Tail gas CO absorption equipment for exhaust system of explosion-proof diesel power device

Abstract

The invention relates to the technical field of explosion-proof diesel engine exhaust systems, in particular to tail gas CO absorption equipment for an explosion-proof diesel power device exhaust system, which comprises a diesel power output assembly and a hot air activation device, and an outer shell is mounted on one side of the diesel power output assembly; and a waste heat recycling mechanism is arranged on the diesel power output assembly. According to the system, waste heat generated during operation of the diesel engine can be fully recycled, the recycled heat can be reutilized, soot particles on the surface of the CO absorption assembly can be effectively eliminated through the hot air activation device, meanwhile, the heat emitted by the diesel engine is recycled and fully utilized, and the heat utilization rate of the diesel engine is improved. The energy required by operation of the hot air activation device is reduced, so that the device is conveniently connected with an exhaust assembly of the diesel engine, CO absorption operation can be fully carried out, heat recovery with the diesel engine is realized, and waste gas exhausted by the diesel engine is fully treated.

Description

Technical Field

[0001] The present invention relates to the technical field of explosion-proof diesel engine exhaust systems, and in particular to tail gas CO absorption equipment used in exhaust systems of explosion-proof diesel power units. Background Art

[0002] As an efficient, flexible, and safe auxiliary tool for coal mine transportation, rubber-tyred trackless vehicles are of great significance in improving coal mine production efficiency, reducing production costs, and promoting coal mine modernization. However, due to the explosion-proof modification of diesel engines, poor road conditions, and improper vehicle maintenance, trackless rubber-tyred vehicles emit large amounts of CO gas during operation, resulting in frequent CO concentration exceeding the limit in the roadway. Existing catalytic oxidation-type CO eliminators can reduce CO emissions from the exhaust gas of trackless rubber-tyred vehicles, but the exhaust gas temperature of trackless rubber-tyred vehicles is low and the amount of carbon soot is large. Carbon soot easily deposits on the catalyst surface, causing the oxidation catalytic converter to deactivate in a short period of time and reducing the CO elimination effect.

[0003] How to effectively recycle and reuse the heat emitted by the diesel engine during operation, use the high-temperature oxygen-rich airflow to quickly burn the deposited soot, and achieve online activation of the oxidation catalytic converter is a difficult problem in this field. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose tail gas CO absorption equipment for the exhaust system of an explosion-proof diesel power unit.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] The exhaust gas CO absorption equipment for the exhaust system of an explosion-proof diesel power unit includes a diesel power output component and a hot air activation device, wherein an outer shell is installed on one side of the diesel power output component;

[0007] The diesel power output assembly is provided with a residual heat recycling mechanism;

[0008] The outer shell consists of an upper exhaust pipe, an expanded diameter pipe and a lower exhaust pipe. A CO absorption component is installed in the expanded diameter pipe. A water inlet pipe and a fresh air inlet are installed on both sides of the upper exhaust pipe. A water outlet pipe and a dirty air outlet are installed on both sides of the lower exhaust pipe.

[0009] The upper end of the expanded tube is penetrated by a plurality of hot air inlets, one end of the fresh air inlet penetrates the upper exhaust pipe and the cooling water channel and extends to the upper end of the CO2 absorption component, and one end of the dirty air outlet penetrates the lower exhaust pipe and the cooling water channel and extends to the lower end of the CO2 absorption component;

[0010] The exhaust pipe of the diesel power output assembly is connected to the fresh air inlet.

[0011] Compared with the existing technology, the present application can fully recover the waste heat during the operation of the diesel engine, and can reuse the recovered heat. The hot air activation device can effectively eliminate the carbon soot particles on the surface of the CO absorption component, and at the same time recover the heat emitted by the diesel engine, and make full use of this heat, reducing the energy required for the operation of the hot air activation device, so that it can be connected to the diesel engine exhaust component, fully carry out CO absorption operations, realize heat recovery from the diesel engine, and fully treat the exhaust gas emitted by the diesel engine.

