Furnace top gas discharging device of shaft furnace

Abstract

The utility model relates to the technical field of gas discharge devices, in particular to a shaft furnace top gas discharge device which comprises a treatment box, a filter barrel, a mounting mechanism, a collecting pipe, a gas inlet mechanism, a first cavity and a cleaning mechanism, a filter box is fixedly arranged on the treatment box, a water tank is formed in the inner bottom wall of the treatment box, and an absorbent is filled in the water tank; the filter barrel is arranged in the filter box and is in contact with the inner top wall of the filter box, the mounting mechanism is arranged in the filter barrel and is used for mounting and fixing the filter barrel, the collecting pipe is arranged on the side wall of the filter box in a penetrating manner and is communicated with the filter barrel, and the gas inlet mechanism is arranged between the treatment box and the filter box and is used for introducing filtered gas into the water tank. The first cavity is arranged to be annular, the first cavity is formed in the filter box, a plurality of ventilation openings are formed between the first cavity and the treatment box, and by means of the technical scheme, the problem that in the related technology, the treatment efficiency of sulfide in coal gas is low is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a coal gas discharging device technical field, concretely relates to a vertical furnace roof coal gas discharging device. BACKGROUND

[0002] The vertical furnace roof coal gas discharging device is one of the key equipment in the vertical furnace ironmaking process. It is mainly used for safely and effectively discharging the coal gas generated at the vertical furnace roof, which contains combustible gas such as carbon monoxide and other impurities. A large amount of furnace roof coal gas is generated during the smelting process of the vertical furnace, and its reasonable discharge is of great significance for furnace pressure control, coal gas recycling and environmental protection.

[0003] The vertical furnace roof coal gas discharging device in the prior art mostly includes a gas collecting pipe, a diffuser valve, a water seal device and an induced draft fan. The furnace roof coal gas is first generated in the furnace and then enters the gas collecting pipe for centralized collection. When the furnace pressure rises to a certain degree or the coal gas needs to be discharged according to the production process, the diffuser valve is opened, and the induced draft fan works simultaneously to generate negative pressure in the gas collecting pipe to extract the coal gas. The coal gas can be preliminarily treated and purified by the water seal device during the discharge process.

[0004] However, a certain amount of smoke and sulfides are contained in the coal gas. If the coal gas is only purified by the water seal device during the exhaust process, the treatment efficiency of the sulfides in the coal gas is low, and the part of the sulfides that is not completely absorbed is discharged into the surrounding environment, which can easily pollute the surrounding environment. SUMMARY

[0005] The utility model provides a vertical furnace roof coal gas discharging device, solveed the problem of low treatment efficiency of sulfides in coal gas in the related art.

[0006] The technical scheme of the utility model is as follows: a vertical furnace roof coal gas discharging device, comprising a treatment box, a filter barrel, a mounting mechanism, a collecting pipe, an air inlet mechanism, a first cavity and a cleaning mechanism.

[0007] The processing box is fixedly provided with a filter box, an inner bottom wall of the processing box is provided with a water tank, an absorbent is filled in the water tank, the filter barrel is arranged in the filter box, the filter barrel is in contact with an inner top wall of the filter box, the mounting mechanism is arranged in the filter barrel and is used for mounting and fixing the filter barrel, the collecting pipe is arranged through a side wall of the filter box, the collecting pipe is in communication with the filter barrel, the air inlet mechanism is arranged between the processing box and the filter box and is used for introducing filtered coal gas into the water tank, the first cavity is arranged in an annular shape and is arranged in the filter box, a plurality of air vents are arranged between the first cavity and the processing box, an exhaust port is arranged on a side wall of the first cavity, and the cleaning mechanism is arranged in the filter box and is used for cleaning the filter barrel.

[0008] Preferably, the mounting mechanism comprises:

[0009] A mounting disc is arranged in the filter box, a plurality of mounting columns are fixedly arranged between a side wall of the mounting disc and an inner wall of the filter box.

[0010] A mounting hole is arranged on an inner top wall of the filter box, a mounting seat is slidably arranged in the mounting hole, and a mounting plate is fixedly arranged on a side wall of the mounting seat.

[0011] A mounting bolt is arranged through the mounting plate and the side wall of the filter box in a threaded manner.

