Dust pipeline explosion-proof device in coking process and working method

Abstract

The invention discloses a dust pipeline explosion-proof device in the coking process and a working method. The dust pipeline explosion-proof device comprises a dust pipeline, and a first atomizer and a second atomizer are arranged on the two sides of the dust pipeline; the first atomizer and the second atomizer are vertically communicated with the dust pipeline through the spraying end of a tubular first atomizing nozzle and the spraying end of a tubular second atomizing nozzle respectively; the liquid inlet end of the first atomizer and the liquid inlet end of the second atomizer are communicated with a first aqueous solution supply pipe and a second aqueous solution supply pipe respectively; through a first atomizer, a second atomizer, a first atomizing nozzle and a second atomizing nozzle, an aqueous solution or electrostatic elimination liquid can be more uniformly sprayed to each area in a dust pipeline after being atomized, dust can be effectively prevented from exploding in a dust airflow pipe, and through a first rotating fan cover and a second rotating fan cover, the dust can be effectively prevented from exploding. And the atomized aqueous solution or the atomized static eliminating liquid is more uniformly distributed in each area in the dust airflow pipe.

Description

Technical Field

[0001] The invention relates to the technical field of raw coal processing, and more specifically to a dust pipeline explosion-proof device and a working method in a coking process. Background Art

[0002] During the coking process of raw coal in a coking plant, a large amount of dust and flammable and explosive gases will be generated. If the dust or flammable and explosive gases reach a certain concentration, they are prone to explosion when encountering a fire source or static electricity, causing serious damage to personnel and equipment. Existing explosion-proof devices eliminate static electricity by spraying aqueous solution into the pipeline, but the aqueous solution is still unevenly distributed after entering the pipeline, resulting in static electricity and fire sources in some areas, thereby causing explosion risks. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a dust duct explosion-proof device and a working method for a coking process. Through the first atomizer and the second atomizer and the first atomizing nozzle and the second atomizing nozzle, the aqueous solution or the static eliminator can be sprayed more evenly to each area in the dust duct after atomization. At the same time, through the first fan and the second fan and the first rotating wind cover and the second rotating wind cover, 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, the atomized aqueous solution or the atomized static eliminator sprayed from the spray end of the first atomizing nozzle and the second atomizing nozzle is further distributed more evenly 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 by the first anemometer and the second anemometer respectively, so as to adjust the power of the first fan and the second fan, and ensure that the air flow generated by the first fan and the second fan can always flow into the dust duct, and dilute the air flow with dust in the dust duct.

[0004] Technical solution: To achieve the above-mentioned purpose, a dust duct explosion-proof device and a working method for a coking process of the present invention include a dust duct, and a first atomizer and a second atomizer are arranged on both sides of the dust duct. The first atomizer and the second atomizer are respectively connected to the dust duct vertically through the spray end of a tubular first atomizing nozzle and the spray end of a tubular second atomizing nozzle; the liquid inlet end of the first atomizer and the liquid inlet end of the second atomizer are respectively connected to a first aqueous solution supply pipe and a second aqueous solution supply pipe.

[0005] Furthermore, a first wind diffusion component and a second wind diffusion component are respectively arranged on the upper and lower sides of the dust duct.

[0006] Furthermore, the first wind diffusion component includes a first blower, a first air duct and a first rotating air hood, the middle portion of the first air duct is vertically connected to the upper wall of the dust duct, the air outlet end of the first blower is connected to the upper end of the first air duct, the lower end of the first air duct passes through the wall of the dust duct and extends into the interior of the dust duct, and the first rotating air hood is rotationally connected and connected to one end of the first air duct extending into the dust duct; the second wind diffusion component includes a second blower, a second air duct and a second rotating air hood, the middle portion of the second air duct is vertically connected to the upper wall of the dust duct, the air outlet end of the second blower is connected to the upper end of the second air duct, the lower end of the second air duct passes through the wall of the dust duct and extends into the interior of the dust duct, and the second rotating air hood is rotationally connected and connected to one end of the second air duct extending into the dust duct.

