A dust pipe explosion-proof device for a coking process and a working method thereof

Abstract

The application discloses a dust pipeline explosion-proof device for a coking process and a working method thereof. The device comprises a dust pipeline, first and second atomizers arranged on the two sides of the dust pipeline, and a first and a second atomizing nozzle in tubular shape. The first and second atomizers are connected to the dust pipeline through the spray ends of the first and second atomizing nozzles respectively. The liquid inlet ends of the first and second atomizers are connected to first and second water solution supply pipes respectively. The water solution or electrostatic elimination liquid can be sprayed more uniformly to every area in the dust pipeline after atomization through the first and second atomizers and the first and second atomizing nozzles, so that the explosion of dust in the dust airflow pipeline can be effectively prevented. The first and second rotating air hoods can make the atomized water solution or the atomized electrostatic elimination liquid be distributed more uniformly in every area in the dust airflow pipeline.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of raw coal processing, more particularly to a dust pipeline explosion-proof device for a coking process and a working method. BACKGROUND

[0002] In the production process of raw coal coking in a coking plant, a large amount of dust and flammable and explosive gas will be generated, and if the dust or flammable and explosive gas reaches a certain concentration, it is easy to explode when encountering a fire source or static electricity, causing serious harm to personnel and equipment. The existing explosion-proof device can eliminate static electricity by spraying water solution into the pipeline, but the water solution still has the phenomenon of uneven distribution after entering the pipeline, resulting in static electricity and fire sources in some areas, thereby causing explosion risks. SUMMARY

[0003] The present application provides a dust pipeline explosion-proof device for a coking process and a working method, which can overcome the deficiencies in the prior art. The water solution or static electricity elimination liquid can be sprayed more uniformly into every area in the dust pipeline after being atomized by the first atomizer and the second atomizer and the first atomizing nozzle and the second atomizing nozzle. At the same time, a large amount of air flow is uniformly introduced into every area in the dust pipeline by the first fan and the second fan and the first rotating air baffle and the second rotating air baffle, which can further make the atomized water solution or atomized static electricity elimination liquid sprayed by the first atomizing nozzle and the second atomizing nozzle more uniformly distributed in every area in the dust pipeline, effectively preventing dust explosion in the dust pipeline. At the same time, the air flow velocity in the first air pipe and the second air pipe is detected by the first anemometer and the second anemometer, respectively, so as to adjust the power of the first fan and the second fan, ensuring that the air flow generated by the first fan and the second fan can always flow into the dust pipeline to dilute the dust-laden air flow in the dust pipeline.

[0004] Technical scheme: To achieve the above-mentioned purpose, the dust pipeline explosion-proof device for a coking process and the working method comprise a dust pipeline, first and second atomizers are arranged on both sides of the dust pipeline, and the first and second atomizers are vertically connected to the dust pipeline through the spray ends of the tubular first and second atomizing nozzles, respectively. The liquid inlet ends of the first and second atomizers are connected to first and second water solution supply pipes, respectively.

[0005] Further, first and second air diffusion assemblies are arranged on the upper and lower sides of the dust pipeline, respectively.

[0006] Further, the first air diffusion assembly comprises a first air blower, a first air pipe and a first rotary air cover, the middle part of the first air pipe is integrally connected to the upper wall of the dust pipe, the air outlet end of the first air blower is communicated with the upper end of the first air pipe, the lower end of the first air pipe penetrates the pipe wall of the dust pipe and extends into the interior of the dust pipe, and the first rotary air cover is rotatably connected to the end of the first air pipe extending into the dust pipe.

[0007] Further, the first rotary air cover comprises a diffusion cylinder and an end wall, the end wall is integrally connected to the upper end of the diffusion cylinder, a plurality of diffusion holes are distributed in a circular array on the circumferential surface of the diffusion cylinder, the diffusion holes form a diffusion hole group, the inner wall of the lower end of the diffusion cylinder is coaxially connected to the outer wall of the rotating device, the inner wall of the rotating device is connected to the outer wall of the first air pipe, a plurality of diffusion holes are distributed in a circular array in the end wall, a rotating shaft is integrally arranged at the center of the end wall, the lower end of the rotating shaft extends into the lumen of the first air pipe, and a plurality of air moving blades are connected to the rotating shaft through a plurality of connecting rods arranged in a circular array.

