CN217006564U - Synchronous measurement system for multiple gaseous components by single-point sampling - Google Patents
Synchronous measurement system for multiple gaseous components by single-point sampling Download PDFInfo
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- CN217006564U CN217006564U CN202220498240.9U CN202220498240U CN217006564U CN 217006564 U CN217006564 U CN 217006564U CN 202220498240 U CN202220498240 U CN 202220498240U CN 217006564 U CN217006564 U CN 217006564U
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Abstract
The utility model discloses a synchronous measurement system for multiple gaseous components by single-point sampling, which comprises a high-temperature chamber, and a multi-component measurement device, an oxygen measurement device, an ammonia measurement device and a jet device which are arranged in the high-temperature chamber; the multi-component measuring device comprises a multi-component measuring pool, and a sample inlet pipe, a vacuum meter, an NO dilution probe interface, an NO direct-pumping method measuring interface and a CO measuring interface which are sequentially arranged on the multi-component measuring pool; the oxygen measuring device comprises an oxygen measuring pool, and an oxygen measuring interface is arranged on the oxygen measuring pool; the ammonia gas measuring device comprises an ammonia measuring pool, a spectrum ammonia measuring interface is arranged on the ammonia measuring pool, a connecting pipe is arranged between the ammonia measuring pool and the oxygen measuring pool, and an extraction method ammonia measuring interface is arranged on the connecting pipe; the fluidic device comprises a fluidic ejector. According to the utility model, the flue gas to be measured is introduced through the sample inlet pipe, so that the flue gas sources measured by the component measuring instruments are consistent, the flow rates are the same, the measurement error is effectively reduced, and the measurement and analysis difficulties caused by different flue gas sources are avoided.
Description
Technical Field
The utility model belongs to the technical field of gaseous pollutant measurement, and particularly relates to a synchronous measurement system for multiple gaseous components by single-point sampling.
Background
Along with the improvement of ultra-low emission of flue gas denitration of coal-fired power plants, the denitration efficiency is gradually improved, the ammonia escape is also gradually improved, because the ammonia escape has harmfulness to an air preheater and a tail flue, each power plant has higher requirements on the adjustment of the uniformity of NOx at a denitration outlet, the efficiency control of a coal-fired boiler needs to measure the CO component of the flue gas, along with the development of science and technology, various requirements can be met in the measurement of the CO component of the flue gas, currently, each flue gas component measuring interface is uniformly distributed on the wall of a flue, and the measuring sample gas of each instrument is a non-same source, thereby bringing certain trouble to data analysis; when the types of components needing to be measured are increased, measuring interfaces are arranged on the flue wall, the flue wall needs to be processed and modified, and instruments are complex to install; the flow velocity of the flue gas in the flue is unstable, and the pressure difference of the flue gas passing through each analysis meter is large, so that the detection errors of the analysis meters are caused; flue gas in the flue is not treated, more smoke dust particles exist, each instrument is directly connected with the flue, the work load of the probe filter element is large, and the service life and the effective working time are influenced. Therefore the utility model relates to a multiple gaseous state component synchronous measurement system of single-point sample avoids the flue gas to extract different sample gas in the analytic process, and when flue gas component analysis, sample gas has uniformity, simultaneity, has the significance to denitration flue gas component analysis and boiler steady operation.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a synchronous measurement system for multiple gaseous components by single-point sampling, which aims to solve the problems of non-uniform measurement sources of all components of denitration flue gas, unstable flow rate of flue gas, difficulty in analyzing and processing measurement data and difficulty in arranging interfaces on flue gas duct walls in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme:
a synchronous measurement system for multiple gaseous components by single-point sampling comprises a high-temperature chamber, and a multi-component measurement device, an oxygen measurement device, an ammonia measurement device and a jet device which are arranged in the high-temperature chamber and sequentially communicated from front to back along the gas flow direction;
the multi-component measuring device comprises a multi-component measuring pool, and a sample inlet pipe, a vacuum meter, an NO dilution probe interface, an NO direct-pumping measuring interface, a CO measuring interface and other component measuring interfaces which are arranged on the multi-component measuring pool, wherein the outer end of the sample inlet pipe is connected with the pre-dust-removing device;
the oxygen measuring device comprises an oxygen measuring cell, the oxygen measuring cell is communicated with the multi-component measuring cell, and an oxygen measuring interface is arranged on the oxygen measuring cell;
the ammonia gas measuring device comprises an ammonia measuring tank, wherein a spectrum ammonia measuring interface is arranged on the ammonia measuring tank, the ammonia measuring tank is communicated with an oxygen measuring tank through a connecting pipe, and an extraction-method ammonia measuring interface is arranged on the connecting pipe;
the jet device comprises a jet device, wherein an air inlet of the jet device is connected with an ammonia measuring tank, an air outlet of the jet device is provided with an air outlet pipe, an air jet is provided with a compressed air inlet pipe, and the compressed air inlet pipe is provided with a heater and a pressure stabilizing valve.
