Tail gas treatment equipment for refining furnace

Abstract

The utility model belongs to the technical field of tail gas treatment, and particularly relates to refining furnace tail gas treatment equipment which comprises a combustion furnace. A spraying tower is arranged on the other side of the combustion furnace, a first partition plate and a second partition plate are arranged in the spraying tower in parallel and fixedly installed on the inner wall of the spraying tower, a fan-shaped hole is formed in one side of the upper portion of the first partition plate, and a filling box is arranged above the first partition plate and rotationally installed in the spraying tower. A spray head is arranged above the filling box and located on one side of the fan-shaped hole, a three-way pipe is fixedly connected to the water outlet end of the pressure pump, the upper portion of the three-way pipe is fixedly connected with the spray head, the lower portion of the three-way pipe is fixedly connected with a shower head, a U-shaped pipe is fixedly connected to one side of the spraying tower and communicated with the interior of the spraying tower, and a pipe opening in the upper end of the U-shaped pipe is formed below the first partition plate. The lower end pipe orifice is arranged below the second partition plate; the catalyst is added to burn the tail gas of the refining furnace, sulfides and nitrides in the tail gas are removed, then the tail gas is purified through spraying treatment, and the desulfurization and denitrification cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas treatment, in particular to a tail gas treatment device for a refining furnace. Background Art

[0002] The refining furnace is mainly used to refine the molten steel from the primary refining furnace, and can adjust the temperature of the molten steel to meet the requirements of continuous casting and continuous rolling. The refining furnace has the heating and refining functions of the steelmaking furnace, which can remove impurities and gases in the molten steel and improve the purity and quality of the molten steel.

[0003] The tail gas treatment equipment of the refining furnace includes: dust collector, desulfurization device, denitrification device, incinerator, adsorption device, etc. When treating the tail gas, the dust is first removed by the dust collector, and then the sulfide and nitride in the tail gas are reduced by the desulfurization device and the denitrification device respectively, and then the harmful gas in the tail gas is burned by the incinerator, and some harmful substances are adsorbed by the adsorption device, so that the tail gas meets the emission standards and is discharged to the outside.

[0004] The existing tail gas treatment equipment for refining furnaces has a complex structure and high operating cost, which reduces the practicability of the tail gas treatment device; therefore, a tail gas treatment equipment for refining furnaces is proposed to address the above problems. Utility Model Content

[0005] In order to make up for the shortcomings of the prior art, the existing tail gas treatment equipment for refining furnaces has a complex structure, high operating costs, and reduces the practicability of the tail gas treatment device. The utility model proposes a tail gas treatment equipment for refining furnaces.

[0006] The technical solution adopted by the utility model to solve its technical problem is: the utility model discloses a kind of refinery tail gas treatment equipment, comprises a combustion furnace; a flame spraying pipe is fixedly arranged on one side of the combustion furnace, the flame spraying pipe is communicated with the inside of the combustion furnace, an igniter is fixedly installed on the cross section of the other end of the flame spraying pipe, the upper side of the other end of the flame spraying pipe is fixedly connected with a spray pipe, a fixing seat is arranged on one side of the lower end of the combustion furnace, a fan is fixedly installed on the fixing seat, an exhaust pipe is fixedly connected to the air inlet end of the fan, the other end of the exhaust pipe is fixedly connected to the refining furnace, the air outlet end of the fan is fixedly connected with an air supply pipe, the other end of the air supply pipe is fixedly connected to one side of the lower end of the combustion furnace, an air outlet hole is opened on the top of the combustion furnace, a smoke pipe is fixedly connected to the air outlet hole, a spray tower is arranged on the other side of the combustion furnace, the other end of the smoke pipe is fixedly connected to one side of the lower end of the spray tower, and a first partition and a A second baffle is fixedly mounted on the inner wall of the spray tower, a fan-shaped hole is opened on one side of the upper part of the first baffle, a filling box is arranged above the first baffle and is rotatably mounted in the spray tower, a nozzle is arranged above the filling box on one side of the fan-shaped hole, a water tank is arranged on the other side of the bottom of the spray tower, a pressure pump is fixedly mounted on the upper part of the water tank, a water suction pipe is fixedly connected to the water inlet end of the pressure pump, the lower end of the water suction pipe extends to the bottom of the water tank, a three-way pipe is fixedly connected to the water outlet end of the pressure pump, the upper part of the three-way pipe is fixedly connected to the nozzle, and the lower part is fixedly connected to the shower head, a U-shaped pipe is fixedly connected to one side of the spray tower and is connected to the inside of the spray tower, the upper end of the U-shaped pipe is arranged below the first baffle, and the lower end is arranged below the second baffle, the tail gas of the refining furnace is burned by adding a catalyst to remove sulfides and nitrides in the tail gas, and then the tail gas is purified by spraying, thereby saving the cost of desulfurization and denitrification.