[0007] Furthermore, the first rotating wind hood includes a diffusion tube and an end wall, the end wall is integrally connected to the upper end of the diffusion tube, a plurality of diffusion holes are hollowed out and distributed in a circular array on the circumferential surface of the diffusion tube, and the plurality of diffusion holes constitute a diffusion hole group, the inner wall of the lower end of the diffusion tube 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 duct, a plurality of circles of diffusion holes are hollowed out and distributed in a circular array on the end wall, a rotating shaft is coaxially integrally provided at the center of the end wall, the lower end of the rotating shaft extends into the tube cavity of the first air duct, and a plurality of pneumatic blades are connected to the rotating shaft through a plurality of connecting rods distributed in a circular array; when the air flow in the first air duct hits each pneumatic blade, each pneumatic blade rotates around the axis of the rotating shaft together with the diffusion tube and the end wall.

[0008] Furthermore, a first anemometer is installed at the lower end of the rotating shaft of the first rotating wind shield. The first anemometer is located in the tube cavity of the first air duct. The first anemometer can detect the flow rate of the air flow in the first air duct.

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

[0010] Furthermore, the rotation direction of the rotating part of the first anemometer is perpendicular to the rotation direction of each wind-driven blade around the rotation axis.

[0011] Furthermore, when the dust concentration in the dust duct reaches the warning value, the first atomizer and the second atomizer are started, so that the spray end of the first atomizing nozzle and the spray end of the second atomizing nozzle simultaneously spray the atomized aqueous solution or the atomized static eliminating liquid into the dust duct to reduce the static electricity on the pipe wall inside the dust duct. At the same time, the first fan and the second fan are started, so that the air flow generated by the first fan and the second fan is discharged into the dust duct, and the air flow with dust in the dust duct is diluted to reduce the dust concentration in the dust duct. In this process, the air flow generated by the first fan and the second fan flows into the first air duct and the second air duct respectively, and is discharged into the dust duct from the first rotating wind hood and the second rotating wind hood respectively. When the air flow in the first air duct flows into the first rotating wind hood, the force of the air flow flowing out of the first air duct on each pneumatic fan blade can The pneumatic fan blades are made to rotate around the axis of the rotating shaft with the diffusion tube and the end wall at the same time, and the air flow is changed from the original straight air flow to the vortex air flow, and is uniformly ejected from the diffusion holes opened on the diffusion tube and the end wall into the dust duct, and can be ejected from each diffusion hole to each area in the dust duct; similarly, the air flow flowing from the second air duct into the second rotating wind hood can be uniformly ejected from the diffusion holes opened on the diffusion tube and the end wall into the dust duct, and can be ejected from each diffusion hole to each area in the dust duct; thereby making the dust concentration in each area in the dust duct tend to be the same, thereby preventing dust particles from locally exploding in the dust duct due to uneven concentration; at the same time, the air flow ejected from the first rotating wind hood and the second rotating wind hood can diffuse the atomized aqueous solution or atomized static electricity eliminating liquid sprayed from the first atomizing nozzle and the second atomizing nozzle.

[0012] Furthermore, when the first fan is operating at rated power, if the flow rate of the air flow in the first air duct detected by the first anemometer is too slow, it means that the pressure in the dust duct is too high or the power of the first fan is too low. At this time, the control system controls the power of the first fan to increase, thereby increasing the flow rate of the air flow in the first air duct, so that the pressure in the first rotating wind hood is much greater than the pressure in the dust duct, so that the air flow can flow smoothly into the dust duct, dilute the dust-carrying air flow in the dust duct, and reduce the dust concentration in the dust duct; if the flow rate of the air flow in the first air duct detected by the first anemometer is too fast, it means that the pressure in the dust duct is too low or the power of the first fan is too high. At this time, the control system controls the power of the first fan to decrease, thereby reducing the flow rate of the air flow in the first air duct, so that the flow rate of the air flow in the first air duct detected by the first anemometer tends to a normal value. In this process, the pressure in the first rotating wind hood is always greater than the pressure in the dust duct.

