- Incinerator
- Waste Gas Treatment
- Environmental Monitoring
- Product Details
- Features
Working Principle of CEMS
- Sampling Method: Typically uses direct extraction method – a heated probe extracts flue gas to prevent condensation and component loss.
- Pretreatment: Includes dedusting, dehumidification, and cooling to ensure the sample gas is clean, dry, and suitable for analysis.
- Analysis Techniques:
- SO₂, NOx: UV Differential Optical Absorption Spectroscopy (DOAS) or Non-Dispersive Infrared (NDIR);
- Particulate Matter: Laser backscattering or Beta-ray absorption;
- O₂: Electrochemical or paramagnetic sensors;
- Flow, Temperature, Humidity: Measured by Pitot tube, thermocouple, and humidity sensors respectively.
CEMS Process Flow (System Components)
The CEMS consists of four main subsystems:Stack → Sampling Probe → Pretreatment System → Analyzer → Data Logger → IPC → Environmental Platform
Advantages of CEMS
- High Measurement Accuracy:
- Advanced algorithms (e.g., DOAS + PLS) reduce interference;
- Two-stage condensation and three-stage filtration ensure gas stability.
- High Reliability & Stability:
- Heated sampling lines prevent clogging;
- Core components are corrosion-resistant and interference-proof, suitable for harsh conditions.
- Real-Time Capability:
- Response time <30 seconds;
- Real-time data upload with remote monitoring and early warning functions.
- Modular & Scalable:
- Additional monitoring factors (e.g., CO, HCl) can be added as regulations evolve;
- Compatible with enterprise DCS or environmental agency systems.
Application Areas of CEMS
SO₂, NOx, particulates from coal-fired plants
CO₂, SO₂, dust from sintering, blast furnaces, coke ovens
NOx, particulates from kiln exhaust
Precursors of dioxins, HCl, SO₂, particulates
VOCs, SO₂, NOx, toxic gases
Multi-pollutant co-monitoring
CEMS is a core tool for modern industrial environmental supervision, offering high accuracy, real-time response, and strong stability. It is extensively applied in high-emission sectors such as power, steel, cement, and waste incineration, providing critical data support for carbon accounting, compliance monitoring, and environmental enforcement.
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