CN112413618A

CN112413618A - Soot blower

Info

Publication number: CN112413618A
Application number: CN202011336285.8A
Authority: CN
Inventors: 贾奥; 王热华; 贾星亮; 万为华; 王熙福; 黄军; 王熙毅
Original assignee: Anhua Huasheng Bioenergy Co ltd
Current assignee: Anhua Huasheng Bioenergy Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-02-26
Anticipated expiration: 2040-11-25
Also published as: CN112413618B

Abstract

The invention discloses a soot blower, comprising: and the spraying ends of the shock wave generators face the outer wall surface of an air pipe of the air preheater. The plurality of shock wave generators are commonly connected with a group of mixed gas supply devices and a group of power supply ignition devices, the mixed gas supply devices are used for supplying mixed gas to the shock wave generators, the power supply ignition devices are used for igniting the mixed gas in the shock wave generators according to a set pulse frequency to generate thermal explosion shock waves, and the shock wave generators are used for spraying the thermal explosion shock waves to the outer wall surface of the air pipe from the spraying ends of the thermal explosion shock waves to break and disperse plate knots and powder objects in the air preheater. According to the soot blowing device, the plate-shaped objects adhered to the outer wall surface of the air pipe and the powder-shaped objects dispersed in the gaps of the air pipe can be crushed and dispersed by the impact force of the thermal explosion shock waves with a large quantity and multiple angles, so that the problem of blockage of an air preheater can be effectively relieved, and the smoke circulation resistance is reduced.

Description

Soot blower

Technical Field

The invention relates to the technical field of biological generator sets, in particular to a soot blowing device.

Background

After the biomass fuel is combusted, the flue gas of the biomass fuel usually contains sulfur dioxide, sulfur trioxide, carbon monoxide, sodium ions and the like, and an air preheater is arranged in the flue gas to cool the flue gas and recover energy in the flue gas emission process.

When the flue gas flows through the air preheater, because the temperature is reduced, sulfur dioxide, sulfur trioxide and the like easily form sodium sulfate with sodium ions and water vapor, the sodium sulfate is mixed with the soot in the flue gas to form acid condensation dew plate condensate, carbon monoxide and the like easily form sodium hydroxide with the water vapor, the sodium hydroxide is mixed with the soot in the flue gas to form water condensation dew plate condensate, the hardened substances are hardened on the wall surface of a channel of the air preheater, so that the air preheater is blocked, the circulation resistance of the flue gas is increased, the load and the current of an induced draft fan at a flue gas discharge outlet are increased, the operation stability of a boiler is poor, the number of times of blowing-out and dust removal is increased, the blowing-out and dust removal are needed for 48 hours after 20 days of work, and the total power generation amount.

Disclosure of Invention

The invention provides a soot blowing device, which aims to solve the technical problem that the number of times of blowing out is increased due to serious soot deposition and blockage in the conventional air preheater.

The technical scheme adopted by the invention is as follows:

a sootblower comprising: the shock wave generators are distributed on the periphery of the air preheater, and the spraying end of each shock wave generator faces to the outer wall surface of an air pipe of the air preheater; the plurality of shock wave generators are commonly connected with a group of mixed gas supply devices and a group of power supply ignition devices, the mixed gas supply devices are used for supplying mixed gas to the shock wave generators, the power supply ignition devices are used for igniting the mixed gas in the shock wave generators according to a set pulse frequency to generate thermal explosion shock waves, and the shock wave generators are used for spraying the thermal explosion shock waves to the outer wall surface of the air pipe from the spraying ends of the thermal explosion shock waves to break and disperse plate knots and powder objects in the air preheater.

Further, the shock wave generator comprises a generator body and a spray head communicated with the generator body; the generator body is connected to the wall surface of a flue for mounting the air preheater, and the mixed gas supply device and the power supply ignition device are respectively communicated with the generator body; the connection angle between the spray head and the generator body is adjustable so as to spray towards the outer wall surface of the air pipe, and the distance between the spray head and the outer wall surface of the air pipe is 300-500 mm.

