The advantages and working methods of the flue gas analyzer

The flue gas analyzer is a device that continuously measures and measures the flue gas content of CO2, CO, NOx, SO2, etc. by using an electrochemical sensor. It is mainly used for small-scale fuel oil, gas boiler pollution discharge or environmental monitoring handheld use near pollution sources.

Advantage

Powerful

It can analyze and detect O2, CO, CO2, NO, NO2, NOx, SO2, CXHY, soot, exhaust temperature, flue pressure, combustion efficiency and excess air coefficient. Optional differential pressure, flow rate. The total amount of emissions, such as H2S, H2, HCL, NH3, HC and other smoke components can be detected by adding sensors.

The flue gas analyzer is equipped with a high-power Peltier gas cooler and a drain peristaltic air pump, and electronically detects the condensed water. Once it reaches the upper limit of drainage, it automatically turns on the peristaltic pump and discharges the condensate, which is very suitable for wet flue gas monitoring and analysis. At the same time, the instrument is equipped with three-stage filtration and particle collection device to effectively filter soot particles.

The flue gas analyzer is equipped with a wireless mobile hand-held device, which operates the instrument within a coverage of about 50 meters. It is very suitable for occasions where the pollution source is serious. The operator remotely controls the operation of the instrument; avoiding operator contamination on site.

Built-in high-power membrane air pump, the ultimate vacuum can reach -60kPa, and the flue negative pressure can still work normally when it is -20kPa.

The flue gas sampling flow rate is 2-3.5 L/min, which ensures that the sensor is in contact with sufficient flue gas and increases the reaction speed. T90 is: O2----15 seconds; CO, NO, NO2, SO2-----20~60 seconds

The gas pump has excellent corrosion resistance. MTBF (mean time between failures) is 20,000 hours.

Easy to operate

Use the OK function key to perform various operations directly. To boot up, just press the "OK" button twice.

With a large LCD display, all measurements are clear at a glance. The dedicated function keys switch the character size for easy viewing of measurement results.

AC and DC, can work continuously for 6 hours on a single charge, very suitable for working in the industrial field.

With self-diagnosis function, it will automatically alarm when there is a fault (such as sensor failure, unreliable plug contact, over-range, etc.) and indicate the location where the fault occurred. Easy to maintain.

When the CO concentration exceeds the range, the gas path is automatically disconnected, and the sensor is flushed with a spare air pump to prolong its service life.

The instrument has 1500 sets of data storage and 1GB MMC memory card, which automatically stores measurement data and generates EXCEL format files. The instrument's built-in high-speed thermal printer prints measurement data at any time.

User-defined storage time, automatic sampling, measurement, storage and printing of measurement data and the average of a given time period.

(High temperature probe, curved probe, multi-hole probe) and length (0.75 m, 1.0 m, 1.5 m, 2.0 m) probes ensure compatibility with different field test environments.

Approved by German TÃœV certification and Chinese measuring instrument type approval (PA 2009-C112).

?principle

The working principle of the flue gas analyzer is commonly used in two ways, one is the electrochemical working principle, and the other is the infrared working principle. At present, the portable flue gas analyzer on the market is usually a combination of these two principles. The electrochemical flue gas analyzer generally has the German Fissau AFRISO, the German MRU\Germany German map, the domestically produced Tianhong\崂应, etc., infrared flue gas. Analyzer manufacturers generally have German MRU, Germany Siemens and so on. The following is an introduction to the working principle of these two flue gas analyzers:

Working principle of electrochemical gas sensor: After the dust to be tested is dedusted and dehumidified, it enters the sensor chamber and enters the electrolytic cell through the permeable membrane, so that the gas diffused and absorbed in the electrolyte is subjected to potential electrolysis at a predetermined oxidation potential. The electrolysis current used was used to determine the concentration of the gas.

A working electrode, a counter electrode and a reference electrode are mounted in a cylindrical body made of plastic, and an electrolyte is filled between the electrodes, and a separator made of porous tetrafluoroethylene is packaged at the top. The connection between the preamplifier and the sensor electrode applies a certain potential between the electrodes to put the sensor in operation. The gas is oxidized or reduced in the working electrode in the electrolyte, and the equilibrium potential of the electrode changes in the reduction or oxidation reaction of the counter electrode, and the change value is proportional to the gas concentration. It can measure SO2, NO, NO2, CO, H2S and other gases, but the sensitivity of these gas sensors is different. The order of sensitivity from high to low is H2S, NO, NO2, SO2, CO, and the response time is usually several seconds to tens. Seconds, generally less than 1min; their life span is only half a year short, 2 years, 3 years, and some CO sensors for several years.

The working principle of the infrared sensor: the gas composition and content analysis are carried out by using the principle that different gases have special absorption characteristics for the electromagnetic wave energy of the infrared wavelength.

