Silicon-manganese alloy flue gas waste heat recovery heating device

Abstract

The utility model provides a silicomanganese alloy flue gas waste heat recovery heating device, and relates to the field of flue gas waste heat recovery, the silicomanganese alloy flue gas waste heat recovery heating device comprises a recovery mechanism, the upper side of the recovery mechanism is provided with a filtering mechanism, the filtering mechanism is internally provided with a switching mechanism, and the upper side of the switching mechanism is detachably provided with three first filter elements; two supporting and adjusting mechanisms are detachably mounted outside the recycling mechanism, and second filter elements are arranged on the upper sides of the supporting and adjusting mechanisms. Through cooperation of the driving motor, the transmission gear, the teeth, the rotating table and other structures, the multiple first filter elements can be integrated in the mounting pipe in a circumferential array mode, when the filtering efficiency is reduced due to blockage of a certain filter element, the driving motor only needs to be started through an external controller, the rotating table can be driven to rotate, and the filtering efficiency is improved. The standby filter element is quickly switched to the working position, shutdown or disassembly is not needed in the process, and the problems that a filter element of a traditional structure is tedious in replacement operation, time-consuming and labor-consuming are solved.

Description

Technical Field

[0001] This utility model relates to the field of flue gas waste heat recovery, specifically to a silicon-manganese alloy flue gas waste heat recovery heating device. Background Technology

[0002] Manganese-silicon alloy is a commonly used composite deoxidizer in steelmaking, and also a reducing agent in the production of low-carbon ferromanganese and the production of metallic manganese by the electro-silicon thermal process. The production of ferromanganese alloy is carried out in an electric arc furnace, using carbonaceous reducing agents, manganese ore, manganese-rich slag, sintered manganese ore, roasted manganese ore and silica as raw materials, and lime, dolomite, fluorite and other fluxes for continuous production in an electric furnace.

[0003] In the prior art, Chinese utility model patent CN222468454U discloses a waste heat recovery mechanism for silicon-manganese alloy production. This mechanism filters flue gas using an adjustable-height filter within the recovery housing and heats industrial liquids using alloy coils within the housing, thus achieving waste heat recovery. However, in actual use, the flue gas discharged through the exhaust pipe directly enters the recovery housing and impacts the fiber filter element inside the chimney. The large amount of high-temperature dust (especially heavy metal oxide particles) carried in the flue gas quickly clogs the micropores on the filter element surface, leading to a rapid increase in system resistance. The rapid increase in air pollution leads to a decrease in filtration efficiency, resulting in frequent filter element replacements, increased operating costs, and potential filter element blockage causing poor flue gas emission and affecting the normal operation of the smelting furnace. However, the existing technology uses a combination of side support arms, threaded columns, nuts, and transverse support plates to fix the ceramic filter element and the fiber filter element inside the chimney. Each time the filter element is replaced or cleaned, multiple nuts must be loosened and removed before the transverse support plate and the filter element can be removed as a whole. This operation is not only time-consuming and labor-intensive, but small parts are also prone to loss or corrosion, increasing maintenance difficulty and downtime. In view of this, we propose a silicon-manganese alloy flue gas waste heat recovery heating device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to solve the problem of inconvenience in the current use of waste heat recovery from flue gas of some silicon-manganese alloys.

[0005] To achieve the above-mentioned objectives and improve the above-mentioned problems, this utility model provides a silicon-manganese alloy flue gas waste heat recovery and heating device, including a recovery mechanism, a filter mechanism on the upper side of the recovery mechanism, a switching mechanism inside the filter mechanism, three first filter elements detachably installed on the upper side of the switching mechanism, two support and adjustment mechanisms detachably installed on the outside of the recovery mechanism, a second filter element on the upper side of the support and adjustment mechanism, and a maintenance mechanism and a drive mechanism on the outside of the filter mechanism.

[0006] The filtration mechanism includes an installation tube, which is detachably installed on the upper side of the recycling mechanism. The bottom wall of the installation tube has a first through hole, through which the installation tube is connected to the interior of the recycling mechanism. The upper surface of the installation tube has a second through hole, through which the installation tube is connected to the second filter element.

