Metal chromium reduction furnace flue gas dust removal, desulfurization and denitrification system convenient for feeding

Abstract

The utility model discloses a metal chromium reduction furnace flue gas dust removal, desulfurization and denitrification system convenient for feeding, which relates to the technical field of metal chromium processing, and comprises a gas treatment bin group and a feeding component, the feeding assemblies are symmetrically installed at the upper ends of the left side and the right side of the flue gas treatment bin set, and lifting assemblies are connected to the middles of the left side and the right side of the flue gas treatment bin set correspondingly. According to the metal chromium reduction furnace flue gas dust removal, desulfurization and denitrification system convenient to feed, through the feeding assemblies symmetrically arranged on the left side and the right side of the flue gas treatment bin set, feeding can be conducted at any time in the flue gas treatment process while the sealing performance is not affected, so that sulfur and nitrate in flue gas are reduced and separated through a catalyst, and the efficiency of flue gas treatment is improved. And in addition, by using a lifting assembly, the upper bin body and the lower bin body can be structurally separated, so that sulfur and nitrate separated from the flue gas can be conveniently recycled and cleaned, and the interior of the flue gas treatment bin group is maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of metal chromium processing, in particular to a metal chromium reduction furnace flue gas dust removal, desulfurization and denitrification system which is convenient for charging. Background Art

[0002] A reduction furnace is a heating device used to reduce metal or ceramic materials from an oxidized state to elements or metals. It can be used in many industrial processes, such as metallurgy, chemistry, semiconductor manufacturing, glass manufacturing, and ceramic manufacturing. Its principle is mainly based on chemical reduction reactions, which reduce and extract metals by heating ore or waste at high temperatures to react with a reducing agent;

[0003] Its working principle is to place metal powder in a furnace and carry out the reduction and sintering process under a certain temperature and controlled atmosphere. Generally, the reduction furnace uses hydrogen as a reducing agent because hydrogen can react with metal powder at high temperature to reduce the metal oxide, thereby turning it into pure metal or metal alloy. The water vapor generated during the reaction is taken away, thereby ensuring the balance of the reduction reaction;

[0004] The entire reduction furnace device includes a waste gas treatment device, namely a flue gas dust removal, desulfurization and denitrification system, which is used to properly treat the generated waste gas, such as dust removal, desulfurization, etc., to reduce pollution.

[0005] During the operation of conventional flue gas treatment devices, the maintenance of their internal structures is relatively inconvenient due to their relatively sealed structures. At the same time, during the desulfurization and denitrification process of flue gas, the high temperature will make the manual addition of catalysts have a certain degree of operational risk. Therefore, a relatively stable and safe structure is required to assist in the maintenance of its internal structure and the real-time addition of catalysts.

[0006] Therefore, in view of this, the existing structure and deficiencies are studied and improved, and a flue gas dust removal, desulfurization and denitrification system for a metal chromium reduction furnace which is easy to add material is proposed. Utility Model Content

[0007] The utility model aims to provide a metal chromium reduction furnace flue gas dust removal, desulfurization and denitrification system which is convenient for charging, so as to solve the problems raised in the above-mentioned background technology.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a metal chromium reduction furnace flue gas dust removal, desulfurization and denitrification system that is easy to add materials, including a flue gas treatment chamber group and a feeding component, the interior of the flue gas treatment chamber group is equidistantly arranged with sulfur-nitrate separation nets from top to bottom, the feeding component is symmetrically installed on the upper ends of the left and right sides of the flue gas treatment chamber group, and the middle parts of the left and right sides of the flue gas treatment chamber group are connected to lifting components, and the lifting components away from the flue gas treatment chamber group are connected to a stabilizing frame group, the feeding component includes a feed pipe, an external valve pipe and a one-way valve, the top of the feed pipe is installed with an external valve pipe, and the lower end of the feed pipe is connected to a one-way valve.

[0009] Furthermore, the flue gas treatment chamber group includes an upper chamber body, an air inlet flange, a lower chamber body, an air outlet pipe and a window, the top of the upper chamber body is provided with an air inlet flange, the bottom of the upper chamber body is movably connected to the lower chamber body, the bottom of the lower chamber body is provided with an air outlet pipe, and windows are opened on the surfaces of the upper chamber body and the lower chamber body.