The ammonia measuring device further comprises a purging device, wherein the purging device comprises a purging valve, an emptying valve and a shut-off valve, and the purging valve is arranged between the ejector and the ammonia measuring pool; the shutoff valve is arranged on the sample inlet pipe; an emptying pipe is arranged on the sample inlet pipe between the shutoff valve and the multi-component measuring pool, and the emptying valve is arranged on the emptying pipe.
Further, an NO dilution method measuring interface flange is arranged on the inner wall of the high-temperature chamber corresponding to the NO dilution probe interface; the oxygen measuring interface is an oxygen measuring interface flange; the spectrum method ammonia measurement interface is a spectrum method ammonia measurement interface flange.
Further, the NO dilution method measuring interface flange, the oxygen measuring interface flange and the spectrum method ammonia measuring interface flange are all arranged on the inner wall of the high-temperature chamber.
Furthermore, the outer ends of the sample inlet pipe, the air outlet pipe, the compressed air inlet pipe and the emptying pipe extend out of the high-temperature chamber.
Further, the multi-component measuring device, the oxygen measuring device, the ammonia measuring device, the jet device and the purging device are all connected with the PLC control system.
Further, the temperature of the high-temperature chamber is 260-350 ℃.
Further, the pressure in the multi-component measuring pool is-3 to-15 kpa.
Further, the inner diameter of the pipeline of the compressed air inlet pipe and the compressed air outlet pipe is not less than 10 mm.
Further, the temperature resistance of the valve bodies of the purge valve, the emptying valve and the shutoff valve is more than 350 ℃.
The utility model has the following beneficial effects:
1. according to the synchronous measurement system for the multiple gaseous components by single-point sampling, the flue gas to be measured is introduced through the sample inlet pipe, so that the sources of the flue gas measured by the component measurement instruments are consistent, the whole measurement process is carried out in a high-temperature chamber, the flue gas fidelity is realized, the measurement error is reduced, and the difficulty in measurement and analysis caused by different flue gas sources is avoided.
2. The utility model provides a synchronous measurement system for multiple gaseous components by single-point sampling, which realizes the compatibility of two detection methods of an NO dilution method and a direct extraction method by arranging an NO dilution method measurement interface flange and an NO direct extraction method measurement interface, and realizes NH by arranging an extraction method ammonia measurement interface and a spectrum method ammonia measurement interface flange3The extraction method and the laser spectrum extraction method are compatible, and when the detection precision requirement is higher, the two methods can be adopted for NO and NH3And synchronous measurement is carried out, the precision of a detection result is improved, different measurement requirements can be met, and the application scene is wide.
3. The synchronous measurement system for multiple gaseous components by single-point sampling provided by the utility model avoids the arrangement of a plurality of instrument interfaces on the flue wall, is simple and convenient to operate, saves the installation cost, improves the detection efficiency, greatly reduces the workload of each probe filter element because the flue gas contacted by each detection instrument is the flue gas after smoke dust is filtered, and effectively prolongs the service life and the effective working time of each measurement instrument.
4. According to the synchronous measurement system for the multiple gaseous components by single-point sampling, provided by the utility model, compressed air enters the system at a stable flow rate by controlling the pressure stabilizing valve, so that the detection error of an analysis instrument caused by unstable flow rate of flue gas and large pressure difference of the flue gas passing through the analysis instrument is avoided, and the accuracy of a detection result is improved.
Drawings
FIG. 1 is a schematic flow diagram of a system for simultaneous measurement of multiple gaseous components according to the present invention.