[0007] Preferably, a storage box is provided on one side of the combustion furnace, a water intake hole is opened on the upper part of the storage box, a water intake pipe is fixedly installed in the water intake hole, a water pump is fixedly installed on the upper part of the storage box, the upper end of the water intake pipe is fixedly connected to the water inlet end of the water pump, and the other end of the spray pipe is fixedly connected to the water outlet end of the water pump, and the amount of catalyst added when burning the exhaust gas is controlled by the water pump.

[0008] Preferably, a water hole is opened on one side of the upper part of the second partition, a water pipe is fixedly installed in the water hole, the lower end of the water pipe is arranged at the bottom of the spray tower, and the upper spray liquid is discharged to the bottom of the spray tower through the water pipe.

[0009] Preferably, a drain port is provided at the bottom of the spray tower, a drain pipe is fixedly mounted on the drain port, a control valve is arranged in the drain pipe, and the discharge of liquid at the bottom of the spray tower is controlled by the control valve.

[0010] Preferably, a motor is fixedly installed in the center of the top of the spray tower, and a connecting shaft is provided in the upper part of the spray tower. The upper end of the connecting shaft is fixedly connected to the rotating shaft of the motor, and the lower end is fixedly connected to the center of the top of the filling box. The filling box is driven to rotate by the motor, so that the exhaust gas enters the filling layer and contacts the filler evenly.

[0011] Preferably, an exhaust port is opened on one side of the top of the spray tower, an exhaust pipe is fixedly installed on the exhaust port, a baffle is welded with a cylinder on the top of the exhaust pipe, and a semicircular blade is rotatably installed inside the exhaust pipe through a fixed axis. The exhaust pipe is controlled by the semicircular blade to discharge air while preventing outside air from entering the interior of the spray tower.

[0012] The utility model is beneficial in that:

[0013] 1. The utility model starts the fan when using the tail gas treatment equipment, blows the tail gas in the refining furnace into the combustion furnace through the air supply pipe through the exhaust pipe, and starts the water pump and the igniter at the same time. The water pump pumps the catalyst in the storage tank into the spray pipe through the water suction pipe, and then sprays it into the flame spray pipe. The igniter ignites inside the flame spray pipe to burn the tail gas in the combustion furnace to decompose the harmful substances in the tail gas. Then the burned gas enters the bottom of the spray tower through the flue gas pipe, starts the pressure pump, and draws the spray liquid in the water tank through the water suction pipe and then enters the shower and the spray tower through the three-way pipe. The nozzle sprays downward, and the exhaust gas is cooled and dusted by the shower spray at the bottom of the spray tower, and then flows upward through the U-tube into the interlayer between the first partition and the second partition, enters the filling box through the fan-shaped hole, reacts with the spray liquid in the gap between the fillers, and then enters the upper layer of the spray tower through the filling box and is discharged from the exhaust pipe. The structural design of the spray tower realizes the function of saving operating costs, solves the problem that the existing refining furnace exhaust gas treatment equipment has complex structure and high operating costs, which reduces the practicability of the exhaust gas treatment device, and improves the practicability of the exhaust gas treatment device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is a schematic diagram of the structure of the intake side of the exhaust gas treatment equipment;

[0016] Figure 2 This is a schematic diagram of the structure of one side of the spray tower of the tail gas treatment equipment;

[0017] Figure 3It is a schematic diagram of the cross-sectional structure of the exhaust gas treatment equipment;

[0018] Figure 4 Schematic diagram of the internal structure of the exhaust pipe;

[0019] Figure 5 Schematic diagram of the internal structure of the storage box.