[0008] Further, the lower end of the rotating shaft of the first rotary air cover is provided with a first anemometer, the first anemometer is located in the lumen of the first air pipe, and the first anemometer can detect the flow rate of the air flow in the first air pipe.

[0009] Further, the intersection of the axis line of the first air pipe and the second air pipe and the axis line of the first atomizing nozzle and the second atomizing nozzle is located on the axis of the dust pipe, and the axis line of the first air pipe and the second air pipe, the axis line of the first atomizing nozzle and the second atomizing nozzle and the axis of the dust pipe are perpendicular to each other.

[0010] Further, the rotating direction of the rotating part of the first anemometer is perpendicular to the rotating direction of each air moving blade around the rotating shaft.

[0011] Further, when the dust concentration in the dust pipeline reaches the pre-warning value, the first atomizer and the second atomizer are started, the spray ends of the first atomizing nozzle and the second atomizing nozzle spray the atomized water solution or the atomized static elimination liquid into the dust pipeline at the same time, the static electricity on the inner wall of the dust pipeline is reduced, and at the same time, the first fan and the second fan are started, the air flow generated by the first fan and the second fan is discharged into the dust pipeline, the dust-containing air flow in the dust pipeline is diluted, and the dust concentration in the dust pipeline is reduced. In this process, the air flow in the first air pipe flows into the first rotating air baffle, the air flow flowing out of the first air pipe can make each wind blade rotate around the axis of the rotating air baffle, and the air flow changes from a straight line to a vortex, and is uniformly jetted from each diffusion hole of the diffusion cylinder and the end wall to the dust pipeline and can be jetted from each diffusion hole to each area in the dust pipeline. Similarly, the air flow flowing into the second rotating air baffle from the second air pipe can be uniformly jetted from each diffusion hole of the diffusion cylinder and the end wall to the dust pipeline and can be jetted from each diffusion hole to each area in the dust pipeline. Thus, the dust concentration in each area of the dust pipeline tends to be the same, thereby preventing local explosion of dust particles due to uneven concentration in the dust pipeline. At the same time, the air flow jetted from the first rotating air baffle and the second rotating air baffle can diffuse the atomized water solution or the atomized static elimination liquid sprayed from the first atomizing nozzle and the second atomizing nozzle.

[0012] Further, when the dust concentration in the dust pipeline reaches the pre-warning value, the first atomizer and the second atomizer are started, the spray ends of the first atomizing nozzle and the second atomizing nozzle spray the atomized water solution or the atomized static elimination liquid into the dust pipeline at the same time, the static electricity on the inner wall of the dust pipeline is reduced, and at the same time, the first fan and the second fan are started, the air flow generated by the first fan and the second fan is discharged into the dust pipeline, the dust-containing air flow in the dust pipeline is diluted, and the dust concentration in the dust pipeline is reduced. In this process, the air flow in the first air pipe flows into the first rotating air baffle, the air flow flowing out of the first air pipe can make each wind blade rotate around the axis of the rotating air baffle, and the air flow changes from a straight line to a vortex, and is uniformly jetted from each diffusion hole of the diffusion cylinder and the end wall to the dust pipeline and can be jetted from each diffusion hole to each area in the dust pipeline. Similarly, the air flow flowing into the second rotating air baffle from the second air pipe can be uniformly jetted from each diffusion hole of the diffusion cylinder and the end wall to the dust pipeline and can be jetted from each diffusion hole to each area in the dust pipeline. Thus, the dust concentration in each area of the dust pipeline tends to be the same, thereby preventing local explosion of dust particles due to uneven concentration in the dust pipeline. At the same time, the air flow jetted from the first rotating air baffle and the second rotating air baffle can diffuse the atomized water solution or the atomized static elimination liquid sprayed from the first atomizing nozzle and the second atomizing nozzle.

