A system for monitoring harmful gases in an incinerator

Abstract

The present application belongs to waste incineration disposal technical field, especially to a kind of harmful gas monitoring system in incineration chamber, including incineration chamber, transmission channel, processing equipment and control system, ammonia and methane first from incineration chamber to transmission channel, when ammonia and methane concentration is high, in turn pass through flow layer, first filter layer, biological scrubber, second filter layer, catalytic oxidation reactor, third filter layer, dehumidifier and detector, and gas is treated by backflow, concentration is low, and any selection flow layer, gas inlet, first filter layer, biological scrubber, second filter layer, catalytic oxidation reactor, third filter layer, dehumidifier and detector, when waste gas reaches emission standard, waste gas is discharged from exhaust port, does not reach emission standard, and waste gas re-enters activity channel and is treated secondly, until up to standard;Compared with prior art, according to gas concentration and component, the present application flexibly adjusts processing path and reduces energy consumption.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste incineration disposal, more particularly, it relates to a harmful gas monitoring system in an incineration chamber. BACKGROUND

[0002] In the process of incinerating coal and waste containing nitrogen elements, the main reactions are pyrolysis reaction and oxidation reaction. The pyrolysis reaction produces some nitrogen-containing compounds, which are further converted into ammonia gas in the oxidation reaction. When organic matter-containing waste is burned, methane is produced in the anaerobic fermentation process before incineration, and methane continues to be produced in the ash after incineration,

[0003] Ammonia and methane pose a serious threat to the environment and human health.

[0004] For example, a method and system for treating ammonia and methane-containing waste gas disclosed in the authorized announcement No. CN110605016 B include passing the ammonia and methane-containing waste gas into a first biological trickling filter tower, while spraying nutrient solution onto the filler thereof to remove ammonia gas in the waste gas, obtaining treated gas and first leaching solution; passing the treated gas into a second biological trickling filter tower, while spraying the first leaching solution with the nutrient solution onto the filler of the second biological trickling filter tower to perform methane oxidation and denitrification treatment, obtaining purified waste gas and second leaching solution, and spraying the second leaching solution with the nutrient solution onto the filler of the first biological trickling filter tower; wherein the filler of the second biological trickling filter tower is loaded with methane-oxidizing bacteria and aerobic denitrifying bacteria.

[0005] In the above, the traditional treatment system usually adopts a fixed treatment process, and the gas passes through the first biological trickling filter tower and the second biological trickling filter tower in turn. This fixed process treatment method lacks flexibility and cannot be dynamically adjusted according to the concentration and composition of the gas, resulting in low treatment efficiency and energy waste. When the gas concentration is low, the gas still needs to pass through all the treatment units, causing unnecessary energy consumption. SUMMARY

[0006] In view of the deficiencies in the prior art, the purpose of the present application is to provide a harmful gas monitoring system in an incineration chamber which can flexibly adjust the treatment path according to the concentration and composition of the gas and reduce energy consumption.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0008] A harmful gas monitoring system in an incineration chamber, comprising an incineration chamber, a transmission channel, a treatment device and a control system,

[0009] The incineration chamber is used for incinerating waste and producing waste gas containing ammonia and methane;

[0010] The transmission channel is used for transmitting the waste gas from the incineration chamber to the treatment device;

[0011] The processing device comprises a flow layer, a first filter layer, a biological scrubber, a second filter layer, a catalytic oxidation reactor, a third filter layer, a dehumidifier, a detector and a storage area for gas storage,

[0012] The storage area is arranged between the flow layer, the first filter layer, the biological scrubber, the second filter layer, the catalytic oxidation reactor, the third filter layer, the dehumidifier and the detector,

[0013] The flow layer, the first filter layer, the biological scrubber, the second filter layer, the catalytic oxidation reactor, the third filter layer, the dehumidifier and the detector are arranged around the center point of the storage area as a reference point,

[0014] The first filter layer is arranged between the flow layer and the biological scrubber, the second filter layer is arranged between the biological scrubber and the catalytic oxidation reactor, the third filter layer is arranged between the catalytic oxidation reactor and the dehumidifier, and the detector is arranged between the flow layer and the dehumidifier,