[0012] Further, an installation groove is arranged on the mounting seat, the filter barrel is arranged between a groove bottom of the installation groove and the mounting disc, and the filter barrel is in contact with the groove bottom of the installation groove and the mounting disc, respectively.

[0013] Further, the air inlet mechanism comprises:

[0014] A first air inlet pipe is rotatably arranged on a groove bottom of the water tank, the first air inlet pipe penetrates an inner top wall of the processing box and extends into the filter box;

[0015] A plurality of second air inlet pipes are in communication with a side wall of the first air inlet pipe, one end of the second air inlet pipe away from the first air inlet pipe is sealed, and a plurality of air inlet nozzles are in communication with a side wall of the second air inlet pipe.

[0016] Further, the cleaning mechanism comprises:

[0017] A cleaning column is rotatably arranged on an inner top wall of the filter box.

[0018] The cleaning frame is provided with cleaning brushes on the side wall.

[0019] The rotating mechanism is arranged on the filter box and used for driving the cleaning column to rotate.

[0020] The rotating mechanism comprises:

[0021] The first gear ring is fixedly arranged on the cleaning column;

[0022] The first gear is rotatably arranged on the mounting seat and engaged with the first gear ring;

[0023] The first motor is fixedly arranged on the mounting seat and fixedly connected with the first gear.

[0024] The cleaning column penetrates the filter barrel and the mounting disc, the first fixing ring is fixed on the side wall of the cleaning column, the second fixing ring is fixed on the side wall of the first air inlet pipe, and a plurality of fixing columns are fixed between the first fixing ring and the second fixing ring.

[0025] A plurality of stirring rods are fixed on the first air inlet pipe.

[0026] An annular positioning pipe is fixed in the first cavity, a plurality of atomizing nozzles are arranged on the inner bottom wall of the positioning pipe, a water pump is fixed on the side wall of the processing box, the input end of the water pump is communicated with the processing box, and the output end of the water pump is communicated with the positioning pipe.

[0027] A water changing opening is arranged on the side wall of the processing box, and a water changing control valve is arranged in the water changing opening.

[0028] The working principle and beneficial effects of the utility model are as follows:

[0029] 1. The filter barrel and the mounting mechanism are arranged, so that the smoke in the coal gas can be filtered through the filter barrel, then the mounting seat can be mounted and dismounted through the rotation of the mounting bolt, and the smoke in the filter barrel can be cleaned.

[0030] 2. The air inlet mechanism is arranged, the filtered coal gas can be introduced into the absorbent in the water tank through the first air inlet pipe, the second air inlet pipe and the air inlet nozzle, and the sulfide in the coal gas can be absorbed by the absorbent.

[0031] 3. In this utility model, through the setting of the cleaning mechanism, the operation of the first motor can drive the first gear to rotate, and at the same time, through the meshing of the first gear and the first rack, the cleaning column can be driven to rotate, thereby driving the cleaning brush on the cleaning frame to clean the inner wall of the filter barrel, thereby improving the filtration efficiency of the filter barrel for coal gas.

[0032] 4. In this utility model, by setting up a fixed column and a stirring rod, the rotation of the cleaning column can drive the first air inlet pipe to rotate through the transmission of the fixed column, thereby causing the second air inlet pipe and the stirring rod to move around the first air inlet pipe, thereby adjusting the air inlet position and stirring the absorbent, thereby improving the absorption efficiency of the absorbent for coal gas.

[0033] 5. In this utility model, by setting up an atomizing nozzle and a water pump, the water pump can spray water mist of absorbent into the first cavity through the atomizing nozzle, thereby further treating the sulfides in the coal gas during the process of the coal gas being vented through the first cavity.

[0034] 6. In this utility model, the arrangement of the processing box, filter barrel, installation mechanism, collection pipe, air inlet mechanism, first cavity, and cleaning mechanism facilitates the adjustment of the air inlet position and the stirring rod through the movement of the second air inlet pipe and the stirring rod, thereby improving the treatment efficiency of the absorbent for coal gas. At the same time, the absorbent can be sprayed into the coal gas in the first cavity through the atomizing nozzle, thus solving the problem of low treatment efficiency of sulfides in coal gas in related technologies. Attached Figure Description

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0036] Figure 1 This is a schematic diagram of the structure of this utility model;

[0037] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0038] Figure 3 This is a schematic diagram of the cleaning mechanism of this utility model;

[0039] Figure 4 This is a schematic diagram of the air intake mechanism of this utility model.

