Stirring type wet smoke exhaust desulfurization device of sintering machine

Abstract

The present invention relates to the technical field of sintering machine tail gas treatment, and discloses a sintering machine stirring type wet flue gas desulfurization apparatus, which comprises a desulfurization container, the exterior of the desulfurization container is communicated with a gas inlet pipe, and the top of the desulfurization container is fixedly provided with a feeding stirring assembly linked with the gas inlet pipe, the feeding and stirring assembly comprises a stirring sleeve which is rotationally connected with the desulfurization container and is immersed below the absorbent, an air inlet pipe is rotationally connected into the stirring sleeve, an auxiliary pushing blade is fixedly mounted on the outer side of the stirring sleeve, and a power assembly for driving the stirring sleeve to rotate is fixedly mounted at the top of the desulfurization container; the top of the desulfurization container is communicated with a spraying pipeline, and a circulating pump of which the water outlet end and the water inlet end respectively extend into the spraying pipeline and the desulfurization container is fixedly mounted outside the desulfurization container. The stirring type wet flue gas desulfurization device of the sintering machine has the advantages of improving the spraying absorption quality and preventing the spraying absorption quality from being influenced by the spraying density.

Description

Technical Field

[0001] The invention relates to the technical field of sintering machine tail gas treatment, in particular to a sintering machine stirring wet type smoke exhaust desulfurization device. Background Art

[0002] The tail gas of the sintering machine mainly contains pollutants such as dust, sulfur dioxide, nitrogen oxides, etc. The tail gas treatment first uses efficient dust removal equipment, such as electrostatic precipitator or bag filter, to remove a large amount of dust particles. The dust removal efficiency can reach a very high level, which can effectively reduce the impact of dust emissions on the atmospheric environment.

[0003] For the removal of sulfur dioxide, limestone-gypsum wet desulfurization technology is often used, which allows the sulfur dioxide in the exhaust gas to react with limestone slurry to generate gypsum, thereby achieving the purpose of desulfurization. The desulfurization efficiency can reach more than 90%.

[0004] The sintering machine stirring wet flue gas desulfurization device proposed in the authorization announcement No. CN203620503U provides equipment for treating the tail gas of the sintering machine. However, during the spraying treatment process, the spraying position is fixed, which may lead to changes in the spraying range and the spraying interval, and the treatment effect of some positions with low spray coverage may be low. Therefore, a sintering machine stirring wet flue gas desulfurization device is proposed to solve the above-mentioned problems. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In view of the shortcomings of the prior art, the present invention provides a sintering machine stirred wet flue gas desulfurization device, which has the advantages of improving the spray absorption quality and preventing it from being affected by the spray density. It solves the problem that in the existing treatment scheme, the spray position is fixed during the spray treatment, which easily leads to changes in the spray range and the spray gap, resulting in low treatment effect in some positions with low spray coverage.

[0007] (II) Technical solution

[0008] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a sintering machine stirring wet flue gas desulfurization device, comprising a desulfurization container, the outside of the desulfurization container is connected to an air inlet pipe, a feed stirring assembly linked to the air inlet pipe is fixedly installed on the top of the desulfurization container, the top of the desulfurization container is connected to a spray pipe, the outside of the desulfurization container is fixedly installed with a circulating pump whose water outlet and water inlet ends extend to the spray pipe and the inside of the desulfurization container respectively, the inside of the spray pipe is provided with a spray assembly connected to the circulation pump and with variable spray pressure, and the inside of the desulfurization container is filled with absorbent.

[0009] The beneficial effects of the present invention are:

[0010] The sintering machine stirring wet flue gas desulfurization device has the advantages of improving the spray absorption quality and preventing it from being affected by the spray density.

[0011] Based on the above technical solution, the present invention can also be improved as follows.

[0012] Furthermore, the feed stirring assembly includes a stirring sleeve rotatably connected to the desulfurization container and immersed under the absorbent, the interior of the stirring sleeve is rotatably connected to an air inlet pipe, the outer side of the stirring sleeve is fixedly installed with auxiliary propulsion blades, and the top of the desulfurization container is fixedly installed with a power assembly for driving the stirring sleeve to rotate.

[0013] The beneficial effect of adopting the above further scheme is that the setting of the feed stirring assembly can conveniently introduce the gas into the absorbent, thereby facilitating the desulfurization reaction.