[0015] The flow layer, the first filter layer, the biological scrubber, the second filter layer, the catalytic oxidation reactor, the third filter layer, the dehumidifier and the detector are provided with a movable channel for gas flow between the storage area,

[0016] The transmission channel, the flow layer, the first filter layer, the biological scrubber, the second filter layer, the catalytic oxidation reactor, the third filter layer, the dehumidifier and the detector are connected through the first valve,

[0017] Fans, air pumps and concentration sensors are installed on the transmission channel, the flow layer, the first filter layer, the biological scrubber, the second filter layer, the catalytic oxidation reactor, the third filter layer, the dehumidifier, the detector, the storage area and the movable channel,

[0018] Air inlet valves and air outlet valves are installed on the flow layer, the first filter layer, the biological scrubber, the second filter layer, the catalytic oxidation reactor, the third filter layer, the dehumidifier, the detector and the storage area, so as to adjust the processing path according to the concentration of waste gas;

[0019] The control system comprises a sensing controller and a gas quality detection sensor, and the sensing controller is electrically connected with the first valve, the fan, the air pump, the concentration sensor, the air inlet valve, the air outlet valve and the gas quality detection sensor, and the gas quality detection sensor is arranged in the detector.

[0020] The detector is further provided with an exhaust port, and the exhaust port is provided with a second valve, and the second valve is electrically connected with the sensing controller.

[0021] The application is further provided with a control panel connected with the incineration chamber, the control panel comprising a support plate connected with the incineration chamber and a display screen arranged on the support plate, the display screen being electrically connected with the inductive controller.

[0022] The application is further provided with indicator lights arranged on the transmission channel, the flow-through layer, the first filter layer, the biological scrubber, the second filter layer, the catalytic oxidation reactor, the third filter layer, the dehumidifier, the detector, the storage area and the movable channel, the indicator lights being electrically connected with the inductive controller.

[0023] The application is further provided with a first filter screen arranged on the first filter layer, a second filter screen arranged on the second filter layer and a third filter screen arranged on the third filter layer, the pore size of the first filter screen being larger than that of the second filter screen, and the pore size of the second filter screen being larger than that of the third filter screen.

[0024] The application is further provided with a first opening and a second opening arranged on the storage area, the first opening being arranged opposite to the flow-through layer, and the second opening being arranged opposite to the first filter layer, an air inlet valve arranged on the storage area being arranged at the first opening, and an air outlet valve arranged on the storage area being arranged at the second opening.

[0025] By adopting the above technical scheme, the application has the following beneficial effects:

[0026] Through the inductive controller, the concentration inductor selects the treatment path for the ammonia gas and the methane according to the concentration of the ammonia gas and the methane. The ammonia gas and the methane are first introduced into the transmission channel from the incineration chamber. When the concentration of the ammonia gas and the methane is high, the ammonia gas and the methane are sequentially treated by the flow-through layer, the first filter layer, the biological scrubber, the second filter layer, the catalytic oxidation reactor, the third filter layer, the dehumidifier and the detector,

[0027] When the concentration of the ammonia gas and the methane is low, the ammonia gas and the methane are introduced into the movable channel from the flow-through layer. The ammonia gas and the methane flow through the movable channel, and are treated by the inductive controller,

[0028] The ammonia gas and the methane are treated by the flow-through layer, the air guide, the first filter layer, the biological scrubber, the second filter layer, the catalytic oxidation reactor, the third filter layer and the dehumidifier,

[0029] The treated ammonia gas and methane are returned to the detector. According to the gas quality detection sensor, when the exhaust gas reaches the emission standard, the exhaust gas is discharged from the air outlet. When the exhaust gas does not reach the emission standard, the exhaust gas is re-introduced into the movable channel for secondary treatment until the standard is reached. The treatment path is flexibly adjusted according to the gas concentration and composition, and the energy consumption is reduced. Due to the installation of the storage area, when the ammonia gas and the methane are excessive, a part of the ammonia gas and the methane can be treated, and the other part of the ammonia gas and the methane can be stored in the storage area. When the first part of the ammonia gas and the methane is treated, the ammonia gas and the methane stored in the storage area can be introduced into the movable channel and treated. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention.

