Coking flue gas desulfurization and denitrification device

Abstract

The utility model relates to the technical field of flue gas treatment, in particular to a coking flue gas desulfurization and denitrification device. Comprising a liquid storage barrel, the liquid storage barrel is filled with treatment liquid, the treatment liquid is used for purifying coking flue gas, a gas inlet mechanism is arranged on the liquid storage barrel, the coking flue gas is introduced into the treatment liquid through the gas inlet mechanism, a spraying mechanism is arranged in the liquid storage barrel, and the spraying mechanism sprays the treatment liquid to secondarily purify the coking flue gas. According to the coking flue gas treatment device, coking flue gas is introduced into treatment liquid in the liquid storage barrel through the gas inlet mechanism, and meanwhile, the gas inlet rotating rod drives the stirring rod and the crushing rod to rotate to crush bubbles in the treatment liquid, so that the coking flue gas and the treatment liquid are fully reacted, and the purification effect of the treatment liquid on the coking flue gas is improved; and after the treated flue gas is blown out from the interior of the treatment liquid, the treatment liquid is sprayed out through the spraying mechanism, gas in the liquid storage barrel is subjected to secondary purification, and the purification effect of the coking flue gas is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas treatment, and specifically, to a desulfurization and denitrification device for coking flue gas. Background Technique

[0002] Coking generally refers to the process of organic substances carbonizing and turning into coke. During the coking process of substances, flue gas is generated. If the flue gas is directly discharged to the outside, it will affect the air environmental quality of the outside. Therefore, it is necessary to purify the coking flue gas, especially to remove harmful substances in the coking flue gas. In the existing coking flue gas treatment process, most of them purify the coking flue gas by spraying. However, the coking flue gas scatters everywhere, and there are gaps between the sprayed water droplets, resulting in the difficulty for the sprayed water droplets to react effectively with the coking flue gas, thereby reducing the purification effect of the flue gas treatment device on the coking flue gas. In view of this, we propose a desulfurization and denitrification device for coking flue gas. Summary of the Invention

[0003] The purpose of the utility model is to provide a desulfurization and denitrification device for coking flue gas to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, one of the purposes of the utility model is to provide a desulfurization and denitrification device for coking flue gas, including a liquid storage bucket filled with a treatment liquid for purifying coking flue gas. An air inlet mechanism is provided on the liquid storage bucket, and the air inlet mechanism passes the coking flue gas into the treatment liquid. The air inlet mechanism includes an air inlet rotating rod rotatably connected to the top of the liquid storage bucket. The lower end of the air inlet rotating rod is arranged inside the liquid storage bucket. An air outlet is opened at the lower end of the air inlet rotating rod and is arranged in the treatment liquid. A plurality of stirring rods are fixedly arranged at a position near the bottom of the air inlet rotating rod. A plurality of crushing rods are fixedly arranged on the stirring rods. The stirring rods and crushing rods rotating with the air inlet rotating rod crush the bubbles in the treatment liquid. A spraying mechanism is arranged inside the liquid storage bucket, and the spraying mechanism is used for spraying the treatment liquid. The sprayed treatment liquid performs secondary purification on the coking flue gas.

[0005] As a further improvement of this technical solution, two filter plates are fixedly arranged inside the liquid storage bucket and are placed one above the other. The filter plates are used for filtering impurities in the treatment liquid, and the stirring rods and crushing rods are located between the two filter plates.

[0006] As a further improvement of this technical solution, the spraying mechanism includes an annular spraying pipe fixedly arranged at the inner top of the liquid storage bucket. The annular spraying pipe is coaxially sleeved outside the air inlet rotating rod. A plurality of spraying holes are opened on the lower surface of the annular spraying pipe, and the annular spraying pipe sprays the treatment liquid through the spraying holes.

[0007] As a further improvement of the present technical solution, the spraying mechanism further includes a liquid pump fixedly arranged at a position near the top outside the liquid storage barrel. The liquid pump is communicated with the annular spraying pipe through a liquid outlet pipe. The liquid inlet end of the liquid pump is fixedly provided with a liquid inlet pipe. The end of the liquid inlet pipe away from the liquid pump penetrates through the position near the bottom outside the liquid storage barrel, and the working liquid pump fills the annular spraying pipe with the treatment liquid.