Furthermore, the shock wave generator is arranged above the air preheater, and the nozzle and the vertical plane form an included angle and extend downwards towards the outer wall surface of the air pipe; and/or the shock wave generators are arranged at the left side and the right side of the air preheater, and the nozzles form an included angle with the horizontal plane and extend downwards towards the outer wall surface of the air pipe; and/or the shock wave generator is arranged below the air preheater, and the nozzle and the vertical plane form an included angle and extend upwards towards the outer wall surface of the air pipe.

Furthermore, the number of the air preheaters is multiple, and the air preheaters are sequentially arranged at intervals along the height direction of the flue; the shock wave generators are arranged between the adjacent air preheaters and on the left side and the right side of each air preheater.

Further, the mixed gas supply device comprises a fuel gas supply source for supplying fuel gas, a fuel gas conveying pipe for conveying the fuel gas, an oxygen supply source for supplying oxygen, an oxygen conveying pipe for conveying the oxygen, a first compressed gas supply source for supplying compressed air for the process, a first compressed gas conveying pipe for conveying the compressed air for the process, a mixed gas mixing module for mixing the fuel gas, the oxygen and the compressed air for the process into mixed gas, and a mixed gas conveying pipe for conveying the mixed gas; two ends of the gas conveying pipe are respectively connected with a gas supply source and a mixed gas mixing module; two ends of the oxygen conveying pipe are respectively connected with an oxygen supply source and a mixed gas mixing module; two ends of the first compressed gas conveying pipe are respectively connected with a first compressed gas supply source and a mixed gas mixing module; the two ends of the mixed gas conveying pipe are respectively connected with the mixed gas mixing module and each shock wave generator.

Furthermore, the power supply ignition device comprises a power supply, a first cable, a second cable and pulse igniters arranged in the shock wave generators; two ends of the first cable are respectively connected with a power supply and the mixed gas mixing module; and two ends of the second cable are respectively connected with a power supply and a pulse igniter.

Furthermore, the mixed gas supply device also comprises a second compressed gas supply source for supplying compressed air for receiving instruments, a second compressed gas conveying pipe for conveying the compressed air for receiving the instruments, and a pneumatic distribution module for adjusting the ratio of fuel gas to oxygen gas and the compressed air in the mixed gas; the power supply ignition device also comprises a third cable; the pneumatic distribution module is connected in a pipeline of the mixed gas conveying pipe; the input end of the second compressed air conveying pipe is connected with a second compressed air supply source, and the output end of the second compressed air conveying pipe is connected with the pneumatic distribution module; the input end of the third cable is connected with a power supply, and the output end of the third cable is connected with the pneumatic distribution module.

Furthermore, the mixed gas conveying pipe comprises a mixed gas main conveying pipe and a plurality of mixed gas branch conveying pipes corresponding to one air preheater, and each mixed gas branch conveying pipe corresponds to one pneumatic distribution module; the input end of the mixed gas main conveying pipe is connected with the mixed gas mixing module, and the output end of the mixed gas main conveying pipe is connected with the pneumatic distribution module which is correspondingly arranged; the input end of the mixed gas branch conveying pipe is connected with the corresponding pneumatic distribution module, and the output end of the mixed gas branch conveying pipe is connected with a part of shock wave generator of the air preheater; the output ends of the second compressed gas conveying pipe and the third cable are respectively connected with the corresponding mixed gas mixing modules.

Furthermore, the soot blower also comprises a cold air supply device, and the output end of the cold air supply device is connected with each shock wave generator; the cold air supply device is used for supplying cold air to the shock wave generator so as to reduce the temperature of the thermal explosion shock wave, push the thermal explosion shock wave outwards and prevent the thermal explosion shock wave from reversely impacting the shock wave generator.

Further, the cold air supply device comprises a cold air supply source for supplying cold air, and a cold air conveying pipe for conveying the cold air; two ends of the cold air conveying pipe are respectively connected with a cold air source and the spray heads of the shock wave generators.

