In today's increasingly strict environmental requirements, the online analysis system for flue gas, as a key equipment for industrial pollution source monitoring, directly determines the accuracy and efficiency of environmental monitoring due to its technical characteristics. Wuhan Shengnuo Instrument Technology Co., LtdLAS - ExTaking the explosion-proof laser smoke online analysis system as an example, this system has achieved multiple breakthrough functions through technological innovation and has become an industry leaderInternal benchmarkProduct.

1、 Spectral multi wavelength scanning technology for anti-interference measurement

LAS - ExThe system adopts tunable semiconductor laser absorption spectroscopy（TDLAS）Technology involves scanning gas absorption spectra of specific wavelengths for concentration analysis. Its core advantage lies in the spectral multi wavelength scanning function, which can effectively eliminate background gas cross interference. For example, in the chemical industry, when monitoring containsSO₂TheNOxTheCOWhen dealing with multi-component flue gas, the system can accurately distinguish the absorption peaks of each gas, avoiding measurement errors caused by overlapping spectral lines. Combined with digital lock-in amplifier technology, the system can still maintain stability under complex operating conditions±1%FSThe measurement accuracy meets the requirements of ultra-low emission monitoring.

2、 Long path detection pool ensures high-precision measurement

The system is equipped with a reliable long path detection pool design, and the path length can be adjusted according to on-site requirements10-50Adjust within a range of meters. This design enhances gas absorption signals by extending the optical path, significantly improving detection sensitivity. Taking hydrogen sulfide detection in natural gas pipelines as an example, the system can0-100ppmRealize within the range≤1%FSThe resolution can provide timely warning even in the face of trace leaks. The long optical path structure reduces the requirement for sample gas flow rate,2-3L/minThe sampling flow rate can achieve accurate measurement, effectively reducing the energy consumption of the sample gas processing system.

3、 Non contact measurement extends equipment lifespan

The system adopts the principle of non-contact measurement, and the laser emitting and receiving units are isolated from the smoke environment, avoiding the performance degradation of traditional electrochemical sensors caused by contact with corrosive gases. This design extends the service life of the equipment to10Year, significantly lower than the industry average5-8Annual maintenance cycle. In the high-temperature flue gas monitoring of the steel metallurgy industry, the system can stably withstand800℃Sample gas temperature, in conjunction with positive pressure explosion-proof cabinet designExdⅡCT6Realize intrinsic safety operation under explosion-proof level.

4、 Quick response and intelligent warning function

System response time≤10In seconds, it can immediately trigger a three-level alarm mechanism when the concentration of pollutants suddenly increases: sound and light alarm for concentration exceeding the limit, relay output control device linkage, and laser temperature abnormal warning. In the application case of the waste incineration plant, this function successfully captured the peak emission of dioxin precursors, which bought valuable emergency response time for the operator. The supporting data analysis software supports historical data tracing and trend prediction, helping enterprises adjust production processes in advance.

5、 Modular design reduces operation and maintenance costs

The system adoptsIP65Integrated cabinet design with protection level and integrated digital output（RS232/485）Analog output（4-20mA）And the power management module. This modular structure reduces on-site installation time to4Within hours, only independent functional modules need to be replaced during maintenance. Application data in the cement industry shows that the annual operation and maintenance cost of the system is higher than traditional methodsCEMSEquipment reduction37%This is mainly due to the non consumable design (such as chemical reagents) and remote diagnostic function.

LAS - ExThe technological breakthrough of the system is not only reflected in core indicators such as measurement accuracy and response speed, but also redefines the cost-effectiveness standard of industrial flue gas monitoring equipment through innovations such as explosion-proof design, long-life components, and intelligent operation and maintenance. with'carbon peaking and carbon neutrality'With the advancement of goals, such high-performance analysis systems will play a greater role in areas such as ultra-low emission transformation and carbon trading market monitoring.