tar measurement via gravimetric or online methods.
• Multi-Gas Analysis: Simultaneous measurement of key components.
• Sampling System: Heated probe and lines to prevent condensation.

5. Calibration and Maintenance

• Calibration Gas Requirements: Certified multi-component gas mixtures.
• Auto-Calibration: Optional feature for automatic zero and span checks.
• Maintenance Interval: Monthly sensor checks; annual full calibration recommended.
• Sensor Lifetime: 3“5 years (typical).

6. Communication and Interface

• Display: Touchscreen LCD with real-time composition readout.
• Data Logging: Internal storage with USB or SD card support.
• Outputs:
  • Analog: 4“20 mA, 0“10V.
  • Digital: RS485, Modbus RTU, Ethernet.
  • IoT-Ready: Optional Wi-Fi or GSM connectivity for remote monitoring.

7. Physical and Power Specifications

• Dimensions: Compact design, e.g., 500 x 300 x 200 mm.
• Weight: ‰15 kg.
• Power Supply: 100“240V AC, 50/60 Hz or 24V DC.
• Mounting Options: Rack-mounted, wall-mounted, or portable configurations.

8. Safety Features

• Explosion-Proof Design: Certified for use in hazardous areas (ATEX, IECEx).
• Over-Temperature Protection: Prevents overheating in the sampling system.
• Intrinsically Safe Components: Optional for flammable environments.

9. Applications

• Industries: Biomass and coal gasification, chemical processing, steel production.
• Processes: Gasifier output monitoring, combustion optimization, energy efficiency.
• Additional Uses: Environmental monitoring, safety compliance.

10. Standards and Compliance

• ISO Standards: Compliant with ISO 19739 for syngas analysis.
• Other Standards: ASTM D7651 for fuel gas testing, ATEX/IECEx for hazardous environments.

This specification provides a foundation for selecting or designing a producer gas analyzer. Let me know if you need customization for a specific industry or operational requirements