[0010] Furthermore, the flue gas treatment bin group also includes a docking tenon, a fixing block and a fastening bolt. The joints between the upper bin body and the lower bin body are provided with a docking tenon, and a fixing block is sleeved on the outer side of the docking tenon, and a fastening bolt is vertically installed in the middle of the fixing block.

[0011] Furthermore, the outer surface structure of the butt joint matches the inner surface structure of the fixing block, and both the butt joint and the fixing block are threadedly connected to the fastening bolts.

[0012] Furthermore, the sulfur-nitrate separation screen includes a composite filter screen, an assembly frame and assembly bolts. The assembly frames are symmetrically arranged on the left and right sides of the composite filter screen, and the assembly bolts are vertically installed at the joint between the assembly frame and the composite filter screen.

[0013] Furthermore, the lifting assembly includes a screw rod, a servo motor, a lifting slider and a connecting frame. The bottom of the screw rod is connected to the servo motor, and the surface of the screw rod is threadedly connected to the lifting slider, and the connecting frame is horizontally installed on the side of the lifting slider close to the flue gas treatment chamber group.

[0014] Furthermore, the stabilizing frame group includes a platform, a stabilizing frame and a supporting frame. The stabilizing frames are symmetrically and vertically installed on the left and right sides of the platform, and the supporting frame is arranged on one side of the stabilizing frame close to the vertical central axis of the platform.

[0015] Furthermore, the screw rod is installed on the side of the stabilizing frame, and one end of the connecting frame away from the screw rod is connected to the side of the upper warehouse body, and one end of the supporting frame away from the platform is fixed to the lower end of the outer side of the lower warehouse body.

[0016] The utility model provides a flue gas dust removal, desulfurization and denitrification system for a metal chromium reduction furnace which is easy to charge, and has the following beneficial effects:

[0017] 1. The utility model has a feeding assembly installed on the upper ends of the left and right sides of the upper bin body. When the high-temperature flue gas is injected into the flue gas treatment bin group through the air inlet flange, the catalyst can be directly sprayed into the flue gas treatment bin group through the feeding assembly. The use of a one-way valve can avoid leakage of flue gas during the process of adding the catalyst to the greatest extent. At the same time, the external valve pipe can be connected to the external catalyst feeding equipment under the connection of the pipeline to avoid leakage of flue gas during the feeding process to ensure the airtightness of the feeding process. At the same time, due to the use of the feeding assembly, the catalyst can be added at any time according to the needs of the situation during the entire flue gas treatment process to ensure the effect of desulfurization and denitrification.

[0018] 2. In the utility model, since the upper bin body and the lower bin body are structurally separable, when the two need to be structurally combined, it is only necessary to splice the lateral joint tenons of the upper bin body and the lower bin body at the joint, and then use the fixing block to slide the joint tenons at the edges of the upper bin body and the lower bin body in the horizontal direction, and use the vertical thread of the assembly bolt to penetrate the fixing block and the joint tenon, so as to tightly connect the upper bin body and the lower bin body to prevent loosening and leakage. At the same time, the windows provided on the surfaces of the upper bin body and the lower bin body enable the operating personnel to observe the internal situation at any time, so as to adjust the addition of the catalyst at any time, and the structural separability of the flue gas treatment bin group itself makes the subsequent maintenance and cleaning of the interior more convenient.

[0019] 3. The utility model also utilizes the structural operation of the lifting assembly. Under the drive of the servo motor, the lead screw at the power output end is driven to rotate axially in the vertical direction, so that the lifting slider on the surface of the lead screw is translated up and down, and then the upper bin body connected to the structure by the connecting frame is driven to translate synchronously. Through the use of the above structure, the separation or docking of the upper bin body and the lower bin body can be made time-saving and labor-saving, thereby improving the efficiency and safety of the operation and ensuring the flexibility of the entire device structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the main body structure of a metal chromium reduction furnace flue gas dust removal, desulfurization and denitrification system that is easy to add materials according to the utility model;