[0013] Beneficial effect: The dust duct explosion-proof device and working method of the coking process of the present invention, through the first atomizer and the second atomizer and the first atomizing nozzle and the second atomizing nozzle, can make the aqueous solution or static elimination liquid be sprayed more evenly to each area in the dust duct after atomization, and at the same time, through the first fan and the second fan and the first rotating wind hood and the second rotating wind hood, a large amount of air flow is evenly introduced into each area in the dust duct, while reducing the dust concentration in each area in the dust air flow pipe, and further making the atomized aqueous solution or atomized static elimination liquid sprayed from the spray end of the first atomizing nozzle and the second atomizing nozzle more evenly distributed in each area in the dust air flow pipe, which can effectively prevent dust from exploding in the dust air flow pipe. At the same time, the air flow velocity in the first air duct and the second air duct is detected respectively by the first anemometer and the second anemometer, thereby adjusting the power of the first fan and the second fan to ensure that the air flow generated by the first fan and the second fan can always flow into the dust duct, diluting the air flow with dust in the dust duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the forward structure of a dust duct explosion-proof device for a coking process according to the present invention;

[0015] Figure 2 This is a schematic diagram of the axial structure of a dust duct explosion-proof device for a coking process according to the present invention;

[0016] Figure 3 Schematic diagram of the structure of the first wind diffusion assembly of the present invention;

[0017] Figure 4 It is a structural schematic diagram of the first rotating wind cover of the present invention in a half-section state. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] As attached Figures 1-4 As shown, a dust pipe explosion-proof device and working method for a coking process include a dust pipe 1, a dust concentration detector is provided in the dust pipe 1, and the dust concentration detector can monitor the dust in the dust pipe 1 in real time. The dust concentration detector is connected to the control system by a wireless connection, such as Figure 1As shown, a first atomizer 2a and a second atomizer 2b are provided on both sides of the dust duct 1, and the control system can control the opening and closing of the first atomizer 2a and the second atomizer 2b. The first atomizer 2a and the second atomizer 2b are vertically connected to the dust duct 1 through the spray end of the tubular first atomizing nozzle 3a and the spray end of the tubular second atomizing nozzle 3b respectively; the liquid inlet end of the first atomizer 2a and the liquid inlet end of the second atomizer 2b are respectively connected to the first aqueous solution supply pipe 8a and the second aqueous solution supply pipe 8b, and the first aqueous solution supply pipe 8a and the second aqueous solution supply pipe 8b respectively supply aqueous solution or static elimination liquid to the first atomizer 2a and the second atomizer 2b, thereby eliminating static electricity in the dust duct 1 and preventing dust particles from rubbing against the pipe wall of the dust duct 1 to generate static electricity and thus cause dust explosion.

[0020] like Figure 2 As shown, the dust duct 1 is provided with a first wind diffusion component 7a and a second wind diffusion component 7b on the upper and lower sides respectively; Figure 3 The first wind diffusion assembly 7a shown includes a first air blower 4a, a first air duct 5a and a first rotating air cover 6a, the middle part of the first air duct 5a is vertically connected to the upper wall of the dust duct 1, the air outlet end of the first air blower 4a is connected to the upper end of the first air duct 5a, the lower end of the first air duct 5a passes through the pipe wall of the dust duct 1 and extends into the interior of the dust duct 1, and the first rotating air cover 6a is rotatably connected to one end of the first air duct 5a extending into the dust duct 1; the second wind diffusion assembly 7b includes a second air blower 4b, a second air duct 5b and a second rotating air cover 6b, the middle part of the second air duct 5b is vertically connected to the upper wall of the dust duct 1, the air outlet end of the second air blower 4b is connected to the upper end of the second air duct 5b, the lower end of the second air duct 5b passes through the pipe wall of the dust duct 1 and extends into the interior of the dust duct 1, and the second rotating air cover 6b is rotatably connected to one end of the second air duct 5b extending into the dust duct 1; when a When the dust concentration detector detects that the dust in the dust duct 1 reaches the alarm value, the control system starts the first fan 4a and the second fan 4b, and the air flow generated by the first fan 4a and the second fan 4b enters the first rotating wind hood 6a and the second rotating wind hood 6b through the first air duct 5a and the second air duct 5b respectively. The first rotating wind hood 6a and the second rotating wind hood 6b rotate around their own axes under the action of the air flow, and the air flow is evenly sprayed into the dust duct 1, so that the air flow dilutes the air flow with dust in the dust duct 1, reduces the dust concentration in the dust duct 1, and diffuses the atomized aqueous solution mist or static eliminator mist sprayed from the spray end of the first atomizing nozzle 3a and the spray end of the second atomizing nozzle 3b, so that the aqueous solution mist or static eliminator mist can be evenly dispersed to all areas in the dust duct 1; the control system can control the start or shut down of the first fan 4a and the second fan 4b.