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

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

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

[0016] Figure 3 It is a schematic structural diagram of the first wind diffusion assembly of the present invention;

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

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

[0019] As attached Figures 1 to 4 As shown, a dust pipeline explosion-proof device and working method for a coking process include a dust pipeline 1, in which a dust concentration detector is arranged. The dust concentration detector can monitor the dust in the dust pipeline 1 in real time. The dust concentration detector is connected to the control system by wireless connection, such as Figure 1As shown, a first atomizer 2a and a second atomizer 2b are arranged 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 respectively 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; 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 electricity 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 first wind diffusion component 7a and the second wind diffusion component 7b are respectively provided on the upper and lower sides of the dust duct 1; Figure 3 The first wind diffusion component 7a shown includes a first air supply fan 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 supply 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, and the first rotating air cover 6a is rotationally connected and connected to one end of the first air duct 5a extending into the dust duct 1; the second wind diffusion component 7b includes a second air supply fan 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 supply 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, and the second rotating air cover 6b is rotationally connected and connected to one end of the second air duct 5b extending into the dust duct 1; when a dust duct 1 is provided 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. 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 wind duct 5a and the second wind 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 dust-carrying air flow 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] like Figure 2 As shown, the intersection of the axis line 9 of the first air duct 5a and the second air duct 5b and the axis line 10 of the first atomizing nozzle 3 and the second atomizing nozzle 3 is located on the axis of the dust duct 1, and the axis line 9 of the first air duct 5a and the second air duct 5b, the axis line 10 of the first atomizing nozzle 3 and the second atomizing nozzle 3 and the axis of the dust duct 1 are perpendicular to each other, further ensuring that the first rotating wind hood 6a and the second rotating wind hood 6b can evenly disperse the atomized aqueous solution mist or static electricity eliminating liquid mist sprayed from the spray end of the first atomizing nozzle 3a and the spray end of the second atomizing nozzle 3b to all areas in the dust duct 1.

[0022] Because in the dust duct explosion-proof device and working method of the coking process of the present invention, the structures of the first rotating wind cover 6a and the second rotating wind cover 6b are the same, the first rotating wind cover 6a is taken as an example to describe the basic structures of the first rotating wind cover 6a and the second rotating wind cover 6b;

[0023] like Figure 4 As shown, the first rotating wind cover 6a includes a diffusion tube 61 and an end wall 68, the end wall 68 is integrally connected to the upper end of the diffusion tube 61, a plurality of diffusion holes 63 are hollowed out and distributed in a circumferential array on the circumferential surface of the diffusion tube 61, and the plurality of diffusion holes constitute a diffusion hole group, the inner wall of the lower end of the diffusion tube 61 is coaxially connected to the outer wall of the rotating device 66, the inner wall of the rotating device 66 is connected to the outer wall of the first air duct 5a, and a plurality of circles of diffusion holes 63 are hollowed out and distributed in a circumferential array on the end wall 68, and a rotating shaft 62 is integrally provided coaxially at the center of the end wall 68, and the rotating shaft 62 is The lower end extends into the tube cavity of the first air duct 5a, and a plurality of pneumatic 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 duct 5a hits the pneumatic blades 64, the pneumatic blades 64 rotate around the axis of the rotating shaft 62 together with the diffusion tube 61 and the end wall 62. At this time, the air flow flowing from the first air duct 5a into the first rotating wind cover 6a can evenly flow out from the diffusion holes opened on the diffusion tube 61 and the end wall 68, and evenly spray to each area inside the dust duct 1.