[0020] In the figure: 1. combustion furnace; 2. flamethrower; 3. igniter; 4. spray tube; 5. storage box; 6. water suction pipe; 7. water pump; 8. fan; 9. exhaust pipe; 10. air supply pipe; 11. flue gas pipe; 12. spray tower; 13. motor; 14. exhaust pipe; 15. baffle; 16. semicircular blade; 17. connecting shaft; 18. filling box; 19. nozzle; 20. first partition; 21. second partition; 22. sewer pipe; 23. three-way pipe; 24. shower; 25. U-shaped pipe; 26. water tank; 27. booster pump; 28. water suction pipe; 29. ​​control valve. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-5As shown, a refinery tail gas treatment equipment comprises a combustion furnace 1; a flamethrower 2 is fixedly arranged on one side of the combustion furnace 1, the flamethrower 2 is communicated with the inside of the combustion furnace 1, an igniter 3 is fixedly installed on the cross section of the other end of the flamethrower 2, and a spray tube 4 is fixedly connected to the upper side of the other end of the flamethrower 2; a fixing seat is arranged on one side of the lower end of the combustion furnace 1, a fan 8 is fixedly installed on the fixing seat, an exhaust pipe 9 is fixedly connected to the air inlet end of the fan 8, and the other end of the exhaust pipe 9 is fixedly connected to the refining furnace; an air supply pipe 10 is fixedly connected to the air outlet end of the fan 8, and the other end of the air supply pipe 10 is fixedly connected to one side of the lower end of the combustion furnace 1; an air outlet hole is opened on the top of the combustion furnace 1, and a smoke pipe 11 is fixedly connected to the air outlet hole; 1 is provided with a spray tower 12 on the other side, the other end of the flue gas pipe 11 is fixedly connected to one side of the lower end of the spray tower 12, the first baffle 20 and the second baffle 21 are arranged in parallel inside the spray tower 12 and are fixedly installed on the inner wall of the spray tower 12, a fan-shaped hole is opened on one side of the upper part of the first baffle 20, a filling box 18 is arranged above the first baffle 20 and is rotatably installed in the spray tower 12, a nozzle 19 is arranged above the filling box 18 and on one side of the fan-shaped hole, a water tank 26 is provided on the other side of the bottom of the spray tower 12, a pressure pump 27 is fixedly installed on the upper part of the water tank 26, a water inlet end of the pressure pump 27 is fixedly connected to a water pump 28, the lower end of the water pump 28 extends to the bottom of the water tank 26, and the water outlet end of the pressure pump 27 is fixedly connected to A three-way pipe 23 is connected, the upper part of the three-way pipe 23 is fixedly connected to the nozzle 19, and the lower part is fixedly connected to the shower head 24. A U-shaped pipe 25 is fixedly connected to one side of the spray tower 12 and is communicated with the inside of the spray tower 12. The upper end of the U-shaped pipe 25 is arranged below the first partition 20, and the lower end is arranged below the second partition 21. When working, the existing tail gas treatment equipment of the refining furnace has a complex structure and high operating cost, which reduces the practicality of the tail gas treatment equipment. When the tail gas treatment equipment is used, the fan 8 is started, and the tail gas in the refining furnace is blown into the combustion furnace 1 through the exhaust pipe 9 through the air supply pipe 10. At the same time, the water pump 7 and the igniter 3 are started, and the water pump 7 pumps the catalyst in the storage box 5 into the spray pipe 4 through the water suction pipe 6, and then sprays it to the flame spray pipe 2, the igniter 3 ignites inside the flame-spraying tube 2, burns the tail gas in the combustion furnace 1, decomposes the harmful substances in the tail gas, and then the burned gas enters the bottom of the spray tower 12 through the flue gas pipe 11, starts the pressure pump 27, extracts the spray liquid in the water tank 26 through the pumping pipe 28, and then enters the shower 24 and the nozzle 19 through the three-way pipe 23 to spray downward, the tail gas is sprayed by the shower 24 at the bottom of the spray tower 12 for cooling and dust removal, and then flows upward through the U-shaped tube 25 into the interlayer between the first partition 20 and the second partition 21, enters the filling box 18 through the fan-shaped hole, reacts with the spray liquid in the gap of the filler, and then enters the upper layer of the spray tower 12 through the filling box 18 and is discharged from the spray tower 12 from the exhaust pipe 14.