[0040] In the diagram: 1. Processing box; 2. Filter box; 3. Water tank; 4. Filter barrel; 5. Collection pipe; 6. First cavity; 7. Mounting plate; 8. Mounting column; 9. Mounting base; 10. Mounting bolt; 11. First air inlet pipe; 12. Second air inlet pipe; 13. Cleaning column; 14. Cleaning frame; 15. First gear ring; 16. First gear; 17. First motor; 18. First fixing ring; 19. Second fixing ring; 20. Fixing column; 21. Stirring rod; 22. Positioning pipe; 23. Water pump. Detailed Implementation

[0041] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0042] like Figures 1-4 As shown, this embodiment proposes a vertical furnace top gas emission device, including a treatment box 1, a filter barrel 4, an installation mechanism, a collection pipe 5, an air inlet mechanism, a first cavity 6, and a cleaning mechanism. A filter box 2 is fixedly installed on the treatment box 1. A water tank 3 is opened in the inner bottom wall of the treatment box 1, and the water tank 3 is filled with an absorbent. The filter barrel 4 is installed in the filter box 2 and contacts the inner top wall of the filter box 2. The installation mechanism is installed in the filter barrel 4 for installing and fixing the filter barrel 4. The collection pipe 5 is installed through the side wall of the filter box 2 and communicates with the filter barrel 4. The air inlet mechanism is installed between the treatment box 1 and the filter box 2 for introducing the filtered gas into the water tank 3. The first cavity 6 is annular and is opened in the filter box 2. Multiple vents are opened between the first cavity 6 and the treatment box 1. An exhaust port is opened in the side wall of the first cavity 6. The cleaning mechanism is installed in the filter box 2 for cleaning the filter barrel 4. A water exchange port is opened in the side wall of the treatment box 1, and a water exchange control valve is installed in the water exchange port.

[0043] Reference Figures 1-3The installation mechanism includes an installation plate 7, an installation port, and installation bolts 10. The installation plate 7 is set inside the filter box 2. Multiple installation columns 8 are fixedly installed between the side wall of the installation plate 7 and the inner wall of the filter box 2. The installation port is opened on the inner top wall of the filter box 2. An installation seat 9 is slidably installed inside the installation port. An installation plate is fixedly installed on the side wall of the installation seat 9. The installation bolts 10 are threaded through and installed between the installation plate and the side wall of the filter box 2. An installation groove is opened on the installation seat 9. The filter barrel 4 is set between the bottom of the installation groove and the installation plate 7. The filter barrel 4 is in contact with the bottom of the installation groove and the installation plate 7 respectively. The filter barrel 4 can filter the dust in the gas. Afterwards, the installation seat 9 can be installed and removed by rotating the installation bolts 10, which facilitates the cleaning of the dust in the filter barrel 4.

[0044] Reference Figures 2-4 The air intake mechanism includes a first air intake pipe 11 and a second air intake pipe 12. The first air intake pipe 11 is rotatably disposed at the bottom of the water tank 3. The first air intake pipe 11 penetrates the inner top wall of the treatment box 1 and extends into the filter box 2. Multiple second air intake pipes 12 are connected to the side wall of the first air intake pipe 11. The end of the second air intake pipe 12 away from the first air intake pipe 11 is sealed. Multiple air intake nozzles are connected to the side wall of the second air intake pipe 12. The filtered coal gas can be introduced into the absorbent in the water tank 3 through the first air intake pipe 11, the second air intake pipe 12 and the air intake nozzles, so that the sulfides in the coal gas can be absorbed by the absorbent.

[0045] Reference Figure 3 and Figure 4 The cleaning mechanism includes a cleaning column 13, a cleaning frame 14, and a rotating mechanism. The cleaning column 13 is rotatably mounted on the inner top wall of the filter box 2. Multiple cleaning frames 14 are fixedly mounted on the side wall of the cleaning column 13. Cleaning bristles are evenly distributed on the side wall of the cleaning frame 14. The rotating mechanism is mounted on the filter box 2 and is used to drive the cleaning column 13 to rotate. The rotating mechanism includes a first gear ring 15, a first gear 16, and a first motor 17. The first gear ring 15 is fixedly mounted on the cleaning column 13. The first gear 16 is rotatably mounted on the mounting base 9 and meshes with the first gear ring 15. The first motor 17 is fixedly mounted on the mounting base 9 and its output end is fixedly connected to the first gear 16. The operation of the first motor 17 can drive the first gear 16 to rotate. At the same time, the meshing of the first gear 16 with the first rack can drive the cleaning column 13 to rotate, thereby driving the cleaning bristles on the cleaning frame 14 to clean the inner wall of the filter box 4, thereby improving the filtration efficiency of the filter box 4 for coal gas.