[0031] 1. Incineration chamber; 2. Transfer channel; 3. Flow layer; 4. First filter layer; 5. Biological scrubber; 6. Second filter layer; 7. Catalytic oxidation reactor; 8. Third filter layer; 9. Dehumidifier; 10. Detector; 11. Activity channel; 12. Storage area; 13. First valve; 14. Fan; 15. Exhaust fan; 16. Concentration sensor; 17. Inlet valve; 18. Outlet valve; 19. Gas quality detection sensor; 20. Second valve; 21. Support plate; 22. Display screen; 23. Sensor controller; 24. Indicator light. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0034] like Figure 1 As shown, the incineration chamber hazardous gas monitoring system includes an incineration chamber 1, a transmission channel 2, a treatment device, and a control system. In the incineration chamber 1, coal and nitrogen-containing materials are burned, generating waste gas containing ammonia and methane. The waste gas is transferred from the incineration chamber 1 to the transmission channel 2, then to the treatment device for treatment, and finally discharged after treatment.

[0035] The incineration chamber 1 is connected to a control panel. The control panel includes a support plate 21 fixed to the outer wall of the incineration chamber 1 and a display screen 22 on the support plate 21. The control system includes an induction controller 23 and a gas quality detection sensor 19. The induction controller 23 is electrically connected to the gas quality detection sensor 19 and the display screen 22. The data of the exhaust gas can be displayed on the display screen 22 through the induction controller 23.

[0036] The processing device comprises a flow layer 3, a first filter layer 4, a biological scrubber 5, a second filter layer 6, a catalytic oxidation reactor 7, a third filter layer 8, a dehumidifier 9, a detector 10 and a storage area 12, the storage area 12 is arranged between the flow layer 3, the first filter layer 4, the biological scrubber 5, the second filter layer 6, the catalytic oxidation reactor 7, the third filter layer 8, the dehumidifier 9 and the detector 10,

[0037] The flow layer 3, the first filter layer 4, the biological scrubber 5, the second filter layer 6, the catalytic oxidation reactor 7, the third filter layer 8, the dehumidifier 9 and the detector 10 are arranged around the center point of the storage area 12 as the reference point,

[0038] The flow layer 3, the first filter layer 4, the biological scrubber 5, the second filter layer 6, the catalytic oxidation reactor 7, the third filter layer 8, the dehumidifier 9 and the detector 10 are arranged in a ring shape,

[0039] The transmission channel 2, the flow layer 3, the first filter layer 4, the biological scrubber 5, the second filter layer 6, the catalytic oxidation reactor 7, the third filter layer 8, the dehumidifier 9 and the detector 10 are connected through the first valve 13,

[0040] The opening and closing of the first valve 13 can be controlled through the induction controller 23, so that the exhaust gas can be sequentially sent from the transmission channel 2, the flow layer 3, the first filter layer 4, the biological scrubber 5, the second filter layer 6, the catalytic oxidation reactor 7, the third filter layer 8 and the dehumidifier 9 to the detector 10,

[0041] The first flow path of the exhaust gas is that the exhaust gas is sent from the incineration chamber 1 to the flow layer 3 through the transmission channel 2, and then sequentially passes through the first filter layer 4, the biological scrubber 5, the second filter layer 6, the catalytic oxidation reactor 7, the third filter layer 8 and the dehumidifier 9, and finally enters the detector 10.

[0042] The flow layer 3, the first filter layer 4, the biological scrubber 5, the second filter layer 6, the catalytic oxidation reactor 7, the third filter layer 8, the dehumidifier 9 and the detector 10 are connected through the first valve 13,

[0043] The second flow path of the exhaust gas is formed from the incineration chamber 1 to the flow layer 3 through the transmission channel 2, and then into the movable channel 11. The inductance controller 23 is used to select to open the flow layer 3, the first filter layer 4, the biological scrubber 5, the second filter layer 6, the catalytic oxidation reactor 7, the third filter layer 8, and the dehumidifier 9. The exhaust gas enters the inside and is treated, and then returns to the movable channel 11.

[0044] The flow layer 3, the first filter layer 4, the biological scrubber 5, the second filter layer 6, the catalytic oxidation reactor 7, the third filter layer 8, and the dehumidifier 9 are selected to be opened again. The exhaust gas is treated again, and then returns to the movable channel 11. In this way, the treated exhaust gas enters the detector 10.