In the figure: 1-high temperature chamber, 2-multicomponent measuring device, 2.1-multicomponent measuring cell, 2.2-sample inlet tube, 2.3-vacuum meter, 2.4-NO dilution probe interface, 2.5-NO dilution method measuring interface flange, 2.6-NO direct drawing method measuring interface, 2.7-CO measuring interface, 2.8-other component measuring interface, 3-oxygen measuring device, 3.1-oxygen measuring cell, 3.2-oxygen measuring interface flange, 4-ammonia measuring device, 4.1-ammonia measuring cell, 4.2-connecting tube, 4.3-drawing method ammonia measuring interface, 4.4-spectroscopy ammonia measuring interface flange, 5-fluidic device, 5.1-fluidic device, 5.2-compressed air inlet tube, 5.3-air outlet tube, 5.4-heater, 5.5-pressure stabilizing valve, 6-purging device, 5-jet device, 5.5-jet device, 5-jet device, and the like, 6.1-purge valve, 6.2-evacuation valve, 6.3-shutoff valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in figure 1, the system for synchronously measuring multiple gaseous components by single-point sampling provided by the utility model comprises a high-temperature chamber 1, and a multi-component measuring device 2, an oxygen measuring device 3, an ammonia measuring device 4 and a jet device 5 which are arranged in the high-temperature chamber 1 and sequentially communicated from front to back along the gas flow direction, wherein the measuring system is controlled and regulated by a PLC control system.
The multi-component measuring device 2 comprises a multi-component measuring pool 2.1, a sample inlet pipe 2.2, a vacuum meter 2.3, an NO dilution probe interface 2.4, an NO direct-pumping method measuring interface 2.6, a CO measuring interface 2.7 and other component measuring interfaces 2.8 which are sequentially arranged on the multi-component measuring pool 2.1, wherein the NO dilution probe interface 2.4 is used for connecting an NO dilution probe, an NO dilution method measuring interface flange 2.5 is arranged on the other side of the dilution probe, and the NO dilution method measuring interface flange 2.5 is used for connecting an NO dilution method measuring instrument. The NO direct pumping method measuring interface 2.6 is used for connecting an NO direct pumping method measuring instrument, and the CO measuring interface 2.7 is used for connecting a direct pumping method CO analysis instrument.
The oxygen measuring device 3 comprises an oxygen measuring cell 3.1, the oxygen measuring cell 3.1 is communicated with a multi-component measuring cell 2.1, one end of the oxygen measuring cell is provided with an oxygen measuring interface flange 3.2, the oxygen measuring interface flange 3.2 is used for connecting an oxygen measuring instrument, and the oxygen measuring instrument is preferably a zirconia measuring instrument.
The ammonia gas measuring device 4 comprises an ammonia measuring tank 4.1, the two ends of the ammonia measuring tank 4.1 are respectively provided with a spectrum ammonia measuring interface flange 4.4, the spectrum ammonia measuring interface flange 4.4 is used for connecting a laser spectrum extraction method ammonia measuring instrument, a connecting pipe 4.2 is arranged between the ammonia measuring tank 4.1 and an oxygen measuring tank 3.1, an extraction method ammonia measuring interface 4.3 is arranged on the connecting pipe 4.2, and the extraction method ammonia measuring interface 4.3 is used for connecting an extraction method ammonia measuring instrument.
The jet device 5 comprises a jet device 5.1, an air inlet of the jet device 5.1 is connected with an ammonia measuring tank 4.1, a compressed air inlet pipe 5.2 is arranged at an air jet port, the outer end of the compressed air inlet pipe 5.2 is arranged outside the high-temperature chamber 1, a heater 5.4 and a pressure stabilizing valve 5.5 are arranged on the compressed air inlet pipe 5.2 outside the high-temperature chamber 1 from inside to outside, compressed air enters from the compressed air inlet pipe 5.2, is regulated by the pressure stabilizing valve 5.5 and then enters the jet device 5.1 after being heated by the heater 5.4, an air outlet pipe 5.3 is arranged at an air outlet of the jet device 5.1, and the outer end of the air outlet pipe 5.3 is arranged outside the high-temperature chamber 1.
