1. System introduction

Continuous monitoring system for flue gas emissionsA device that continuously monitors the concentration and total emission of gaseous pollutants and particulate matter emitted by air pollution sources and transmits the information to the competent authorities in real time . , industrial furnaces, incinerators, etc.) emission of particulate matter in flue gas, gaseous pollutant concentrations ( mg/m3 ) and emission rates ( kg/h , t/d , t/a ) for continuous and real-time tracking tests .

The company's continuous monitoring system for smoke, dust and flue gas emission adopts advanced ultraviolet differential absorption spectroscopy technology + extraction condensation method. Extraction condensation method CEMS can measure SO2 , NOx , O2 , temperature, pressure, flow rate, dust, humidity and many other parameters. And transmit all monitoring parameters to the user's DCS system, and communicate with the data system of the environmental protection department through the data acquisition instrument. The system equipment is placed in the analysis cabin, which is convenient for operation and maintenance; the whole system has a simple structure, modular design, strong stability and low operating cost.

2. System parameters

Flue gas temperature limit ( minimum / maximum ) : 0-300 (can be customized)

Sampling method: direct extraction

Equipment requirements for vibration: no vibration

Compressed air requirements for the entire system: 0.4Mpa or more, no oil and no water

Maximum air consumption: 2.2m3/h

Average air consumption: 0.45m3/h

Maximum airflow (L/min) : 2

Average airflow (L/min) : 1.5

Dimensions: 800mm × 600mm × 1800mm

Weight: about 150kg

Heat Trace Line Temperature: 120 º C to 200 º C

Probe heat tracing temperature: 120 º C to 200 º C

Protection class: cabinet IP42 , other IP65

Power supply: 220VAC ± 10% , 5000W

Ambient temperature : -20ºC to 50ºC _ _

Ambient humidity: 5%Rh ~ 95%Rh (non-condensing)

External output: 4-20mA , RS232 , RS485

Standard gas: 8L, cylinder

3. Testing items

1 , SO2 , NOX , O2 , temperature, pressure, flow rate (flow), dust, humidity

2. Flue gas sampling method: high temperature heat tracing cold and dry extraction method

3. SO2 , NOX measurement method : UV differential absorption spectroscopy ( DOAS ) analysis technology

O2 Measurement Method: Electrochemical

4. Flue gas temperature measurement method: thermistor (or thermocouple )

5. Flue gas pressure measurement method : pressure sensor

6. Measurement method of flue gas flow rate: differential pressure method ( Pitot tube )

7. Flue gas dust measurement method: laser backscattering method

8. Flue gas humidity measurement method: resistance-capacitance method

4. System Features

1. Based on condensation direct extraction high temperature heat tracing method, advanced ultraviolet differential absorption spectroscopy technology, spectral holographic grating spectroscopy, diode array detection, obtain complete continuous absorption spectrum, high wavelength resolution to ensure low detection limit, small temperature drift, response time Small, no need to add NO2 ↔ NO converter, NO2 can be measured directly, and modules such as CO and CO2 can be expanded flexibly .

2. The degree of automation is high, and the detailed status information of the system can be collected, which can be used as the most favorable resource for data validity audit;

3. Two - stage condensation quickly removes water, cools down, reduces the contact time of air and water, and reduces SO2 loss. The sampling probe uses multi-stage dust filtration technology combined with regular backflushing to effectively solve the problem that the probe is easy to block, adapt to high dust, high Wet, high temperature, highly corrosive and other harsh environments;

4. The gas chamber of the analyzer is made of stainless steel. The gas chamber is strong, low cost, and less affected by moisture and dust. The detector and the gas chamber are connected by optical fibers, which are convenient for replacement and low maintenance cost;

5. Intelligent design , automatic zero adjustment, range overrun alarm, humidity alarm, sampling probe temperature abnormality alarm, condenser temperature abnormality alarm, heating temperature abnormality alarm, fault alarm;

6. The temperature pressure flow detector adopts an integrated cabinet, high-precision differential pressure transmitter (low detection limit), automatic zero adjustment, automatic backflushing, backflushing protection, data upload and display functions;