[0012] Preferably, the waste heat recycling mechanism includes a finned heat absorber installed on the diesel power output assembly, the finned heat absorber is connected to a pump body assembly, one end of the pump body assembly is connected to a guide pipe, one end of the guide pipe is connected to a heat release coil assembly, the heat release coil assembly is fixed on one side of the diesel power output assembly, one end of the heat release coil assembly is connected to a return pipe, the return pipe is arranged through the finned heat absorber, and the return pipe is connected to the pump body assembly.

[0013] Furthermore, the heat generated by the operation of the diesel power unit can be absorbed by the finned heat absorber, and the heat can be transported to the heat release coil assembly through one end of the return pipe, the pump body assembly and the guide pipe. The heat can be generated by the heat release coil assembly, and the temperature around the hot air inlet pipe can be increased to perform a heating operation.

[0014] Preferably, a cooling water channel is provided in the expanded diameter pipe, the upper exhaust pipe and the lower exhaust pipe. The upper and lower ends of the cooling water channel are connected to the water inlet pipe and the water outlet pipe respectively. The cooling water channel is provided between the expanded diameter pipe and the CO2 absorption component.

[0015] The fresh air inlet, the dirty air outlet and the multiple hot air inlets are screwed with nuts.

[0016] Furthermore, it can facilitate connection and fixation, and at the same time can increase the temperature of the CO absorption component, so as to facilitate the CO absorption operation of the gas released by the diesel engine through the CO absorption component.

[0017] Preferably, the hot air activation device includes a high-temperature resistant negative pressure blower, an air heater, and a temperature control system arranged in an outer shell; the high-temperature resistant negative pressure blower is connected to a dirty air exhaust pipe; the dirty air exhaust pipe is connected to a dirty air outlet; the lower end of the air heater is connected to an induced draft fan, and the other end of the air heater is connected to a plurality of hot air inlet pipes, and the plurality of hot air inlet pipes are respectively connected to a plurality of hot air inlets;

[0018] The hot air inlet pipe is arranged through the residual heat recycling mechanism;

[0019] The hot air inlet pipe and the dirty air exhaust pipe are both high-temperature resistant metal hoses; the hot air inlet pipe and the dirty air exhaust pipe are respectively fixedly connected to the hot air inlet and the dirty air outlet through threads.

[0020] Furthermore, gas can be supplied to the air heater through the induced draft fan, and the gas temperature can be quickly increased through the air heater, so that the high-temperature gas can enter the outer shell through the hot air inlet and contact the CO consumption component, so that the CO consumption component can catalyze the reaction with CO at high temperature.

[0021] Preferably, the temperature control system includes two thermocouples, a programmable logic controller, a contactor and a thyristor; the two thermocouples are respectively installed at the air inlet and the air outlet of the air heater; the programmable logic controller, the contactor and the thyristor are connected to the air heater.

[0022] Furthermore, the operation of the air heater can be effectively controlled by the temperature control system, and the gas temperature can be controlled to fully realize high-temperature catalytic operation.

[0023] Preferably, the hot air inlet, fresh air inlet and dirty air outlet have the same aperture; multiple hot air inlets are arranged in a circular shape; and the CO absorption component includes a honeycomb carrier, a catalyst coating layer and a shock-absorbing layer.

[0024] Furthermore, the CO absorption component can fully react with CO, effectively improving the catalytic activation effect.

[0025] Preferably, the air flow rate of the hot air inlet pipe is 2 / 3-9 / 10 of the air flow rate of the dirty air exhaust pipe, and the fresh air inlet is natural air intake.

[0026] Furthermore, the gas can be effectively flowed, and the fresh air inlet is natural air intake.

