Waste gas treatment device for ferrous metallurgy

Abstract

The utility model relates to the technical field of waste gas treatment, in particular to a waste gas treatment device for ferrous metallurgy, which comprises a metallurgical waste gas treatment box, a gas inlet pipe communicated with the left side of the metallurgical waste gas treatment box, a flue gas particle filtering mechanism arranged on the front side of the metallurgical waste gas treatment box in a sliding manner, and a transverse breather pipe communicated with the right side of the metallurgical waste gas treatment box, the side edge of the transverse breather pipe is connected with a vertical through pipe, and the upper side of the vertical through pipe is provided with a desulfurization treatment mechanism; the desulfurization treatment mechanism comprises an annular cavity, a plurality of branch pipes are uniformly distributed and mounted on the inner side of the annular cavity, atomizing nozzles are fixedly mounted at the end parts of the branch pipes, a purified water input pipe and a limestone solution input pipe are fixedly mounted on the outer side wall of the annular cavity, and a first valve is mounted on the purified water input pipe. According to the utility model, the desulfurization treatment mechanism is arranged, so that the desulfurization effect on sulfide gas in gas is realized, pollutants in the gas treated by the desulfurization treatment mechanism are effectively treated, and the practicability is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to waste gas treatment technical field especially steel metallurgy waste gas treatment device. BACKGROUND

[0002] Steel metallurgy is an industrial process that converts iron ore or scrap into steel by high-temperature smelting, and plays an important role in modern society. Its products are widely used in construction, machinery, automobiles, ships and other fields. Steel metallurgy will produce polluting gas, which needs to be filtered and treated to meet the emission requirements.

[0003] Referring to the utility model patent with authorized announcement number CN215388491U, a kind of steel metallurgy waste gas environmental protection treatment device is disclosed, the pipeline is connected by elbow pipe vertical section and horizontal section, the vertical section of the pipeline is equipped with the dust collecting electrode of hexagonal structure, and it is arranged in honeycomb shape in pipeline, and it is connected on the net frame below the dust collecting electrode, the upper side of dust collecting electrode is connected with corona electrode frame by connecting rod, the corona electrode frame is connected with one columnar corona electrode of equal length with dust collecting electrode in the direction of each dust collecting electrode inner cavity center line.

[0004] The above-mentioned patent sets up waste gas environmental protection treatment device, which aims to filter and adsorb the particles in flue gas. It is difficult to filter the sulfide gas generated in steel metallurgy. The main polluting gas in metallurgical flue gas is sulfide gas. Therefore, the waste gas treated by the waste gas environmental protection treatment device proposed in the above-mentioned patent is difficult to be desulfurized effectively. Therefore, we propose a steel metallurgy waste gas treatment device to solve the above-mentioned problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the shortcomings in the prior art, and proposes a steel metallurgy waste gas treatment device.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] The steel metallurgy waste gas treatment device comprises a metallurgical waste gas treatment box, a gas inlet pipe is communicated and installed on the left side of the metallurgical waste gas treatment box, a flue gas particle filtering mechanism is slidably arranged on the front side of the metallurgical waste gas treatment box, a horizontal air pipe is communicated and installed on the right side of the metallurgical waste gas treatment box, a vertical pipe is connected to the side of the horizontal air pipe, and a desulfurization treatment mechanism is installed on the upper side of the vertical pipe; the desulfurization treatment mechanism comprises a ring cavity, a plurality of branch pipes are uniformly installed on the inner side of the ring cavity, atomizing nozzles are fixedly installed at the end of the branch pipes, a clean water inlet pipe and a limestone solution inlet pipe are fixedly installed on the outer wall of the ring cavity, a first valve is installed on the clean water inlet pipe, a second valve is installed on the limestone solution inlet pipe, and the inner side of the ring cavity is a hollow structure.