The invention has the following beneficial effects:

when the soot blower works, after mixed gas is supplied to the shock wave generator by the mixed gas supply device, the power supply ignition device is started to generate pulse electric sparks, the mixed gas in the shock wave generator is ignited under the action of the pulse electric sparks to generate thermal explosion shock waves, and the thermal explosion shock waves are sprayed to the outer wall surface of an air pipe arranged in the air preheater through the spraying end of the shock wave generator. Because the number of the shock wave generators is multiple, and the shock wave generators are respectively arranged at the periphery of the air preheater, the plate-shaped objects adhered to the outer wall surface of the air pipe and the powder dispersed in the air pipe gap can be smashed and dispersed by the impact force of the thermal explosion shock waves with multiple numbers and multiple angles, so that the problem of blockage of the air preheater can be effectively relieved, the smoke circulation resistance is reduced, the load and the current of an induced draft fan at a smoke discharge outlet are further reduced, the operation of the boiler is stable, the times of blowing out and cleaning the ash are reduced, the operation time is prolonged to 60 days, the blowing out and cleaning the ash are prolonged to 48 hours from 20 days of original operation, the total power generation amount of the generator set is increased by 15000 24 kilowatts and 15000 24 by 4 yuan production value is created.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural diagram of a sootblower of a preferred embodiment of the present invention.

Description of the figures

64. An air preheater; 81. a shock wave generator; 82. a mixed gas supply device; 821. a gas supply source; 822. a gas delivery pipe; 823. an oxygen supply source; 824. an oxygen delivery pipe; 825. a first compressed gas supply source; 826. a first compressed gas delivery pipe; 827. a mixed gas mixing module; 828. a mixed gas conveying pipe; 829. a second compressed gas supply source; 830. a second compressed gas delivery pipe; 831. a pneumatic distribution module; 84. a power supply ignition device; 841. a power supply; 842. a first cable wire; 843. a third cable line; 85. a cold air supply device; 851. a cold air supply source; 852. a cold air conveying pipe.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the accompanying drawings, but the invention can be embodied in many different forms, which are defined and covered by the following description.

Referring to fig. 1, a preferred embodiment of the present invention provides a sootblowing device including: a plurality of shock wave generators 81 arranged on the outer periphery of the air preheater 64, and the injection end of each shock wave generator 81 faces the outer wall surface of the air pipe of the air preheater 64. The plurality of shock wave generators 81 are commonly connected with a group of mixed gas supply devices 82 and a group of power supply ignition devices 84, the mixed gas supply devices 82 are used for supplying mixed gas to the shock wave generators 81, the power supply ignition devices 84 are used for igniting the mixed gas in the shock wave generators 81 according to a set pulse frequency to generate thermal explosion shock waves, and the shock wave generators 81 are used for spraying the thermal explosion shock waves to the outer wall surfaces of the air pipes from the spraying ends of the thermal explosion shock waves to break and disperse the plate knots and the powder materials in the air preheater 64.

When the soot blower of the present invention is in operation, the mixed gas supply device 82 supplies the mixed gas into the shock wave generator 81, the power supply ignition device 84 is started to generate pulse electric sparks, the mixed gas in the shock wave generator 81 is ignited under the action of the pulse electric sparks to generate thermal explosion shock waves, and the thermal explosion shock waves are sprayed onto the outer wall surface of the air pipe arranged in the air preheater 64 through the spraying end of the shock wave generator 81. Because the number of the shock wave generators 81 is multiple, and the shock wave generators 81 are respectively arranged at the periphery of the air preheater 64, the plate-shaped objects adhered to the outer wall surface of the air pipe and the powder-shaped objects dispersed in the air pipe gap can be smashed and dispersed by the impact force of the thermal explosion shock waves with multiple numbers and multiple angles, so that the problem of blockage of the air preheater 64 can be effectively relieved, the smoke circulation resistance is reduced, the load and the current of an induced draft fan at a smoke discharge outlet are further reduced, the operation of the boiler is stable, the times of blowing out and cleaning the ash are reduced, the time of blowing out and cleaning the ash is prolonged from 20 days of original operation to 60 days of operation to 48 hours of blowing out and cleaning the ash, the total power generation amount of the generator set is increased by 15000, 24, 4, and 0.75 yuan.

