Waste gas treatment mechanism for steelmaking furnace

Abstract

The utility model discloses a waste gas treatment mechanism for a steel furnace, which comprises a column casing, a top cover is movably mounted at the top of the column casing, a bottom cover is movably mounted at the bottom of the column casing, first flanges are fixedly mounted at the joints of the column casing and the top cover, and second flanges are fixedly mounted at the joints of the column casing and the bottom cover. A plurality of bolt holes are formed in the first flange and the second flange, a cabin door is movably mounted on the outer side of the column casing, a mounting pipe is fixedly mounted at the top of the top cover, and a water inlet pipe fixedly sleeves one side of the top cover. Through the arrangement of the first flange and the top cover, the top cover and the bottom cover can be detached through the first flange and the second flange after use, the branch pipe and the communicating pipe can also be detached through the flanges, and the interior of the column casing can be cleaned and maintained by opening the cabin door, so that the overall maintenance is convenient, the service life is prolonged, and the overall use effect is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste gas treatment of steel-making furnaces, and in particular relates to a waste gas treatment mechanism for steel-making furnaces. Background Art

[0002] Steelmaking furnace is an electric furnace that uses the high temperature of the electrode arc to make steel. Heroux invented the industrial direct electric arc furnace in France from 1888 to 1892 for the production of calcium carbide and ferroalloys, and used it in steelmaking from 1900 to 1910. The three-phase electric arc furnace used for steelmaking is manufactured according to the principle of the Heroux electric arc furnace, so it is also called the Heroux electric arc furnace.

[0003] During the process of smelting steel, the steelmaking furnace will produce a lot of smoke and harmful substances, so the waste gas needs to be treated. The traditional waste gas treatment mechanism lacks a pre-treatment mechanism, there is no preliminary treatment of the high-temperature waste gas generated by the steelmaking furnace, and the overall maintenance is inconvenient, thereby reducing the life of the waste gas. Based on this, we propose a waste gas treatment mechanism for steelmaking furnaces. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a waste gas treatment mechanism for a steelmaking furnace, which solves the problem that the traditional waste gas treatment mechanism lacks a pre-treatment mechanism, has no preliminary treatment for the high-temperature waste gas generated by the steelmaking furnace and has inconvenient overall maintenance.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an exhaust gas treatment mechanism for a steelmaking furnace, comprising a column, a top cover is movably installed on the top of the column, a bottom cover is movably installed on the bottom of the column, a first flange is fixedly installed at the connection between the column and the top cover, a second flange is fixedly installed at the connection between the column and the bottom cover, a plurality of bolt holes are provided inside the first flange and the second flange, a hatch is movably installed on the outside of the column, a mounting pipe is fixedly installed on the top of the top cover, a water inlet pipe is fixedly sleeved on one side of the top cover, and the bottom end of the water inlet pipe is connected to a ring Tube, a plurality of atomizing nozzles are movably installed at the bottom end of the ring tube, a plurality of oblique nozzles are connected to the outside of the ring tube, sealing rings are fixedly installed at the top and bottom of the column tube, a plurality of branch rings are fixedly installed inside the column tube, a metal filter screen is movably installed on the top of the branch ring, the bottom end of the bottom cover is connected to a connecting pipe, the top of the connecting pipe is connected to an extension pipe, the bottom of the bottom cover is connected to a water outlet pipe, the bottom end of the connecting pipe is connected to a branch pipe, a spiral plate is fixedly installed inside the branch pipe, the bottom end of the branch pipe is connected to a connecting pipe, and the other end of the connecting pipe is fixedly installed with a third flange.

[0006] Preferably, the bolt holes are evenly distributed in a circumference inside the first flange and the second flange, and bolts are inserted in a staggered manner inside the bolt holes.

[0007] The above technical solution has the advantage that the bolt holes can fix the first flange and the second flange in the use position through bolts.

[0008] Preferably, valves are installed inside the water inlet pipe and the water outlet pipe, and the water outlet pipe is connected to the bottom of the extension pipe on the opposite side of the bottom cover.

[0009] The above technical solution has the advantage of lowering the temperature inside, making it easier for water to be discharged through the outlet pipe.

[0010] Preferably, the annular tube is fixedly installed inside the top cover, and the atomizing nozzles and the oblique nozzles are evenly connected and distributed on the outside of the annular tube in a circumferential manner.

[0011] The advantage of adopting the above technical solution is that the uniform distribution of the atomizing nozzles and the oblique nozzles facilitates stability.

[0012] Preferably, the top cover and the bottom cover are both sleeved on the outside of the column, and the sealing ring is located at the connection between the column and the top cover and the bottom cover.