[0027] Preferably, the operation includes the following steps:

[0028] S1. Exhaust system modification: Design and manufacture CO absorption components and outer shells based on the power of the vehicle to be modified and the geometric dimensions of the dirty air exhaust pipe;

[0029] S2. Periodic performance evaluation: Regularly test the CO concentration in the exhaust gas of the modified vehicles under idling conditions, and calculate the CO absorption efficiency attenuation rate based on the CO concentration in the exhaust gas before the modification;

[0030] S3. In-situ activation of the device: When the CO absorption efficiency attenuation rate is higher than 20%, the CO absorption component is activated in situ using a high-temperature resistant negative pressure fan, an air heater and a temperature control system.

[0031] Compared with the prior art, the present application can adjust the specifications of the corresponding outer shell, CO absorption assembly, and components installed in the outer shell according to the specifications of the rubber-tyred trackless vehicle, and can fully realize the catalytic activity absorption of CO.

[0032] Preferably, the operation of the in-situ activation of the device includes two stages: introducing hot air at 400° C. for 1-2 hours, and then introducing hot air at 600° C. for 1-2 hours.

[0033] Furthermore, the effect of catalytic activation is fully ensured.

[0034] The beneficial effects of the present invention are:

[0035] 1. The heat generated by the diesel power unit during operation can be absorbed by the finned heat absorber, and the heat can be transported to the heat dissipation coil assembly through one end of the return pipe, the pump body assembly and the guide pipe. The heat can be generated by the heat dissipation coil assembly, which can increase the temperature around the hot air inlet pipe and perform a heating operation;

[0036] 2. Through the in-situ hot air activation method of the catalytic oxidation type CO absorption component, the hot air activation device used can accurately adjust the operating parameters of the air heater through the temperature control system without causing damage to the engine, which can effectively extend the service life of the CO absorption component and reduce maintenance costs;

[0037] 3. This application proposes a method for evaluating the performance of catalytic oxidation CO absorption components, which can accurately reflect the working status and performance attenuation of the device, providing a scientific basis for the maintenance and management of the device;

[0038] 4. This application can quickly and efficiently activate the catalytic oxidation type CO absorption device, realize the long-term absorption of CO from the exhaust gas of trackless rubber-wheeled vehicles, and effectively improve the underground working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a structural diagram of the diesel power output assembly in the present invention;

[0040] Figure 2 It is a structural diagram of the first movable box and the second movable box in the present invention;

[0041] Figure 3 It is a structural diagram of the temperature control system of the present invention;

[0042] Figure 4 is a cross-sectional view of the outer shell of the present invention;

[0043] Figure 5 This is a block diagram of the operating steps of the tail gas CO absorption equipment in the present invention;

[0044] In the figure: 1 water inlet pipe, 2 nut, 3 outer shell, 301 upper exhaust pipe, 302 expansion pipe, 303 lower exhaust pipe, 4CO absorption component, 5 water outlet pipe, 6 temperature control system, 7 fresh air inlet, 8 hot air inlet, 9 cooling water channel, 10 sewage air outlet, 11 induced draft fan, 12 air heater, 13 hot air inlet pipe, 14 sewage air exhaust pipe, 15 high temperature resistant negative pressure fan, 16 diesel power output assembly, 17 heat release coil assembly, 18 guide pipe, 19 return pipe, 20 pump body assembly, 21 finned heat absorber. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0046] Reference Figure 1-4 , exhaust gas CO absorption equipment for the exhaust system of an explosion-proof diesel power unit, including a diesel power output component 16 and a hot air activation device; an outer shell 3 is installed on one side of the diesel power output component 16; 16 is provided with a residual heat recycling mechanism; it can effectively recover the heat generated during the operation of the explosion-proof diesel power unit, and can connect the heat to the hot air activation device, reducing the energy required for the operation of the hot air activation device, which helps to ensure the stable operation of the equipment.