[0008] As a further improvement of the present technical solution, a motor is fixedly arranged at the top of the liquid storage barrel through a mounting shell. The output shaft of the motor is coaxially driven and connected with a transmission gear through a coupling. The upper end of the air inlet rotating rod penetrates through the top of the liquid storage barrel. A driven gear is coaxially and fixedly arranged on the outer surface of the air inlet rotating rod near the top. The transmission gear and the driven gear are both located inside the mounting shell and are engaged with each other. The upper end of the air inlet rotating rod is rotatably connected with a ventilation pipe.

[0009] As a further improvement of the present technical solution, a discharge pipe is fixedly arranged at a position near the bottom of the outer surface of the liquid storage barrel. A discharge valve is fixedly arranged inside the discharge pipe and is communicated with the liquid storage barrel. The discharge pipe is located between two filter plates.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] 1. For this coking flue gas desulfurization and denitrification device, by arranging an air inlet mechanism to introduce coking flue gas into the treatment liquid in the liquid storage barrel, at the same time, the air inlet rotating rod drives the stirring rod and the crushing rod to rotate to crush the bubbles in the treatment liquid, so that the coking flue gas and the treatment liquid react fully, improving the purification effect of the treatment liquid on the coking flue gas. When the treated flue gas floats out from the treatment liquid, the spraying mechanism sprays out the treatment liquid to perform secondary purification on the gas inside the liquid storage barrel, further improving the purification effect of the coking flue gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is one of the overall three-dimensional structure diagrams of the present utility model;

[0013] Figure 2 is the second of the overall three-dimensional structure diagrams of the present utility model;

[0014] Figure 3 is one of the sectional three-dimensional structure diagrams of the present utility model;

[0015] Figure 4 is the second of the sectional three-dimensional structure diagrams of the present utility model;

[0016] Figure 5 is the third of the sectional three-dimensional structure diagrams of the present utility model.

[0017] The meanings of the various reference numerals in the figure are as follows:

[0018] 1. Liquid storage barrel; 11. Filter plate;

[0019] 2. Intake mechanism; 21. Intake rotating rod; 22. Stirring rod; 23. Crushing rod; 24. Motor; 25. Driving gear; 26. Driven gear;

[0020] 3. Spraying mechanism; 31. Annular spraying pipe; 32. Liquid pump; 33. Liquid inlet pipe. Specific implementation manner

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment

[0022] Please refer to Figures 1 - 5 As shown, one of the purposes of this embodiment is to provide a coking flue gas desulfurization and denitrification device, including a liquid storage barrel 1 filled with a treatment liquid for purifying coking flue gas. An intake mechanism 2 is provided on the liquid storage barrel 1, and the intake mechanism 2 introduces coking flue gas into the interior of the treatment liquid. The intake mechanism 2 includes an intake rotating rod 21 rotatably connected to the top of the liquid storage barrel 1. The lower end of the intake rotating rod 21 is disposed inside the liquid storage barrel 1. An air outlet is provided at the lower end of the intake rotating rod 21 and is disposed in the treatment liquid. A ventilation pipe is rotatably connected to the upper end of the intake rotating rod 21. Coking flue gas is introduced into the interior of the intake rotating rod 21 through the ventilation pipe, and the coking flue gas is introduced into the interior of the treatment liquid through the air outlet at the lower end of the intake rotating rod 21. By bringing the treatment liquid into contact with the coking flue gas, the treatment liquid purifies the coking flue gas, preventing the coking flue gas from being discharged into the air and affecting the air quality.

[0023] To facilitate the treatment of impurities in the coking flue gas in the treatment liquid, two filter plates 11 placed one above the other are fixedly provided inside the liquid storage barrel 1, and the air outlet at the lower end of the intake rotating rod 21 is located between the two filter plates 11. The filter plates 11 are used to filter impurities in the treatment liquid, blocking the impurities generated by the reaction between the coking flue gas and the treatment liquid between the two filter plates 11 to ensure that the spraying mechanism 3 does not absorb the treatment liquid with impurities. At the same time, the stirring rod 22 and the crushing rod 23 are located between the two filter plates 11. A discharge pipe is fixedly provided at a position near the bottom on the outer surface of the liquid storage barrel 1. A discharge valve is fixedly provided inside the discharge pipe, and the discharge pipe is communicated with the liquid storage barrel 1. The discharge pipe is located between the two filter plates 11. The impurities generated by the purification of the coking flue gas are restricted between the two filter plates 11 by the two filter plates 11. When the discharge valve is opened, the impurities between the two filter plates 11 are discharged through the discharge pipe, facilitating the continuous use of the device in the future.