[0046] Reference Figures 2-4, The cleaning column 13 penetrates through the filter barrel 4 and the mounting disc 7, the first fixed ring 18 is fixed on the side wall of the cleaning column 13, the second fixed ring 19 is fixed on the side wall of the first air inlet pipe 11, a plurality of fixed columns 20 are fixed between the first fixed ring 18 and the second fixed ring 19, a plurality of stirring rods 21 are fixed on the first air inlet pipe 11, the rotation of the cleaning column 13 can drive the first air inlet pipe 11 to rotate through the conduction of the fixed column 20, so that the second air inlet pipe 12 and the stirring rod 21 move around the first air inlet pipe 11, thereby adjusting the air inlet position and stirring the absorbent, thereby improving the processing efficiency of the absorbent on the coal gas.

[0047] With reference to Figure 2 With Figure 3 , The first cavity 6 is fixedly provided with an annular positioning pipe 22, a plurality of atomizing nozzles are communicated on the inner bottom wall of the positioning pipe 22, and a water pump 23 is fixedly arranged on the side wall of the treatment box 1. The input end of the water pump 23 is communicated with the treatment box 1, the output end of the water pump 23 is communicated with the positioning pipe 22, and the working of the water pump 23 can spray water mist of the absorbent into the first cavity 6 through the atomizing nozzles, so that the sulfides in the coal gas can be further treated during the exhaust process of the coal gas through the first cavity 6.

[0048] In this embodiment, the operator connects the collecting pipe 5 with the top of the shaft furnace, and then uses the air blower and connects the input end of the air blower with the exhaust port. The working of the air blower can generate negative pressure in the first cavity 6, so that the coal gas in the shaft furnace can be introduced into the filter box 2 through the collecting pipe 5. In this process, the smoke in the coal gas can be filtered through the filter barrel 4. In the filtering process, the operator controls the working of the first motor 17, the working of the first motor 17 can drive the first gear 16 to rotate, and the meshing of the first gear 16 and the first rack can drive the cleaning column 13 to rotate, thereby driving the cleaning brush on the cleaning frame 14 to clean the inner wall of the filter barrel 4, thereby improving the filtering efficiency of the filter barrel 4 on the coal gas. The filtered coal gas can be introduced into the absorbent in the water tank 3 through the first air inlet pipe 11, the second air inlet pipe 12 and the air inlet nozzle, so that the sulfides in the coal gas can be absorbed by the absorbent. In the absorption process, the rotation of the cleaning column 13 can drive the first air inlet pipe 11 to rotate through the conduction of the fixed column 20, so that the second air inlet pipe 12 and the stirring rod 21 move around the first air inlet pipe 11, thereby adjusting the air inlet position and stirring the absorbent, thereby improving the processing efficiency of the absorbent on the coal gas. Then the coal gas can be discharged through the first cavity 6 and the exhaust port. In this process, the operator controls the working of the water pump 23, and the working of the water pump 23 can spray water mist of the absorbent into the first cavity 6 through the atomizing nozzles, so that the sulfides in the coal gas can be further treated during the exhaust process of the coal gas through the first cavity 6.

[0049] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A vertical furnace top gas discharge device, comprising a treatment box (1), a filter box (2) is fixedly arranged on the treatment box (1), a water groove (3) is arranged on the inner bottom wall of the treatment box (1), and an absorbent is filled in the water groove (3), characterized in that, Also include: Filtering bucket (4), the filtering bucket (4) is arranged in the filtering box (2), the filtering bucket (4) is in contact with the inner top wall of the filtering box (2); Mounting mechanism, the mounting mechanism is arranged in the filtering bucket (4), for mounting and fixing the filtering bucket (4); Collecting pipe (5), the collecting pipe (5) is arranged through the side wall of the filtering box (2), the collecting pipe (5) is communicated with the filtering bucket (4); Air inlet mechanism, the air inlet mechanism is arranged between the treatment box (1) and the filtering box (2), for the filtered coal gas into the sink (3); First cavity (6), the first cavity (6) is arranged as an annular shape, the first cavity (6) is opened in the filtering box (2), the first cavity (6) is provided with a plurality of air vents between the treatment box (1), the side wall of the first cavity (6) is provided with an exhaust port; Cleaning mechanism, the cleaning mechanism is arranged in the filtering box (2), for cleaning the filtering bucket (4).