[0014] Furthermore, the power assembly includes a motor fixed to the top of the desulfurization container, and the outer side of the output shaft of the motor is connected to a transmission belt connected to the stirring sleeve.

[0015] The beneficial effect of adopting the above further solution is that the stirring sleeve can be conveniently driven to rotate through this arrangement.

[0016] Furthermore, a stirring blade located in the absorbent is arranged outside the stirring sleeve, an air hole communicating with the stirring sleeve is opened inside the stirring blade, and the end of the air inlet pipe faces behind the connection point between the auxiliary pushing blade and the stirring sleeve.

[0017] The beneficial effect of adopting the above further solution is that the stirring blades arranged in this way can conveniently introduce air into the absorbent, and at the same time the air inlet pipes arranged in this way can conveniently assist in pushing the stirring blades.

[0018] Furthermore, the spray assembly includes a fixed frame fixed to the inner side of the spray pipe, a fixed spray frame fixedly connected to the inner wall of the spray pipe and connected to the output end of the circulation pump is fixedly installed on the outer side of the fixed frame, a moving assembly is fixedly installed on the inner wall of the spray pipe, a rotating spray frame connected thereto is rotatably connected to the outer side of the fixed frame, a moving end of the moving assembly is fixedly connected to a U-shaped tube whose two ends are respectively connected to the fixed frame and the circulation pump to form a seal, and a driving plate connected to the rotating spray frame is fixedly installed on the outside of the U-shaped tube.

[0019] The beneficial effect of adopting the above further solution is that the arrangement of the spray assembly can better absorb harmful substances in the flue gas through variable speed spraying.

[0020] Furthermore, a wear-resistant sealing pad is provided inside the connection between the U-shaped tube, the fixing frame and the circulation pump, and a one-way valve is provided inside the end of the U-shaped tube connected to the circulation pump, and the direction of the one-way valve is from the circulation pump to the fixing frame.

[0021] The beneficial effect of adopting the above further solution is that the provision of the wear-resistant sealing pad prevents the absorbent from overflowing during the delivery process.

[0022] Furthermore, the output end of the circulation pump is provided with a tee, and the two output ends of the tee are respectively connected to the U-shaped pipe and the fixed spray rack, and the input end of the circulation pump is connected with a filter screen through threads.

[0023] The beneficial effect of adopting the above further solution is that the solid matter in the desulfurization container can be blocked by the threaded filter screen to prevent the circulation pump from being damaged.

[0024] Furthermore, a driving sleeve is fixedly installed on the inner side of the rotating spray frame, and the driving sheet is twisted and slidably connected to the driving sleeve.

[0025] The beneficial effect of adopting the above further solution is that the twisted drive sheet can drive the rotating spray frame to rotate through the drive sleeve when moving up and down. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the present invention;

[0027] Figure 2 It is an enlarged view of point A in the figure of the present invention;

[0028] Figure 3 It is an enlarged view of point B in the figure of the present invention;

[0029] Figure 4 This is a connection diagram of the fixed frame and the rotating spray frame of the present invention;

[0030] Figure 5 This is a connection diagram of the rotating spray frame and the driving plate of the present invention.

[0031] In the figure: 1. Desulfurization container; 2. Air inlet pipe; 3. Feed stirring assembly; 31. Stirring sleeve; 32. Air inlet pipe; 33. Auxiliary propulsion blade; 34. Power assembly; 4. Spray pipe; 5. Circulation pump; 6. Spray assembly; 61. Fixed frame; 62. Fixed spray frame; 63. Moving assembly; 64. Rotating spray frame; 65. U-shaped pipe; 66. Driving plate. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Embodiment 1, by Figure 1-5 A sintering machine stirring wet flue gas desulfurization device is provided, which includes a desulfurization container 1. The outside of the desulfurization container 1 is connected with an air inlet pipe 2. A feed stirring assembly 3 linked with the air inlet pipe 2 is fixedly installed on the top of the desulfurization container 1. The top of the desulfurization container 1 is connected with a spray pipe 4. A circulating pump 5 with a water outlet end and a water inlet end extending to the spray pipe 4 and the inside of the desulfurization container 1 respectively is fixedly installed on the outside of the desulfurization container 1. A spray assembly 6 connected with the circulation pump 5 and with a variable spray pressure is arranged inside the spray pipe 4. The inside of the desulfurization container 1 is filled with an absorbent.