[0021] Figure 2 It is a front cross-sectional structural schematic diagram of a flue gas treatment chamber group of a flue gas dust removal, desulfurization and denitrification system of a metal chromium reduction furnace that is convenient for charging according to the utility model;

[0022] Figure 3 The utility model is a metal chromium reduction furnace flue gas dust removal, desulfurization and denitrification system which is convenient for charging Figure 2 A schematic diagram of the enlarged structure at point A;

[0023] Figure 4This is a schematic diagram of the structure of a sulfur-nitrogen separation network of a metal chromium reduction furnace flue gas dust removal, desulfurization and denitrification system that is convenient for charging in the utility model;

[0024] Figure 5 The utility model is a schematic diagram of the three-dimensional structure of a stable frame group of a metal chromium reduction furnace flue gas dust removal, desulfurization and denitrification system which is convenient for charging.

[0025] In the figure: 1. Flue gas treatment chamber group; 101. Upper chamber body; 102. Inlet flange; 103. Lower chamber body; 104. Exhaust pipe; 105. Window; 106. Docking tenon; 107. Fixing block; 108. Fastening bolts; 2. Sulfur-nitrate separation net; 201. Composite filter; 202. Assembly frame; 203. Assembly bolts; 3. Feeding assembly; 301. Feeding pipe; 302. External valve pipe; 303. Check valve; 4. Lifting assembly; 401. Screw rod; 402. Servo motor; 403. Lifting slider; 404. Connecting frame; 5. Stabilizing frame group; 501. Platform; 502. Stabilizing frame; 503. Support frame. DETAILED DESCRIPTION

[0026] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0027] like Figures 1 to 5 As shown, a flue gas dust removal, desulfurization and denitrification system for a metal chromium reduction furnace that is easy to charge includes a flue gas treatment chamber group 1 and a charging component 3. The interior of the flue gas treatment chamber group 1 is equidistantly arranged with sulfur-nitrate separation nets 2 from top to bottom. The charging component 3 is symmetrically installed on the upper ends of the left and right sides of the flue gas treatment chamber group 1, and the middle of the left and right sides of the flue gas treatment chamber group 1 are connected to lifting components 4, and the lifting components 4 are connected to the components away from the flue gas treatment chamber group 1. The stabilizing frame group 5, the charging component 3 includes a conveying pipe 301, an external valve pipe 302, and a stabilizing frame group 5. and a one-way valve 303, an external valve pipe 302 is installed on the top of the delivery pipe 301, and the lower end of the delivery pipe 301 is connected to the one-way valve 303, through the feeding assembly 3 installed on the upper ends of the left and right sides of the upper bin body 101, when the high-temperature flue gas is injected into the flue gas treatment bin group 1 through the air inlet flange 102, the catalyst can be directly sprayed into the flue gas treatment bin group 1 through the feeding assembly 3, and the use of the one-way valve 303 can avoid leakage of flue gas during the process of adding catalyst to the greatest extent.

[0028] The flue gas treatment chamber group 1 includes an upper chamber body 101, an air inlet flange 102, a lower chamber body 103, an air outlet pipe 104 and a window 105. The top of the upper chamber body 101 is provided with an air inlet flange 102, and the bottom of the upper chamber body 101 is movably connected to the lower chamber body 103, and the bottom of the lower chamber body 103 is provided with an air outlet pipe 104, and the surfaces of the upper chamber body 101 and the lower chamber body 103 are provided with a window 105. The flue gas treatment chamber group 1 also includes a docking tenon 106, a fixing block 107 and a fastening bolt 108. The docking point of the upper chamber body 101 and the lower chamber body 103 is provided with a docking tenon 106, and the outer side of the docking tenon 106 is sleeved with a fixing block 107, and the fixing block 108 is provided with a fixing block 107. A fastening bolt 108 is vertically installed in the middle of 7, and the outer surface structure of the docking tenon 106 matches the inner surface structure of the fixing block 107. The docking tenon 106 and the fixing block 107 are threadedly connected with the fastening bolt 108. It is only necessary to splice the docking tenon 106 on the side of the docking place between the upper warehouse body 101 and the lower warehouse body 103 up and down, and then use the fixing block 107 to slide the docking tenon 106 on the edge of the upper warehouse body 101 and the lower warehouse body 103 in the horizontal direction, and use the assembly bolt 203 to vertically thread through the fixing block 107 and the docking tenon 106, so as to tightly dock the upper warehouse body 101 and the lower warehouse body 103 to prevent loosening and leakage.