[0008] Preferably, the flue gas particle filtering mechanism includes a pull plate, an ear seat is fixedly installed on the side of the pull plate, the ear seat is screwed with the metallurgical waste gas treatment box, an inner frame is fixedly installed on the inner side of the pull plate, the inner frame is in sliding contact with the inner wall of the metallurgical waste gas treatment box, two sliding grooves are formed on the inner side of the inner frame, and a filter screen is slidingly installed in the sliding grooves.

[0009] Preferably, the inner frame is provided with a sealing ring on the side.

[0010] Preferably, a handle is fixedly installed on the outer side of the pull plate.

[0011] Preferably, a base is fixedly installed at the bottom of the vertical pipe, a discharge pipe is communicated and installed on the side of the vertical pipe, and an electromagnetic valve is installed on the discharge pipe.

[0012] Preferably, the inner side end of the discharge pipe is located at the lowest part of the bottom of the vertical pipe.

[0013] Preferably, the ring cavity is provided with an air outlet pipe, and the ring cavity is screwed between the air outlet pipe and the vertical pipe.

[0014] Compared with the related art, the steel metallurgical waste gas treatment device has the following advantages

[0015] Beneficial effects:

[0016] In the steel metallurgical waste gas treatment device, the desulfurization treatment mechanism is arranged, the gas treated by the metallurgical waste gas treatment box is discharged into the vertical pipe, the gas in the vertical pipe continues to be desulfurized by the desulfurization treatment mechanism, the ring cavity is used as the main structure in the desulfurization treatment mechanism, the ring cavity is a hollow structure, branch pipes are uniformly connected to the inner side of the ring cavity, and atomizing nozzles are installed at the ends of the branch pipes, the limestone solution input pipe arranged on the outer side of the ring cavity inputs the limestone solution into the cavity of the ring cavity, the limestone solution is then input into the atomizing nozzles through the branch pipes on the inner side, the atomizing solution particles are sprayed in the ring cavity under the action of the atomizing nozzles, when the gas passes through the inner side of the ring cavity, the SO2 and other sulfide gases in the gas react with the limestone solution to generate CaCO3 which falls to the bottom of the vertical pipe with the solution, the desulfurization effect on the sulfide gas in the gas is realized, the pollutants in the gas treated by the desulfurization treatment mechanism are effectively treated, and the practicability is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The utility model provides a three -dimensional structure schematic of steel metallurgical waste gas treatment device Figure One ;

[0018] Figure 2 The utility model provides a three -dimensional structure schematic of steel metallurgical waste gas treatment deviceFigure Two ;

[0019] Figure 3 Part of the steel metallurgical waste gas treatment device of the utility model is shown in the exploded view of the three-dimensional structure Figure One ;

[0020] Figure 4 Part of the steel metallurgical waste gas treatment device of the utility model is shown in the exploded view of the three-dimensional structure Figure Two ;

[0021] Figure 5 Part of the steel metallurgical waste gas treatment device of the utility model is shown in the exploded view of the three-dimensional structure Figure Three ;

[0022] Figure 6 Part of the steel metallurgical waste gas treatment device of the utility model is shown in the exploded view of the three-dimensional structure Figure Four .

[0023] In the figure: 1, metallurgical waste gas treatment box; 2, air inlet pipe; 3, horizontal air pipe; 4, flue gas particle filtering mechanism; 41, pull plate; 42, ear seat; 43, inner frame; 44, sealing ring; 45, sliding groove; 46, filter screen; 47, handle; 5, vertical pipe; 6, desulfurization treatment mechanism; 61, ring cavity; 62, clean water input pipe; 63, limestone solution input pipe; 64, first valve; 65, second valve; 66, branch pipe; 67, atomizing nozzle; 7, air outlet pipe; 8, base; 9, discharge pipe; 10, electromagnetic valve. DETAILED DESCRIPTION

[0024] The utility model will be further described below in combination with the drawings and embodiments.

