Dedusting and cooling device for gas containing high-temperature particles

Abstract

The utility model discloses a dust-removing and cooling device for gas containing high-temperature particles, which comprises a spiral separator, a dust-removing pipeline, a dust-removing pipeline, a dust-removing pipeline, a dust-removing pipeline and a dust-removing pipeline, and is characterized in that a spiral blade is arranged in the spiral separator; the high-temperature cyclone separation area is communicated with the tail end of the spiral separator and is of a diameter-expanded structure along the dust removal wind direction; the particle settling area is communicated with the tail end of the high-temperature cyclone separation area, and an inlet in the front end of the particle settling area extends into the diameter-expanded structure in the high-temperature cyclone separation area; and the exhaust area is arranged at the tail end of the particle settling area, and a cooling pipe for communicating the tail end partition plate of the particle settling area with the front end partition plate of the exhaust area is arranged between the tail end partition plate of the particle settling area and the front end partition plate of the exhaust area. Compared with the prior art, the device has the beneficial effects that the occupied space is small by adopting an axial and transverse mounting mode, and the effects of multi-stage dust filtration and spark elimination are realized by adopting cyclone and sedimentation modes, so that a guarantee is provided for subsequent cooling and fine dust removal.

Description

Technical Field

[0001] The utility model belongs to the field of dust removal, and in particular relates to a dust removal and cooling device for gas containing high-temperature particles. Background Art

[0002] During the metal smelting process, a large amount of high-temperature smoke and dust will be generated, which needs to be filtered in the dust collector before being discharged in compliance with the emission standards. Before the high-temperature smoke and dust enters the dust collector, it needs to be cooled down and the high-temperature particles need to be filtered out to ensure safe entry into the dust collector. The current traditional solutions are as follows:

[0003] Use water cooling: The pipe is made into a U-shape or S-shape and immersed in a circulating water pool for cooling. The airflow needs to flow along the U or S pipe in a coil, which has great resistance. The pipe is easily clogged by dust. It is necessary to invest in a water pool and a water circulation system. Before entering the water-cooled cooler, a cyclone dust collector needs to be added to filter out particulate matter.

[0004] Adopt vertical air cooling layout: multiple tubes are arranged in a square or rectangular layout, with a hopper at the bottom. Dust-laden gas enters from the hopper and passes through the inside of the cooling tube. An axial flow fan is installed on the side of the cooling tube to blow the outer surface of the cooling tube strongly to achieve the purpose of cooling. The top of the cooling tube is the air outlet. After the dust-laden gas enters the hopper in the cooling area, large particles mainly fall into the hopper by gravity, and fine dust is adsorbed into multiple tubes. It is a countercurrent movement mode, resulting in large operating resistance. At the same time, this vertical layout method requires ground space. Utility Model Content

[0005] Details of one or more embodiments of the present invention are set forth in the following drawings and description to make other features, objects, and advantages of the present application more readily apparent.

[0006] The utility model provides a dust removal and cooling device for gas containing high-temperature particulate matter, which occupies a small space by adopting an axially transverse installation method, and realizes multi-stage dust filtration and spark elimination by means of cyclones and sedimentation, thereby providing guarantee for subsequent cooling and fine dust removal.

[0007] The utility model discloses a gas dust removal and cooling device containing high-temperature particles, comprising:

[0008] The spiral separator is provided with spiral blades and is used to be coaxially connected with the dust removal pipeline transversely;

[0009] A high-temperature cyclone separation zone is connected to the end of the spiral separator and has an expanded diameter structure along the dust removal wind direction;

[0010] A particle settling zone is connected to the end of the high-temperature cyclone separation zone, and the front entrance of the particle settling zone extends into the expanded diameter structure in the high-temperature cyclone separation zone;

[0011] The exhaust zone is arranged at the end of the particle settling zone, and a cooling pipe is arranged between the end baffle of the particle settling zone and the front baffle of the exhaust zone to connect the two.

[0012] In some embodiments, the spiral blades in the spiral separator are provided in plurality, and the pitches between adjacent spiral blades are shortened along the dust removal wind direction.

[0013] In some embodiments, the cooling pipe is disposed between a plurality of end baffles distributed in a row in the particle settling zone and a front baffle of the exhaust zone.

[0014] In some embodiments, the cooling pipe is disposed outside the fin.

[0015] In some embodiments, the spiral separator, the high-temperature cyclone separation zone, the particle settling zone, and the exhaust zone are all transversely coaxially arranged.