[0034] Furthermore, the feed stirring assembly 3 includes a stirring sleeve 31 which is rotatably connected to the desulfurization container 1 and immersed under the absorbent, the interior of the stirring sleeve 31 is rotatably connected to an air inlet pipe 32, an auxiliary propulsion blade 33 is fixedly installed on the outside of the stirring sleeve 31, and a power assembly 34 for driving the stirring sleeve 31 to rotate is fixedly installed on the top of the desulfurization container 1.

[0035] Furthermore, the power assembly 34 includes a motor fixed to the top of the desulfurization container 1 , and a transmission belt connected to the stirring sleeve 31 is connected to the outer side of the output shaft of the motor.

[0036] Particularly, a transmission wheel connected to the transmission belt is disposed outside the motor and the stirring sleeve 31. When the transmission wheel is used as a pulley, the transmission belt is a belt; when the transmission wheel is used as a sprocket, the transmission belt is a chain.

[0037] Furthermore, a stirring blade located in the absorbent is arranged outside the stirring sleeve 31 , and an air hole connected to the stirring sleeve 31 is opened inside the stirring blade. The end of the air inlet pipe 2 faces behind the connection point between the auxiliary pushing blade 33 and the stirring sleeve 31 .

[0038] When the feed stirring assembly 3 is in operation, the reaction gas can be filled in through the air inlet pipe 32, and the stirring sleeve 31 can be driven to rotate by the motor and the transmission belt to stir, thereby increasing the reaction efficiency. At the same time, when the exhaust gas enters the desulfurization container 1, its airflow passes through the auxiliary propulsion blades 33 to provide a propulsion force, thereby assisting the power assembly 34 and reducing the power consumption of the auxiliary power assembly 34.

[0039] Furthermore, the spray assembly 6 includes a fixed frame 61 fixed to the inner side of the spray pipe 4, a fixed spray frame 62 fixedly connected to the inner wall of the spray pipe 4 and connected to the output end of the circulation pump 5 is fixedly installed on the outer side of the fixed frame 61, a moving assembly 63 is fixedly installed on the inner wall of the spray pipe 4, a rotating spray frame 64 connected to the fixed frame 61 is rotatably connected to the outer side of the fixed frame 61, a moving end of the moving assembly 63 is fixedly connected to a U-shaped tube 65 whose two ends are respectively connected to the fixed frame 61 and the circulation pump 5 to form a seal, and a driving plate 66 connected to the rotating spray frame 64 is fixedly installed on the outside of the U-shaped tube 65.

[0040] Furthermore, a wear-resistant sealing gasket is provided inside the connection between the U-shaped tube 65 and the fixing frame 61 and the circulating pump 5 , and a one-way valve is provided inside the end of the U-shaped tube 65 connected to the circulating pump 5 , and the direction of the one-way valve is from the circulating pump 5 to the fixing frame 61 .

[0041] Furthermore, the output end of the circulation pump 5 is provided with a tee, and the two output ends of the tee are respectively connected to the U-shaped pipe 65 and the fixed spray rack 62, and the input end of the circulation pump 5 is connected with a filter screen through threads.

[0042] Furthermore, a driving sleeve is fixedly installed on the inner side of the rotating spray frame 64, and the driving sheet 66 is twisted and slidably connected to the driving sleeve.

[0043] When the spray assembly 6 is working, the circulating pump 5 pumps the absorbent to the top spray rack 62 to start spraying, so as to complete the spray absorption function under normal conditions. During further operation, the motion assembly 63 can be started to drive the U-shaped tube 65 to start reciprocating up and down. Due to the up and down movement of the inside of the U-shaped tube 65, the stroke of the absorbent when passing through the U-shaped tube 65 changes, thereby changing the pressure inside the U-shaped tube 65, causing the pressure to change continuously, thereby causing the spray pressure of the rotating spray rack 64 to change, and the distribution of the spray liquid to change at the same time. At the same time, in the process of the U-shaped tube 65 moving up and down, it drives the driving plate 66 to move up and down, and then drives the rotating spray pipe rack 64 to rotate. At this time, while the spray pressure changes, the spray direction can also be changed, thereby increasing the disorder of the spray, and better mixing and absorbing the passing gas.