Alternatively, as shown in fig. 1, the shock wave generator 81 includes a generator body, and a spray head communicating with the generator body. The generator body is attached to a wall surface of a flue in which the air preheater 64 is installed, and the mixture supply device 82 and the power supply ignition device 84 are respectively communicated with the generator body. The connection angle between the spray head and the generator body is adjustable so as to spray towards the outer wall surface of the air pipe, and the distance between the spray head and the outer wall surface of the air pipe is 300-500 mm. In the alternative, because the connection angle between the spray head and the generator body is adjustable, no matter how the inner wall surfaces of the generator body and the flue are arranged and installed, the spray head connected with the generator body can be enabled to face the outer wall surface of the air pipe of the corresponding air preheater 64, so that the shock wave generator 81 can be flexibly installed, and the impact and dispersion effects of thermal explosion shock waves on plate caking objects and dispersion blocks can be adjusted by adjusting the angle of the spray head sprayed to the outer wall surface of the air pipe; and the distance between the spray head and the outer wall surface of the air pipe is 300-500 mm, so that the fluctuation and radiation range of the thermal explosion shock wave can be widest while the impact force of the thermal explosion shock wave on the outer wall surface of the air pipe is ensured, and the optimal impact force and impact effect are further obtained.

In the alternative, the shock wave generator 81 is arranged above the air preheater 64, and the nozzle forms an included angle with the vertical plane and extends downwards towards the outer wall surface of the air pipe; preferably, the included angle between the nozzle and the vertical plane is 20-60 degrees, the jet impact strength is best, the explosion radiation range of the shock wave is widest, and the crushing and scattering effects of the plate-shaped objects and the scattering blocks are best. And/or the shock wave generators 81 are arranged at the left side and the right side of the air preheater 64, and the nozzles form an included angle with the horizontal plane and extend downwards towards the outer wall surface of the air pipe; preferably, the included angle between the nozzle and the horizontal plane is 20-60 degrees, the jet impact strength is best, the explosion radiation range of the shock wave is widest, and the crushing and scattering effects of the plate-shaped objects and the scattering blocks are best. And/or the shock wave generator 81 is arranged below the air preheater 64, and the nozzle and the vertical plane form an included angle and extend upwards towards the outer wall surface of the air pipe; preferably, the included angle between the nozzle and the vertical plane is 20-60 degrees, the jet impact strength is best, the explosion radiation range of the shock wave is widest, and the crushing and scattering effects of the plate-shaped objects and the scattering blocks are best. Through the laying and structure setting mode of the shock wave generator 81, the impact and dispersion effects of the thermal explosion shock waves on the plate knots and the dispersed blocks can be adjusted, the fluctuation and radiation range of the thermal explosion shock waves can be widest while the impact force of the thermal explosion shock waves on the outer wall surface of the air pipe is ensured, and then the optimal impact force and impact effect are obtained.

In this alternative embodiment, the number of the air preheaters 64 is plural, and the plural air preheaters 64 are arranged at intervals in sequence along the height direction of the flue. The shock wave generators 81 are disposed between the adjacent air preheaters 64 and on the left and right sides of each air preheater 64.

