I. On-site installation drawing

II. System introduction

1. Background: At the request of the environmental protection department, online monitoring of the malodorous gas emitted by the environmental exhaust gas of the whole factory area of the pharmaceutical factory;

2. Environment: exhaust outlet, high temperature, high humidity;

3. Selected product model: TH2000 pretreatment system, MIC-600 fixed composite series;

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

5.Sensors: PID photoion, electrochemistry, electrochemistry respectively

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

Description: Because the on-site exhaust tailing temperature is too high (more than 100 degrees Celsius) and the humidity is too high, the direct measurement of the sensor will affect the service life, so add T H2000 pretreatment system, the built-in pump extracts the exhaust gas to the monitoring system for cooling, and transports it to the MIC-600 gas chamber for harmful factor detection after dehumidification and other operations, and the detected signal is centrally monitored through the 4-20mA signal.

TH2000The pretreatment system is mainly used in the gas analysis industry. The main detection occasions: flue gas discharge, desulfurization and denitrification, boiler exhaust gas, sewage pipeline gas detection and analysis, etc.

The main principle is: the sampling unit collects the flue gas or the measured gas at the site, the pretreatment unit cools, dehumidifies and filters the dust of the gas, and constants the temperature and humidity of the measured gas within a certain range. The gas detection unit detects and analyzes the transportation Gas, the measured gas concentration is displayed on the display screen in real time, and the data signal is transmitted to terminals such as PLC or computer. It can also be transmitted to the cloud server through wireless GPRS or network, and then the user can read the data from the server to realize global network monitoring and analysis. The whole process is automated and does not require human intervention.

TH-2000 gas online monitoring pretreatment system is suitable for gas detection and analysis in low dust, temperature and humidity occasions. If the dust content of the measured gas, an automatic back-blowing system needs to be optional, otherwise the dust filter needs to be cleaned manually. . TH-2000 gas pretreatment system has a built-in compressor water-cooled dehumidification system and 0.5-meter fine dust filtration sampling head (flange installation), sampling distance of 40 meters, automatic cooling, automatic drainage, and tar filtering. For water-soluble gas detection and analysis and outdoor icing environment in winter, to prevent the icing of sampling pipelines, it is necessary to choose the insulation and electric heat constant temperature control system. If you have high requirements for the dryness and cleanliness of the measured gas, please choose the TH-3000 series, including insulation and electricity.The thermostatic control system and the dual-efficiency compressor water-cooled dehumidification system can control the stability of the gas at 4℃ or 5℃

The gas online monitoring and pretreatment system refers to the regulations:

"Therical Power Plant Gas Pollutant Emission Standards GB13223-96

The Law on the Prevention and Control of Atmospheric Pollution of the People's Republic of China will be implemented from September 1, 2000

Continuous Monitoring of Flue Gas in Therm Power Plants Technical Specification for Typical Equipment of the System G-HB97-01

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

"Determination of Particulate matter and Sampling Method of Gaseous Pollutants in Emissions from Fixed Pollution Sources" GB/T16157-1996

Technical Conditions for Flue Gas Samplers" HJ/T47-1999

& Nbsp;

Technical Conditions for Flue Gas Sampler HJ/T48-1999

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

  ;

"Fixed Pollution Source Flue Gas Continuous Monitoring System Requirements and Detection Methods" HJ/T76-2007

Product characteristics of gas online monitoring pretreatment system:

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

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

The standard sampling distance is 30~40 meters, and the remote sampling distance of the optional vacuum pump is more than 70 meters.

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

9-inch display can integrate the display of various probe parameters and control other devices.

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

Optional: no display window or 2.5-inch display, wireless transmission, sound and light alarm, data printing function, linux operating system, touch screen, 16G large-capacity SD memory card, USB flash drive storage.

MIC-600 fixed composite gas detector is used in: 24-hour continuous online monitoring of multiple gas concentrations on site and temperature and humidity measurement, on-site concentration display, over-standard sound and light alarm (optional), remote signal transmission.Real-time display with 2.5-inch high-definition color screen,

adopts gas sensors of internationally famous brands. The main detection principles are: gas sensors with electrochemistry, infrared, catalytic combustion, thermal conductivity, PID light ion and other principles, Swiss high-precision capacitors Digital temperature and humidity sensor. Advanced circuit design, mature kernel algorithm processing,

unique appearance design, and a number of software works and appearance patents have been obtained. MIC-600 is suitable for detecting gas concentrations in pipelines or in confined spaces and atmospheric environments; gas leakage and various background gases with high concentrations of nitrogen or oxygen. There are more than 500 types of testing. The robust and durable explosion-proof shell and fluorocarbon paint surface treatment process are suitable for various dangerous places and corrosive environments, and are wear-resistant.