[0016] In some embodiments, a guide cover is disposed below the cooling pipe; a fan port is disposed above the guide cover; and the guide cover is in an expanding diameter structure from the fan port toward the cooling pipe.

[0017] In some embodiments, it further comprises:

[0018] A primary settling pipe, arranged below the high-temperature cyclone separation zone;

[0019] A secondary settling pipe is arranged below the particle settling area;

[0020] The collecting main pipe is connected with the primary settling pipe and the secondary settling pipe.

[0021] In some embodiments, a switch valve is provided below the collecting main pipe.

[0022] In some embodiments, the switch valve comprises:

[0023] The inner tube is connected with the collecting main tube and is provided with an inner valve at its opening; a gravity rod is hinged on the side wall of the inner tube; one end of the gravity rod on the inner tube is hinged with the inner valve, and the other end is provided on the counterweight block;

[0024] The outer tube is sleeved on the outer part of the lower end of the inner tube, and an outer valve is provided at its opening; a fixing frame is extended downward on the side wall of the outer tube, and a gravity rod is hinged on the fixing frame; one end of the gravity rod on the outer tube is hinged to the outer valve, and the other end is provided on the counterweight block.

[0025] In some embodiments, it further comprises:

[0026] The upper limit rod and the lower limit rod are respectively arranged at the upper and lower ends of the gravity rod to limit the deflection angles of the inner valve and the outer valve.

[0027] Compared with the cooling device required by the traditional metal smelting dust removal system, the multi-stage dust filtration function of this device has the following advantages:

[0028] Small space occupation and low resistance: The dust-laden flue gas of the device passes through the center coaxially with the dust removal main pipeline, and can be installed at high altitude without occupying ground space. Traditional cooling devices are generally installed vertically and need to occupy ground space. At the same time, the coaxial installation without bends reduces the running resistance of the equipment, which can save energy for the entire dust removal system. The inlet and outlet of the traditional cooling device are installed at 90 degrees, and the running resistance is large.

[0029] It has both multi-stage dust filtration and spark extinguishing functions: the spiral separator is composed of multi-stage blades with different pitches. Combined with the high-temperature cyclone separation area, it can realize the coarse particle dust filtration and spark extinguishing functions. The fine particle dust in the particle sedimentation area further collides with the partition in the particle sedimentation area, and the fine particle dust is filtered under the action of gravity and turbulence. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0031] Figure 1 It is a structural schematic diagram of the utility model.

[0032] Figure 2 It is a structural schematic diagram of the switch valve of the utility model.

[0033] Figure 3 It is a structural schematic diagram of the fin of the utility model.

[0034] Figure 4 It is a structural schematic diagram of the spiral blade of the utility model.

[0035] Description of the drawings: spiral separator 1, spiral blades 2, high-temperature cyclone separation zone 3, particle sedimentation zone 4, exhaust zone 5, partition 6, cooling pipe 7, intermediate retaining plate frame 8, guide cover 9, fan port 10, primary sedimentation pipe 11, secondary sedimentation pipe 12, collecting main pipe 13, switch valve 14, inner pipe 15, outer pipe 16, inner valve 17, outer valve 18, gravity rod 19, counterweight block 20, upper limit rod 21, lower limit rod 22, fixing frame 23, fin 24. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is described and illustrated in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. Based on the embodiments provided by the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0037] Obviously, the drawings described below are only some examples or embodiments of the utility model. For ordinary technicians in this field, the utility model can also be applied to other similar scenarios based on these drawings without creative work. In addition, it can be understood that although the efforts made in this development process may be complicated and lengthy, for ordinary technicians in this field related to the content disclosed by the utility model, some changes in design, manufacturing or production based on the technical content disclosed by the utility model are just conventional technical means, and should not be understood as the content disclosed by the utility model is insufficient.

[0038] Reference to "embodiments" in the present invention means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in the present invention may be combined with other embodiments without conflict.

[0039] A device for removing dust and cooling gas containing high-temperature particulate matter, comprising:

[0040] The spiral separator 1 is provided with a spiral blade 2 and is used to be coaxially connected with the dust removal pipeline transversely;

[0041] The high-temperature cyclone separation zone 3 is connected to the end of the spiral separator 1 and has an expanded diameter structure along the dust removal wind direction;

[0042] The particle settling area 4 is connected to the end of the high-temperature cyclone separation area 3, and the front entrance of the particle settling area 4 extends into the expanded diameter structure in the high-temperature cyclone separation area 3;

[0043] The exhaust zone 5 is arranged at the end of the particle settling zone 4 , and a cooling pipe 7 is arranged between the end baffle 6 of the particle settling zone 4 and the front end baffle 6 of the exhaust zone 5 to connect the two.