Flue gas to be detected enters from a sample inlet pipe 2.2, sequentially passes through a multi-component measuring cell 2.1, an oxygen measuring cell 3.1, a connecting pipe 4.2 and an ammonia measuring cell 4.1, and is discharged out of a high-temperature chamber 1 together with compressed air from an air outlet pipe 5.3 of an ejector 5.1, and the flue gas is extracted by various instruments such as an NO dilution method measuring instrument, an NO direct extraction method measuring instrument, a CO analysis instrument, a zirconium oxide measuring instrument, an extraction method ammonia measuring instrument, a laser spectrum extraction method ammonia measuring instrument and the like through an NO dilution method measuring interface flange 2.5, an NO direct extraction method measuring interface 2.6, a CO measuring interface 2.7, an oxygen measuring interface flange 3.2, an extraction method ammonia measuring interface 4.3, a spectrum method ammonia measuring interface flange 4.4 and other component measuring interfaces 2.8 to be detected and analyzed. The compatibility of two detection methods of an NO dilution method and a direct extraction method is realized by arranging an NO dilution method measurement interface flange 2.5 and an NO direct extraction method measurement interface 2.6, and NH is realized by arranging an extraction method ammonia measurement interface 4.3 and a spectrum method ammonia measurement interface flange 4.43The extraction method and the laser spectrum extraction method are compatible, and when the detection precision requirement is higher, the two methods can be adopted for NO and NH3Synchronous measurement is carried out, the precision of a detection result is improved, different measurement requirements can be met, and the method and the device are appliedThe scene is wide. Through predetermineeing measurement interface, reduce the instrumentation installation degree of difficulty, promote detection efficiency.
The system for synchronously measuring multiple gaseous components by single-point sampling further comprises a purging device 6, wherein the purging device 6 comprises a purging valve 6.1, an emptying valve 6.2 and a shut-off valve 6.3, the shut-off valve 6.3 is arranged on a sample inlet pipe 2.2, an emptying pipe is arranged on the sample inlet pipe 2.2 between the shut-off valve 6.3 and the multi-component measuring pool 2.1, the outer end of the emptying pipe is arranged outside the high-temperature chamber 1, and the emptying pipe outside the high-temperature chamber 1 is provided with the emptying valve 6.2; a purge valve 6.1 is arranged between the ejector 5.1 and the ammonia measuring tank 4.1, a shutoff valve 6.3, an exhaust valve 6.2 and the purge valve 6.1 are connected with a PLC control system outside the high-temperature chamber 1, and the opening and closing of the shutoff valve 6.3, the exhaust valve 6.2 and the purge valve 6.1 are controlled by the PLC control system. When the system needs to be purged, the shut-off valve 6.3 is closed, the emptying valve 6.2 is opened, then the purging valve 6.1 is opened, compressed air sequentially passes through the ammonia measuring pool 4.1, the connecting pipe 4.2, the oxygen measuring pool 3.1 and the multi-component measuring pool 2.1, and finally is discharged out of the high-temperature chamber 1 from the emptying pipe, so that purging of the system is realized. When the smoke is detected, the shutoff valve 6.3 is opened, the emptying valve 6.2 and the purging valve 6.1 are closed, the vacuum degree of the multi-component measuring pool 2.1 is stabilized after the pressure of compressed air is regulated by the pressure stabilizing valve 5.5, the compressed air enters the ejector 5.1 through the heater 5.4, and the smoke is extracted and discharged from the air outlet pipe 5.3 of the ejector 5.1.
The temperature of the flue gas received by the sampling pipe 2.2 is higher than 230 ℃ in the transmission process, and the outer end of the sampling pipe 2.2 is connected with a pre-dust removing device to filter the smoke dust particles in the flue gas to be measured.
The shut-off valve 6.3 is a normally open valve, and when the shut-off valve 6.3 is opened, the front and the rear of the valve are in a negative pressure state; when the valve is closed, the pressure of 1Mpa can be borne before and after the valve, and the valve body can resist the temperature of more than 350 ℃.
The emptying valve 6.2 is a normally closed valve, and the valve body can resist the temperature of more than 350 ℃.
The wall thickness of the multi-component measuring cell 2.1 is not less than 2mm, and the pressure in the multi-component measuring cell 2.1 is kept between-3 and-15 kpa in smoke measurement.
The range of the vacuum meter 2.3 is-50 kpa to 1000 kpa.