[0021] As Figure 2 shown, the intersection of the axis connection line 9 of the first air pipe 5a and the second air pipe 5b and the axis connection line 10 of the first atomizing nozzle 3a and the second atomizing nozzle 3b is located on the axis of the dust pipeline 1, and the axis connection line 9 of the first air pipe 5a and the second air pipe 5b, the axis connection line 10 of the first atomizing nozzle 3a and the second atomizing nozzle 3b, and the axis of the dust pipeline 1 are perpendicular to each other, further ensuring that the first rotating air cover 6a and the second rotating air cover 6b can uniformly disperse the atomized water solution water mist or electrostatic elimination liquid water mist sprayed from the first atomizing nozzle 3a and the second atomizing nozzle 3b to all areas inside the dust pipeline 1.

[0022] Because the structures of the first rotating air cover 6a and the second rotating air cover 6b are the same in the coking process dust pipeline explosion-proof device and working method, the basic structure of the first rotating air cover 6a and the second rotating air cover 6b will be described taking the first rotating air cover 6a as an example.

[0023] As Figure 4 shown, the first rotating air cover 6a includes a diffusion cylinder 61 and an end wall 68, the end wall 68 is integrally connected to the upper end of the diffusion cylinder 61, a plurality of diffusion holes 63 are distributed in a circular array on the circumferential surface of the diffusion cylinder 61, the plurality of diffusion holes constitute a diffusion hole group, the inner wall of the lower end of the diffusion cylinder 61 is coaxially connected to the outer wall of the rotating device 66, the inner wall of the rotating device 66 is connected and arranged with the outer wall of the first air pipe 5a, a plurality of diffusion holes 63 are distributed in a circular array on the end wall 68, a rotating shaft 62 is integrally arranged at the center of the end wall 68, the lower end of the rotating shaft 62 extends into the lumen of the first air pipe 5a, a plurality of wind blades 64 are connected to the rotating shaft 62 through a plurality of connecting rods 65 distributed in a circular array; when the air flow in the first air pipe 5a hits each wind blade 64, each wind blade 64 rotates with the diffusion cylinder 61 and the end wall 68 around the axis of the rotating shaft 62, at this time, the air flow flowing into the first rotating air cover 6a from the first air pipe 5a can uniformly flow out of the diffusion holes opened on the diffusion cylinder 61 and the end wall 68, and uniformly jet to every area inside the dust pipeline 1.

[0024] The working method of the dust pipeline explosion-proof device of the coking process of the application: when the dust concentration detector arranged in the dust pipeline 1 detects that the dust concentration in the dust pipeline 1 reaches the early warning value, the dust concentration detector sends an early warning signal to the control system, and after receiving the early warning signal, the control system controls to start the first atomizer 2a and the second atomizer 2b, so that the water solution or the static electricity eliminating liquid supplied from the first water solution supply pipe 8a and the second water solution supply pipe 8b into the first atomizer 2a and the second atomizer 2b, respectively, is atomized in the first atomizer 2a and the second atomizer 2b, respectively, and the spraying end of the first atomizing nozzle 3a and the spraying end of the second atomizing nozzle 3b spray the atomized water solution or the atomized static electricity eliminating liquid into the dust pipeline 1 at the same time, so as to reduce the static electricity on the inner wall of the dust pipeline 1, prevent the dust particles from generating static electricity by rubbing with the inner wall of the dust pipeline 1, and further prevent the dust from exploding in the dust pipeline 1. At the same time, the control system controls to start the first fan 4a and the second fan 4b, so that the air flow generated by the first fan 4a and the second fan 4b is discharged into the dust pipeline 1 from the first air pipe 5a and the second air pipe 5b, respectively, so as to dilute the air flow with dust in the dust pipeline 1, reduce the dust concentration in the dust pipeline 1, so that the dust particles in the dust pipeline 1 cannot meet the explosion condition due to the concentration, and thus the explosion in the dust pipeline 1 cannot occur.