Infrared light generally refers to electromagnetic radiation having a wavelength ranging from 0.76 μm to 1000 μm. The infrared wavelength actually used in the infrared gas analysis instrument is about 1~50μm.

Way of working

Direct pumping sampling

Dilution pumping sampling method

Online direct measurement

Product Features

A hand-held flue gas analyzer that measures combustion parameters in flue gas. It has a stylish appearance and advanced detection technology, and is easy to operate.

It can measure air and flue gas temperature, dynamic pressure, static pressure, pressure difference, monitor O 2 and CO, NO, optional CO high concentration, SO 2 , NO x measurement channel. In addition, CO 2 , combustion efficiency, smoke loss and air excess factor can be calculated.

It can monitor the concentration of CO in the surrounding air, which is equivalent to integrating a personal CO detection alarm to protect the user's personal safety.

It is equipped with a cleaning pump with automatic overload protection and a gas preconditioner with anti-vibration function.

Built-in infrared transmitter and data storage, can store 40 external measurement values ​​(also optional high-capacity memory, can store thousands of complete measurements). The measured values ​​can be easily transferred to the computer via the communication interface.

development of

The measurement environment of the flue gas is generally very demanding. It is well known that many sulfur-containing flue gases have a very high temperature and moisture content, and sulfur-containing flue gas is easily dissolved in water vapor, resulting in a small measurement data. In this regard, the flue gas analyzer proposes a complete solution. The portable flue gas analyzer has become an essential equipment for the energy conservation and environmental protection industry. It is specially designed for the needs of environmental protection and industrial fields, and is suitable for accurate monitoring of various smoke components of heavy pollution sources.

In order to implement the Law of the People's Republic of China on Prevention and Control of Atmospheric Pollution, improve the environment and improve air quality, safeguard human health, and standardize the construction of industrial boilers and kiln flue gas desulfurization projects, the State has formulated the industrial boiler and kiln wet flue gas desulfurization project. A series of regulations, such as Technical Specifications, have become the national environmental protection standards, and urged many industrial boiler users to emit sulfur at a level not higher than the specified value.

Handheld detector for O 2 , CO , NO , NO 2 , SO 2 and high CO , optional infrared transmission printer

Application industry

Flue gas analyzer is suitable for all kinds of industrial gas stoves or chimneys; environmental protection industry; engine; boiler monitoring; energy monitoring functional department; metallurgical industry; thermal power industry; building silicate industry;

It is used to determine the combustion parameters in flue gas. It is an ideal equipment for boiler commissioning, optimizing combustion efficiency, saving energy and controlling emissions.

This year's National Twelfth Five-Year Plan for energy-saving key projects, circular economy and resource conservation major demonstration projects and key industrial pollution control projects are used in large quantities. Portable flue gas analyzers, J2KN flue gas analyzers fully comply with national standards GB/T10180 -2003 "Industrial Boiler Thermal Performance Test Procedures" and GB/T15317-2009 "Energy Conservation Monitoring of Coal-fired Industrial Boilers"; this time, the provincial and municipal energy-saving monitoring stations are equipped with these equipment.

n Inner Mongolia energy-saving monitoring capacity building equipment project procurement 71 sets

n Shandong Province Energy Conservation Supervision Agency Capacity Building Equipment Project Procurement 61 sets

n Shanxi Province Energy Conservation Supervision Agency capacity building project equipment procurement 58 sets

n Hunan Province Energy Conservation Supervision Agency Capacity Building Equipment Project Purchase 60 sets

n 71 sets of capacity building equipment projects for Gansu Province Energy Conservation Supervision Agency

Innovative application

1. In the domestic first smoke analyzer, the right exit self-aligned diffraction grating tunable wavelength optical system is used. The product adopts the right exit diffraction grating monochromatic body dedicated to the flue gas analyzer to realize continuous wavelength adjustment, so that the application range of the product reaches the full function level, and can be quickly and conveniently set according to the requirements of the material elements to be tested. Wavelength, can be used for analysis of various elements of various metals, non-metallic materials and their alloys such as steel, copper and aluminum.

2, the necessity of using wavelength continuously adjustable light source

The analysis principle of the flue gas analyzer is a solution containing different elemental components, the compounds of which are of different colors and have selective absorption spectra for different wavelengths of light. Therefore, according to Lambert-Beer's law, the element content is obtained by detecting the absorbance of a specific element solution at a specific wavelength. Different materials, different elements, and different analytical methods require different wavelengths. Therefore, to meet the needs of various industries for detecting and analyzing various elements in different materials, it is necessary to conveniently set different wavelengths. This product meets this need.

At the same time, the right-direction self-aligned diffraction grating tunable wavelength optical system is used, and the curved colorimetric cuvette is developed to greatly reduce the interference of ambient light on the analysis and detection, so that the detection wavelength can be set freely. It is also convenient for users to analyze the design purpose of the operation.

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