1、 On site installation diagram

2、 System Introduction

Background: In response to the requirements of the environmental protection department, online monitoring of odorous gases emitted from the environmental exhaust of the entire pharmaceutical factory area is being carried out;

2. Environment: Exhaust emission outlet, high temperature, high humidity;

3. Select product model: TH2000 pre-processing system, MIC-600 fixed composite series;

4. Monitoring factors: organic volatile gases TVOC, hydrogen sulfide H2S, ammonia NH3;

5. Sensors: PID photoionization, electrochemistry, electrochemistry

6. Signal transmission: 4-20mA signal is connected to the DCS system for centralized monitoring;

Explanation: Due to the high temperature (above 100 degrees Celsius) and humidity of the exhaust gas emitted on site, direct measurement by sensors will affect its service life. Therefore, a TH2000 pre-treatment system is installed, with a built-in air pump to extract the exhaust gas to the monitoring system for cooling, dehumidification, and other operations. The exhaust gas is then transported to the MIC-600 chamber for harmful factor detection, and the detected signal is centrally monitored through a 4-20mA signal.

The TH2000 pretreatment system is mainly used in the gas analysis industry, with main detection scenarios including flue gas emissions, desulfurization and denitrification, boiler exhaust gas, and gas detection and analysis of sewage pipelines.

The main principle is that the sampling unit collects smoke or measured gas on site, the preprocessing unit cools, dehumidifies, and filters dust from the gas, and keeps the temperature and humidity of the measured gas constant within a certain range. The gas detection unit detects and analyzes the transported gas, displays the concentration of the measured gas in real time on the display screen, and transmits the data signal to terminals such as PLC or computer. It can also be transmitted to cloud servers through wireless GPRS or network, and users can read the data from the server to achieve global network monitoring and analysis. The entire process is automated and does not require human intervention.

The TH-2000 gas online monitoring and preprocessing system is suitable for gas detection and analysis in low dust, temperature, and humidity environments. If the dust content of the measured gas is high, an automatic blowback system needs to be selected, otherwise the dust filter needs to be manually maintained and cleaned regularly. The TH-2000 gas pretreatment system is equipped with a built-in high-efficiency compressor water-cooled dehumidification system and a 0.5-meter fine dust filtration sampling head (flange installation), with a sampling distance of 40 meters, automatic cooling, automatic drainage, and tar filtration. For the detection and analysis of gases that are easily soluble in water and outdoor icing environments in winter, insulation and electric heating constant temperature control systems should be selected to prevent the sampling pipeline from icing. If you have high requirements for the dryness and cleanliness of the tested gas, please choose the TH-3000 series, which includes insulation and electric tracing constant temperature control system, dual effect compressor water-cooled dehumidification system, and can control the stability of the gas at 4 ℃ or 5 ℃

Gas online monitoring pre-treatment system refers to regulations:

Emission Standards for Air Pollutants from Thermal Power Plants GB13223-96

The Air Pollution Prevention and Control Law of the People's Republic of China came into effect on September 1, 2000

Technical Specification for Typical Equipment of Continuous Monitoring System for Thermal Power Plant Smoke G-HB97-01

Technical Regulations for Continuous Monitoring of Flue Gas Emissions from Thermal Power Plants HJ/T-2000

Determination of particulate matter and sampling methods for gaseous pollutants in fixed source emissions GB/T16157-1996

Technical Conditions for Smoke Samplers HJ/T47-1999

Technical Conditions for Smoke Samplers HJ/T48-1999

Technical Specification for Continuous Monitoring of Flue Gas Emissions from Fixed Pollution Sources HJ/T75-2007

Requirements and Testing Methods for Continuous Monitoring System of Fixed Pollution Source Smoke HJ/T76-2007

Product characteristics of gas online monitoring and pretreatment system:

Optional explosion-proof and waterproof design (standard non explosion-proof, IP66 protection, outdoor type), fast, reliable, and stable detection.

The gas analysis unit can be built into the chassis or external.

The standard sampling distance is 30-40 meters, and the optional vacuum pump has a remote sampling distance of over 70 meters.

The standard pretreatment temperature is 600 ℃, TH2000 can pretreat flue gas at 1300 ℃, and TH3000 can pretreat flue gas at 2000 ℃.

9-inch display screen, capable of integrating various probe parameters and controlling other devices.

Network transmission, 4-20mA input, RS485 input, 4-20mA output, RS485 communication.

Optional: No display window or 2.5-inch display screen, wireless transmission, sound and light alarm, data printing function, Linux operating system, touch screen, 16GB large capacity SD memory card, USB storage.

The MIC-600 fixed composite gas detector is used for 24-hour continuous online monitoring of various gas concentrations on site, as well as temperature and humidity measurement. It can display concentration on site, sound and light alarms for exceeding standards (optional), and remote signal transmission. Using a 2.5-inch high-definition color screen for real-time display,

Adopting international * * brand gas sensors, the main detection principles include gas sensors based on electrochemical, infrared, catalytic combustion, thermal conductivity, PID photoionization, and high-precision capacitive digital temperature and humidity sensors from Switzerland. Advanced circuit design, mature kernel algorithm processing,

The exterior design has obtained multiple software works and appearances. MIC-600 is suitable for detecting gas concentrations in pipelines, confined spaces, and atmospheric environments; Gas leakage and high concentration single gas purity with various background gases such as nitrogen or oxygen. More than 500 types have been tested. The sturdy and durable explosion-proof shell and fluorocarbon paint surface treatment process are suitable for various hazardous locations and highly corrosive environments, and are wear-resistant.