[0029] The sulfur-nitrate separation net 2 includes a composite filter 201, an assembly frame 202 and an assembly bolt 203. The assembly frames 202 are symmetrically arranged on the left and right sides of the composite filter 201, and the assembly bolts 203 are vertically installed at the joint between the assembly frame 202 and the composite filter 201. The lifting assembly 4 includes a screw rod 401, a servo motor 402, a lifting slider 403 and a connecting frame 404. The bottom of the screw rod 401 is connected to the servo motor 402, and the surface of the screw rod 401 is threadedly connected to the lifting slider 403, and the connecting frame 404 is horizontally installed on the side of the lifting slider 403 close to the flue gas treatment chamber group 1. The stabilizing frame group 5 includes a platform 501, a stabilizing frame 502 and a supporting frame 503. The platform 5 01 are symmetrically and vertically installed with stabilizing frames 502 on the left and right sides, and a supporting frame 503 is arranged on one side of the stabilizing frame 502 close to the vertical central axis of the platform 501, the screw rod 401 is installed on the side of the stabilizing frame 502, and the end of the connecting frame 404 away from the screw rod 401 is connected to the side of the upper warehouse body 101, and the end of the supporting frame 503 away from the platform 501 is fixed to the lower end of the outer side of the lower warehouse body 103. Driven by the servo motor 402, the screw rod 401 at the power output end is driven to rotate axially in the vertical direction, so that the lifting slider 403 on the surface of the screw rod 401 is translated up and down, thereby driving the upper warehouse body 101 connected to the structure with the connecting frame 404 to translate synchronously.

[0030] In summary, if Figures 1 to 5As shown, the chromium reduction furnace flue gas dust removal, desulfurization and denitrification system that is easy to charge, when in use, firstly, the output end of the external catalyst supply device is structurally connected to the external valve pipe 302 at the top of the feed pipe 301 through a pipeline, and then the entire flue gas treatment chamber group 1 is connected to the exhaust port of the upstream reduction furnace through the air inlet flange 102 at the top of the upper chamber body 101 through the connection of the pipeline;

[0031] After the above operation is completed, the high-temperature flue gas will be transported to the interior of the upper warehouse body 101 along with the transportation of the pipeline. At the same time, the catalyst is sprayed into the interior of the upper warehouse body 101 with the assistance of the feeding pipe 301 and the one-way valve 303. The reducing agent is directly sprayed into the high-temperature flue gas of 800~1100℃. Under high temperature conditions, the reducing agent is first decomposed into ammonia and other by-products, and then the nitrogen oxides in the flue gas further undergo oxidation-reduction reactions with the ammonia produced by the decomposition, reducing the nitrogen oxides in the flue gas to nitrogen and water. Then the flue gas will be desulfurized and denitrified, and the reduced water will be evaporated at high temperature to generate water vapor to absorb and wrap the dust and sulfur and nitrate in the flue gas, and then settle, and be filtered out under the action of the multi-layer composite filter 201, and then the treated gas and water will be discharged from the outlet pipe 104 at the bottom of the lower warehouse body 103;

[0032] When the smoke treatment chamber group 1 needs to be disassembled and its internal structure needs to be maintained, it is only necessary to screw in the fastening bolts 108 that threadedly connect the butt joint 106 and the fixing block 107 in the vertical direction, and pull out the fixing block 107 in the horizontal direction. Then, the servo motor 402 is started, and the screw rod 401 mounted on the side of the stabilizing frame 502 will rotate axially in the vertical direction, and drive the lifting slider 403 mounted on its surface to move upward. Driven by the lifting slider 403, the upper chamber body 101 connected to it through the connecting frame 404 is vertically lifted, and the lower chamber body 103 is vertically fixed in the middle of the platform 501 with the assistance of the supporting frame 503. After that, the operator can screw out the assembly bolts 203 in the middle of the assembly frame 202, thereby disassembling the composite filter 201 for its cleaning and maintenance.