[0047] Reference Figure 1 The waste heat recycling mechanism includes a finned heat absorber 21 installed on the diesel power output assembly 16, a pump body assembly 20 is connected to the finned heat absorber 21, one end of the pump body assembly 20 is connected to the guide pipe 18, one end of the guide pipe 18 is connected to the heat release coil assembly 17, the heat release coil assembly 17 is fixed to one side of the diesel power output assembly 16, one end of the heat release coil assembly 17 is connected to the return pipe 19, the return pipe 19 is arranged throughout the finned heat absorber 21, and the return pipe 19 is connected to the pump body assembly 20; it can transfer the waste heat generated by the diesel power unit 16 to the heat release coil assembly 17. The heat generated during operation is absorbed by the finned heat absorber 21. One end of the return pipe 19 is located in the finned heat absorber 21, which can perform heat exchange and increase the temperature of the material in the return pipe 19. The material that absorbs heat energy can be output through the pump body assembly 20, which is convenient for the heat to contact the hot air inlet pipe 13. The heat is transported to the heat release coil assembly 17 through one end of the return pipe 19, the pump body assembly 20 and the guide pipe 18. Heat can be generated through the heat release coil assembly 17, which can increase the temperature around the hot air inlet pipe 13 and perform heating operations.

[0048] Reference Figure 1-4The outer shell 3 is composed of an upper exhaust pipe 301, an expanded diameter pipe 302 and a lower exhaust pipe 303. The CO2 absorption component 4 is located in the expanded diameter pipe 302. The water inlet pipe 1 and the fresh air inlet 7 are respectively installed on both sides of the upper exhaust pipe 301. The water outlet pipe 5 and the dirty air outlet 10 are penetrated on both sides of the lower exhaust pipe 303. The expanded diameter pipe 302, the upper exhaust pipe 301 and the lower exhaust pipe 303 are jointly sheathed with a cooling water channel 9. The upper and lower ends of the cooling water channel 9 are respectively connected to the water inlet pipe 1 and the water outlet pipe 5. The cooling water channel 9 is arranged between the expanded diameter pipe 302 and the CO2 absorption component 4. The cooling water channel 9 can effectively absorb heat through the action of the cooling water channel 9 to prevent heat from being transferred to the outer shell 3, which helps to protect the staff.

[0049] Reference Figure 1-4 The upper end of the expanded tube 302 is penetrated by a plurality of hot air inlets 8, one end of the fresh air inlet 7 penetrates the upper exhaust pipe 301 and the cooling water channel 9 and extends to the upper end of the CO2 absorption component 4, and one end of the dirty air outlet 10 penetrates the lower exhaust pipe 303 and the cooling water channel 9 and extends to the lower end of the CO2 absorption component 4. The cooling water channel 9 can effectively absorb heat and prevent heat from being transferred to the outer shell 3, which helps to protect the staff.

[0050] Reference Figure 1-4 The fresh air inlet 7, the dirty air outlet 10 and the multiple hot air inlets 8 are screwed with a nut 2. When not in use, the nut 2 can effectively seal to avoid leakage.

[0051] Reference Figure 1-4 The hot air activation device includes a high-temperature resistant negative pressure fan 15, an air heater 12 and a temperature control system 6 arranged in the outer shell 3. The high-temperature resistant negative pressure fan 15 is connected to a dirty air exhaust pipe 14; the dirty air exhaust pipe 14 is connected to the dirty air outlet 10; the lower end of the air heater 12 is connected to an induced draft fan 11, and the other end of the air heater 12 is connected to multiple hot air inlet pipes 13, and the multiple hot air inlet pipes 13 are respectively connected to multiple hot air inlets 8; the induced draft fan 11 can make the gas flow quickly through the air heater 12 to heat the gas.

[0052] Reference Figure 1-4 The hot air inlet pipe 13 is arranged through the residual heat recycling mechanism. The temperature around the hot air inlet pipe 13 can be increased through the residual heat recycling mechanism, which helps to increase the temperature inside the hot air inlet pipe 13. The hot air inlet pipe 13 and the dirty air exhaust pipe 14 are both high-temperature resistant metal hoses; the hot air inlet pipe 13 and the dirty air exhaust pipe 14 are respectively fixedly connected to the hot air inlet 8 and the dirty air outlet 10 by threads.