The NO dilution probe interface 2.4 is adapted to various NO dilution probes, and the NO dilution method measuring interface flange 2.5 is adapted to various NO dilution method measuring instruments; the NO direct pumping method measuring interface 2.6 is adapted to various types of NO direct pumping method measuring instruments; the CO measuring interface 2.7 is adapted to various types of direct extraction CO analysis instruments; the other component measuring interface 2.8 is adapted to various other component measuring instruments; the oxygen measuring interface flange 3.2 is adapted to various types of zirconia measuring instruments, the extraction method ammonia measuring interface 11 is adapted to an extraction method ammonia testing instrument, and the spectrum method ammonia measuring interface flange 4.4 is adapted to various types of laser spectrum extraction method ammonia testing instruments. When measuring the flue gas, each measuring instrument is correspondingly connected with each interface and has no leakage, and the lining substance in the ammonia measuring tank meets the requirements of the ammonia measuring instrument by a laser spectrum extraction method.
The purge valve 6.1 is a normally closed valve, and the valve body can resist the temperature of more than 350 ℃.
The maximum suction flow of the ejector 5.1 is not lower than 100 NL/min.
The maximum heating temperature of the heater 5.4 is not lower than 230 ℃.
The inner diameters of the pipelines of the compressed air inlet pipe 5.2 and the air outlet pipe 5.3 are not less than 10mm, and the flow rate of compressed air entering the compressed air inlet pipe 5.2 is 2 Nm/min.
The pressure stabilizing valve 5.5 has the pressure of 0.7Mpa before the valve and the adjustable pressure interval of 0.1-0.70.7 Mpa after the valve.
The temperature in the high-temperature chamber 1 is set to be 260-350 ℃, the temperature is close to the temperature of the flue gas in the flue, the flue gas is guaranteed to be true, the component detection accuracy is further improved, meanwhile, water vapor condensation is prevented, component blockage, corrosion and failure of an analytical instrument are caused, heat insulation measures are taken for the high-temperature chamber 1 and the external environment, and the temperature of the outer wall of the high-temperature chamber is not higher than 50 ℃.
The sample inlet pipe 2.2, the shut-off valve 6.3 and the purge valve 6.1 are arranged close to the inner wall of the high-temperature chamber 1, the NO dilution method measuring interface flange 2.5, the oxygen measuring interface flange 3.2 and the spectrum method ammonia measuring interface flange 4.4 are arranged on the inner wall of the high-temperature chamber 1, and the NO dilution method measuring instrument, the NO direct extraction method measuring instrument, the CO analysis instrument, the zirconia measuring instrument, the extraction method ammonia measuring instrument, the laser spectrum extraction method ammonia measuring instrument and other instruments are arranged outside the high-temperature chamber 1.
As a preferred mode, each device of the synchronous measurement system for the various gaseous components is preferably made of stainless steel, and the whole temperature resistance is over 350 ℃.
The use method of the synchronous measurement system for the multiple gaseous components by single-point sampling comprises the following steps:
the method comprises the following steps: installing instruments, selecting corresponding NO and NH according to measurement requirements3And (3) a measuring mode is determined, the measuring instruments are connected to corresponding measuring interfaces on the system one by one, then the air tightness of the connection of the instruments is checked, the leakage of flue gas is avoided, the shut-off valve 6.3 is opened through the PLC control system, the emptying valve 6.2 and the purging valve 6.1 are closed, and the zero setting is carried out on the measuring instruments.
Step two: introducing compressed air, adjusting a heater 5.4 to heat the compressed air to above 230 ℃, adjusting a pressure stabilizing valve 5.5 to enable the compressed air to enter an ejector 5.1 at the flow rate of 2 Nm/min, stabilizing the pressure in the multi-component measuring pool 2.1 and keeping the pressure in the multi-component measuring pool between-3 and-15 kpa.
Step three: measuring smoke to be measured, feeding the smoke to be measured from a sample inlet pipe 2.2 under the drive of an ejector 5.1, sequentially passing through a multi-component measuring pool 2.1, an oxygen measuring pool 3.1, a connecting pipe 4.2 and an ammonia measuring pool 4.1, and finally discharging the smoke together with compressed air from an air outlet pipe 5.3 of the ejector 5.1 to the outside of a high-temperature chamber 1, and extracting the smoke by each instrument for smoke component detection and analysis.
Step four: and (3) system purging, namely closing a shut-off valve 6.3 through a PLC control system, opening an exhaust valve 6.2, then opening a purge valve 6.1, sequentially passing compressed air through an ammonia measuring pool 4.1, a connecting pipe 4.2, an oxygen measuring pool 3.1 and a multi-component measuring pool 2.1, and finally discharging the compressed air out of the high-temperature chamber 1 from the exhaust pipe.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.