[0033] The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. A flue gas dust removal, desulfurization and denitrification system for a metal chromium reduction furnace that is easy to charge, comprising a flue gas treatment chamber group (1) and a charging component (3), characterized in that: The interior of the flue gas treatment chamber group (1) is equidistantly arranged with sulfur-nitrate separation nets (2) from top to bottom, the feeding assembly (3) is symmetrically installed at the upper ends of the left and right sides of the flue gas treatment chamber group (1), and the middle parts of the left and right sides of the flue gas treatment chamber group (1) are connected to lifting assemblies (4), and the lifting assemblies (4) are connected to the components away from the flue gas treatment chamber group (1) with a stabilizing frame group (5), the feeding assembly (3) comprises a feeding pipe (301), an external valve pipe (302) and a one-way valve (303), the top of the feeding pipe (301) is installed with an external valve pipe (302), and the lower end of the feeding pipe (301) is connected with a one-way valve (303).

2. The chromium reduction furnace flue gas dust removal, desulfurization and denitrification system that is easy to charge according to claim 1 is characterized in that: The smoke treatment chamber group (1) comprises an upper chamber body (101), an air inlet flange (102), a lower chamber body (103), an air outlet pipe (104) and a viewing window (105); the top of the upper chamber body (101) is provided with an air inlet flange (102), the bottom of the upper chamber body (101) is movably connected to the lower chamber body (103), the bottom of the lower chamber body (103) is provided with an air outlet pipe (104), and the surfaces of the upper chamber body (101) and the lower chamber body (103) are provided with viewing windows (105).

3. The chromium reduction furnace flue gas dust removal, desulfurization and denitrification system that is easy to charge according to claim 2 is characterized in that: The smoke treatment bin assembly (1) further comprises a butt joint (106), a fixing block (107) and a fastening bolt (108); the butt joints of the upper bin body (101) and the lower bin body (103) are both provided with a butt joint (106); the fixing block (107) is sleeved on the outer side of the butt joint (106); and the fastening bolt (108) is vertically mounted in the middle of the fixing block (107).

4. The chromium reduction furnace flue gas dust removal, desulfurization and denitrification system that is easy to charge according to claim 3 is characterized in that: The outer surface structure of the butt joint (106) matches the inner surface structure of the fixing block (107), and both the butt joint (106) and the fixing block (107) are threadedly connected to the fastening bolt (108).

5. The chromium reduction furnace flue gas dust removal, desulfurization and denitrification system that is easy to charge according to claim 1 is characterized in that: The sulfur-nitrate separation net (2) comprises a composite filter (201), an assembly frame (202) and assembly bolts (203); the assembly frames (202) are symmetrically arranged on the left and right sides of the composite filter (201), and the assembly bolts (203) are vertically installed at the joint between the assembly frame (202) and the composite filter (201).

6. The chromium reduction furnace flue gas dust removal, desulfurization and denitrification system that is easy to charge according to claim 2 is characterized in that: The lifting assembly (4) comprises a screw rod (401), a servo motor (402), a lifting slider (403) and a connecting frame (404); the bottom of the screw rod (401) is connected to the servo motor (402), the surface of the screw rod (401) is threadedly connected to the lifting slider (403), and the connecting frame (404) is horizontally mounted on a side of the lifting slider (403) close to the smoke treatment chamber group (1).

7. A chromium reduction furnace flue gas dust removal, desulfurization and denitrification system that is easy to charge according to claim 6, characterized in that: The stabilizing frame group (5) comprises a platform (501), a stabilizing frame (502) and a supporting frame (503); the stabilizing frames (502) are symmetrically and vertically installed on the left and right sides of the platform (501); and the supporting frame (503) is arranged on one side of the stabilizing frame (502) close to the vertical central axis of the platform (501).

8. The chromium reduction furnace flue gas dust removal, desulfurization and denitrification system that is easy to charge according to claim 7 is characterized in that: The screw rod (401) is installed on the side of the stabilizing frame (502), and one end of the connecting frame (404) away from the screw rod (401) is connected to the side of the upper warehouse body (101), and one end of the supporting frame (503) away from the platform (501) is fixed to the lower end of the outer side of the lower warehouse body (103).

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