[0044] The gas containing high-temperature particles enters the spiral separator 1 through the dust removal pipeline to form a cyclone wind, and under the action of centrifugal force, the particles are pushed along the inner wall of the spiral separator 1 to the high-temperature cyclone separation zone 3. Since the front entrance of the particle settling zone 4 extends to the high-temperature cyclone separation zone 3, Figure 1 It can be found that the particulate matter will eventually be thrown between the front entrance of the high-temperature cyclone separation zone 3 and the particle settling zone 4 and settle by gravity after being blocked. In the above links, the coarse dust particles and sparks have been basically filtered and eliminated. When the gas further enters the particle settling zone 4, under the airflow disturbance of the rotating airflow and the blocking effect of the partition 6, some fine dust particles will be blocked, filtered and settled by gravity. When the gas enters the cooling pipe again, the aforementioned multi-stage filtration can not only effectively reduce the erosion inside the cooling pipe, but also effectively ensure the service life of the dust removal bag set in the subsequent exhaust area, thereby greatly improving the efficiency of the entire dust removal system.

[0045] In some embodiments, the spiral blades 2 in the spiral separator 1 are arranged in a plurality, and the pitch between adjacent spiral blades 2 along the dust removal wind direction is shortened. Figure 4 As shown, it includes at least three stages of spiral blades 2, among which spiral blade A has the largest pitch and is used to change the direction of airflow; spiral blade B has the second largest pitch and is used to increase the rotation speed of dust-containing gas; spiral blade C has the smallest pitch and further increases the rotation speed of the gas, thereby achieving the effect of extinguishing sparks and throwing them onto the inner wall of the high-temperature cyclone separation area 3.

[0046] In some embodiments, the cooling pipe 7 is arranged between a plurality of end baffles 6 of the particle settling area 4 and a front baffle 6 of the exhaust area 5 and arranged in a row. The flow is divided by a plurality of cooling pipes, so as to achieve the effect of rapid cooling. Furthermore, the cooling pipe 7 is provided outside the fin 24 to increase the heat dissipation area. If the cooling pipe is too long, an intermediate retaining plate frame 8 can be appropriately added in the middle for rigid support.

[0047] At the same time, a deflector 9 can be provided below the cooling pipe 7; a fan port 10 can be provided on the deflector 9; and the deflector is in a diameter-expanding structure from the fan port 10 toward the cooling pipe 7. In the specific setting, a corresponding temperature sensing unit can be added to monitor the temperature, so as to control the start and stop of the corresponding fan.

[0048] Specifically, the spiral separator 1, the high temperature cyclone separation zone 3, the particle settling zone 4 and the exhaust zone 5 are all arranged transversely and coaxially, thereby forming a straight structure that can be installed on the top of the factory, thereby reducing the floor space and reducing the resistance during the airflow processing process.

[0049] In some embodiments, it also includes:

[0050] The first settling pipe 11 is arranged below the high-temperature cyclone separation zone 3;

[0051] The secondary settling pipe 12 is arranged below the particle settling area 4;

[0052] The collecting main pipe 13 is connected to the primary settling pipe 11 and the secondary settling pipe 12 .

[0053] Specifically, a switch valve 14 is provided below the collecting main pipe 13 so as to discharge the collected dust regularly.

[0054] In some embodiments, the switch valve 14 adopts a double force settling opening logic mode, so as to ensure that dust is not generated as much as possible during the external discharge process, and can be automatically opened and closed by gravity to reduce energy consumption. Specifically, the switch valve 14 includes:

[0055] The inner tube 15 is connected to the collecting main tube 13 and is provided with an inner valve 17 at its opening; a gravity rod 19 is hinged on the side wall of the inner tube 15; one end of the gravity rod 19 on the inner tube 15 is hinged to the inner valve 17, and the other end thereof is provided on a counterweight block 20;

[0056] The outer tube 16 is sleeved on the outer part of the lower end of the inner tube 15, and an outer valve 18 is provided at its opening; a fixing frame 23 is extended downwardly on the side wall of the outer tube 16, and a gravity rod 19 is hinged on the fixing frame 23; one end of the gravity rod 19 on the outer tube 16 is hinged to the outer valve 18, and the other end is provided on the counterweight block 20.