[0013] The above technical solution has the advantages of being easy to seal to prevent water from flowing out, facilitating the convection of water and reducing external leakage.

[0014] Preferably, the extension tube extends through the interior of the bottom cover, and a conical sealing ring is provided at the top of the metal filter.

[0015] The adoption of the above technical solution has the advantage of enabling water flow to be guided.

[0016] Preferably, the connecting pipe, the branch pipe and the communicating pipe are fixedly installed via flange rings.

[0017] The adoption of the above technical solution has the advantages of facilitating overall maintenance, increasing service life and achieving good overall use effect.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. When the device is used, first connect the device to the exhaust gas collecting end of the steelmaking furnace through the third flange, and then connect the water inlet pipe and the water outlet pipe to the water supply end and the filtering treatment end respectively. Then, when the exhaust gas enters the branch pipe through the connecting pipe, the spiral diversion of the branch pipe applies a rotational force to the gas, and then enters the connecting pipe, and enters the column through the diversion of the extension pipe. At this time, the smoke particles will be filtered by the outer edge of the metal filter under the action of rotation and diversion, and the smoke particles will be attached. The water flows into the annular tube through the water inlet pipe, and is guided by the annular tube to spray the inside of the column through the atomizing nozzle, and is guided by the inclined nozzle to form a water flow on the inner wall of the column. At this time, the water flows inside the column, spraying on the metal filter and the inside of the column to cool the exhaust gas, and the water flow carrying the exhaust gas and waste is guided by the outlet pipe and then processed by the water flow treatment end. The installation pipe can be installed with a gas guide connecting pipeline to guide the preliminarily treated exhaust gas into the next process for treatment, which is convenient for preliminary treatment and cooling.

[0020] 2. Through the provision of the first flange and the top cover, the top cover and the bottom cover can be removed through the first flange and the second flange after use, and can also be disassembled and assembled through the flanges through the branch pipe and the connecting pipe. The hatch can be opened to clean and maintain the inside of the column, making overall maintenance convenient, increasing service life, and having a good overall use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the front three-dimensional appearance structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the rear-view stereoscopic appearance structure of the utility model;

[0023] Figure 3 It is a front cross-sectional structural schematic diagram of the utility model;

[0024] Figure 4 For the utility model Figure 3 Enlarged structural diagram at A in the middle.

[0025] In the figure: 1. column; 2. first flange; 3. top cover; 4. valve; 5. water inlet pipe; 6. mounting pipe; 7. bolt hole; 8. hatch; 9. second flange; 10. connecting pipe; 11. third flange; 12. connecting pipe; 13. branch pipe; 14. water outlet pipe; 15. bottom cover; 16. metal filter; 17. extension pipe; 18. spiral plate; 19. branch ring; 20. ring pipe; 21. atomizing nozzle; 22. sealing ring; 23. oblique nozzle. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the implementation scheme of the utility model to clearly and completely describe the technical scheme in the implementation scheme of the utility model. Obviously, the described implementation scheme is only a part of the implementation scheme of the utility model, not all the implementation schemes. Based on the implementation scheme in the utility model, all other implementation schemes obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0027] like Figure 1-Figure 4 As shown, an exhaust gas treatment mechanism for a steelmaking furnace includes a column 1, a top cover 3 is movably installed on the top of the column 1, a bottom cover 15 is movably installed on the bottom of the column 1, a first flange 2 is fixedly installed at the connection between the column 1 and the top cover 3, a second flange 9 is fixedly installed at the connection between the column 1 and the bottom cover 15, a plurality of bolt holes 7 are provided inside the first flange 2 and the second flange 9, a hatch 8 is movably installed on the outside of the column 1, a mounting pipe 6 is fixedly installed on the top of the top cover 3, a water inlet pipe 5 is fixedly sleeved on one side of the top cover 3, the bottom end of the water inlet pipe 5 is connected to a ring pipe 20, and a plurality of mist spray nozzles are movably installed at the bottom end of the ring pipe 20 The outer side of the ring tube 20 is connected with a plurality of inclined nozzles 23, the top and bottom of the column 1 are fixedly installed with sealing rings 22, the inside of the column 1 is fixedly installed with a plurality of branch rings 19, the top of the branch ring 19 is movably installed with a metal filter screen 16, the bottom end of the bottom cover 15 is connected with a connecting pipe 10, the top of the connecting pipe 10 is connected with an extension pipe 17, the bottom of the bottom cover 15 is connected with a water outlet pipe 14, the bottom end of the connecting pipe 10 is connected with a branch pipe 13, the inside of the branch pipe 13 is fixedly installed with a spiral plate 18, the bottom end of the branch pipe 13 is connected with a connecting pipe 12, and the other end of the connecting pipe 12 is fixedly installed with a third flange 11.

