Waste gas treatment device for coal tar processing storage tank

Abstract

The utility model relates to a waste gas treatment device for a coal tar processing storage tank, which is characterized in that the lower end of a rotating pipe (25) extends into a treatment box (10) and is provided with a plurality of stirring rods (26), and the stirring rods (26) are provided with a plurality of gas spraying holes (27) communicated with the interior of the rotating pipe (25); the rotating pipe (25) is provided with an external thread (28), and the treatment box (10) is correspondingly provided with a threaded hole (29); an air inlet fan (22) sends waste gas generated by the coal tar processing storage tank into an adsorption box (23) for preliminary adsorption so as to adsorb and filter large-particle impurities in the waste gas, the waste gas passes through a corrugated pipe (24) and a rotating pipe (25) and is introduced into purification liquid from gas spraying holes (27) in a stirring rod (26) so as to purify the waste gas, meanwhile, the rotating pipe (25) can rotate in a reciprocating mode and move up and down, and therefore the waste gas is purified. A stirring rod (26) is driven to stir the purification liquid and the waste gas at the same time, so that the waste gas is in full contact with the purification liquid, and the waste gas purification effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal tar processing, in particular to a waste gas treatment device for a coal tar processing storage tank. Background Art

[0002] Coal tar processing companies store asphalt, anthracene oil, industrial naphthalene, washing oil, and other oil products in storage tanks. These stored oil products emit asphalt smoke, H2S, BaP, naphthalene dust, ammonia, and other waste gases during processing, storage, or loading and unloading. These waste gases contain a large number of toxic and carcinogenic substances and need to be treated using a waste gas treatment device before discharge. Otherwise, they will cause environmental pollution and affect human health. A Chinese utility model patent with authorization announcement number CN215388307U discloses a coal tar pitch waste gas purification system. Large particles of impurities in the waste gas are adsorbed and filtered through a filter screen, which is easy to clean. The waste gas is discharged into a purified liquid through an air duct. The air duct moves back and forth in the purified liquid, or a uniform distribution plate is set at the bottom of the air duct to ensure good contact between the waste gas and the purified liquid, resulting in sedimentation and purification. However, in actual use, the above solution still does not provide sufficient contact between the waste gas and the purified liquid, affecting the waste gas purification effect. Utility Model Content

[0003] The technical problem to be solved by the present invention is that the contact between the waste gas and the purification liquid in the existing coal tar pitch waste gas purification system is still not sufficient during actual use, which affects the waste gas purification effect.

[0004] In order to solve the above problems, the utility model provides a coal tar processing storage tank waste gas treatment device, an exhaust port is provided on one side of the processing box, and its characteristics are that the upper side of the processing box is opened and provided with a cover plate, an air intake fan and an adsorption box are provided on the cover plate, the output end of the air intake fan is connected to one side of the adsorption box, and the other side of the adsorption box is connected to a bellows, and the lower end of the bellows is connected to a rotating tube, the lower end of the rotating tube is extended into the processing box and is provided with a plurality of stirring rods, and a plurality of jet holes connected to the interior of the rotating tube are provided on the stirring rod to pass the waste gas into the purified liquid; the rotating tube is provided with an external thread, and the processing box is provided with a corresponding threaded hole, so that the rotating tube can move while rotating.

[0005] The waste gas treatment device for coal tar processing storage tanks provided by the utility model also has the following technical features:

[0006] A reciprocating gear is rotatably provided on the cover plate, a through hole is provided on the reciprocating gear, a key is provided in the through hole, and a key groove is correspondingly provided on the rotating tube.

[0007] The cover plate is provided with a motor, a turntable is provided on the output shaft of the motor, and a plurality of shifting rods are provided on the side surface of the turntable at intervals along its circumference; a vertical shaft is provided for rotation on the cover plate, an intermediate gear is provided on the vertical shaft, the two intermediate gears are arranged opposite to each other and are both engaged with the reciprocating gear, and the shifting rod is engaged with one of the two intermediate gears, so that the two intermediate gears rotate alternately.

[0008] The stirring rod is provided with uniformly distributed holes along its length direction, the ends of the uniformly distributed holes are communicated with the interior of the rotating tube, and the upper and lower sides of the uniformly distributed holes are both communicated with air jet holes.

[0009] The aperture of the air-jet holes gradually decreases from being close to to being far away from the uniformly distributed holes.