[0023] A storage box 5 is arranged on one side of the combustion furnace 1, a water intake hole is opened on the upper part of the storage box 5, a water intake pipe 6 is fixedly installed in the water intake hole, a water pump 7 is fixedly installed on the upper part of the storage box 5, the upper end of the water intake pipe 6 is fixedly connected to the water inlet end of the water pump 7, and the other end of the spray pipe 4 is fixedly connected to the water outlet end of the water pump 7; during operation, when the exhaust gas treatment equipment is used, the water pump 7 is started, and the water pump 7 pumps the catalyst in the storage box 5 into the spray pipe 4 through the water intake pipe 6, and then sprays it into the flamethrower 2.

[0024] A water hole is opened on one side of the upper part of the second partition 21, and a water pipe 22 is fixedly installed in the water hole. The lower end of the water pipe 22 is set at the bottom of the spray tower 12; during operation, when the exhaust gas treatment equipment is used, the fan-shaped holes on the first partition 20 discharge the upper spray liquid to the upper part of the second partition 21, and the spray liquid is discharged into the bottom of the spray tower 12 through the water pipe 22, and the lower end of the water pipe 22 is immersed in the liquid to prevent the gas from entering the upper cavity through the water pipe 22.

[0025] A drain port is provided at the bottom of the spray tower 12, a drain pipe is fixedly installed on the drain port, and a control valve 29 is provided in the drain pipe; during operation, when the exhaust gas treatment equipment is used, when the liquid at the bottom of the spray tower 12 reaches a certain amount, the control valve 29 is opened to discharge the liquid at the bottom of the spray tower 12 into the water treatment device for treatment.

[0026] A motor 13 is fixedly installed at the center of the top of the spray tower 12, and a connecting shaft 17 is provided at the upper part of the spray tower 12. The upper end of the connecting shaft 17 is fixedly connected to the rotating shaft of the motor 13, and the lower end is fixedly connected to the center of the top of the filling box 18; during operation, when the exhaust gas treatment equipment is used, the motor 13 is started, and the motor 13 drives the filling box 18 to rotate through the connecting shaft 17.

[0027] An exhaust port is provided on one side of the top of the spray tower 12, an exhaust pipe 14 is fixedly installed on the exhaust port, a shielding plate 15 is welded on the top of the exhaust pipe 14 through a cylinder, and a semicircular blade 16 is rotatably installed inside the exhaust pipe 14 through a fixed axis; during operation, when the exhaust gas treatment equipment is used, after the exhaust gas is treated in the spray tower 12, it enters the exhaust pipe 14 through the exhaust port, and then pushes the semicircular blade 16 to rotate, and then is discharged through the pipe mouth, the shielding plate 15 is used to block debris and rainwater from entering the exhaust pipe 14, and the semicircular blade 16 prevents outside air from entering the spray tower 12.

[0028] Working principle: the existing tail gas treatment equipment for refining furnace has a complex structure and high operating cost, which reduces the practicality of the tail gas treatment equipment. When using the tail gas treatment equipment, start the fan 8, and blow the tail gas in the refining furnace into the combustion furnace 1 through the exhaust pipe 9 through the air supply pipe 10. At the same time, start the water pump 7 and the igniter 3. The water pump 7 pumps the catalyst in the storage box 5 into the spray pipe 4 through the water suction pipe 6, and then sprays it into the flame-spraying pipe 2. The igniter 3 ignites inside the flame-spraying pipe 2, burns the tail gas in the combustion furnace 1, decomposes the harmful substances in the tail gas, and then the gas after combustion passes through the flue gas. The pipe 11 enters the bottom of the spray tower 12, and the pressure pump 27 is started. The spray liquid in the water tank 26 is pumped out through the pumping pipe 28 and then enters the shower head 24 and the nozzle 19 through the three-way pipe 23 for downward spraying. The exhaust gas is sprayed through the shower head 24 at the bottom of the spray tower 12 for cooling and dust removal, and then flows upward through the U-shaped pipe 25 into the interlayer between the first partition 20 and the second partition 21, and enters the filling box 18 through the fan-shaped hole, reacts with the spray liquid in the gap between the fillers, and then enters the upper layer of the spray tower 12 through the filling box 18 and is discharged from the spray tower 12 from the exhaust pipe 14.