[0045] The transmission channel 2, the flow layer 3, the first filter layer 4, the biological scrubber 5, the second filter layer 6, the catalytic oxidation reactor 7, the third filter layer 8, the dehumidifier 9, the detector 10, the storage area 12, and the movable channel 11 are provided with fans 14, air pumps 15, and concentration sensors 16. The air pump 15 draws the exhaust gas from the previous treatment area. The fan 14 discharges the treated exhaust gas to the next treatment area. The concentration sensor 16 can accurately measure the concentration of the exhaust gas in the exhaust gas.

[0046] The detector 10 is provided with an exhaust port. The second valve 20 is installed on the exhaust port. The inductance controller 23 can control the opening and closing of the second valve 20. The gas quality detection sensor 19 is in the detector 10. The gas quality detection sensor 19 detects the exhaust gas in the detector 10. When the exhaust gas meets the emission standard, the inductance controller 23 senses that the second valve 20 is opened. The exhaust gas is discharged from the exhaust port to the external atmosphere. This can ensure the smooth discharge of the exhaust gas. When the exhaust gas does not meet the emission standard, the exhaust gas is returned to the movable channel 11 for transmission treatment.

[0047] The transmission channel 2, the flow layer 3, the first filter layer 4, the biological scrubber 5, the second filter layer 6, the catalytic oxidation reactor 7, the third filter layer 8, the dehumidifier 9, the detector 10, the storage area 12, and the movable channel 11 are provided with indicator lights 24. The inductance controller 23 can control the opening and closing of the indicator light 24. The indicator light 24 is turned on when the exhaust gas passes through. The indicator light 24 is turned off when the exhaust gas passes through.

[0048] The first filter layer 4 removes large particulate impurities in ammonia and methane. The first filter screen coarsely filters ammonia and methane, achieving the first filtration. The biological scrubber 5 uses microorganisms to degrade and convert organic matter in ammonia and methane, removing ammonia and methane. The second filter screen on the second filter layer 6 is used to remove particulate matter and suspended matter in ammonia and methane, preventing them from entering the subsequent process and causing blockage or damage, achieving the second filtration.

[0049] The catalytic oxidation reactor 7 uses a catalyst to oxidize and decompose organic matter in the exhaust gas, converting it into harmless substances. The third filter screen on the third filter layer 8 further removes fine particulate matter and organic matter residues from the exhaust gas, ensuring the cleanliness of the exhaust gas and achieving a third filtration. The dehumidifier 9 is used to remove moisture from the exhaust gas, preventing it from affecting the effectiveness and stability of subsequent processing units. This results in a three-stage filtration process, from coarse filtration to washing filtration.

[0050] The storage area 12 is provided with a first opening and a second opening. The first opening is opposite the flow layer 3, and the second opening is opposite the first filter layer 4. The inlet valve 17 on the storage area 12 is located at the first opening, and the outlet valve 18 on the storage area 12 is located at the second opening. When there is too much exhaust gas in the flow layer 3, the outlet valve 18 on the flow layer 3 is opened by the induction controller 23, and the exhaust gas is introduced into the movable channel 11 and finally stored in the storage area 12.

[0051] Working principle: The exhaust gas from the incineration chamber 1 is drawn into the transmission channel 2 by the air pump 15 in the transmission channel 2. The concentration sensor 16 senses the concentration of the exhaust gas at this time,

[0052] When the concentration of the exhaust gas is high, 1. The fan 14 in the transmission channel 2, the first valve 13 between the transmission channel 2 and the flow layer 3, and the air pump 15 in the transmission layer are opened by the induction controller 23, and the exhaust gas is circulated into the flow layer 3;

[0053] 2. The fan 14 on the flow layer 3, the first valve 13 between the first filter layer 4 and the flow layer 3, and the air pump 15 in the first filter layer 4 are opened by the induction controller 23, and the exhaust gas is circulated into the first filter layer 4 for the first filtration treatment;

[0054] 3. The fan 14 on the first filter layer 4, the first valve 13 between the first filter layer 4 and the biological scrubber 5, and the air pump 15 in the biological scrubber 5 are opened by the induction controller 23, and the exhaust gas is circulated into the biological scrubber 5 for the first elimination treatment;