Claims (10)
1. A synchronous measurement system of multiple gaseous state components of single point sample which characterized in that: comprises a high-temperature chamber (1), and a multi-component measuring device (2), an oxygen measuring device (3), an ammonia measuring device (4) and a jet device (5) which are arranged in the high-temperature chamber (1) and sequentially communicated from front to back along the gas flow direction;
the multi-component measuring device (2) comprises a multi-component measuring pool (2.1), a sample inlet pipe (2.2), a vacuum meter (2.3), an NO dilution probe interface (2.4), an NO direct pumping method measuring interface (2.6), a CO measuring interface (2.7) and other component measuring interfaces (2.8) which are arranged on the multi-component measuring pool (2.1), wherein the outer end of the sample inlet pipe (2.2) is connected with a pre-dedusting device;
the oxygen measuring device (3) comprises an oxygen measuring cell (3.1), the oxygen measuring cell (3.1) is communicated with the multi-component measuring cell (2.1), and an oxygen measuring interface is arranged on the oxygen measuring cell;
the ammonia gas measuring device (4) comprises an ammonia measuring tank (4.1), a spectrum ammonia measuring interface is arranged on the ammonia measuring tank (4.1), the ammonia measuring tank (4.1) is communicated with an oxygen measuring tank (3.1) through a connecting pipe (4.2), and an extraction ammonia measuring interface (4.3) is arranged on the connecting pipe (4.2);
the jet device (5) comprises a jet device (5.1), wherein an air inlet of the jet device (5.1) is connected with an ammonia measuring tank (4.1), an air outlet of the jet device is provided with an air outlet pipe (5.3), an air jet is provided with a compressed air inlet pipe (5.2), and the compressed air inlet pipe (5.2) is provided with a heater (5.4) and a pressure stabilizing valve (5.5).
2. The system of claim 1, wherein the system further comprises: the ammonia measuring device is characterized by further comprising a purging device (6), wherein the purging device comprises a purging valve (6.1), an emptying valve (6.2) and a shut-off valve (6.3), and the purging valve (6.1) is arranged between the ejector (5.1) and the ammonia measuring pool (4.1); the shut-off valve (6.3) is arranged on the sample inlet pipe (2.2); an emptying pipe is arranged on the sampling pipe (2.2) between the shutoff valve (6.3) and the multi-component measuring pool (2.1), and the emptying valve (6.2) is arranged on the emptying pipe.
3. The system of claim 1, wherein the system further comprises: an NO dilution method measuring interface flange (2.5) is arranged on the inner wall of the high-temperature chamber (1) at a position corresponding to the NO dilution probe interface (2.4); the oxygen measuring interface is an oxygen measuring interface flange (3.2); the spectrum ammonia measurement interface is a spectrum ammonia measurement interface flange (4.4).
4. The system of claim 3, wherein the system further comprises: the NO dilution method measurement interface flange (2.5), the oxygen measurement interface flange (3.2) and the spectrum method ammonia measurement interface flange (4.4) are all arranged on the inner wall of the high-temperature chamber (1).
5. The system of claim 2, wherein the system further comprises: the outer ends of the sample inlet pipe (2.2), the air outlet pipe (5.3), the compressed air inlet pipe (5.2) and the emptying pipe extend out of the high-temperature chamber (1).
6. The system of claim 2, wherein the system further comprises: the multi-component measuring device (2), the oxygen measuring device (3), the ammonia measuring device (4), the jet device (5) and the purging device (6) are all connected with the PLC control system.
7. The system of claim 1, wherein the system comprises: the temperature of the high-temperature chamber (1) is 260-350 ℃.
8. The system of claim 1, wherein the system further comprises: the pressure in the multi-component measuring cell (2.1) is-3 to-15 kpa.
9. The system of claim 1, wherein the system further comprises: the inner diameters of the compressed air inlet pipe (5.2) and the compressed air outlet pipe (5.3) are not less than 10 mm.
10. The system of claim 2, wherein the system further comprises: the temperature resistance of the valve bodies of the purge valve (6.1), the emptying valve (6.2) and the shutoff valve (6.3) is more than 350 ℃.
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