On-line analysis of industrial gas

Based on TDLAS (tunable semiconductor laser absorption spectroscopy) laser gas analysis technology, the monitoring accuracy and types of monitoring gases are much higher than those of traditional infrared analysis technology. The products are widely used in on-line analysis of industrial gases, especially in petrochemical industry, thermal power generation, iron and steel smelting, cement production and so on.

NanoplusThe DFB laser with arbitrary central wavelength between 760 and 3500nm and the QCL laser between 7 and 12 cover the basic vibrational absorption bands of most gas molecules and have strong absorption characteristics, which is a rich wavelength range for gas analysis. Based on TDLAS (tunable semiconductor laser absorption spectroscopy) laser gas analysis technology, the monitoring accuracy and types of monitoring gases are much higher than those of traditional infrared analysis technology. The products are widely used in on-line analysis of industrial gases, especially in petrochemical industry, thermal power generation, iron and steel smelting, cement production and so on.

Petrochemical industry

Gas analysis instruments are most widely used in petrochemical and chemical production plants, such as petrochemical, petrochemical, coal chemical, chemical fertilizer and all kinds of chemical raw materials, there are a large number of on-line gas analysis instruments to monitor and analyze all kinds of process gases. These instruments are based on TDLAS laser gas analysis, including FCC regeneration flue gas analysis (O2, CO and CO2, real-time control of catalyst regeneration reaction efficiency), semi-water gas analysis (O2, CH4, safety monitoring and understanding of gasification reaction), ammonia-carbon ratio analysis (NH3,CO,CO2), etc.

thermal power

At present, the efficiency of most thermal power plants is less than 40%, which is not only low efficiency but also serious pollution, so it is necessary to focus on improving combustion efficiency and controlling emissions. In both processes, process gases need to be monitored, and there are many parts that need to be monitored, such as boiler flue, combustion chamber, air supply device, coal feeding device, chimney mouth and so on. At the same time, there are many kinds of gases that need to be tested. In addition to such special requirements as multi-gas detection, fast real-time accurate detection and multi-point detection, there are also general requirements for gas monitoring equipment for industrial products. for example, in the harsh operating environment (high temperature, high dust, high flow rate, strong corrosion, etc.) operation stability and reliability. These inspection links include: boiler flue (O2, CO2, reflecting coal combustion efficiency), before and after desulphurization / denitrification equipment (SO2, NH3, NOx, reflecting the working condition of desulphurization / denitrification equipment) and so on.

Iron and steel smelting

A large number of gases will be produced in the smelting of iron, steel and other metals. The analysis and measurement of these gases play a very important role in production optimization, energy gas recovery, environmental protection, energy saving and safety control of iron and steel metallurgical enterprises. Based on TDLAS laser gas analysis, without cross interference of background gas, the influence of dust and window pollution is eliminated, and the response speed is fast, so it is the best choice for process gas analysis in iron and steel industry. Typical inspection links include: blast furnace top gas analysis (CO, CO2), converter gas analysis (CO, CO2), converter gas recovery control (CO), coal injection system safety control (CO) and so on.