2. A vertical furnace top gas discharge device according to claim 1, characterized in that The mounting mechanism comprises: Mounting disc (7), the mounting disc (7) is arranged in the filtering box (2), a plurality of mounting columns (8) are fixedly arranged between the side wall of the mounting disc (7) and the inner wall of the filtering box (2); Mounting port, the mounting port is opened on the inner top wall of the filtering box (2), the mounting seat (9) is slidably arranged in the mounting port, and the mounting plate is fixedly arranged on the side wall of the mounting seat (9); Mounting bolt (10), the mounting bolt (10) is arranged through the thread cooperation between the mounting plate and the side wall of the filtering box (2).

3. A shaft furnace top gas discharge arrangement according to claim 2, characterized in that The mounting seat (9) is provided with a mounting groove, the filtering bucket (4) is arranged between the groove bottom of the mounting groove and the mounting disc (7), and the filtering bucket (4) is in contact with the groove bottom of the mounting groove and the mounting disc (7) respectively.

4. A shaft furnace top gas discharge arrangement according to claim 3, characterized in that The air inlet mechanism comprises: First air inlet pipe (11), the first air inlet pipe (11) is rotatably arranged on the groove bottom of the sink (3), and the first air inlet pipe (11) penetrates the inner top wall of the treatment box (1) and extends into the filtering box (2); Second air inlet pipe (12), a plurality of second air inlet pipes (12) are communicated on the side wall of the first air inlet pipe (11), one end of the second air inlet pipe (12) away from the first air inlet pipe (11) is sealed, and a plurality of air inlet nozzles are communicated on the side wall of the second air inlet pipe (12).

5. A shaft furnace top gas discharge arrangement according to claim 4, characterized in that The cleaning mechanism comprises: Cleaning column (13), the cleaning column (13) is rotatably arranged on the inner top wall of the filtering box (2); Cleaning frame (14), a plurality of cleaning frames (14) are fixedly arranged on the side wall of the cleaning column (13), and cleaning bristles are uniformly distributed on the side wall of the cleaning frame (14); Rotating mechanism, the rotating mechanism is arranged on the filtering box (2), for driving the cleaning column (13) to rotate.

6. A shaft furnace top gas discharge arrangement according to claim 5, characterized in that The rotating mechanism comprises: First gear ring (15), the first gear ring (15) is fixedly arranged on the cleaning column (13); A first gear (16) is rotationally arranged on the mounting base (9), and the first gear (16) is engaged with the first gear ring (15); A first motor (17) is fixedly arranged on the mounting base (9), and an output end of the first motor (17) is fixedly connected with the first gear (16).

7. A shaft furnace top gas discharge arrangement according to claim 6, characterized in that The cleaning column (13) penetrates through the filter barrel (4) and the mounting disc (7), a first fixing ring (18) is fixedly arranged on a side wall of the cleaning column (13), a second fixing ring (19) is fixedly arranged on a side wall of the first air inlet pipe (11), and a plurality of fixing columns (20) are fixedly arranged between the first fixing ring (18) and the second fixing ring (19).

8. A shaft furnace top gas discharge arrangement according to claim 7, characterized in that A plurality of stirring rods (21) are fixedly arranged on the first air inlet pipe (11).

9. A shaft furnace top gas discharge arrangement according to claim 8, characterized in that An annular positioning pipe (22) is fixedly arranged in the first cavity (6), a plurality of atomizing nozzles are communicatively arranged on an inner bottom wall of the positioning pipe (22), a water pump (23) is fixedly arranged on a side wall of the treatment box (1), an input end of the water pump (23) is communicated with the treatment box (1), and an output end of the water pump (23) is communicated with the positioning pipe (22).

10. A shaft furnace top gas discharge arrangement according to claim 9, characterized in that A water changing opening is formed in a side wall of the treatment box (1), and a water changing control valve is arranged in the water changing opening.

Images