EXPEC CEMS-2000 B FT Fourier Transform Continuous Emission Monitoring System

Overview

The EXPEC CEMS-2000 B FT Fourier Transform Continuous Emission Monitoring System is an industrial-grade, in-situ and extractive hybrid CEMS engineered for long-term, unattended operation in demanding waste-to-energy and solid waste incineration environments. Leveraging high-resolution Fourier Transform Infrared (FTIR) spectroscopy, the system enables simultaneous, real-time quantification of up to 15 gaseous species—including regulated pollutants (SO₂, NO, NO₂, NOₓ, NH₃, HCl, HF), combustion indicators (CO, CO₂, O₂, H₂O), and process parameters (temperature, pressure, velocity)—alongside particulate matter concentration via integrated optical scattering or beta attenuation modules. Unlike dispersive NDIR or electrochemical sensors, FTIR provides inherent multi-component capability without cross-interference calibration drift, delivering trace-level detection limits (sub-ppm range for key analytes) and spectral fingerprinting for identification of unknown volatile compounds. The system complies with EN 15267-3, EN 14181, and Q/ST 001–2022 (Chinese CEMS certification standard), supporting regulatory reporting under China’s GB 18485–2014 (Emission Standard for Pollution Control of Municipal Solid Waste Incineration) and EU IED (Industrial Emissions Directive) requirements.

Key Features

• Patented ROCKSOLID™ interferometer design: Monolithic beam-splitter mount eliminates mirror tilt-induced shear motion, minimizes thermal drift from frictional heating, and ensures mechanical robustness against vibration—critical for 24/7 operation in boiler halls and turbine buildings.
• Full-path heated architecture: Sampling probe, 50 m伴热 (heated) Teflon-lined stainless-steel line, and analysis chamber maintained at ≥180 °C to prevent condensation of acidic vapors (e.g., H₂SO₄, HNO₃) and high-boiling-point organics, thereby eliminating corrosion, clogging, and measurement bias from water vapor interference.
• Integrated auto-calibration suite: Supports full-system zero/span calibration using certified gas standards; includes automated zero-air generation, pressure-regulated span gas injection, and dynamic flow compensation during calibration events.
• Redundant fault protection: Built-in uninterruptible power supply (UPS) interface and hardware-triggered purge sequence activate upon mains failure, isolating the analyzer from residual flue gas and initiating nitrogen purging to preserve optical path integrity.
• High-efficiency filtration & back-pulse cleaning: Dual-stage ceramic filter (≤0.5 µm pore size) with programmable reverse-jet cleaning cycles extends probe maintenance intervals to ≥90 days under typical MSW incinerator dust loading (5–20 g/Nm³).

Sample Compatibility & Compliance

The CEMS-2000 B FT accommodates flue gas streams with temperatures up to 300 °C (post-SCR/FGD), dust loadings ≤50 g/Nm³, and moisture content up to 25% v/v. It meets ISO 14064-3 verification criteria for GHG monitoring and supports audit-ready data records compliant with China’s HJ 75–2017 and HJ 76–2017 technical specifications for CEMS. All firmware and data handling modules are designed for GLP-aligned traceability: each measurement event logs operator ID, calibration history, environmental conditions, and raw interferogram checksums. Optional 21 CFR Part 11-compliant software package available for pharmaceutical or regulated industrial clients requiring electronic signature and audit trail functionality.

Software & Data Management

The embedded EXPEC CEMS Suite v4.2 provides web-based HMI access via secure TLS 1.2 connection. It features configurable alarm thresholds (per-gas, per-parameter), automated report generation (hourly/daily/monthly emission summaries), and native export to XML/CSV formats compatible with national EPA platforms (e.g., China’s National Pollutant Discharge Permit System). Raw spectral data is archived in HDF5 format with metadata tagging (wavenumber resolution: 0.5 cm⁻¹, scan rate: 10 Hz), enabling retrospective reprocessing using updated calibration libraries. Remote diagnostics include live interferogram health monitoring, optical alignment status, and heater current trending—accessible via SNMP traps or Modbus TCP integration into DCS/SCADA systems.

Applications

• Municipal solid waste (MSW) and sewage sludge incineration plants requiring continuous compliance with sub-10 mg/m³ NOₓ and <5 mg/m³ HCl limits.
• Co-incineration facilities processing hazardous waste, where detection of HF, dioxin precursors (e.g., chlorobenzenes), and NH₃ slip from SNCR systems is mandated.
• Marine auxiliary boiler and exhaust scrubber effluent monitoring aboard LNG-powered vessels, meeting IMO MARPOL Annex VI Tier III requirements.
• Coal-fired power plants undergoing ultra-low emission retrofits, particularly for simultaneous SO₂/NOₓ/NH₃ monitoring across SCR and wet FGD units.
• Research applications in thermal decomposition kinetics, where time-resolved FTIR spectra support mechanistic modeling of pollutant formation pathways.

FAQ

What regulatory standards does the CEMS-2000 B FT meet for European deployment?

It fulfills EN 15267-3 (QAL1 certification), EN 14181 (ASTM D6522 equivalent for QA/QC), and supports conformity assessment under the EU Industrial Emissions Directive (2010/75/EU) when paired with approved QA procedures.
Can the system quantify particulate matter without a separate opacity monitor?

Yes—the integrated PM module uses dual-wavelength laser extinction (850 nm and 1064 nm) with Mie scattering correction, providing mass concentration (mg/Nm³) traceable to NIST SRM 1691, eliminating need for redundant opacity transmissometers.
Is field recalibration possible without returning the analyzer to the lab?

Fully supported: On-site calibration uses portable certified gas standards (ISO 6141), with automated wavelength validation via built-in H₂O vapor reference peaks and real-time signal-to-noise ratio (SNR) feedback to confirm optical alignment stability.
How does the system handle high-humidity flue gas without spectral water interference?

Advanced chemometric algorithms (PLS-R with water vapor subtraction library) dynamically model and remove H₂O absorption bands in real time, preserving quantitative accuracy for low-concentration analytes even at >20% relative humidity.
What cybersecurity protocols are implemented for remote data transmission?

All network interfaces enforce TLS 1.2+ encryption, role-based access control (RBAC), and mandatory certificate pinning; firmware updates require signed packages verified via ECDSA-256 digital signatures prior to installation.