[0025] In this process, the air flow generated by the first fan 4a and the second fan 4b flows into the first air pipe 5a and the second air pipe 5b respectively, and is discharged into the dust pipe 1 from the first rotating air cover 6a and the second rotating air cover 6b. When the air flow in the first air pipe 5a flows into the first rotating air cover 6a, the air flow flowing out of the first air pipe 5a hits each wind blade 64, and the force of the air flow flowing out of the first air pipe 5a on each wind blade 64 can make each wind blade 64 rotate around the axis of the rotating shaft 62 with the diffusion cylinder 61 and the end wall 68. Under the action of each wind blade 64, the air flow flowing into the first rotating air cover 6a from the first air pipe 5a changes from a straight line to a vortex, and can be uniformly jetted from each diffusion hole 63 of the diffusion cylinder 61 and the end wall 68 into the dust pipe 1, and can be jetted from each diffusion hole 63 into each area in the dust pipe 1; when the air flow in the second air pipe 5b flows into the second rotating air cover 6b, the air flow flowing out of the second air pipe 5b hits each wind blade 64, and the force of the air flow flowing out of the second air pipe 5b on each wind blade 64 can make each wind blade 64 rotate around the axis of the rotating shaft 62 with the diffusion cylinder 61 and the end wall 68. Under the action of each wind blade 64, the air flow flowing into the second rotating air cover 6b from the second air pipe 5b changes from a straight line to a vortex, and can be uniformly jetted from each diffusion hole 63 of the diffusion cylinder 61 and the end wall 68 into the dust pipe 1, and can be jetted from each diffusion hole 63 into each area in the dust pipe 1;

[0026] Thus, the dust concentration in each area of the dust pipe 1 tends to be the same, thereby preventing local explosion of dust particles due to uneven concentration in the dust pipe 1; at the same time, the air flow jetted from the first rotating air cover 6a and the second rotating air cover 6b can diffuse the atomized water solution or atomized static eliminating liquid sprayed from the first atomizing nozzle 3a and the second atomizing nozzle 3b, so that the water mist or static eliminating liquid after being atomized by the first atomizer 2a and the second atomizer 2b and the first atomizing nozzle 3a and the second atomizing nozzle 3b can be uniformly diffused into each area in the dust pipe 1, thereby effectively eliminating static electricity in each area of the dust pipe 1, thereby avoiding static electricity generated by friction between dust particles and the cavity wall of the dust pipe 1, and thereby causing dust explosion, and the water mist of the water solution can also effectively avoid the occurrence of a fire source in the dust pipe 1, thereby avoiding dust explosion caused by a fire source.

[0027] In the first embodiment described above, although the control system can reduce the dust concentration in the dust pipeline 1 and eliminate the static electricity on the inner wall of the dust pipeline 1 by controlling the first atomizer 2a, the second atomizer 2b, the first fan 4a and the second fan 4b, since the flow of the dust-carrying air flow in the dust pipeline is not stable and changes at any time during the coking process, and the dust concentration of the dust-carrying air flow also changes at any time, the pressure in the dust pipeline 1 is in a state of change at any time, so when the pressure in the dust pipeline 1 is too high, if the first fan 4a and the second fan 4b are still running at the rated power at this time, it may cause that the air flow generated by the first fan 4a and the second fan 4b cannot be diffused into the dust pipeline 1 through the first rotating air baffle 6a and the second rotating air baffle 6b, and when the pressure in the dust pipeline 1 is too low, if the first fan 4a and the second fan 4b are still running at the rated power at this time, it will cause that the excessive energy consumption of the first fan 4a and the second fan 4b is invalid. In view of the above problems, the second embodiment is proposed as follows.

[0028] In the second embodiment of the working method of the dust pipeline explosion-proof device in the coking process of the application:

[0029] As shown in Figure 4 The lower end of the rotating shaft 62 of the first rotating air baffle 6a is provided with a first air flow meter 67, the first air flow meter 67 is located in the lumen of the first air pipe 5a, and the first air flow meter 67 can detect the flow rate of the air flow in the first air pipe 5a; the lower end of the rotating shaft 62 of the second rotating air baffle 6b is provided with a second air flow meter, the second air flow meter is located in the lumen of the second air pipe 5b, and the second air flow meter can detect the flow rate of the air flow in the second air pipe 5b, and the rotating direction of the rotating part of the first air flow meter 67 and the second air flow meter is perpendicular to the rotating direction of each air moving blade 64 around the rotating shaft 62; the first air flow meter 67 and the second air flow meter are connected with the control system by wireless connection, and compared with the first embodiment, in the second embodiment, the control system can not only control the start and stop of the first fan 4a and the second fan 4b, but also further adjust the power of the first fan 4a and the second fan 4b according to the flow rate of the air flow in the first air pipe 5a and the second air pipe 5b measured by the first air flow meter 67 and the second air flow meter respectively.