[0024] When coking flue gas enters the treatment liquid, bubbles are easily generated. However, the coking flue gas inside the bubbles is directly discharged without contacting and reacting with the treatment liquid, resulting in a decrease in the purification effect of the coking flue gas. In order to improve the purification effect of the coking flue gas, a motor 24 is fixedly arranged on the top of the liquid storage barrel 1 through a mounting shell. The output shaft of the motor 24 is coaxially connected to a transmission gear 25 through a coupling. The upper end of the air intake rotating rod 21 passes through the top of the liquid storage barrel 1. A driven gear is coaxially fixedly arranged on the outer surface of the air intake rotating rod 21 near the top. The wheel 26, the transmission gear 25 and the driven gear 26 are all located inside the mounting shell and meshed. A plurality of stirring rods 22 are fixedly arranged near the bottom of the air intake rotating rod 21. A plurality of crushing rods 23 are fixedly arranged on the stirring rod 22. When the air intake rotating rod 21 rotates, the stirring rod 22 and the crushing rod 23 are driven to rotate. The stirring rod 22 and the crushing rod 23 rotating with the air intake rotating rod 21 crush the bubbles in the treatment liquid, so that the coking flue gas can fully contact with the treatment liquid. During the rotation of the air intake rotating rod 21, The air intake rotating rod 21 rotates with the ventilation pipe, the ventilation pipe is connected with an external pipeline, the coking smoke is transported from the external pipeline to the ventilation pipe, and then the ventilation pipe transports the coking smoke to the air intake rotating rod 21. When the coking smoke is poured into the processing liquid through the air intake rotating rod 21, the motor 24 drives the transmission gear 25 to rotate, and drives the air intake rotating rod 21 to rotate through the meshing driven gear 26, thereby driving the stirring rod 22 and the crushing rod 23 to rotate. The rotating stirring rod 22 and the crushing rod 23 exert pressure on the processing liquid. The bubbles generated by the coking flue gas injected into the interior are broken, so that the coking flue gas and the treatment liquid can fully contact and react with each other, thereby improving the purification effect of the treatment liquid on the coking flue gas. At the same time, the stirring rod 22 and the breaking rod 23 are located between the two filter plates 11. During the stirring process of the stirring rod 22 and the breaking rod 23, the impurities between the two filter plates 11 will move with the rotation of the treatment liquid, causing the impurities to fall off the filter plate 11, thereby avoiding the accumulation of impurities and clogging the filter plate 11, resulting in a decrease in the filtering effect of the filter plate 11.

[0025] When the coking flue gas flies out from inside the treatment liquid, there is coking flue gas that has not reacted with the treatment liquid. To prevent the unpurified coking flue gas from being discharged into the air, a spraying mechanism 3 is provided inside the liquid storage barrel 1. The spraying mechanism 3 is used to spray the treatment liquid. The sprayed treatment liquid comes into contact with the coking flue gas, enabling the treatment liquid to perform secondary purification on the coking flue gas. Among them, the spraying mechanism 3 includes an annular spraying pipe 31 fixedly arranged at the inner top of the liquid storage barrel 1. The annular spraying pipe 31 is coaxially sleeved outside the intake rotating rod 21. A number of spraying holes are opened on the lower surface of the annular spraying pipe 31. The annular spraying pipe 31 sprays the treatment liquid through the spraying holes. The spraying mechanism 3 also includes a liquid pump 32 fixedly arranged at a position near the top outside the liquid storage barrel 1. The liquid pump 32 is connected to the annular spraying pipe 31 through a liquid outlet pipe. The liquid inlet end of the liquid pump 32 is fixedly provided with a liquid inlet pipe 33. One end of the liquid inlet pipe 33 away from the liquid pump 32 penetrates through the position near the bottom outside the liquid storage barrel 1. The working liquid pump 32 fills the inside of the annular spraying pipe 31 with the treatment liquid. When the liquid pump 32 works, the treatment liquid inside the liquid storage barrel 1 is filled into the annular spraying pipe 31 through the liquid inlet pipe 33 and the liquid outlet pipe, and the treatment liquid is sprayed into the liquid storage barrel 1 through the spraying holes at the bottom of the annular spraying pipe 31. The sprayed treatment liquid performs secondary purification on the unpurified coking flue gas inside the liquid storage barrel 1, thereby further improving the purification effect of the device on the coking flue gas.