[0044] Working principle:

[0045] The exhaust gas enters the desulfurization container 1 through the air inlet pipe 2. At this time, the circulating pump 5 pumps the absorbent in the desulfurization container 1 to the spray assembly 6 to start spraying, thereby reacting with the exhaust gas passing therethrough and performing reaction desulfurization in the desulfurization container 1. At this time, the feed stirring assembly 3 rotates while the reaction gas enters to promote the reaction, thereby completing the overall desulfurization operation.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0047] Although 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. A sintering machine stirring wet flue gas desulfurization device, comprising a desulfurization container (1), characterized in that: The outside of the desulfurization container (1) is connected to an air inlet pipe (2), and a feed stirring assembly (3) linked to the air inlet pipe (2) is fixedly installed on the top of the desulfurization container (1). The top of the desulfurization container (1) is connected to a spray pipe (4), and a circulating pump (5) is fixedly installed on the outside of the desulfurization container (1), the water outlet end and the water inlet end of which extend to the spray pipe (4) and the inside of the desulfurization container (1) respectively. A spray assembly (6) connected to the circulation pump (5) and with a variable spray pressure is arranged inside the spray pipe (4), and the inside of the desulfurization container (1) is filled with an absorbent.

2. A sintering machine stirring wet flue gas desulfurization device according to claim 1, characterized in that: The feed stirring assembly (3) comprises a stirring sleeve (31) rotatably connected to the desulfurization container (1) and immersed under the absorbent, the interior of the stirring sleeve (31) is rotatably connected to an air inlet pipe (32), an auxiliary propulsion blade (33) is fixedly mounted on the outside of the stirring sleeve (31), and a power assembly (34) for driving the stirring sleeve (31) to rotate is fixedly mounted on the top of the desulfurization container (1).

3. A sintering machine stirring wet flue gas desulfurization device according to claim 2, characterized in that: The power assembly (34) comprises a motor fixed to the top of the desulfurization container (1), and a transmission belt connected to the stirring sleeve (31) is connected to the outer side of the output shaft of the motor.

4. A sintering machine stirring wet flue gas desulfurization device according to claim 2, characterized in that: The outside of the stirring sleeve (31) is provided with a stirring blade located in the absorbent, and the inside of the stirring blade is provided with an air hole connected to the stirring sleeve (31), and the end of the air inlet pipe (2) faces the rear of the connection point between the auxiliary pushing blade (33) and the stirring sleeve (31).

5. The stirring wet flue gas desulfurization device for a sintering machine according to claim 1, characterized in that: The spray assembly (6) comprises a fixed frame (61) fixed to the inner side of the spray pipe (4); a fixed spray frame (62) fixedly connected to the inner wall of the spray pipe (4) and connected to the output end of the circulation pump (5) is fixedly installed on the outer side of the fixed frame (61); a moving assembly (63) is fixedly installed on the inner wall of the spray pipe (4); a rotating spray frame (64) connected to the fixed frame (61) is rotatably connected to the outer side of the fixed frame (61); a moving end of the moving assembly (63) is fixedly connected to a U-shaped tube (65) whose two ends are respectively connected to the fixed frame (61) and the circulation pump (5) to form a seal; and a driving plate (66) connected to the rotating spray frame (64) is fixedly installed on the outside of the U-shaped tube (65).

6. A sintering machine stirring wet flue gas desulfurization device according to claim 5, characterized in that: A wear-resistant sealing pad is arranged inside the connection between the U-shaped tube (65), the fixing frame (61) and the circulation pump (5), and a one-way valve is arranged inside one end of the U-shaped tube (65) connected to the circulation pump (5), and the direction of the one-way valve is from the circulation pump (5) to the fixing frame (61).

7. The stirring wet flue gas desulfurization device for a sintering machine according to claim 5, characterized in that: The output end of the circulation pump (5) is provided with a tee, and the two output ends of the tee are respectively connected to the U-shaped pipe (65) and the fixed spray rack (62), and the input end of the circulation pump (5) is connected to a filter screen via a thread.

8. The stirring wet flue gas desulfurization device for a sintering machine according to claim 5, characterized in that: A driving sleeve is fixedly mounted on the inner side of the rotating spray frame (64), and the driving sheet (66) is twisted and slidably connected to the driving sleeve.

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