[0030] In the second embodiment, the working method of the dust pipe explosion-proof device of the coking process of the present application is as follows: when the dust concentration detector arranged in the dust pipe 1 detects that the dust concentration in the dust pipe 1 reaches the pre-warning value, the dust concentration detector sends a pre-warning signal to the control system, and after receiving the pre-warning signal, the control system controls to start the first atomizer 2a and the second atomizer 2b, so that the water solution or the static electricity eliminating liquid supplied from the first water solution supply pipe 8a and the second water solution supply pipe 8b into the first atomizer 2a and the second atomizer 2b, respectively, is atomized in the first atomizer 2a and the second atomizer 2b, respectively, and the spray ends of the first atomizing nozzle 3a and the second atomizing nozzle 3b spray the atomized water solution or the atomized static electricity eliminating liquid into the dust pipe 1 at the same time, so as to reduce the static electricity on the inner wall of the dust pipe 1, prevent the dust particles from generating static electricity by rubbing against the inner wall of the dust pipe 1, and further prevent the dust from exploding in the dust pipe 1. At the same time, the control system controls to start the first fan 4a and the second fan 4b, so that the air flow generated by the first fan 4a and the second fan 4b flows into the first rotating air cover 6a and the second rotating air cover 6b through the first air pipe 5a and the second air pipe 5b, respectively, and is uniformly jetted into each area in the dust pipe 1 through the first rotating air cover 6a and the second rotating air cover 6b, so as to dilute the air flow with dust in the dust pipe 1 by the air flow, reduce the dust concentration in the dust pipe 1, and make the dust concentration in each area in the dust pipe 1 tend to be the same, thereby preventing the dust particles from exploding locally in the dust pipe 1 due to uneven concentration. In this process, the air flow generated by the first fan 4a and the second fan 4b flows into the first air pipe 5a and the second air pipe 5b, respectively, and is discharged into the dust pipe 1. In this process, the first air flow meter 67 detects the flow rate of the air flow in the first air pipe 5a. In the state that the first fan 4a operates at rated power, if the flow rate of the air flow in the first air pipe 5a detected by the first air flow meter 67 is too slow, it represents that the pressure in the dust pipe 1 is too large or the power of the first fan 4a is too low at this time. At this time, the control system controls to increase the power of the first fan 4a, thereby increasing the flow of the air flow in the first air pipe 5a, so that the pressure in the first rotating air cover 6a is greater than the pressure in the dust pipe 1, thereby enabling the air flow to flow smoothly into the dust pipe 1, diluting the air flow with dust in the dust pipe 1, and reducing the dust concentration in the dust pipe 1.If the flow rate of the air flow in the first air duct 5a detected by the first air speed meter 67 is too fast, it means that the pressure in the dust duct 1 is too small or the power of the first air blower 4a is too high. At this time, the control system controls the power of the first air blower 4a to decrease, so as to decrease the flow rate of the air flow in the first air duct 5a, and make the flow rate of the air flow in the first air duct 5a detected by the first air speed meter 67 tend to be normal. In this process, the pressure in the first rotating air cover 6a is always greater than the pressure in the dust duct 1, so as to make the air flow flow into the dust duct 1 smoothly, dilute the air flow with dust in the dust duct 1, and decrease the dust concentration in the dust duct 1.

