The infrared spectrum analysis of Fourier infrared analyzer can be used to study the molecular structure and Chemical bond, and also can be used as a method to characterize and identify chemical species. The infrared spectrum has strong characteristics and can be compared, analyzed, and identified with the infrared spectrum of standard compounds. The reason why these properties of the sample can be tested is because infrared spectroscopy is a method of structural analysis and quantitative qualitative analysis of various compounds that absorb infrared light based on the selective absorption of electromagnetic radiation in the infrared light region by different substances.

It can be used for rapid qualitative and quantitative analysis of gases in sudden environmental air pollution accidents, without on-site sampling and direct analysis. It can be monitored for a long time on site without the need for duty.

PreGASS-6600 portable Fourier infrared gas analyzer is a product independently developed by our company for online monitoring equipment data comparison and acceptance, environmental sampling, and emergency monitoring, targeting environmental protection departments, third-party testing institutions, pollution discharge enterprises, and other units. The product is based on Fourier transform infrared spectroscopy technology, CLS and genetic iterative algorithm, and adopts integrated design, highly integrated, and convenient to use.

Pay attention to more monitoring factors

With the continuous promotion of ultra-low emission policies from pollution sources, the emission concentration requirements for SO2, NO, and NO2 in various industries are becoming increasingly low; At the same time, HCl, HF, NH3 and other low concentration gases need to be analyzed in Incineration flue gas; In addition, the rapid development of "carbon reduction and carbon neutrality" also requires monitoring of greenhouse gases such as CO, CO2, CH4, N2O in pollution sources.

Due to the use of traditional slit and grating techniques, existing optical analysis cannot simultaneously analyze the aforementioned multiple gas components. Fourier transform infrared (FTIR) technology has the maximum luminous flux, faster scanning speed, higher resolution, and signal-to-noise ratio, allowing for both qualitative and quantitative analysis of the aforementioned gases. However, due to the blockade of imported technology from abroad, the prices of related products are high and cannot be applied on a large scale.

Alwaysbrong Co., Ltd. has launched a fully localized technology and low-cost portable FTIR flue gas analyzer PreGASS-6600 specifically for the above needs, completely breaking the monopoly of foreign imported products. PreGASS-6600 has the characteristics of easy portability and fast simultaneous monitoring of multiple components:

The equipment has a high temperature of 180 ℃ throughout the entire process, without any cold spots, effectively avoiding the problems of cross interference between portable electrochemical, ordinary infrared (NDIR), and ultraviolet differential (DOAS) technology tested gases, continuous water interference, and organic matter interference with target detection gases.

In addition, based on the CLS multivariable Chemometrics model algorithm and HITRAN spectrum library, an algorithm module for flue gas emissions from different processes has been developed, and corresponding modeling can be conducted according to the customer's special on-site gas conditions, which ensures the rapid and accurate analysis while completely eliminating interference. The equipment has the characteristics of high precision, high resolution, durability, high signal, low noise, and long component life.

Alwaysbrong has made the following designs for portable FTIR analyzers based on over fifteen years of on-site application experience:

1. Anti vibration interferometer, permanently collimated optical path; Moisture proof ZnSe beam splitter; DTGS sensor;

2. Wavelength range 550-5000cm-1; The resolution is better than 4cm-1;

3. The air chamber adopts aluminum alloy pool body, and the reflector adopts multi-layer gold plating plus Magnesium fluoride anti-corrosion coating, with a light path of 5m;

4. For Incineration, coking, sintering, glass and other special processes, the monitoring algorithm module is customized;

5. Independent heating sampling system to prevent vibration interference of high-temperature air pump; Sampling flow rate 2LPM;

6. The entire process is 180 ℃, without cold spots, avoiding the loss of water-soluble target acidic gas;

7. Engineering plastic shell with insulation and waterproof design; The host weighs 12kg and is portable for use;

8. A sturdy air transport box suitable for on-site monitoring.