[0024] A working method of a dust duct explosion-proof device for a coking process of the present invention: when a dust concentration detector arranged in the dust duct 1 detects that the dust concentration in the dust duct 1 reaches a warning value, the dust concentration detector sends a warning signal to the control system. After receiving the warning signal, the control system controls the start-up of the first atomizer 2a and the second atomizer 2b, so that the aqueous solution or static elimination liquid supplied from the first aqueous solution supply pipe 8a and the second aqueous solution supply pipe 8b to 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 end of the first atomizing nozzle 3a and the spray end of the second atomizing nozzle 3b simultaneously spray the dust duct 1 Spraying atomized aqueous solution or atomized static eliminating liquid in the dust duct 1, thereby reducing static electricity on the inner wall of the dust duct 1, preventing dust particles from rubbing against the inner wall of the dust duct 1 to generate static electricity, and further preventing dust from exploding in the dust duct 1. At the same time, the control system controls the start-up of the first fan 4a and the second fan 4b, so that the airflows generated by the first fan 4a and the second fan 4b are respectively discharged from the first air duct 5a and the second air duct 5b into the dust duct 1, so that the airflow dilutes the airflow with dust in the dust duct 1, reducing the dust concentration in the dust duct 1, so that the dust particles in the dust duct 1 do not meet the explosion conditions due to the concentration, and thus cannot explode in the dust duct 1;

[0025] 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 hood 6a and the second rotating wind hood 6b. When the air flow in the first air duct 5a flows into the first rotating wind hood 6a, when the air flow flowing out of the first air duct 5a hits each pneumatic blade 64, the force of the air flow flowing out of the first air duct 5a on each pneumatic blade 64 can make each pneumatic blade 64 rotate around the axis of the rotating shaft 62 with the diffusion tube 61 and the end wall 68 at the same time. Under the action of each pneumatic blade 64, the air flow flowing from the first air duct 5a into the first rotating wind hood 6a changes from the original straight air flow to a vortex air flow, and can be evenly discharged from each diffusion tube 61 and the end wall 68. The air flows from the second air duct 5b into the second rotating hood 6b, and can flow from each diffusion hole 63 to each area in the dust duct 1; when the air flow in the second air duct 5b flows into the second rotating hood 6b, when the air flow flowing out of the second air duct 5b hits each pneumatic blade 64, the force of the air flow flowing out of the second air duct 5b on each pneumatic blade 64 can make each pneumatic blade 64 rotate around the axis of the rotating shaft 62 with the diffusion tube 61 and the end wall 68 at the same time. Under the action of each pneumatic blade 64, the air flow flowing from the second air duct 5b into the second rotating hood 6b changes from the original straight air flow to a vortex air flow, and can be evenly ejected from each diffusion hole 63 opened on the diffusion tube 61 and the end wall 68 into the dust duct 1, and can be ejected from each diffusion hole 63 to each area in the dust duct 1;

[0026] Thereby, the dust concentration in each area of ​​the dust duct 1 tends to be the same, thereby preventing the dust particles from exploding locally 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 atomized static eliminating liquid sprayed from the first atomizing nozzle 3a and the second atomizing nozzle 3b, so that the aqueous solution mist or static eliminating liquid 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 evenly diffused to each area in the dust duct 1, thereby effectively eliminating the static electricity in each area in the dust duct 1, thereby avoiding the dust explosion caused by static electricity generated by the friction between the dust particles and the cavity wall of the dust duct 1, and at the same time, the aqueous solution mist can also effectively avoid the occurrence of fire sources in the dust duct 1, thereby avoiding dust explosions caused by fire sources.

[0027] In the above-mentioned first embodiment, although the control system can reduce the dust concentration in the dust duct 1 and eliminate the static electricity on the inner wall of the dust duct 1 by controlling the first atomizer 2a, the second atomizer 2b, the first fan 4a and the second fan 4b, the dust concentration of the dust-carrying airflow in the dust duct is also changing at any time during the coking process, which will cause the pressure in the dust duct 1 to be in a changing state at all times. Therefore, when the pressure in the dust duct 1 is too high, if the first fan 4a and the second fan 4b are still running at rated power at this time, the air flow generated by the first fan 4a and the second fan 4b may not be able to diffuse into the dust duct 1 through the first rotating wind hood 6a and the second rotating wind hood 6b. When the pressure in the dust duct 1 is too low, if the first fan 4a and the second fan 4b are still running at rated power at this time, the excessive energy consumption of the first fan 4a and the second fan 4b will be invalid. In response to the above problems, the present scheme proposes a second embodiment as follows.