[0031] Similarly, in the state that the second air blower 4b operates at the rated power, if the flow rate of the air flow in the second air duct 5b detected by the second air speed meter is too slow, it means that the pressure in the dust duct 1 is too large or the power of the second air blower 4b is too low. At this time, the control system controls the power of the second air blower 4b to increase, so as to increase the flow rate of the air flow in the second air duct 5b, and make the pressure in the second rotating air cover 6b greater than the pressure in the dust duct 1, so as to make the air flow flow into the dust duct 1 smoothly, dilute the air flow with dust in the dust duct 1, and decrease the dust concentration in the dust duct 1. If the flow rate of the air flow in the second air duct 5b detected by the second air speed meter is too fast, it means that the pressure in the dust duct 1 is too small or the power of the second air blower 4b is too high. At this time, the control system controls the power of the second air blower 4b to decrease, so as to decrease the flow rate of the air flow in the second air duct 5b, and make the flow rate of the air flow in the second air duct 5b detected by the second air speed meter tend to be normal. In this process, the pressure in the second rotating air cover 6b is always greater than the pressure in the dust duct 1, so as to make the air flow flow into the dust duct 1 smoothly, dilute the air flow with dust in the dust duct 1, and decrease the dust concentration in the dust duct 1.

[0032] The above is the preferred embodiment of the present application. It should be pointed out that those skilled in the art can make some improvements and refinements without departing from the principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A dust pipe explosion-proof device for a coking process, characterized by: The invention comprises a dust pipe (1), wherein a first atomizer (2a) and a second atomizer (2b) are provided on both sides of the dust pipe (1), the first atomizer (2a) and the second atomizer (2b) are respectively connected to the dust pipe (1) vertically through the spray end of a tubular first atomizing nozzle (3a) and the spray end of a tubular second atomizing nozzle (3b); the liquid inlet end of the first atomizer (2a) and the liquid inlet end of the second atomizer (2b) are respectively connected to a first aqueous solution supply pipe (8a) and a second aqueous solution supply pipe (8b); The dust duct (1) is provided with a first wind diffusion component (7a) and a second wind diffusion component (7b) on the upper and lower sides respectively; The first wind diffusion component (7a) comprises a first fan (4a), a first air duct (5a) and a first rotating wind cover (6a); the middle portion of the first air duct (5a) is integrally connected vertically to the upper wall of the dust duct (1); the air outlet end of the first fan (4a) is connected to the upper end of the first air duct (5a); the lower end of the first air duct (5a) passes through the wall of the dust duct (1) and extends into the interior of the dust duct (1); the first rotating wind cover (6a) is rotatably connected to one end of the first air duct (5a) extending into the dust duct (1); The second wind diffusion component (7b) comprises a second fan (4b), a second air duct (5b) and a second rotating wind cover (6b); the middle portion of the second air duct (5b) is integrally connected vertically to the upper wall of the dust duct (1); the air outlet end of the second fan (4b) is connected to the upper end of the second air duct (5b); the lower end of the second air duct (5b) passes through the wall of the dust duct (1) and extends into the interior of the dust duct (1); the second rotating wind cover (6b) is rotatably connected to one end of the second air duct (5b) extending into the dust duct (1); The first rotating wind cover (6a) comprises a diffusion cylinder (61) and an end wall (68), the end wall (68) being integrally connected to the upper end of the diffusion cylinder (61), and a plurality of diffusion holes (63) being hollowed out and distributed in a circular array on the circumferential surface of the diffusion cylinder (61), the plurality of diffusion holes forming a diffusion hole group; The end wall (68) is hollowed out in a circular array to form a plurality of diffusion holes (63). The second rotating wind cover has the same structure as the first rotating wind cover (6a).

2. The dust duct explosion-proof device for a coking process according to claim 1, characterized in that: The inner wall of the lower end of the diffusion tube (61) is coaxially connected to the outer wall of the rotating device (66), and the inner wall of the rotating device (66) is connected to the outer wall of the first air duct (5a). A rotating shaft (62) is coaxially provided at the center of the end wall (68). The lower end of the rotating shaft (62) extends into the tube cavity of the first air duct (5a). The rotating shaft (62) is connected to a plurality of pneumatic blades (64) through a plurality of connecting rods (65) distributed in a circular array. When the air flow in the first air duct (5a) hits each pneumatic blade (64), each pneumatic blade (64) rotates around the axis of the rotating shaft (62) together with the diffusion tube (61) and the end wall (68).

3. The dust duct explosion-proof device for a coking process according to claim 2, characterized in that: A first anemometer (67) is installed at the lower end of the rotating shaft (62) of the first rotating wind cover (6a). The first anemometer (67) is located in the tube cavity of the first air duct (5a). The first anemometer (67) can detect the flow rate of the air flow in the first air duct (5a).