[0055] 4. The fan 14 on the biological scrubber 5, the first valve 13 between the second filter layer 6 and the biological scrubber 5, and the air pump 15 in the second filter layer 6 are opened by the induction controller 23, and the exhaust gas is circulated into the second filter layer 6 for the second filtration treatment;

[0056] 5. The fan 14 on the second filter layer 6, the first valve 13 between the second filter layer 6 and the catalytic oxidation reactor 7, and the air pump 15 in the catalytic oxidation reactor 7 are opened by the induction controller 23, and the exhaust gas is circulated into the catalytic oxidation reactor 7 for the second elimination treatment;

[0057] 6. By the induction controller 23, the fan 14 on the third filter layer 8, the first valve 13 between the third filter layer 8 and the catalytic oxidation reactor 7 and the air extractor 15 in the third filter layer 8 are opened, the exhaust gas flows into the third filter layer 8, and the exhaust gas is filtered for the third time;

[0058] 7. By the induction controller 23, the fan 14 on the third filter layer 8, the first valve 13 between the third filter layer 8 and the dehumidifier 9 and the air extractor 15 in the dehumidifier 9 are opened, the exhaust gas flows into the dehumidifier 9, and the moisture is removed after the elimination treatment;

[0059] 8. By the induction controller 23, the fan 14 on the dehumidifier 9, the first valve 13 between the dehumidifier 9 and the detector 10 and the air extractor 15 in the detector 10 are opened, and the exhaust gas flows into the detector 10.

[0060] When the concentration of the exhaust gas is low, 1. By the induction controller 23, the fan 14 on the transmission channel 2, the first valve 13 between the transmission channel 2 and the flow-through layer 3 and the air extractor 15 in the transmission layer are opened, and the exhaust gas flows into the flow-through layer 3;

[0061] 2. By the induction controller 23, the exhaust valve 18 on the flow-through layer 3 is opened, and the exhaust gas flows into the movable channel 11;

[0062] 3. By the induction controller 23, any one of the inlet valves 17 of the flow-through layer 3, the first filter layer 4, the biological scrubber 5, the second filter layer 6, the catalytic oxidation reactor 7, the third filter layer 8 and the dehumidifier 9 is selected to be opened, the exhaust gas is treated in the inlet, and after the treatment, the exhaust gas is returned to the movable channel 11 through the exhaust valve 18;

[0063] 4. By the induction controller 23, any one of the inlet valves 17 of the flow-through layer 3, the first filter layer 4, the biological scrubber 5, the second filter layer 6, the catalytic oxidation reactor 7, the third filter layer 8 and the dehumidifier 9 is selected to be opened again, the exhaust gas is treated in the inlet, and after the treatment, the exhaust gas is returned to the movable channel 11 through the exhaust valve 18;

[0064] 5. By analogy, the flow-through layer 3, the first filter layer 4, the biological scrubber 5, the second filter layer 6, the catalytic oxidation reactor 7, the third filter layer 8 and the dehumidifier 9 are selected to be opened according to the concentration of the exhaust gas;

[0065] 6. By the induction controller 23, the fan 14 on the movable channel 11, the inlet valve 17 on the detector 10 and the air extractor 15 in the detector 10 are opened, and the exhaust gas flows into the detector 10;

[0066] The exhaust gas in the detector 10 is detected by the gas mass detection sensor 19, and the exhaust gas reaching the standard is discharged from the exhaust port by the second valve 20 opened by the induction controller 23. The exhaust gas not reaching the standard is circulated into the movable channel 11 by the induction controller 23 opening the gas outlet valve 18 on the detector 10, the fan 14 on the detector 10 and the air extractor 15 in the movable channel 11, and is subjected to secondary treatment until reaching the standard, and the treatment path is flexibly adjusted and the energy consumption is reduced according to the gas concentration and composition.

[0067] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. Any common change and replacement within the technical scheme range of the present application should be included in the protection range of the present application.

