CEMS for Power Plants

This continuous emission monitoring system (CEMS) is configured for heat and power generation, covering boilers and combustion turbines above 10 MWe firing liquid, solid or gas fuel. It measures sulphur dioxide (SO2), nitrogen dioxide (NO2), carbon monoxide (CO) and total particulate matter at the stack. Depending on the source, the system combines extractive gas analysers fed through a sampling probe and heated line, in-situ gas analysers mounted on the stack, and an in-situ particulate analyser. Analyser signals reach a CEMS data interface system (DIS) computer over 4–20 mA lines, and the data is passed on to the DOE/EPA server over TCP/IP.

Features

• Extractive gas analysers, in-situ gas analysers and in-situ particulate analysers
• Measures SO2, NO2, CO and total PM/dust
• Sampling probe and heated sample line for extractive measurement
• Triboelectric and double-pass in-situ dust measurement
• Data acquisition system (DAS) and data interface system (DIS)
• Data link to the DOE/EPA server over TCP/IP

How it works

• SO2: NDIR, NDUV, GFC, FTIR, PAS or fluorescence (extractive); DOAS, GFC or FTIR (in-situ)
• NO2: NDUV, PAS or fluorescence (extractive); DOAS (in-situ)
• CO: NDIR, GFC, FTIR or PAS (extractive); DOAS, GFC, FTIR or TDL (in-situ)
• Total PM/dust: light scatter or beta absorption (extractive); transmissometry, triboelectric, double pass or single pass (in-situ)

Emission limit values

• Boilers > 10 MWe, liquid and solid fuel: SO2 500, NO2 500, CO 200, total PM 50 mg/m³
• Boilers > 10 MWe, gas fuel: NO2 350, CO 50 mg/m³
• Combustion turbines > 10 MWe, gas fuel: NO2 150, CO 100 mg/m³
• Combustion turbines > 10 MWe, liquid fuel: NO2 200, CO 100 mg/m³

Applications

• Power plant boilers above 10 MWe
• Gas- and liquid-fuelled combustion turbines above 10 MWe
• Heat and power generation stacks

LKS supplies CEMS for power plants in Malaysia, with installation, calibration and after-sales support. Contact our engineers for system design and a quotation.