[0029] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0030] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A refinery tail gas treatment device, characterized in that: The invention comprises a combustion furnace (1); a flame spraying pipe (2) is fixedly arranged on one side of the combustion furnace (1), the flame spraying pipe (2) is communicated with the inside of the combustion furnace (1), an igniter (3) is fixedly installed on the cross section of the other end of the flame spraying pipe (2), a spray pipe (4) is fixedly connected to the upper side of the other end of the flame spraying pipe (2), a fixing seat is arranged on one side of the lower end of the combustion furnace (1), a fan (8) is fixedly installed on the fixing seat, an air inlet end of the fan (8) is fixedly connected to an exhaust pipe (9), and the other end of the exhaust pipe (9) is fixedly connected to a nozzle (2). The fan (8) is connected to the refining furnace, the air outlet end of the fan (8) is fixedly connected to an air supply pipe (10), the other end of the air supply pipe (10) is fixedly connected to one side of the lower end of the combustion furnace (1), the top of the combustion furnace (1) is provided with an air outlet, the air outlet is fixedly connected to a flue gas pipe (11), a spray tower (12) is arranged on the other side of the combustion furnace (1), the other end of the flue gas pipe (11) is fixedly connected to one side of the lower end of the spray tower (12), and a first partition plate (20) and a second partition plate ( 21) is fixedly mounted on the inner wall of the spray tower (12), a fan-shaped hole is opened on one side of the upper part of the first partition (20), a filling box (18) is arranged above the first partition (20) and is rotatably mounted in the spray tower (12), a nozzle (19) is arranged above the filling box (18) and located on one side of the fan-shaped hole, a water tank (26) is arranged on the other side of the bottom of the spray tower (12), a booster pump (27) is fixedly mounted on the upper part of the water tank (26), and a water inlet end of the booster pump (27) is fixedly connected to a water pump pipe (2 8), the lower end of the water pump (28) extends to the bottom of the water tank (26), the water outlet end of the booster pump (27) is fixedly connected to a three-way pipe (23), the upper part of the three-way pipe (23) is fixedly connected to the spray head (19), and the lower part is fixedly connected to the shower head (24), one side of the spray tower (12) is fixedly connected to a U-shaped pipe (25), and is communicated with the inside of the spray tower (12), the upper end of the U-shaped pipe (25) is arranged below the first partition (20), and the lower end of the pipe is arranged below the second partition (21).

2. The refinery tail gas treatment equipment according to claim 1, characterized in that: A storage box (5) is provided on one side of the combustion furnace (1), a water intake hole is provided on the upper part of the storage box (5), a water intake pipe (6) is fixedly installed in the water intake hole, a water pump (7) is fixedly installed on the upper part of the storage box (5), the upper end of the water intake pipe (6) is fixedly connected to the water inlet end of the water pump (7), and the other end of the spray pipe (4) is fixedly connected to the water outlet end of the water pump (7).

3. The refinery tail gas treatment equipment according to claim 1, characterized in that: A water discharge hole is provided on one side of the upper portion of the second partition plate (21), a water discharge pipe (22) is fixedly installed in the water discharge hole, and the lower end of the water discharge pipe (22) is provided with the inner bottom of the spray tower (12).

4. The refinery tail gas treatment equipment according to claim 1, characterized in that: The bottom of the spray tower (12) is provided with a liquid discharge port, a liquid discharge pipe is fixedly mounted on the liquid discharge port, and a control valve (29) is arranged in the liquid discharge pipe.

5. The refinery tail gas treatment equipment according to claim 1, characterized in that: A motor (13) is fixedly installed at the center of the top of the spray tower (12), and a connecting shaft (17) is provided in the upper part of the spray tower (12). The upper end of the connecting shaft (17) is fixedly connected to the rotating shaft of the motor (13), and the lower end is fixedly connected to the center of the top of the filling box (18).

6. The refinery tail gas treatment equipment according to claim 1, characterized in that: An exhaust port is provided on one side of the top of the spray tower (12), an exhaust pipe (14) is fixedly mounted on the exhaust port, a shielding plate (15) is welded to the top of the exhaust pipe (14) via a cylinder, and a semicircular blade (16) is rotatably mounted inside the exhaust pipe (14) via a fixed shaft.

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