Alternatively, as shown in fig. 1, the mixed gas supply device 82 includes a gas supply source 821 for supplying a gas, a gas delivery pipe 822 for delivering the gas, an oxygen supply source 823 for supplying oxygen, an oxygen delivery pipe 824 for delivering oxygen, a first compressed gas supply source 825 for supplying compressed air for a process, a first compressed gas delivery pipe 826 for delivering the compressed air for the process, a mixed gas mixing module 827 for mixing the gas, the oxygen, and the compressed air for the process into a mixed gas, and a mixed gas delivery pipe 828 for delivering the mixed gas. The gas delivery pipe 822 has both ends connected to the gas supply source 821 and the mixture mixing module 827, respectively. The oxygen delivery pipe 824 is connected at both ends thereof to an oxygen supply source 823 and a mixture mixing module 827, respectively. The first compressed air delivery pipe 826 has both ends connected to a first compressed air supply source 825 and a mixture mixing module 827, respectively. The two ends of the mixed gas delivery pipe 828 are respectively connected with a mixed gas mixing module 827 and each shock wave generator 81. When the mixed gas supply device works, the gas supply source 821 is started, the gas is conveyed to the mixed gas mixing module 827 through the gas conveying pipe 822, the oxygen supply source 823 is started, the oxygen is conveyed to the mixed gas mixing module 827 through the oxygen conveying pipe 824, the first compressed gas supply source 825 is started, and the process compressed air is conveyed to the mixed gas mixing module 827 through the first compressed gas conveying pipe 826; the mixed gas mixing module 827 mixes the fuel gas, the oxygen gas and the process compressed air into a mixed fuel gas, and then inputs the mixed fuel gas into the mixed gas conveying pipe 828, and the mixed gas conveying pipe 828 conveys the mixed fuel gas into each shock wave generator 81.

Alternatively, as shown in fig. 1, the power supply ignition device 84 includes a power supply 841, a first cable 842, a second cable, and a pulse igniter provided in each of the shock wave generators 81. The two ends of the first cable 842 are respectively connected with the power supply 841 and the mixed gas mixing module 827. The two ends of the second cable are respectively connected with a power supply 841 and a pulse igniter. When the power supply ignition device 84 of the invention works, the power supply 841 transmits current to the mixed gas mixing module 827 through the first cable 842 so as to support various actions of the mixed gas mixing module 827; similarly, power supply 841 delivers current to the pulse igniter via a second cable line to pulse-ignite the pulse igniter.

Further, as shown in fig. 1, the mixture supply device 82 further includes a second compressed air supply source 829 for supplying the compressed air for instrument, a second compressed air delivery pipe 830 for delivering the compressed air for instrument, and a pneumatic distribution module 831 for adjusting the ratio of the fuel gas to the oxygen gas and the compressed air in the mixed fuel gas. The power supply ignition device 84 also includes a third electrical cable 843. The pneumatic distribution module 831 is connected in the line of the mixture delivery pipe 828. The input end of second compressed air delivery pipe 830 is connected to second compressed air supply source 829, and the output end of second compressed air delivery pipe 830 is connected to pneumatic distribution module 831. The input end of the third cable 843 is connected with a power supply 841, and the output end of the third cable 843 is connected with the pneumatic distribution module 831. During operation, the second compressed air supply source 829 is activated to deliver the instrument compressed air to the pneumatic distribution module 831 through the second compressed air delivery pipe 830, and the power supply 841 delivers the current to the pneumatic distribution module 831 through the third cable 843 to support various operations of the pneumatic distribution module 831; the pneumatic distribution module 831 adjusts the ratio of the fuel gas to the oxygen gas and the compressed air in the mixed fuel gas according to the setting to form a rich-fuel mixed fuel gas of the fuel gas and the oxygen gas and a conventional mixed fuel gas of the fuel gas and the compressed air, and the mixed gas conveying pipe 828 conveys the rich-fuel mixed fuel gas or the conventional mixed fuel gas to the corresponding shock wave generator 81.