[0007] As a preferred technical solution of this application, the switching mechanism includes a rotating platform, which is rotatably connected to the bottom wall of the internal space of the installation tube by means of a shaft. The rotating platform has three smoke passage grooves inside, the diameter of which is adapted to the diameter of the first through hole, and the positions of the three first filter elements correspond to the positions of the three smoke passage grooves.

[0008] As a preferred technical solution of this application, the driving mechanism includes a protective box, which is detachably installed on the outside of the mounting tube. The protective box has a cavity inside, and a transmission gear is rotatably connected to the cavity through a shaft. The outer circumferential surface of the rotating table is fixedly connected with teeth, and the transmission gear is meshed with the rotating table through the teeth.

[0009] As a preferred technical solution of this application, a drive motor is fixedly connected to the upper surface of the protective box, and the shaft of the drive motor rotates through the interior of the protective box and is fixedly connected by a coupling and a transmission gear.

[0010] As a preferred technical solution of this application, the recycling mechanism includes a recycling cylinder, which is located below the filter mechanism. A smoke exhaust pipe connected to the lower side of the recycling cylinder is fixedly connected to the cylinder and communicates with the interior. An alloy coil is installed inside the recycling cylinder.

[0011] As a preferred technical solution of this application, the lower end of the alloy coil extends through the lower surface of the recovery cylinder, and the other end of the alloy coil extends through the outer circumferential surface of the recovery cylinder. Several inclined plates are fixedly connected inside the recovery cylinder, and the inclined plates are located on the upper side of the alloy coil.

[0012] As a preferred technical solution of this application, the support adjustment mechanism includes a vertical plate, which is detachably installed on the outside of the recycling mechanism. A U-shaped adjustment frame is slidably connected inside the vertical plate. The surface of the U-shaped adjustment frame is provided with a plurality of positioning holes. A support plate is provided on the upper side of the U-shaped adjustment frame, and the second filter element is installed on the support plate.

[0013] As a preferred technical solution of this application, the maintenance mechanism includes a maintenance box, which is fixedly connected to the outside of the filter mechanism. The maintenance box has a door on its outside, and the installation pipe has a maintenance window on its outside, which is connected to the maintenance box.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] In the scheme of this application:

[0016] 1. Through the cooperation between the drive motor, transmission gears, teeth and rotating table, multiple first filter elements can be integrated in the installation tube in a circumferential array. When the filtration efficiency of a filter element decreases due to blockage, the drive motor can be started by the external controller to rotate the rotating table and quickly switch the spare filter element to the working position. This process does not require stopping or disassembling, which solves the problem of cumbersome, time-consuming and labor-intensive filter element replacement in traditional structures and significantly reduces maintenance downtime.

[0017] 2. By fixing several inclined plates inside the recovery cylinder and above the alloy coil, the high-temperature flue gas first impacts the inclined plates after entering, changing its flow path. Coarse particles in the airflow (especially high-density metal oxide particles) are separated and settled under inertia, which greatly reduces the direct impact and dust load entering the first filter element, slows down the clogging speed of the filter element, not only extending the use and replacement cycle of the filter element and reducing operating costs, but also avoiding the risk of abnormal increase in system resistance and poor flue gas emission caused by the filter element clogging too quickly. Attached Figure Description

[0018] Figure 1 A schematic diagram of the silicon-manganese alloy flue gas waste heat recovery and heating device provided in this application;

[0019] Figure 2 This is a first schematic cross-sectional view of the installation pipe in the silicon-manganese alloy flue gas waste heat recovery heating device provided in this application.

[0020] Figure 3 This is a second schematic cross-sectional view of the installation pipe in the silicon-manganese alloy flue gas waste heat recovery heating device provided in this application.

[0021] Figure 4 This is a cross-sectional structural diagram of the recovery cylinder in the silicon-manganese alloy flue gas waste heat recovery and heating device provided in this application.