[0010] The adsorption box is provided with multiple vertical adsorption plates in sequence in a horizontal direction, and the air intake fan and the bellows are respectively arranged on both sides of the adsorption plates; the upper side of the adsorption box is provided with multiple air inlets, and the lower side is provided with multiple air outlets. The air inlets and air outlets are both arranged on the side of the adsorption plate close to the air intake fan, and a collection box connected to the air outlet is provided on the cover plate.

[0011] An air inlet cover is provided on the upper side of the adsorption box, and an air outlet cover is provided on the lower side. A purge fan connected to the interior of the air inlet cover is provided, and the air outlet cover is connected to the collection box through a collection pipe.

[0012] The utility model has the following beneficial effects: the air intake fan sends the exhaust gas generated by the coal tar processing storage tank into the adsorption box for preliminary adsorption to adsorb and filter large particles of impurities in the exhaust gas, and the exhaust gas passes through the bellows, the rotating tube and the jet hole on the stirring rod into the purification liquid to purify the exhaust gas. At the same time, the rotating tube can rotate back and forth and move up and down, driving the stirring rod to stir the purification liquid and the exhaust gas at the same time, so that the exhaust gas is fully in contact with the purification liquid, thereby improving the exhaust gas purification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a partial cross-sectional view of the utility model;

[0014] Figure 2 for Figure 1 A partial enlarged view of

[0015] Figure 3 for Figure 2 Exploded view of local structural parts. DETAILED DESCRIPTION

[0016] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other.

[0017] like Figures 1 to 3As shown, the utility model is a waste gas treatment device for coal tar processing storage tanks. An exhaust port 11 is provided on one side of the treatment box 10, and is characterized in that the upper side of the treatment box 10 is opened and provided with a cover plate 21. An air intake fan 22 and an adsorption box 23 are provided on the cover plate 21. The output end of the air intake fan 22 is connected to one side of the adsorption box 23, and the other side of the adsorption box 23 is connected to a bellows 24. The lower end of the bellows 24 is connected to a rotating tube 25. The lower end of the rotating tube 25 extends into the treatment box 10 and is provided with a plurality of stirring rods 26. The stirring rod 26 is provided with a plurality of jet holes 27 connected to the inside of the rotating tube 25 to pass the waste gas into the purified liquid; an external thread 28 is provided on the rotating tube 25, and a corresponding threaded hole 29 is provided on the treatment box 10, so that the rotating tube 25 can move while rotating.

[0018] The air intake fan 22 sends the exhaust gas generated by the coal tar processing storage tank into the adsorption box 23 for preliminary adsorption to adsorb and filter large particles of impurities in the exhaust gas. The exhaust gas passes through the bellows 24, the rotating tube 25 and the jet hole 27 on the stirring rod 26 into the purification liquid to purify the exhaust gas. At the same time, the rotating tube 25 can rotate back and forth and move up and down, driving the stirring rod 26 to stir the purification liquid and the exhaust gas at the same time, so that the exhaust gas is in full contact with the purification liquid, thereby improving the exhaust gas purification effect.

[0019] The purification liquid can be saturated salt water, tar washing oil or others to purify and absorb water-soluble H2S, BaP, ammonia, and oil-soluble naphthalene dust and asphalt smoke in the exhaust gas.

[0020] A liquid inlet 12 is provided at the upper portion of the other side of the processing box 10 , and a liquid outlet 13 is provided at the lower portion thereof, so as to facilitate the addition and discharge of the purified liquid.

[0021] The exhaust port 11 , the liquid inlet 12 and the liquid outlet 13 are all provided with valves.

[0022] The lower end of the bellows 24 is rotatably and sealedly connected to the upper end of the rotating tube 25. Specifically, the lower end of the bellows 24 and the upper end of the rotating tube 25 are respectively provided with connecting plates, and the connecting plates are respectively provided with sealing rings and bearings.

[0023] Among them, the input end of the air intake fan 22 is connected to the top of the coal tar processing storage tank, and a gas safety valve, a breathing valve, a pressure gauge and a nitrogen supply system are set on the storage tank. The nitrogen supply system uses nitrogen as the gas source and is equipped with a self-operated pressure regulating valve. The self-operated pressure regulating valve pressure pipe is connected to the top of the storage tank. When the pressure of the pressure regulating valve pressure pipe is adjusted to be lower than -2KPa, nitrogen is automatically added to the storage tank to ensure that the tank pressure is not lower than -2KPa; the exhaust port 11 can be connected to an incinerator to further burn the discharged exhaust gas.