4. The dust duct explosion-proof device for a coking process according to claim 3, characterized in that: The intersection of the axis line (9) connecting the first air duct (5a) and the second air duct (5b) and the axis line (10) connecting the first atomizing nozzle (3a) and the second atomizing nozzle (3b) is located on the axis of the dust duct (1), and the axis line (9) connecting the first air duct (5a) and the second air duct (5b), the axis line (10) connecting the first atomizing nozzle (3a) and the second atomizing nozzle (3b), and the axis of the dust duct (1) are perpendicular to each other.

5. The dust duct explosion-proof device for a coking process according to claim 4, characterized in that: The rotation direction of the rotating part of the first anemometer (67) is perpendicular to the rotation direction of each wind blade (64) around the rotation axis (62).

6. The operating method of the dust duct explosion-proof device in a coking process according to claim 2, characterized in that: When the dust concentration in the dust duct (1) reaches the warning value, the first atomizer (2a) and the second atomizer (2b) are started, so that the spray end of the first atomizing nozzle (3a) and the spray end of the second atomizing nozzle (3b) simultaneously spray the atomized aqueous solution or the atomized static elimination liquid into the dust duct (1), thereby reducing the static electricity on the inner wall of the dust duct (1). At the same time, the first fan (4a) and the second fan (4b) are started, so that the air flow generated by the first fan (4a) and the second fan (4b) is discharged into the dust duct (1), thereby reducing the static electricity on the inner wall of the dust duct (1). (1) is diluted with dust in the air flow, thereby reducing the dust concentration in the dust duct (1). During this process, the air flows generated by the first fan (4a) and the second fan (4b) flow into the first air duct (5a) and the second air duct (5b) respectively, and are discharged into the dust duct (1) from the first rotating wind cover (6a) and the second rotating wind cover (6b) respectively. When the air flow in the first air duct (5a) flows into the first rotating wind cover (6a), the force of the air flow flowing out of the first air duct (5a) on each wind blade (64) can make Each wind blade (64) rotates around the axis of the rotating shaft (62) with the diffuser (61) and the end wall (68) at the same time, and the air flow changes from the original linear air flow to the vortex air flow, and is evenly ejected from the diffuser holes (63) opened on the diffuser (61) and the end wall (68) into the dust duct (1), and can be ejected from the diffuser holes (63) to each area in the dust duct (1); similarly, the air flow flowing from the second air duct (5b) into the second rotating wind cover (6b) can be evenly ejected from the diffuser (61) and the end wall (68) The diffuser holes (63) are opened to spray into the dust duct (1), and can spray from the diffuser holes (63) to each area in the dust duct (1); thereby making the dust concentration in each area in the dust duct (1) tend to be the same, thereby preventing the dust particles from locally exploding in the dust duct (1) due to uneven concentration; at the same time, the air flow ejected from the first rotating wind hood (6a) and the second rotating wind hood (6b) can diffuse the atomized aqueous solution or the atomized static elimination liquid sprayed from the first atomizing nozzle (3a) and the second atomizing nozzle (3b).

7. The operating method of the dust duct explosion-proof device in the coking process according to claim 5, characterized in that: When the first fan (4a) is running at rated power, if the velocity of the air flow in the first air duct (5a) detected by the first anemometer (67) is too slow, it means that the pressure in the dust duct (1) is too high or the power of the first fan (4a) is too low. At this time, the control system controls the power of the first fan (4a) to increase, thereby increasing the flow rate of the air flow in the first air duct (5a), so that the pressure in the first rotating wind cover (6a) is much greater than the pressure in the dust duct (1), so that the air flow can flow smoothly into the dust duct (1), and the air flow with dust in the dust duct (1) is cleaned. Dilute and reduce the dust concentration in the dust duct (1); if the velocity of the air flow in the first air duct (5a) detected by the first anemometer (67) is too fast, it means that the pressure in the dust duct (1) is too low or the power of the first fan (4a) is too high. At this time, the control system controls the power of the first fan (4a) to reduce, thereby reducing the flow rate of the air flow in the first air duct (5a), so that the velocity of the air flow in the first air duct (5a) detected by the first anemometer (67) tends to a normal value. During this process, the pressure in the first rotating wind hood (6a) is always greater than the pressure in the dust duct (1).

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