[0022] The image shows:

[0023] 1. Recycling mechanism; 11. Recycling cylinder; 12. Exhaust pipe fittings; 13. Alloy coil; 14. Inclined plate; 2. Filtration mechanism; 21. Installation pipe; 22. First through hole; 23. Second through hole; 3. Switching mechanism; 31. Rotating table; 32. Smoke duct; 4. Drive mechanism; 41. Protective box; 42. Cavity; 43. Transmission gear; 44. Drive motor; 5. First filter element; 6. Second filter element; 7. Support and adjustment mechanism; 71. Vertical plate; 72. C-shaped adjustment frame; 73. Support plate; 8. Maintenance mechanism; 81. Inspection box; 82. Box door; 83. Inspection window; 9. Gear. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0026] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] Example 1

[0029] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 A silicon-manganese alloy flue gas waste heat recovery and heating device includes a recovery mechanism 1, a filter mechanism 2 is provided on the upper side of the recovery mechanism 1, a switching mechanism 3 is provided inside the filter mechanism 2, three first filter elements 5 are detachably installed on the upper side of the switching mechanism 3, two support adjustment mechanisms 7 are detachably installed on the outside of the recovery mechanism 1, a second filter element 6 is provided on the upper side of the support adjustment mechanism 7, and a maintenance mechanism 8 and a drive mechanism 4 are provided on the outside of the filter mechanism 2.

[0030] The filter mechanism 2 includes an installation pipe 21, which is detachably installed on the upper side of the recycling mechanism 1. The bottom wall of the installation pipe 21 has a first through hole 22, which connects the installation pipe 21 to the interior of the recycling mechanism 1, thereby facilitating the filtration of flue gas. The upper surface of the installation pipe 21 has a second through hole 23, which connects the installation pipe 21 to the second filter element 6, thereby facilitating further filtration of flue gas.

[0031] Furthermore, such as Figure 2 , Figure 3 As shown, the switching mechanism 3 includes a rotating platform 31, which is rotatably connected to the bottom wall of the internal space of the mounting pipe 21 via a shaft. The rotating platform 31 has three smoke passage grooves 32 inside, the diameter of which is matched with the diameter of the first through hole 22. The three first filter elements 5 correspond to the positions of the three smoke passage grooves 32 respectively, and each first filter element 5 needs to be individually sealed with the rotating platform 31 (such as by using a high-temperature rubber ring or metal spiral wound gasket). The first filter element 5 is used to filter the flue gas passing through the first through hole 22 and the smoke passage grooves 32.

[0032] Furthermore, such as Figure 3 As shown, the drive mechanism 4 includes a protective box 41, which is detachably installed on the outside of the mounting tube 21. The protective box 41 has a cavity 42 inside, and a transmission gear 43 is rotatably connected inside the cavity 42 via a shaft. The outer circumferential surface of the rotating table 31 is fixedly connected with teeth 9, and the transmission gear 43 is meshed with the rotating table 31 through the teeth 9.

[0033] Furthermore, such as Figure 3 As shown, a drive motor 44 is fixedly connected to the upper surface of the protective box 41. The shaft of the drive motor 44 rotates through the interior of the protective box 41 and is fixedly connected to the transmission gear 43 by means of a coupling. The drive motor 44 can be started by an external controller to drive the transmission gear 43 to rotate. At this time, the rotating table 31 can be rotated by means of the gear teeth 9. The rotation of the rotating table 31 can realize the switching of the first filter element 5. When one of the first filter elements 5 has a low filtration efficiency, the other can be switched to continue the filtration work, thereby ensuring the continuity of the filtration work.

[0034] It should be noted that the drive motor 44 in this embodiment can be a high-temperature resistant or explosion-proof motor, and the power does not need to be very large. The rotating table 31, the transmission gear 43 and the teeth 9 can be made of high-temperature resistant and corrosion-resistant materials, such as 310S stainless steel or higher-grade heat-resistant steel, and the tooth surface is nitrided.

[0035] Furthermore, as is well known to those skilled in the art, the working principle and wiring method of the drive motor 44 are commonplace and are all conventional methods or common knowledge, so they will not be elaborated here. Those skilled in the art can make any selections according to their needs or convenience.