[0028] The working principle of the above technical solution is as follows:

[0029] When in use, first connect the device to the exhaust gas collecting end of the steelmaking furnace through the third flange 11, and then connect the water inlet pipe 5 and the water outlet pipe 14 to the water supply end and the filtering treatment end respectively. Then, when the exhaust gas enters the branch pipe 13 through the connecting pipe 12, the spiral guide of the branch pipe 13 applies a rotational force to the gas, and then enters the connecting pipe 10, and enters the column 1 through the guide of the extension pipe 17. At this time, the smoke particles will be filtered by the outer edge of the metal filter 16 under the action of rotation and guide, and the smoke particles are attached. At this time, the water flows through The water inlet pipe 5 enters the interior of the annular tube 20, and is guided by the annular tube 20 to spray the interior of the column 1 through the atomizing nozzle 21, and is guided by the oblique nozzle 23 to form a water flow on the inner wall of the column 1. At this time, the water flows inside the column 1, spraying on the metal filter 16 and the interior of the column 1 to cool the exhaust gas, and the water flow carrying the exhaust gas and waste is guided by the outlet pipe 14 and then processed by the water flow treatment end, and the installation pipe 6 can be installed with a gas guide connecting pipeline to guide the preliminarily treated exhaust gas into the next process for treatment, so as to facilitate preliminary treatment and cooling.

[0030] In another embodiment, Figure 1 and Figure 2 As shown, the bolt holes 7 are evenly distributed in a circumference inside the first flange 2 and the second flange 9 , and bolts are inserted in a staggered manner inside the bolt holes 7 .

[0031] The bolt holes 7 are used to fix the first flange 2 and the second flange 9 at the use position by bolts, and the redundant holes can be used to install auxiliary structures, thereby improving the overall use effect.

[0032] In another embodiment, Figure 1-Figure 4 As shown, valves 4 are installed inside the water inlet pipe 5 and the water outlet pipe 14 , and the water outlet pipe 14 is connected to the bottom of the extension pipe 17 and the opposite side of the bottom cover 15 .

[0033] The water flows through the interior of the column 1 to cool the interior, making it easier for the water to be discharged through the outlet pipe 14.

[0034] In another embodiment, Figure 3 and Figure 4 As shown, the annular tube 20 is fixedly installed inside the top cover 3 , and the atomizing nozzle 21 and the oblique nozzle 23 are evenly connected and distributed on the outside of the annular tube 20 in a circumferential manner.

[0035] The ring tube 20 is fixed in the use position, which is convenient for fixation, and the uniform distribution of the atomizing nozzle 21 and the oblique nozzle 23 facilitates stability.

[0036] In another embodiment, Figure 3 and Figure 4As shown, the top cover 3 and the bottom cover 15 are both sleeved on the outside of the column barrel 1, and the sealing ring 22 is located at the connection between the column barrel 1 and the top cover 3 and the bottom cover 15.

[0037] It is easy to seal to prevent water from flowing out, and it is convenient to guide the convection water to reduce leakage.

[0038] In another embodiment, Figure 3 As shown, the extension pipe 17 extends to penetrate the interior of the bottom cover 15 , and a conical sealing ring is provided at the top of the metal filter screen 16 .

[0039] The extension pipe 17 extends the airflow and limits the bottom space of the bottom cover 15 so as to guide the water flow.

[0040] In another embodiment, Figure 1-Figure 3 As shown, the connecting pipe 10, the branch pipe 13 and the connecting pipe 12 are fixedly installed by flange rings.

[0041] By setting the first flange 2 and the top cover 3, the top cover 3 and the bottom cover 15 can be removed through the first flange 2 and the second flange 9 after use, and can also be disassembled and assembled through the flanges through the branch pipe 13 and the connecting pipe 12. The hatch 8 can be opened to clean and maintain the inside of the column tube 1, which makes the overall maintenance convenient, increases the service life, and has a good overall use effect.

