CEMS

The Continuous Emission Monitoring System is a high-end environmental protection monitoring equipment developed and produced independently by our principal, which is mainly for the flue gas monitoring at the occasions such as various boilers, industrial kilns and waste incineration. The core products are high quality spectrometer gas analyzer and laser dust detection instrument, of which our principal possesses all the intellectual property rights.

 

CEMS  measure SO2NOx by thermal wet method and measure O2 by zirconia method. CEMS are added by condensation device and COx module.

 

System Features

·         Two-step measurement, higher accuracy and better performance;

·         Full components measurement, all parameters integrated into to a panel

·         Higher accuracy, adopting hot-wet process to avoid SO2 being absorbed by condensed water;

·         Analysis system connected to the measurement cell by optical fiber, easing installation and maintenance;

·         Comparing to conventional condensation method, CEMS has no moving parts, featuring compact configuration and long maintenance interval;

·         Higher reliability and lower ownership, eliminating the use of costly parts such as peristaltic pump, diaphragm pump and condensation system;

·         Gas analysis uses the UV spectroscopy technology, which can deal with the negative effect on measurement from water and dust;

·         Adopt unique filter to reduce dust more effectively and improve the blowback significantly, in turn obtain a longer maintenance interval.

 

Sampling method

Measured components

Design construction

Sampling pump

Measurement principle

Remark

Sampling

SO2,NOx,O2

Cabinet type

Injection pump

Hot-wet process

Need analysis room

Sampling

SO2,NOx; CO,CO2O2

Cabinet type

Vacuum Pump

Hot-wet process + Dry process

Need analysis room

In-situ

Dust

Probe type

No

Laser side scatter measurement

Field installation,

no need of analysis room

In-situ

HCL, NH3, HF

Probe type

No

DLAS

(Diode laser absorption spectroscopy)

Field installation,

no need of analysis room

 

 


CEMS - UV Absorption Spectroscopy Technique

The gas analyzer is specifically designed for stack emission, deNOx and desulphurization systems, motor exhaust and other chemical processes.
 
The measurement principle is based on the UV absorption spectrum of gases in the UV range.
The periodic structure of the absorption bands coming from the different levels of rotational energy of the gas molecules is analyzed by performing a Fourier transform on the absorption spectrum with a high speed DSP (digital signal processor).
 
Following measurements are available for Continuous Emission Monitoring System;

Oxygen (O2)

Nitrogen Oxide (NO)

Nitrogen Dioxide (NO2)

Sulphur Dioxide (SO2)