[0036] Furthermore, such as Figure 4 As shown, the recycling mechanism 1 includes a recycling cylinder 11, which is located below the filter mechanism 2. The lower side of the recycling cylinder 11 is fixedly connected to an exhaust pipe 12 that communicates with the interior, so as to connect to the exhaust port of the metallurgical furnace. An alloy coil 13 is provided inside the recycling cylinder 11.

[0037] Furthermore, such as Figure 4 As shown, the lower end of the alloy coil 13 extends through the lower surface of the recovery cylinder 11, and the other end of the alloy coil 13 extends through the outer circumference of the recovery cylinder 11. A valve is also matched to the lower end of the alloy coil 13 to facilitate the circulation and heat absorption treatment of the liquid. Several inclined plates 14 are fixedly connected inside the recovery cylinder 11, and the inclined plates 14 are located on the upper side of the alloy coil 13. The inclined plates 14 are used to guide the flue gas to repeatedly laterally flush the alloy coil 13, prolonging the residence time. Moreover, after the flue gas enters, it first hits several inclined plates 14, and large particles separate and slide off due to inertia, thereby greatly reducing the amount of dust entering the first filter element 5 and reducing the maintenance efficiency of the first filter element 5.

[0038] Furthermore, since the two support adjustment mechanisms 7 on the outside of the recycling mechanism 1 have the same structure, the following description will focus on the support adjustment mechanism 7 on one side.

[0039] Furthermore, such as Figure 1 As shown, the support adjustment mechanism 7 includes a vertical plate 71, which is detachably installed on the outside of the recycling mechanism 1. A U-shaped adjustment frame 72 is slidably connected inside the vertical plate 71. Several positioning holes are opened on the surface of the U-shaped adjustment frame 72. A support plate 73 is provided on the upper side of the U-shaped adjustment frame 72. The second filter element 6 is installed on the support plate 73. In use, the operator first installs the vertical plate 71 on the outside of the recycling mechanism 1, and then adjusts the extension of the U-shaped adjustment frame 72 inside the vertical plate 71 according to the actual usage requirements. After adjustment, it is fixed by means of external fastening clamps and positioning holes, thereby realizing the assembly of the support adjustment mechanism 7.

[0040] Furthermore, such as Figure 1 , Figure 2As shown, the maintenance mechanism 8 includes a maintenance box 81, which is fixedly connected to the outside of the filter mechanism 2. The outside of the maintenance box 81 is provided with a door 82, and the outside of the installation pipe 21 is provided with a maintenance window 83. The maintenance window 83 is connected to the maintenance box 81. The maintenance mechanism 8 facilitates the replacement of the first filter element 5 by the staff.

[0041] The usage process of the silicon-manganese alloy flue gas waste heat recovery heating device provided by this utility model is as follows:

[0042] First, the staff installs the vertical plate 71 on the outside of the recycling mechanism 1. Then, according to the actual usage requirements, they adjust the extension of the C-shaped adjustment frame 72 inside the vertical plate 71. After the adjustment is completed, the frame is fixed by the cooperation of the external fastening clamp and the positioning hole, thereby realizing the assembly of the support adjustment mechanism 7.

[0043] The flue gas is then introduced into the recovery mechanism 1 through the exhaust pipe 12, and the liquid is introduced into the alloy coil 13. Subsequently, the flue gas is guided by the inclined plate 14 to repeatedly scour the alloy coil 13 laterally, prolonging the residence time. After the flue gas enters, it first impacts several inclined plates 14, and large particles separate and slide off due to inertia, thereby significantly reducing the amount of dust entering the first filter element 5 and reducing the maintenance efficiency of the first filter element 5. At this time, the waste heat of the flue gas can be used to heat the liquid inside the alloy coil 13, achieving the purpose of waste heat recovery, which is convenient for subsequent heating. The flue gas will then be filtered through the first filter element 5 and the second filter element 6 before being discharged.

[0044] In addition, the staff can start the drive motor 44 to drive the transmission gear 43 to rotate through the external controller. At this time, the rotating table 31 can be rotated by the setting of the teeth 9. The first filter element 5 can be switched by rotating the rotating table 31. When one of the first filter elements 5 has a low filtration efficiency, the other can be switched to continue the filtration work, thereby ensuring the continuity of the filtration work and effectively reducing the maintenance frequency of the first filter element 5.