[0028] In a second embodiment of a working method of a dust duct explosion-proof device in a coking process of the present invention:

[0029] like Figure 4 As shown, a first anemometer 67 is installed at the lower end of the rotating shaft 62 of the first rotating wind cover 6a, and the first anemometer 67 is located in the tube cavity of the first wind duct 5a. The first anemometer 67 can detect the flow rate of the air flow in the first wind duct 5a; a second anemometer is installed at the lower end of the rotating shaft 62 of the second rotating wind cover 6b, and the second anemometer is located in the tube cavity of the second wind duct 5b. The second anemometer can detect the flow rate of the air flow in the second wind duct 5b, and the rotation directions of the first anemometer 67 and the second anemometer rotating parts are consistent with each other. The wind-driven blades 64 are perpendicular to the rotation direction of the rotating shaft 62; the first anemometer 67 and the second anemometer are both connected to the control system by wireless connection. At the same time, compared with the first embodiment, the control system in the second embodiment can not only control the start and stop of the first fan 4a and the second fan 4b, but also can further adjust the power of the first blower 4a and the second fan 4b according to the flow rate of the air flow in the first air duct 5a and the second air duct 5b respectively measured by the first anemometer 67 and the second anemometer.

[0030] In a second embodiment, a working method of a dust duct explosion-proof device for a coking process of the present invention is as follows: when a dust concentration detector provided in the dust duct 1 detects that the dust concentration in the dust duct 1 reaches a warning value, the dust concentration detector sends a warning signal to the control system. After receiving the warning signal, the control system controls the start-up of the first atomizer 2a and the second atomizer 2b, so that the aqueous solution or static elimination liquid supplied from the first aqueous solution supply pipe 8a and the second aqueous solution supply pipe 8b to 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 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 eliminating liquid into the dust duct 1, thereby reducing the static electricity on the inner wall of the dust duct 1, preventing the dust particles from rubbing against the inner wall of the dust duct 1 to generate static electricity, and further preventing the dust from exploding in the dust duct 1. At the same time, the control system controls the start-up of 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 wind cover 6a and the second rotating wind cover 6b through the first wind duct 5a and the second wind duct 5b respectively, and passes through the first rotating wind cover 6a and the second rotating wind cover 6b. The wind hood 6a and the second rotating wind hood 6b evenly spray to each area in 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 can make the dust concentration in each area in the dust duct 1 tend to be the same, thereby preventing the dust particles from exploding locally in the dust duct 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 duct 5a and the second air duct 5b respectively, and is discharged into the dust duct 1. In this process, the first anemometer 67 detects the air flow in the first air duct 5a. The flow rate of the air flow, when the first fan 4a is running at rated power, if the flow rate 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 hood 6a is greater than the pressure in the dust duct 1, so that the air flow can flow smoothly into the dust duct 1, dilute the air flow with dust in the dust duct 1, 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. In this process, the pressure in the first rotating wind hood 6a is always greater than the pressure in the dust duct 1, so that the air flow can flow smoothly into the dust duct 1, dilute the air flow with dust in the dust duct 1, and reduce the dust concentration in the dust duct 1;

[0031] Similarly, when the second fan 4b is running at rated power, if the second anemometer detects that the flow rate of the air flow in the second air duct 5b is too slow, it means that the pressure in the dust duct 1 is too high or the power of the second fan 4b is too low. At this time, the control system controls the power of the second fan 4b to increase, thereby increasing the flow rate of the air flow in the second air duct 5b, so that the pressure in the second rotating wind hood 6b is greater than the pressure in the dust duct 1, so that the air flow can flow smoothly into the dust duct 1, dilute the air flow with dust in the dust duct 1, and reduce the dust concentration in the dust duct 1; if the second anemometer detects that the second fan 4b is too low, the control system controls the power of the second fan 4b to increase, thereby increasing the flow rate of the air flow in the second air duct 5b, and making the pressure in the second rotating wind hood 6b greater than the pressure in the dust duct 1. If the flow rate of the air flow in the second air duct 5b is too fast, it means that the pressure in the dust duct 1 is too low or the power of the second fan 4b is too high. At this time, the control system controls the power of the second fan 4b to reduce, thereby reducing the flow rate of the air flow in the second air duct 5b, so that the flow rate of the air flow in the second air duct 5b detected by the second anemometer tends to a normal value. In this process, the pressure in the second rotating wind hood 6b is always greater than the pressure in the dust duct 1, so that the air flow can flow smoothly into the dust duct 1, dilute the dust-carrying air flow in the dust duct 1, and reduce the dust concentration in the dust duct 1.