[0042] The working principle and use process of the utility model are as follows: when in use, firstly, the device is connected to the exhaust gas collecting end of the steelmaking furnace through the third flange 11, and then the water inlet pipe 5 and the water outlet pipe 14 are connected to the water supply end and the filtering treatment end respectively, and then when the exhaust gas enters the branch pipe 13 through the connecting pipe 12, the spiral diversion of the branch pipe 13 applies a rotational force to the gas, and then enters the connecting pipe 10, and enters the column 1 through the diversion of the extension pipe 17. At this time, the smoke particles will be filtered by the outer edge of the metal filter 16 under the action of rotation and diversion, and the smoke particles are attached. At this time, the water flows into the annular pipe 20 through the water inlet pipe 5, and is diverted through the annular pipe 20 to spray the inside of the column 1 through the atomizing nozzle 21, and is diverted through the oblique nozzle 23. A water flow is formed on the inner wall of the column 1. At this time, the water flows inside the column 1, sprays on the metal filter 16 and the inside of the column 1, cools the exhaust gas, and passes the water flow carrying the exhaust gas and waste through the outlet pipe 14 and then is processed through the water flow processing end. The installation pipe 6 can be installed with an air guide connecting pipeline to guide the preliminarily treated exhaust gas into the next process for processing, which is convenient for preliminary treatment and cooling. Through the set first flange 2 and top cover 3, the top cover 3 and the bottom cover 15 can be removed through the first flange 2 and the second flange 9 after use, and can also be disassembled and assembled through the flanges through the branch pipe 13 and the connecting pipe 12. The hatch 8 can be opened to clean and maintain the inside of the column 1, which makes the overall maintenance convenient, improves the service life, and has a good overall use effect.

[0043] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An exhaust gas treatment mechanism for a steelmaking furnace, comprising a column (1), characterized in that: A top cover (3) is movably mounted on the top of the column (1), a bottom cover (15) is movably mounted on the bottom of the column (1), a first flange (2) is fixedly mounted on the connection between the column (1) and the top cover (3), a second flange (9) is fixedly mounted on the connection between the column (1) and the bottom cover (15), a plurality of bolt holes (7) are provided inside the first flange (2) and the second flange (9), a hatch (8) is movably mounted on the outside of the column (1), a mounting pipe (6) is fixedly mounted on the top of the top cover (3), a water inlet pipe (5) is fixedly sleeved on one side of the top cover (3), the bottom end of the water inlet pipe (5) is connected to a ring pipe (20), a plurality of atomizing nozzles (21) are movably mounted on the bottom end of the ring pipe (20), and the ring pipe (20) is provided with a plurality of atomizing nozzles (21) The outer side of the column (20) is connected to a plurality of inclined nozzles (23), the top and bottom of the column (1) are fixedly installed with sealing rings (22), the interior of the column (1) is fixedly installed with a plurality of branch rings (19), the top of the branch ring (19) is movably installed with a metal filter (16), the bottom end of the bottom cover (15) is connected to a connecting pipe (10), the top of the connecting pipe (10) is connected to an extension pipe (17), the bottom of the bottom cover (15) is connected to a water outlet pipe (14), the bottom end of the connecting pipe (10) is connected to a branch pipe (13), the interior of the branch pipe (13) is fixedly installed with a spiral plate (18), the bottom end of the branch pipe (13) is connected to a connecting pipe (12), and the other end of the connecting pipe (12) is fixedly installed with a third flange (11).

2. The exhaust gas treatment mechanism for a steelmaking furnace according to claim 1, characterized in that: The bolt holes (7) are evenly distributed in a circumferential manner inside the first flange (2) and the second flange (9), and bolts are inserted in a staggered manner inside the bolt holes (7).

3. The exhaust gas treatment mechanism for a steelmaking furnace according to claim 1, characterized in that: Valves (4) are installed inside the water inlet pipe (5) and the water outlet pipe (14), and the water outlet pipe (14) is connected to the bottom of the extension pipe (17) and the opposite side of the bottom cover (15).

4. The exhaust gas treatment mechanism for a steelmaking furnace according to claim 1, characterized in that: The annular tube (20) is fixedly mounted inside the top cover (3), and the atomizing nozzle (21) and the oblique nozzle (23) are evenly connected and distributed on the outside of the annular tube (20) in a circumferential manner.

5. The exhaust gas treatment mechanism for a steelmaking furnace according to claim 1, characterized in that: The top cover (3) and the bottom cover (15) are both sleeved on the outside of the column (1), and the sealing ring (22) is located at the connection between the column (1) and the top cover (3) and the bottom cover (15).

6. The exhaust gas treatment mechanism for a steelmaking furnace according to claim 1, characterized in that: The extension tube (17) extends to penetrate the interior of the bottom cover (15), and a conical sealing ring is provided at the top end of the metal filter screen (16).

7. The exhaust gas treatment mechanism for a steelmaking furnace according to claim 1, characterized in that: The connecting pipe (10), the branch pipe (13) and the connecting pipe (12) are fixedly installed via flange rings.

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