In an alternative embodiment, as shown in fig. 1, the mixture delivery pipe 828 includes a main mixture delivery pipe and a plurality of branch mixture delivery pipes corresponding to the air preheater 64, and each branch mixture delivery pipe corresponds to one of the pneumatic distribution module 831. The input end of the main mixed gas conveying pipe is connected with a mixed gas mixing module 827, and the output end of the main mixed gas conveying pipe is connected with a correspondingly arranged pneumatic distribution module 831. The input end of the mixed gas branch conveying pipe is connected with the corresponding pneumatic distribution module 831, and the output end of the mixed gas branch conveying pipe is connected with the partial shock wave generator 81 of the air preheater 64. The output ends of the second compressed air delivery pipe 830 and the third cable 843 are respectively connected with a corresponding mixed air mixing module 827. In this embodiment, on one hand, each air preheater 64 is provided with a plurality of mixed gas branch conveying pipes, and two ends of each mixed gas branch conveying pipe are respectively connected with one pneumatic distribution module 831 and a plurality of shock wave generators 81, so that the ratio of mixed gas in each mixed gas branch conveying pipe is different by adjusting the pneumatic distribution module 831, and thus the impact force of thermal explosion shock waves generated by combustion is different, the radiation range is different, and further the working requirements of different air preheaters 64 are met and adapted more flexibly, and the flexibility is better, and more energy-saving and more reliable; on the other hand, the structural arrangement of the air preheater 64 enables the soot blowing device to have better adaptability and higher flexibility, and meanwhile, the overall structure is simple and the layout is compact and reasonable.

Optionally, as shown in fig. 1, the sootblower further comprises a cold air supply device 85, and an output end of the cold air supply device 85 is connected to each of the shock wave generators 81. The cold air supply device 85 is used to supply cold air to the shock wave generator 81 to reduce the temperature of the thermal explosion shock wave, to push the thermal explosion shock wave outward, and to prevent the thermal explosion shock wave from reversely striking the shock wave generator 81. Through setting up cold wind feeding device 85 to supply with cold wind to each shock wave generator 81, and then reduce the temperature of thermal explosion shock wave, reduce the damage to air pipe, and usable cold wind is with the outside propelling movement of thermal explosion shock wave simultaneously, so that the radiation range of thermal explosion shock wave is wider, the impact force is stronger, and still can effectively prevent the reverse impact shock wave generator 81 that hits back of thermal explosion shock wave, improve shock wave generator 81's life.

In this alternative, as shown in fig. 1, the cold air supply device 85 includes a cold air supply source 851 for supplying cold air, and a cold air delivery pipe 852 for delivering cold air. The two ends of the cold air delivery pipe 852 are respectively connected with a cold air source and the spray heads of the shock wave generators 81.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sootblower, comprising:

the air preheater comprises a plurality of shock wave generators (81) arranged on the periphery of an air preheater (64), wherein the injection end of each shock wave generator (81) faces the outer wall surface of an air pipe of the air preheater (64);

the plurality of the shock wave generators (81) are commonly connected with a group of mixed gas supply devices (82) and a group of power supply ignition devices (84), the mixed gas supply devices (82) are used for supplying mixed gas to the shock wave generators (81), the power supply ignition devices (84) are used for igniting the mixed gas in the shock wave generators (81) according to a set pulse frequency to generate thermal explosion shock waves, and the shock wave generators (81) are used for spraying the thermal explosion shock waves to the outer wall surface of the air pipe from the spraying ends of the thermal explosion shock waves to break and disperse plate knots and powder in the air preheater (64).

2. The sootblower of claim 1,

the shock wave generator (81) comprises a generator body and a spray head communicated with the generator body;

the generator body is connected to the wall surface of a flue for installing the air preheater (64), and the mixed gas supply device (82) and the power supply ignition device (84) are respectively communicated with the generator body;

the connection angle between the spray head and the generator body is adjustable so as to spray towards the outer wall surface of the air pipe, and the distance between the spray head and the outer wall surface of the air pipe is 300-500 mm.

3. The sootblower of claim 2,

the shock wave generator (81) is arranged above the air preheater (64), and the nozzle and the vertical plane form an included angle and extend downwards towards the outer wall surface of the air pipe; and/or

The shock wave generators (81) are arranged on the left side and the right side of the air preheater (64), and the nozzles form an included angle with the horizontal plane and extend downwards towards the outer wall surface of the air pipe; and/or

Shock wave generator (81) are arranged in the below of air heater (64), the nozzle is the contained angle with vertical plane and upwards faces the outer wall surface extension of air pipe.