[0024] Preferably, see Figure 2 、 Figure 3 A reciprocating gear 30 is rotatably provided on the cover plate 21 , a through hole 31 is opened on the reciprocating gear 30 , a key 32 is provided in the through hole 31 , and a key groove 33 is correspondingly provided on the rotating tube 25 .

[0025] The reciprocating gear 30 drives the rotating tube 25 to rotate, and the rotating tube 25 can reciprocate up and down along the through hole 31 .

[0026] Preferably, the cover plate 21 is provided with a motor 34, a turntable 35 is provided on the output shaft of the motor 34, and a plurality of shifting rods 36 are provided on the side surface of the turntable 35 along its circumferential interval; a vertical shaft 37 is rotatably provided on the cover plate 21, and an intermediate gear 38 is provided on the vertical shaft 37. The two intermediate gears 38 are arranged opposite to each other and are both engaged with the reciprocating gear 30. The shifting rod 36 is engaged with one of the two intermediate gears 38, so that the two intermediate gears 38 rotate alternately.

[0027] A person skilled in the art can select and set the size, spacing, and specific location of the lever 36 so that the lever 36 can only engage with one of the two intermediate gears 38, thereby causing the two intermediate gears 38 to rotate alternately. For example, the angle formed by the line connecting the lever 36 located at the edge and the center of the turntable 35 can be set to be less than 180°. The end of the lever 36 is chamfered so that it can be inserted into the adjacent teeth of the intermediate gear 38 to drive the intermediate gear 38 to rotate.

[0028] Preferably, the stirring rod 26 is provided with uniformly distributed holes 39 along its length, the ends of the uniformly distributed holes 39 are connected to the interior of the rotating tube 25 , and the upper and lower sides of the uniformly distributed holes 39 are both connected to the air injection holes 27 .

[0029] The rotating stirring rod 26 simultaneously introduces the exhaust gas in both the upward and downward directions, further improving the contact degree between the exhaust gas and the purification liquid.

[0030] Preferably, the aperture of the air injection holes 27 gradually decreases from close to to far away from the uniformly distributed holes 39, so as to increase the pressure and flow rate of the exhaust gas discharge, and facilitate the ventilation of the exhaust gas into the purification liquid.

[0031] Preferably, a plurality of longitudinally arranged adsorption plates 41 are arranged in sequence in a horizontal direction in the adsorption box 23, and the air intake fan 22 and the bellows 24 are respectively arranged on both sides of the adsorption plate 41; a plurality of air inlets 42 are opened on the upper side of the adsorption box 23, and a plurality of air outlets 43 are opened on the lower side. The air inlets 42 and the air outlets 43 are both arranged on the side of the adsorption plate 41 close to the air intake fan 22, and the air outlet end of the air inlet 42 can be tilted toward the adsorption plate 41, and a collecting box 44 connected to the air outlet 43 is provided on the cover plate 21.

[0032] Preferably, the adsorption box 23 is provided with an air inlet cover 45 on the upper side and an air outlet cover 46 on the lower side. The air inlet cover 45 is provided with a purge fan 47 connected to the interior thereof, and the air outlet cover 46 is connected to the collection box 44 through a collection pipe 48.

[0033] When the adsorption plate 41 needs to be cleaned regularly, the purge fan 47 is started to blow air toward the corresponding adsorption plate 41 through the air inlet hood 45 and the air inlet 42 to blow off the large particles of impurities attached to the adsorption plate 41 and collect them in the collection box 44 along the air outlet 43, the air outlet hood 46, and the collection pipe 48, so that the cleaning is more thorough and convenient for recycling.

[0034] The air inlet hood 45 and the air outlet hood 46 are detachably connected to the adsorption box 23. The air outlet hood 46 is mounted on the collection box 44 via a support rod 49, and the purge fan 47 is mounted on the air inlet hood 45 via a support rod 49. The bottom surfaces of the air inlet hood 45 and the air outlet hood 46 can be configured to be conical to facilitate airflow.

[0035] Among them, the air intake fan 22, the motor 34, and the purge fan 47 are all equipped with corresponding power supplies and control modules to control their start and stop.

[0036] The working principle of this utility model is as follows:

[0037] The air intake fan 22 sends the exhaust gas generated by the coal tar processing storage tank into the adsorption box 23, and the large particles of impurities in the exhaust gas are adsorbed and filtered through the adsorption plate 41; when the adsorption plate 41 needs to be cleaned regularly, the purge fan 47 is started to blow air to the corresponding adsorption plate 41 through the air inlet hood 45 and the air inlet 42 to blow off the large particles of impurities attached to the adsorption plate 41, and collect them along the air outlet 43, the air outlet hood 46, and the collection pipe 48 to the collection box 44, so that the cleaning is cleaner and more thorough, and it is convenient for recycling.