[0026] In summary, the working principle of this solution is as follows: First, the coking flue gas is introduced into the treatment liquid through the air outlet at the lower end of the intake rotating rod 21. The treatment liquid purifies the coking flue gas entering the inside. At the same time, the motor 24 works to drive the transmission gear 25 to rotate, and drives the intake rotating rod 21 to rotate through the meshing driven gear 26, thereby driving the stirring rod 22 and the crushing rod 23 to rotate, breaking the bubbles generated by filling the coking flue gas into the treatment liquid, enabling the coking flue gas to fully contact and react with the treatment liquid, and improving the purification effect of the treatment liquid on the coking flue gas. Subsequently, when the coking flue gas inside the treatment liquid flies out, the liquid pump 32 works, and the treatment liquid inside the liquid storage barrel 1 is filled into the annular spraying pipe 31 through the liquid inlet pipe 33 and the liquid outlet pipe, and the treatment liquid is sprayed into the liquid storage barrel 1 through the spraying holes at the bottom of the annular spraying pipe 31. The sprayed treatment liquid performs secondary purification on the unpurified coking flue gas inside the liquid storage barrel 1, thereby further improving the purification effect of the device on the coking flue gas.

[0027] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A coking flue gas desulfurization and denitrification device, comprising a liquid storage tank (1), wherein the liquid storage tank (1) is filled with a treatment liquid for purifying coking flue gas, and is characterized in that: The liquid storage barrel (1) is provided with an air intake mechanism (2), and the air intake mechanism (2) passes the coking flue gas into the treatment liquid. The air intake mechanism (2) comprises an air intake rotating rod (21) rotatably connected to the top of the liquid storage barrel (1), the lower end of the air intake rotating rod (21) is arranged inside the liquid storage barrel (1), and an air outlet is opened at the lower end of the air intake rotating rod (21), and the air outlet is arranged in the treatment liquid. A plurality of stirring rods (22) are fixedly arranged near the bottom of the air intake rotating rod (21), and a plurality of crushing rods (23) are fixedly arranged on the stirring rod (22). The stirring rods (22) and the crushing rods (23) rotate with the air intake rotating rod (21) to crush bubbles in the treatment liquid. A spray mechanism (3) is provided inside the liquid storage barrel (1), and the spray mechanism (3) is used to spray the treatment liquid, and the sprayed treatment liquid performs secondary purification on the coking flue gas.

2. The coking flue gas desulfurization and denitrification device according to claim 1, wherein: Two filter plates (11) placed one above the other are fixedly arranged inside the liquid storage barrel (1), the filter plates (11) being used to filter impurities in the treatment liquid, and the stirring rod (22) and the crushing rod (23) being located between the two filter plates (11).

3. The coking flue gas desulfurization and denitrification device according to claim 1, wherein: The spray mechanism (3) comprises an annular spray pipe (31) fixedly arranged at the top of the liquid storage barrel (1), the annular spray pipe (31) being coaxially sleeved on the outside of the air intake rotating rod (21), a plurality of spray holes being formed on the lower surface of the annular spray pipe (31), and the annular spray pipe (31) spraying the treatment liquid through the spray holes.

4. The coking flue gas desulfurization and denitrification device according to claim 3, wherein: The spray mechanism (3) further comprises a liquid pump (32) fixedly arranged on the outside of the liquid storage barrel (1) near the top, the liquid pump (32) being connected to the annular spray pipe (31) via a liquid outlet pipe, a liquid inlet pipe (33) being fixedly arranged at the liquid inlet end of the liquid pump (32), the end of the liquid inlet pipe (33) away from the liquid pump (32) passing through the outside of the liquid storage barrel (1) near the bottom, and the working liquid pump (32) pours the treated liquid into the inside of the annular spray pipe (31).

5. The coking flue gas desulfurization and denitrification device according to claim 1, wherein: A motor (24) is fixedly arranged on the top of the liquid storage barrel (1) via a mounting shell, and an output shaft of the motor (24) is coaxially connected to a transmission gear (25) via a coupling. The upper end of the air intake rotating rod (21) passes through the top of the liquid storage barrel (1), and a driven gear (26) is coaxially fixedly arranged on the outer surface of the air intake rotating rod (21) near the top. The transmission gear (25) and the driven gear (26) are both located inside the mounting shell and meshed with each other, and the upper end of the air intake rotating rod (21) is rotatably connected to a ventilation pipe.

6. The coking flue gas desulfurization and denitrification device according to claim 2, characterized in that: A discharge pipe is fixedly provided on the outer surface of the liquid storage barrel (1) near the bottom, a discharge valve is fixedly provided inside the discharge pipe and is connected to the liquid storage barrel (1), and the discharge pipe is located between the two filter plates (11).

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