[0057] Its opening and closing logic is:

[0058] When the dust accumulated in the inner valve 17 is heavier than the weight of the inner valve 17 and the corresponding counterweight 20, it will automatically fall into the outer valve 18; when the dust accumulated in the outer valve 18 is heavier than or equal to the weight of the outer valve 18 and the corresponding counterweight 20, it will be discharged to the outside; since the above processes are performed alternately, the inner valve 17 and the outer valve 18 will always maintain a locking and dust-discharging action, thereby avoiding dust.

[0059] At the same time, considering the reliability of the inner valve 17 and the outer valve 18 when they are closed, a corresponding upper limit rod 21 and a lower limit rod 22 are further provided, and are respectively provided at the upper and lower ends of the gravity rod 19 to limit the deflection angle of the inner valve 17 and the outer valve 18. This prevents the defect of being difficult to close due to excessive deflection angle.

[0060] In summary, the device consists of four core components: spiral separator 1, high-temperature cyclone separation zone 3, particle settling zone 4, and cooling pipe 7. By organically combining the four parts, the functions of extinguishing sparks, removing coarse dust particles, removing some fine dust particles, and reducing the temperature of dust-containing gas are achieved. At the same time, the whole device is horizontally installed and directly connected coaxially with the dust removal pipeline, which does not need to occupy the ground area and can effectively reduce the air flow resistance at the same time, greatly reducing energy consumption.

[0061] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dust removal and cooling device for gas containing high-temperature particulate matter, characterized in that: include: The spiral separator is provided with spiral blades and is used to be coaxially connected with the dust removal pipeline transversely; A high-temperature cyclone separation zone is connected to the end of the spiral separator and has an expanded diameter structure along the dust removal wind direction; A particle settling zone is connected to the end of the high-temperature cyclone separation zone, and the front entrance of the particle settling zone extends into the expanded diameter structure in the high-temperature cyclone separation zone; The exhaust zone is arranged at the end of the particle settling zone, and a cooling pipe is arranged between the end baffle of the particle settling zone and the front baffle of the exhaust zone to connect the two.

2. The dust removal and cooling device for gas containing high-temperature particulate matter according to claim 1 is characterized in that: The spiral blades in the spiral separator are arranged in plurality, and the pitches between adjacent spiral blades are shortened along the dust removal wind direction.

3. The dust removal and cooling device for gas containing high-temperature particulate matter according to claim 1, characterized in that: The cooling pipe is arranged between a plurality of end baffles which are arranged in a row in the particle settling area and a front baffle of the exhaust area.

4. The dust removal and cooling device for gas containing high-temperature particulate matter according to claim 1, characterized in that: The cooling pipe is arranged outside the fin.

5. The dust removal and cooling device for gas containing high-temperature particulate matter according to claim 1, characterized in that: The spiral separator, the high-temperature cyclone separation zone, the particle settling zone and the exhaust zone are all transversely coaxially arranged.

6. The dust removal and cooling device for gas containing high-temperature particulate matter according to claim 1, characterized in that: The cooling pipe is provided below a guide cover; the guide cover is provided above a fan port; the guide cover is in a diameter-expanding structure from the fan port toward the cooling pipe.

7. The dust removal and cooling device for gas containing high-temperature particulate matter according to claim 1, characterized in that: Also includes: A primary settling pipe, arranged below the high-temperature cyclone separation zone; A secondary settling pipe is arranged below the particle settling area; The collecting main pipe is connected with the primary settling pipe and the secondary settling pipe.

8. The dust removal and cooling device for gas containing high-temperature particulate matter according to claim 7, characterized in that: A switch valve is arranged below the collecting main pipe.

9. The dust removal and cooling device for gas containing high-temperature particulate matter according to claim 8, characterized in that: The switch valve comprises: The inner tube is connected with the collecting main tube and is provided with an inner valve at its opening; a gravity rod is hinged on the side wall of the inner tube; one end of the gravity rod on the inner tube is hinged with the inner valve, and the other end is provided on the counterweight block; The outer tube is sleeved on the outer part of the lower end of the inner tube, and an outer valve is provided at its opening; a fixing frame is extended downward on the side wall of the outer tube, and a gravity rod is hinged on the fixing frame; one end of the gravity rod on the outer tube is hinged to the outer valve, and the other end is provided on the counterweight block.

10. The dust removal and cooling device for gas containing high-temperature particulate matter according to claim 9, characterized in that: Also includes: The upper limit rod and the lower limit rod are respectively arranged at the upper and lower ends of the gravity rod to limit the deflection angles of the inner valve and the outer valve.

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