HH-6200 Volatile Organic Compounds (VOCs) Online Monitoring System

Product Introduction

Compatible with multiple pre-processing technologies, it can monitor volatile organic compounds (including methane, non methane hydrocarbons, benzene derivatives, etc.) in gases online, and can also expand the monitoring system for other volatile components (such as alcohols, ketones, esters, aldehydes, etc.) according to customer needs. Its components include pre-processing system, chromatography host (FID), hydrogen generator, air purifier, human-computer interaction, etc. According to different monitoring requirements, a system can be composed of online monitoring equipment for temperature and pressure flow, dust, humidity, etc., to meet the monitoring needs of VOCs in many industries such as petrochemicals, pharmaceuticals, automotive manufacturing, furniture manufacturing, semiconductor manufacturing, printing, and spraying.

Instrument principle

The HH-6200 volatile organic compounds (VOCs) online monitoring system consists of a sampling probe, a heat tracing pipeline, a preprocessing unit, a VOCs analyzer, and an electronic control unit. During measurement, it is extracted by a pre sampling pump inside the cabinet, and then passed through the sampling probe, high-temperature heat tracing pipeline, and filter before entering the VOCs analyzer. The entire process is carried out using a 120 ℃ high-temperature heat tracing system. The sample gas is pumped into the analyzer by a sampling pump. When the gas is filled with the quantitative ring, it first passes through atmospheric equilibrium, and the ten way valve inside the analyzer switches. The sample is pushed into the chromatographic column by the carrier gas (N2). Different organic compounds in the sample gas are separated by the chromatographic column and arrive at the FID detector (qualitative) at different times. The higher the responsiveness of the FID detector, the higher the concentration of specific pollutants contained in the sample (quantitative).

Technical Parameter

Typical Graph

Function Description

1. Inert materials are selected for sampling pipelines and flow aid devices to reduce sample adsorption and ensure high data reliability;

2. The system has an automatic blowing function, which can automatically remove dust on the surface of the filter element and extend its service life;

3. The hydrogen generator is equipped with a liquid level detector and pressure sensor, which can automatically replenish water, shut down due to water shortage, and automatically stop gas production when the FID is turned off. The entire system has a FID flame extinguishing alarm function to ensure the safety of the station building;

4. The system interface can directly display the average concentration and hourly emissions of pollutants in the previous hour, with intuitive data for users to refer to;

5. It can be customized according to user needs, taking into account characteristic pollutants while measuring total emissions (non methane hydrocarbons);

6. The analyzer achieves precise use of various gas quantities through precise control. Except for high-purity bottled nitrogen gas used as the carrier gas, all other auxiliary gases use gas generators to achieve low-cost long-term gas production, thereby reducing operation and maintenance costs.