[0053] Reference Figure 1-4The temperature control system 6 includes two thermocouples, a programmable logic controller, a contactor and a thyristor; the two thermocouples are respectively installed at the air inlet and the air outlet of the air heater 12; the programmable logic controller, the contactor and the thyristor are connected to the air heater 12, which is convenient for the staff to operate and can improve the effect of heating the air.

[0054] Reference Figure 1-4 The hot air inlet 8, the fresh air inlet 7 and the dirty air outlet 10 have the same aperture; the multiple hot air inlets 8 are arranged in a circular shape; the CO absorption component 4 includes a honeycomb carrier, a catalyst coating layer, and a shock-absorbing layer.

[0055] Reference Figure 5 , its operation includes the following steps:

[0056] S1. Exhaust system modification: Design and manufacture the CO absorption components and outer shell according to the power of the vehicle to be modified and the geometric dimensions of the dirty air exhaust pipe 14;

[0057] S2. Periodic performance evaluation: Regularly test the CO concentration in the exhaust gas of the modified vehicles under idling conditions, and calculate the CO absorption efficiency attenuation rate based on the CO concentration in the exhaust gas before the modification;

[0058] S3. In-situ activation of the device: When the CO absorption efficiency attenuation rate is higher than 20%, the CO absorption component is activated in situ using the high-temperature negative pressure fan 15, the air heater 12 and the temperature control system 6. The operation of the in-situ activation of the device includes two stages: passing 400°C hot air for 1-2 hours, and then passing 600°C hot air for 1-2 hours.

[0059] In the present invention, the CO absorption rate φ is calculated as follows: Assuming the initial CO absorption rate after the modification of the trackless rubber-tyred vehicle exhaust system is φ0, the calculation formula for the efficiency attenuation rate γ of the catalytic oxidation type CO absorption device is: The failure threshold of the catalytic oxidation type CO absorption device is 20%-50%.

[0060] In the present invention, during actual production and preparation, the equipment is started first. When the equipment is in operation, the heat generated by the diesel power unit 16 can be absorbed through the finned heat absorber 21. One end of the return pipe 19 is located in the finned heat absorber 21, which can perform heat exchange and increase the temperature of the material in the return pipe 19. The material that absorbs heat energy can be output through the pump body assembly 20, which is convenient for the heat to contact the hot air intake pipe 13. The heat is transported to the heat release coil assembly 17 through one end of the return pipe 19, the pump body assembly 20 and the guide pipe 18. The heat can be generated through the heat release coil assembly 17, which can increase the temperature around the hot air intake pipe 13 and perform a heating operation. The energy required for the operation of the equipment is reduced, and a 110kW engineering transport vehicle is used as the modified vehicle, such as Figure 4The catalytic oxidation type CO absorption device in this application includes a water inlet pipe 1, a nut 2, an outer shell 3, a CO absorption component 4, a water outlet pipe 5, a fresh air inlet 7, a hot air inlet 8, a cooling water channel 9 and a dirty air outlet 10; the outer shell 3 includes an upper exhaust pipe 301, an expansion pipe 302 and a lower exhaust pipe 303, and the CO absorption component 4 is placed in the expansion pipe 302; the cooling water channel 9 is embedded between the outer shell 3 and the CO absorption component 4, and the outer shell 3 is provided with a water inlet pipe 1 and a water outlet pipe 5 connected to the cooling water channel 9; a plurality of hot air inlets 8 and fresh air inlets 7 are opened at the upper end of the outer shell 3, and a dirty air outlet 10 is opened at the lower end. The hot air inlet 8, the fresh air inlet 7 and the dirty air outlet 10 are all connected to the internal air duct of the catalytic oxidation type CO absorption device.