Claims

1. A hazardous gas monitoring system in an incinerator, characterized in that, it comprises an incinerator (1), a transmission channel (2), a treatment device and a control system, the incinerator (1) is used for incinerating waste and generating waste gas containing ammonia and methane; the transmission channel (2) is used for transmitting the waste gas from the incinerator (1) to the treatment device; the treatment device comprises a flow layer (3), a first filter layer (4), a biological scrubber (5), a second filter layer (6), a catalytic oxidation reactor (7), a third filter layer (8), a dehumidifier (9), a detector (10) and a storage area (12) for storing gas, the storage area (12) is arranged between the flow layer (3), the first filter layer (4), the biological scrubber (5), the second filter layer (6), the catalytic oxidation reactor (7), the third filter layer (8), the dehumidifier (9) and the detector (10), the flow layer (3), the first filter layer (4), the biological scrubber (5), the second filter layer (6), the catalytic oxidation reactor (7), the third filter layer (8), the dehumidifier (9) and the detector (10) are arranged around the center point of the storage area (12), the first filter layer (4) is arranged between the flow layer (3) and the biological scrubber (5), the second filter layer (6) is arranged between the biological scrubber (5) and the catalytic oxidation reactor (7), the third filter layer (8) is arranged between the catalytic oxidation reactor (7) and the dehumidifier (9), and the detector (10) is arranged between the flow layer (3) and the dehumidifier (9), the flow layer (3), the first filter layer (4), the biological scrubber (5), the second filter layer (6), the catalytic oxidation reactor (7), the third filter layer (8), the dehumidifier (9) and the detector (10) are provided with a movable channel (11) for gas flow between them and the storage area (12), the transmission channel (2), the flow layer (3), the first filter layer (4), the biological scrubber (5), the second filter layer (6), the catalytic oxidation reactor (7), the third filter layer (8), the dehumidifier (9) and the detector (10) are connected by a first valve (13), fans (14), air pumps (15) and concentration sensors (16) are installed on the transmission channel (2), the flow layer (3), the first filter layer (4), the biological scrubber (5), the second filter layer (6), the catalytic oxidation reactor (7), the third filter layer (8), the dehumidifier (9), the detector (10), the storage area (12) and the movable channel (11), inlet valves (17) and outlet valves (18) are installed on the flow layer (3), the first filter layer (4), the biological scrubber (5), the second filter layer (6), the catalytic oxidation reactor (7), the third filter layer (8), the dehumidifier (9), the detector (10) and the storage area (12) to adjust the treatment path according to the concentration of the waste gas; The control system comprises a sensing controller (23) and a gas quality detection sensor (19), and the sensing controller (23) is electrically connected with the first valve (13), the fan (14), the air extractor (15), the concentration sensor (16), the air inlet valve (17), the air outlet valve (18) and the gas quality detection sensor (19), and the gas quality detection sensor (19) is arranged in the detector (10).

2. The hazardous gas monitoring system in an incinerator according to claim 1, wherein An exhaust port is arranged in the detector (10), and a second valve (20) is arranged on the exhaust port, and the second valve (20) is electrically connected with the sensing controller (23).

3. The hazardous gas monitoring system in an incinerator according to claim 1, wherein The incineration chamber (1) is externally connected with a control panel, and the control panel comprises a support plate (21) connected with the incineration chamber (1) and a display screen (22) arranged on the support plate (21), and the display screen (22) is electrically connected with the sensing controller (23).

4. The hazardous gas monitoring system in an incinerator according to claim 1, wherein Indicating lamps (24) are arranged on the transmission channel (2), the flow layer (3), the first filter layer (4), the biological scrubber (5), the second filter layer (6), the catalytic oxidation reactor (7), the third filter layer (8), the dehumidifier (9), the detector (10), the storage area (12) and the movable channel (11), and the indicating lamps (24) are electrically connected with the sensing controller (23).

5. The hazardous gas monitoring system in an incinerator according to claim 1, wherein A first filter screen is arranged on the first filter layer (4), a second filter screen is arranged on the second filter layer (6), and a third filter screen is arranged on the third filter layer (8), and the pore size of the first filter screen is larger than that of the second filter screen, and the pore size of the second filter screen is larger than that of the third filter screen.

6. The hazardous gas monitoring system in an incinerator according to claim 1, wherein First and second openings are arranged on the storage area (12), the first opening is arranged opposite to the flow layer (3), the second opening is arranged opposite to the first filter layer (4), the air inlet valve (17) on the storage area (12) is arranged at the first opening, and the air outlet valve (18) on the storage area (12) is arranged at the second opening.

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