[0045] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0046] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A flue gas waste heat recovery heating device for a silicon-manganese alloy, characterized in that, The utility model provides a filter device for recycling, which comprises a recycling mechanism (1), a filtering mechanism (2) arranged on the upper side of the recycling mechanism (1), a switching mechanism (3) arranged in the filtering mechanism (2), three first filter elements (5) detachably mounted on the upper side of the switching mechanism (3), two support adjusting mechanisms (7) detachably mounted on the outer side of the recycling mechanism (1), a second filter element (6) arranged on the upper side of the support adjusting mechanism (7), a maintenance mechanism (8) and a driving mechanism (4) arranged on the outer side of the filtering mechanism (2). The filtering mechanism (2) comprises a mounting pipe (21) detachably mounted on the upper side of the recycling mechanism (1), a first through hole (22) formed in the bottom wall of the mounting pipe (21), and a second through hole (23) formed in the upper surface of the mounting pipe (21).

2. The flue gas waste heat recovery heating device for silicon-manganese alloy according to claim 1, characterized in that, The switching mechanism (3) comprises a rotating table (31) rotatably connected to the bottom wall of the inner space of the mounting pipe (21) by means of a shaft body, three smoke passing grooves (32) formed in the inner part of the rotating table (31), and the diameters of the smoke passing grooves (32) and the first through hole (22) are matched, and the three first filter elements (5) are respectively corresponded to the positions of the three smoke passing grooves (32).

3. The flue gas waste heat recovery heating device for silicon-manganese alloy according to claim 2, characterized in that, The driving mechanism (4) comprises a protective box (41) detachably mounted on the outer side of the mounting pipe (21), a cavity (42) formed in the inner part of the protective box (41), a transmission gear (43) rotatably connected to the inner part of the cavity (42) by means of a shaft body, a gear tooth (9) fixedly connected to the outer peripheral surface of the rotating table (31), and the transmission gear (43) is meshingly connected to the rotating table (31) through the gear tooth (9).

4. The flue gas waste heat recovery heating device for silicon-manganese alloy according to claim 3, characterized in that, The upper surface of the protective box (41) is fixedly connected with a driving motor (44), the shaft body of the driving motor (44) penetrates into the inner part of the protective box (41) and is fixedly connected to the transmission gear (43) by means of a shaft coupling.

5. The flue gas waste heat recovery heating device for a silicon-manganese alloy according to claim 4, characterized in that, The recycling mechanism (1) comprises a recycling cylinder (11) arranged on the lower side of the filtering mechanism (2), an exhaust pipe (12) fixedly connected to the inner part of the recycling cylinder (11) and arranged on the lower side of the recycling cylinder (11), and an alloy coil pipe (13) arranged in the inner part of the recycling cylinder (11).

6. The flue gas waste heat recovery heating device for a silicon-manganese alloy according to claim 5, characterized in that, The lower end of the alloy coil pipe (13) penetrates out of the lower surface of the recycling cylinder (11), the other end of the alloy coil pipe (13) penetrates out of the outer peripheral surface of the recycling cylinder (11), a plurality of inclined plates (14) are fixedly connected to the inner part of the recycling cylinder (11) and arranged on the upper side of the alloy coil pipe (13).

7. The flue gas waste heat recovery heating device for silicon-manganese alloy according to claim 6, characterized in that, The support adjusting mechanism (7) comprises a vertical plate (71) which is detachably mounted outside the recycling mechanism (1), the inside of the vertical plate (71) is slidably connected with a D-shaped adjusting frame (72), a plurality of positioning holes are formed in the surface of the D-shaped adjusting frame (72), a supporting plate (73) is arranged on the upper side of the D-shaped adjusting frame (72), and the second filter element (6) is mounted on the supporting plate (73).

8. The flue gas waste heat recovery heating device for silicon-manganese alloy according to claim 7, characterized in that, The maintenance mechanism (8) comprises an inspection box (81) which is fixedly connected outside the filtering mechanism (2), a box door (82) is arranged outside the inspection box (81), and an inspection window (83) is formed in the outside of the mounting pipe (21) and communicates with the inspection box (81).

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