[0025] Referring to Figures 1-6 , the steel metallurgical waste gas treatment device comprises: a metallurgical waste gas treatment box 1, an air inlet pipe 2 is communicated and installed on the left side of the metallurgical waste gas treatment box 1, a flue gas particle filtering mechanism 4 is slidably arranged on the front side of the metallurgical waste gas treatment box 1, a horizontal air pipe 3 is communicated and installed on the right side of the metallurgical waste gas treatment box 1, a vertical pipe 5 is connected to the side of the horizontal air pipe 3, and a desulfurization treatment mechanism 6 is installed on the upper side of the vertical pipe 5.

[0026] In the present manner, the desulfurization treatment mechanism 6 comprises a ring cavity 61, a plurality of branch pipes 66 are uniformly installed on the inner side of the ring cavity 61, atomizing nozzles 67 are fixedly installed at the end portions of the branch pipes 66, a clean water input pipe 62 and a limestone solution input pipe 63 are fixedly installed on the outer side wall of the ring cavity 61, a first valve 64 is installed on the clean water input pipe 62, a second valve 65 is installed on the limestone solution input pipe 63, and the inner side of the ring cavity 61 is a hollow structure.

[0027] Through the above manner, the setting of the clean water input pipe 62, when the limestone solution is introduced into the inside of the ring cavity 61, the pipe wall will be bonded, and the inside of the ring cavity 61 and the inner wall of the vertical through pipe 5 will form an attached and accumulated layer over a long period of use. After each desulfurization work is completed, the clean water input pipe 62 can inject clean water into the inside of the ring cavity 61 for cleaning, thereby avoiding the bonding of the limestone solution on the pipe wall.

[0028] In the present manner, the ring cavity 61 is provided with the gas outlet pipe 7 at the top, and the ring cavity 61 is screw-connected and installed between the gas outlet pipe 7 and the vertical through pipe 5.

[0029] Through the above manner, the ring cavity 61 is screw-connected and installed between the gas outlet pipe 7 and the vertical through pipe 5, so that the ring cavity 61 can be disassembled from between the gas outlet pipe 7 and the vertical through pipe 5, thereby facilitating the later maintenance work.

[0030] In the present manner, the flue gas particle filtering mechanism 4 includes a pull plate 41, the pull plate 41 is fixedly installed with an ear seat 42 at the side, the ear seat 42 is screw-connected with the metallurgical waste gas treatment box 1, the pull plate 41 is fixedly installed with an inner frame 43 at the inside, the inner frame 43 is in sliding contact with the inner wall of the metallurgical waste gas treatment box 1, and two sliding grooves 45 are formed in the inside of the inner frame 43, and a filtering screen 46 is slidingly installed in the sliding grooves 45.

[0031] Through the above manner, when the waste gas generated by the steel metallurgy passes through the inside of the metallurgical waste gas treatment box 1, the solid particles in the waste gas are filtered under the action of the two filtering screens 46 installed in the inside of the inner frame 43, thereby achieving the preliminary purification treatment of the waste gas.

[0032] In the present manner, the inner frame 43 is installed with a sealing ring 44 at the side.

[0033] Through the above manner, the sealing ring 44 is provided, which ensures the sealing property of the sliding joint between the inner frame 43 and the inside of the metallurgical waste gas treatment box 1, thereby avoiding the escape of the waste gas from the filtering effect of the filtering screen 46 through the gap.

[0034] In the present manner, the pull plate 41 is fixedly installed with a handle 47 at the outside.

[0035] Through the above manner, the handle 47 is provided, which facilitates the pulling of the pull plate 41 in daily use.

[0036] In the present manner, the vertical through pipe 5 is fixedly installed with a base 8 at the bottom, and the vertical through pipe 5 is continuously installed with a discharge pipe 9 at the side, the discharge pipe 9 is installed with an electromagnetic valve 10, and the inside end of the discharge pipe 9 is located at the lowest part of the bottom of the vertical through pipe 5.

[0037] Through the above manner, the inside end of the discharge pipe 9 is located at the lowest part of the bottom of the vertical through pipe 5, so that the discharge pipe 9 can completely discharge the waste at the bottom of the vertical through pipe 5.