[0038] The exhaust gas passes through the bellows 24 and the rotating tube 25 and enters the purified liquid from the jet hole 27 on the stirring rod 26 to purify the exhaust gas. At the same time, the output shaft of the motor 34 drives the turntable 35 and the lever 36 to rotate continuously, driving the two intermediate gears 38 to rotate alternately and correspondingly, and driving the reciprocating gear 30 to rotate forward and backward. Under the action of the key 32 and the keyway 33, the rotating tube 25 can rotate forward and backward. At the same time, the external thread 28 and the threaded hole 29 on the rotating tube 25 cooperate with each other, so that the rotating tube 25 can move back and forth, thereby realizing that the stirring rod 26 can simultaneously stir the purified liquid and the exhaust gas in the form of forward and backward rotation and up and down reciprocating movement, so that the exhaust gas is fully in contact with the purified liquid, thereby improving the exhaust gas purification effect.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A coal tar processing tank waste gas treatment device, wherein a treatment box (10) is provided with an exhaust port (11) on one side thereof, characterized in that: The upper side of the treatment box (10) is open and provided with a cover plate (21), and an air intake fan (22) and an adsorption box (23) are provided on the cover plate (21). The output end of the air intake fan (22) is connected to one side of the adsorption box (23), and the other side of the adsorption box (23) is connected to a bellows (24). The lower end of the bellows (24) is connected to a rotating tube (25), and the lower end of the rotating tube (25) extends into the treatment box (10) and is provided with a plurality of stirring rods (26). The stirring rods (26) are provided with a plurality of jet holes (27) that are connected to the inside of the rotating tube (25) to pass the waste gas into the purified liquid; the rotating tube (25) is provided with an external thread (28), and the treatment box (10) is provided with a corresponding threaded hole (29), so that the rotating tube (25) can move while rotating.

2. The coal tar processing tank waste gas treatment device according to claim 1 is characterized in that: A reciprocating gear (30) is rotatably provided on the cover plate (21), a through hole (31) is provided on the reciprocating gear (30), a key (32) is provided in the through hole (31), and a key groove (33) is correspondingly provided on the rotating tube (25).

3. The coal tar processing tank waste gas treatment device according to claim 2, characterized in that: The cover plate (21) is provided with a motor (34), a turntable (35) is provided on the output shaft of the motor (34), and a plurality of shifting rods (36) are provided on the side surface of the turntable (35) at intervals along its circumference; a vertical shaft (37) is rotatably provided on the cover plate (21), and an intermediate gear (38) is provided on the vertical shaft (37); two intermediate gears (38) are arranged opposite to each other and both mesh with the reciprocating gear (30); the shifting rod (36) meshes with one of the two intermediate gears (38), so that the two intermediate gears (38) rotate alternately.

4. The coal tar processing tank waste gas treatment device according to claim 1, characterized in that: The stirring rod (26) is provided with uniformly distributed holes (39) along its length, the ends of the uniformly distributed holes (39) are connected to the interior of the rotating tube (25), and the upper and lower sides of the uniformly distributed holes (39) are both connected to the air injection holes (27).

5. The coal tar processing tank waste gas treatment device according to claim 4, characterized in that: The aperture of the air injection hole (27) gradually decreases from being close to to being far away from the uniformly distributed hole (39).

6. The coal tar processing tank waste gas treatment device according to claim 1, characterized in that: The adsorption box (23) is provided with a plurality of longitudinally arranged adsorption plates (41) in sequence in a transverse direction, and an air intake fan (22) and a bellows (24) are respectively provided on both sides of the adsorption plate (41); a plurality of air inlets (42) are provided on the upper side of the adsorption box (23), and a plurality of air outlets (43) are provided on the lower side, and the air inlets (42) and the air outlets (43) are both provided on a side of the adsorption plate (41) close to the air intake fan (22); and a collecting box (44) connected to the air outlet (43) is provided on the cover plate (21).

7. The coal tar processing tank exhaust gas treatment device according to claim 6, characterized in that: The adsorption box (23) is provided with an air inlet cover (45) on the upper side and an air outlet cover (46) on the lower side. The air inlet cover (45) is provided with a purge fan (47) connected to the interior thereof. The air outlet cover (46) is connected to the collection box (44) through a collection pipe (48).

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