4. The sootblower of claim 3,

the number of the air preheaters (64) is multiple, and the air preheaters (64) are sequentially arranged at intervals along the height direction of the flue;

the shock wave generators (81) are arranged between the adjacent air preheaters (64) and on the left side and the right side of each air preheater (64).

5. The sootblower of claim 2,

the mixed gas supply device (82) comprises a fuel gas supply source (821) for supplying fuel gas, a fuel gas conveying pipe (822) for conveying fuel gas, an oxygen gas supply source (823) for supplying oxygen gas, an oxygen gas conveying pipe (824) for conveying oxygen gas, a first compressed gas supply source (825) for supplying compressed air for a process, a first compressed gas conveying pipe (826) for conveying the compressed air for the process, a mixed gas mixing module (827) for mixing the fuel gas, the oxygen gas and the compressed air for the process into mixed fuel gas, and a mixed gas conveying pipe (828) for conveying the mixed fuel gas;

the two ends of the gas delivery pipe (822) are respectively connected with the gas supply source (821) and the mixed gas mixing module (827);

the two ends of the oxygen conveying pipe (824) are respectively connected with the oxygen supply source (823) and the mixed gas mixing module (827);

the two ends of the first compressed air delivery pipe (826) are respectively connected with the first compressed air supply source (825) and the mixed air mixing module (827);

and two ends of the mixed gas conveying pipe (828) are respectively connected with the mixed gas mixing module (827) and each shock wave generator (81).

6. The sootblower of claim 5,

the power supply ignition device (84) comprises a power supply (841), a first cable (842), a second cable and pulse igniters arranged in the shock wave generators (81);

two ends of the first cable (842) are respectively connected with the power supply (841) and the mixed gas mixing module (827);

and two ends of the second cable are respectively connected with the power supply (841) and the pulse igniter.

7. The sootblower of claim 6,

the mixed gas supply device (82) further comprises a second compressed gas supply source (829) for supplying compressed air for instruments, a second compressed gas conveying pipe (830) for conveying the compressed air for instruments, and a pneumatic distribution module (831) for adjusting the ratio of fuel gas to oxygen gas and the compressed air in the mixed gas;

the power supply ignition device (84) further comprises a third electric cable (843);

the pneumatic distribution module (831) is connected to the pipeline of the mixed gas conveying pipe (828);

the input end of the second compressed air conveying pipe (830) is connected with the second compressed air supply source (829), and the output end of the second compressed air conveying pipe (830) is connected with the pneumatic distribution module (831);

the input end of the third cable (843) is connected with the power supply (841), and the output end of the third cable (843) is connected with the pneumatic distribution module (831).

8. The sootblower of claim 7,

the mixed gas conveying pipe (828) comprises a mixed gas main conveying pipe and a plurality of mixed gas branch conveying pipes corresponding to one air preheater (64), and each mixed gas branch conveying pipe corresponds to one pneumatic distribution module (831);

the input end of the main mixed gas conveying pipe is connected with the mixed gas mixing module (827), and the output end of the main mixed gas conveying pipe is connected with the corresponding pneumatic distribution module (831);

the input end of the mixed gas branch conveying pipe is connected with the corresponding pneumatic distribution module (831), and the output end of the mixed gas branch conveying pipe is connected with part of the shock wave generator (81) of the air preheater (64);

the output ends of the second compressed air delivery pipe (830) and the third cable (843) are respectively connected with the corresponding mixed air mixing module (827).

9. The sootblower of claim 2,

the soot blower further comprises a cold air supply device (85), and the output end of the cold air supply device (85) is connected with each shock wave generator (81);

the cold air supply device (85) is used for supplying cold air to the shock wave generator (81) so as to reduce the temperature of the thermal explosion shock wave, push the thermal explosion shock wave outwards and prevent the thermal explosion shock wave from reversely striking back on the shock wave generator (81).

10. The sootblower of claim 9,

the cold air supply device (85) comprises a cold air supply source (851) for supplying cold air and a cold air conveying pipe (852) for conveying the cold air;

two ends of the cold air conveying pipe (852) are respectively connected with the cold air source and the spray heads of the shock wave generators (81).