[0032] The above are preferred embodiments of the present invention. It should be pointed out that a person skilled in the art may make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A dust pipe explosion-proof device for a coking process, characterized in that: The invention comprises a dust pipe (1), wherein a first atomizer (2a) and a second atomizer (2b) are arranged on both sides of the dust pipe (1); the first atomizer (2a) and the second atomizer (2b) are respectively connected vertically to the dust pipe (1) through the spray end of a tubular first atomizing nozzle (3a) and the spray end of a tubular second atomizing nozzle (3b); and 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).

2. The dust pipe explosion-proof device for a coking process according to claim 1, characterized in that: 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.

3. The dust pipe explosion-proof device for a coking process according to claim 2, characterized in that: The first wind diffusion component (7a) comprises a first air blower (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 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 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 air supply 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 air supply 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 rotationally connected to one end of the second air duct (5b) extending into the dust duct (1).

4. The dust pipe explosion-proof device for a coking process according to claim 3, characterized in that: The first rotating wind cover (6a) comprises a diffusion cylinder (61) and an end wall (68), wherein the end wall (68) is integrally connected to the upper end of the diffusion cylinder (61), and a plurality of diffusion holes (63) are hollowed out and distributed in a circumferential array on the circumferential surface of the diffusion cylinder (61), and the plurality of diffusion holes constitute a diffusion hole group, and the inner wall of the lower end of the diffusion cylinder (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), and the end wall (68) is hollowed out and distributed in a circumferential array. A plurality of circles of diffusion holes (63) are provided, and a rotating shaft (62) is coaxially arranged 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), and 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 (62).

5. The dust pipe explosion-proof device for a coking process according to claim 4, 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).

6. The dust pipe explosion-proof device for a coking process according to claim 5, 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 (3) and the second atomizing nozzle (3) 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 (3) and the second atomizing nozzle (3) and the axis of the dust duct (1) are perpendicular to each other.

7. The dust pipe explosion-proof device for a coking process according to claim 5, 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).

8. The working method of the dust pipe explosion-proof device in the coking process according to claim 1 is characterized in that: When the dust concentration in the dust duct (1) reaches a 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 eliminating 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) to dilute the dust-carrying airflow in the dust duct (1), thereby reducing the dust concentration in the dust duct (1). In this process, the airflows generated by the first fan (4a) and the second fan (4b) flow into the first duct (5a) and the second duct (5b) respectively, and are discharged into the dust duct (1) from the first rotating hood (6a) and the second rotating hood (6b) respectively. When the airflow in the first duct (5a) flows into the first rotating hood (6a), the force of the airflow flowing out of the first duct (5a) on each pneumatic fan blade (64) can be The pneumatic fan blades (64) are caused to rotate around the axis of the rotating shaft (62) with the diffuser tube (61) and the end wall (68) at the same time, and the air flow is changed from the original linear air flow to a vortex air flow, and is uniformly ejected from the diffuser holes (63) opened on the diffuser tube (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 uniformly ejected from the diffuser holes (63) opened on the diffuser tube (61) and the end wall (68) Each diffusion hole (63) of the dust duct (1) is sprayed into the dust duct (1), and can be sprayed from each diffusion hole (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 dust particles from locally exploding in the dust duct (1) due to uneven concentration; at the same time, the air flow sprayed from the first rotating wind hood (6a) and the second rotating wind hood (6b) can diffuse the atomized aqueous solution or atomized static elimination liquid sprayed from the first atomizing nozzle (3a) and the second atomizing nozzle (3b).

9. The working method of the dust pipe 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. dilution, thereby reducing 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 decrease, 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).

Images