[0038] The working principle of the waste gas treatment device for steel metallurgy provided by the utility model is as follows:

[0039] In use, the waste gas generated in steel metallurgy is introduced into the metallurgical waste gas treatment box 1 through the air inlet pipe 2, and the waste gas flows to the right side of the metallurgical waste gas treatment box 1, and the solid particles in the waste gas are filtered out through the double filtering effect of the two filter screens 46 installed on the inner side of the inner frame 43, and the subsequent waste gas enters the vertical duct 5 through the horizontal air pipe 3, the second valve 65 is opened, the limestone solution is input into the annular cavity 61 from the limestone solution input pipe 63, the limestone solution is input into the inside of the atomizing nozzle 67 through the branch pipe 66 on the inner side of the annular cavity 61, and the atomizing solution particles are sprayed on the inner side of the annular cavity 61 under the action of the atomizing nozzle 67, when the gas enters the inside of the annular cavity 61 from the vertical duct 5, the SO2 and other sulfide gases in the gas react with the limestone solution, and CaCO3 is generated and falls to the bottom of the vertical duct 5 with the solution, so that the desulfurization effect of the sulfide gas in the gas is realized, and the desulfurized waste gas is discharged through the upper air outlet pipe 7.

[0040] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection range of the utility model.

Claims

1. An exhaust gas treatment device for steel metallurgy, characterized by, The application relates to a metallurgical waste gas treatment box (1), which is provided with an air inlet pipe (2) on the left side, a flue gas particle filtering mechanism (4) on the front side, a transverse air pipe (3) on the right side, a vertical air pipe (5) connected to the side of the transverse air pipe (3), and a desulfurization treatment mechanism (6) arranged on the upper side of the vertical air pipe (5). The desulfurization treatment mechanism (6) comprises a ring cavity (61), a plurality of branch pipes (66) are uniformly arranged on the inner side of the ring cavity (61), atomizing nozzles (67) are fixedly arranged at the ends of the branch pipes (66), a clean water input pipe (62) and a limestone solution input pipe (63) are fixedly arranged on the outer side wall of the ring cavity (61), a first valve (64) is arranged on the clean water input pipe (62), a second valve (65) is arranged on the limestone solution input pipe (63), and the ring cavity (61) is in a hollow structure.

2. The exhaust gas treatment device for steel metallurgy according to claim 1, characterized by, The flue gas particle filtering mechanism (4) comprises a pull plate (41), ear seats (42) are fixedly arranged on the side edges of the pull plate (41) and are screwed with the metallurgical waste gas treatment box (1), an inner frame (43) is fixedly arranged on the inner side of the pull plate (41) and is in sliding contact with the inner wall of the metallurgical waste gas treatment box (1), two sliding grooves (45) are formed in the inner side of the inner frame (43), and filter screens (46) are slidably arranged in the sliding grooves (45).

3. The steel metallurgical off-gas treatment device according to claim 2, characterized by, Sealing rings (44) are arranged on the side edges of the inner frame (43).

4. The exhaust gas treatment device for steelmaking according to claim 2, characterized by, A handle (47) is fixedly arranged on the outer side of the pull plate (41).

5. The exhaust gas treatment device for steelmaking according to claim 1, characterized by, A base (8) is fixedly arranged at the bottom of the vertical air pipe (5), a discharge pipe (9) is communicatively arranged on the side edge of the vertical air pipe (5), and an electromagnetic valve (10) is arranged on the discharge pipe (9).

6. The steel metallurgical off-gas treatment device according to claim 5, characterized by The inner side end of the discharge pipe (9) is located at the lowest position of the bottom of the vertical air pipe (5).

7. The steel metallurgical off-gas treatment device according to claim 1, characterized by, An air outlet pipe (7) is arranged at the top of the ring cavity (61), and the ring cavity (61) is screwed between the air outlet pipe (7) and the vertical air pipe (5).

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