[0061] like Figure 2-3 The system shown includes an induced draft fan 11, an air heater 12, a hot air inlet pipe 13, a dirty air exhaust pipe 14, a high-temperature resistant negative pressure fan 15 and a temperature control system 6; the induced draft fan 11 and the air heater 12 are fixedly connected by a flange, the hot air inlet pipe 13 and the air heater 12 are fixedly connected by a flange or thread, and the dirty air exhaust pipe 14 and the high-temperature resistant negative pressure fan 15 are fixedly connected by a flange; the temperature control system 6 includes a thermocouple, a programmable logic controller, a contactor and a thyristor, and a thermocouple is arranged at the air inlet and the air outlet of the air heater 12 respectively. The programmable logic controller is connected to the thermocouple and the thyristor through a signal line to adjust the working parameters of the air heater 12.

[0062] The outer shell 3 of the catalytic oxidation type CO absorption device is made of 304 stainless steel; the inner diameter of the hot air inlet 8, the fresh air inlet 7 and the dirty air outlet 10 are all 30 mm and are sealed by a nut 2; the four hot air inlets 8 are evenly distributed around the circumference of the upper end surface of the outer shell 3 of the catalytic oxidation type CO absorption device; the fresh air inlet 7 is located in the upper exhaust pipe 301, and the dirty air outlet 10 is located in the lower exhaust pipe 303.

[0063] The water inlet pipe 1 and the water outlet pipe 5 are connected to the water cooling system of the rubber-tyred trackless vehicle through flame-retardant high-pressure hoses.

[0064] The hot air inlet pipe 13 and the dirty air exhaust pipe 14 of the hot air activation device are both high-temperature resistant metal hoses; when the catalytic oxidation type CO absorption device is activated in situ, the hot air inlet pipe 13 and the dirty air exhaust pipe 14 are respectively fixedly connected to the hot air inlet 8 and the dirty air outlet 10 by threads.

[0065] The air flow rate of the hot air inlet pipe is 4m 3 / h, the air flow rate of the dirty air exhaust pipe is 5m 3 / h, the fresh air inlet is natural air intake.

[0066] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A tail gas CO removal device for an explosion-proof diesel power plant exhaust system, comprising a diesel power output assembly (16) and a hot air activation device, characterized in that: An outer shell (3) is installed on one side of the diesel power output assembly (16); The (16) is provided with a residual heat recycling mechanism; The outer shell (3) is composed of an upper exhaust pipe (301), an expanded diameter pipe (302) and a lower exhaust pipe (303); a CO absorption component (4) is installed in the expanded diameter pipe (302); a water inlet pipe (1) and a fresh air inlet (7) are installed on both sides of the upper exhaust pipe (301); and a water outlet pipe (5) and a dirty air outlet (10) are installed on both sides of the lower exhaust pipe (303); The upper end of the expanded tube (302) is penetrated by a plurality of hot air inlets (8); one end of the fresh air inlet (7) penetrates the upper exhaust pipe (301) and the cooling water channel (9) and extends to the upper end of the CO2 absorption component (4); one end of the dirty air outlet (10) penetrates the lower exhaust pipe (303) and the cooling water channel (9) and extends to the lower end of the CO2 absorption component (4); The exhaust pipe of the diesel power output assembly (16) is connected to the fresh air inlet (7).

2. The tail gas CO removal equipment for the exhaust system of an explosion-proof diesel power plant according to claim 1 is characterized by: The residual heat recycling mechanism comprises a finned heat absorber (21) mounted on a diesel power output assembly (16), a pump assembly (20) being connected to the finned heat absorber (21), one end of the pump assembly (20) being connected to a flow guide pipe (18), one end of the flow guide pipe (18) being connected to a heat release coil assembly (17), the heat release coil assembly (17) being fixed to one side of the diesel power output assembly (16), one end of the heat release coil assembly (17) being connected to a return pipe (19), the return pipe (19) being arranged through the finned heat absorber (21), and the return pipe (19) being connected to the pump assembly (20).

3. The tail gas CO removal equipment for the exhaust system of an explosion-proof diesel power plant according to claim 1 is characterized in that: A cooling water channel (9) is provided in the expanded diameter pipe (302), the upper exhaust pipe (301), and the lower exhaust pipe (303). The upper and lower ends of the cooling water channel (9) are respectively connected to the water inlet pipe (1) and the water outlet pipe (5). The cooling water channel (9) is provided between the expanded diameter pipe (302) and the CO2 absorption component (4). The fresh air inlet (7), the dirty air outlet (10) and the plurality of hot air inlets (8) are screwed with nuts (2).

4. The tail gas CO removal equipment for the exhaust system of an explosion-proof diesel power plant according to claim 1, characterized in that: The hot air activation device comprises a high-temperature resistant negative pressure blower (15), an air heater (12) and a temperature control system (6) installed on one side of (16); the high-temperature resistant negative pressure blower (15) is connected to a dirty air exhaust pipe (14); the dirty air exhaust pipe (14) is connected to a dirty air outlet (10); the lower end of the air heater (12) is connected to an induced draft fan (11); the other end of the air heater (12) is connected to a plurality of hot air inlet pipes (13); the plurality of hot air inlet pipes (13) are respectively connected to a plurality of hot air inlets (8); The hot air inlet pipe (13) is arranged through the residual heat recycling mechanism; The hot air inlet pipe (13) and the dirty air exhaust pipe (14) are both high-temperature resistant metal hoses; the hot air inlet pipe (13) and the dirty air exhaust pipe (14) are respectively fixedly connected to the hot air inlet (8) and the dirty air outlet (10) through threads.

5. The exhaust gas CO removal equipment for the exhaust system of an explosion-proof diesel power plant according to claim 1 is characterized in that: The temperature control system (6) comprises two thermocouples, a programmable logic controller, a contactor and a thyristor; the two thermocouples are respectively installed at the air inlet and the air outlet of the air heater (12); the programmable logic controller, the contactor and the thyristor are connected to the air heater (12).

6. The exhaust gas CO removal equipment for the exhaust system of an explosion-proof diesel power plant according to claim 1, characterized in that: The hot air inlet (8), the fresh air inlet (7) and the dirty air outlet (10) have the same aperture; the multiple hot air inlets (8) are arranged in a circular shape; and the CO absorption component (4) comprises a honeycomb carrier, a catalyst coating layer and a shock-absorbing layer.

7. The exhaust gas CO removal equipment for the exhaust system of an explosion-proof diesel power plant according to claim 1, characterized in that: The air flow rate of the hot air inlet pipe (13) is 2 / 3-9 / 10 of the air flow rate of the dirty air exhaust pipe (14), and the fresh air inlet (7) is natural air intake.

8. The exhaust gas CO removal equipment for the exhaust system of an explosion-proof diesel power plant according to claim 1 is characterized in that: Its operation includes the following steps: S1. Exhaust system modification: Design and manufacture the CO2 absorption component and the outer shell according to the power of the vehicle to be modified and the geometric dimensions of the dirty air exhaust pipe (14); S2. Periodic performance evaluation: Regularly test the CO concentration in the exhaust gas of the modified vehicles under idling conditions, and calculate the CO absorption efficiency attenuation rate based on the CO concentration in the exhaust gas before the modification; S3. In-situ activation of the device: When the CO absorption efficiency attenuation rate is higher than 20%, the CO absorption component is activated in-situ using a high-temperature negative pressure fan (15), an air heater (12) and a temperature control system (6).

9. The exhaust gas CO removal equipment for the exhaust system of an explosion-proof diesel power plant according to claim 6, characterized in that: The operation of the in-situ activation of the device includes two stages: introducing hot air at 400° C. for 1-2 hours, and then introducing hot air at 600° C. for 1-2 hours.

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