Metering hole exhaust gas collecting device

Abstract

The utility model relates to a metering hole exhaust collecting device, which belongs to the technical field of storage tank exhaust collecting and comprises a separator and a dissolving tank, an exhaust end of the separator is connected with the dissolving tank, dissolving liquid is arranged in the dissolving tank, and an exhaust pipe is arranged at the top of the dissolving tank. According to the device, phenol crystals and phenol volatile gas are separated through the separator, the separated phenol volatile gas is conveyed into the dissolving tank, phenol waste gas is absorbed through the dissolving solution, purification of the waste gas is achieved, the purified waste gas can be exhausted from the exhaust pipe, and collection of the volatile gas and the phenol crystals is achieved; bubbles formed by conveying phenol volatile gas into a dissolving solution are scattered, the contact area of waste gas and the dissolving solution is increased, the phenol waste gas absorption effect of the dissolving solution is improved, and by arranging a fixing disc and a sealing disc, the moving distance of the bubbles in the horizontal direction is increased, and the moving time of the bubbles in the dissolving solution is prolonged.

Description

Technical Field

[0001] The utility model relates to a metering hole exhaust gas collection device, belonging to the technical field of storage tank exhaust gas collection. Background Art

[0002] Chemical storage units set up storage tanks to store liquid materials. Safety accessories such as single breathing valves, breathing valves, emergency pressure relief valves, and metering holes are provided at the top of the storage tanks. In order to accurately measure the quantity of materials in the storage tanks, in addition to electronic remote transmission devices such as differential pressure transmitters and radar level gauges installed on the storage tanks, a measurer still needs to go up to the tank to take measurements with a tape measure to accurately measure the liquid level.

[0003] During the process of taking measurements with a tape measure, it is first necessary to close the nitrogen seal, and then open the metering hole for operation. However, in the case of a phenol storage tank, a small amount of phenol crystals will adhere to the upper end of the metering hole. Moreover, when the storage tank is in a positive pressure state and the metering hole is opened, the pressurized phenol volatile gas will overflow, along with phenol crystals. After contacting the human body, it is easy to cause burns to the human body, with great potential safety hazards, and it is also easy to cause pollution to the soil and water bodies.

[0004] Therefore, a metering hole exhaust gas collection device is needed to achieve the collection of volatile gases and phenol crystals. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is: in order to overcome the deficiencies of the prior art, to provide a metering hole exhaust gas collection device that can achieve the collection of volatile gases and phenol crystals.

[0006] The technical solution adopted by the utility model to solve the above problems is: a metering hole exhaust gas collection device, including a separator and a dissolution tank. The exhaust end of the separator is connected to the dissolution tank. A dissolution liquid is provided in the dissolution tank, and an exhaust pipe is provided at the top of the dissolution tank.

[0007] Preferably, the separator includes a main body. An air inlet pipe, a connecting pipe, and a discharge pipe are provided on the main body. The connecting pipe is connected to the dissolution tank, and a separation system is provided inside the main body.

[0008] Preferably, a valve is provided on the air inlet pipe.

[0009] Preferably, an auxiliary mechanism is provided in the dissolution tank. The auxiliary mechanism includes a connecting ring. One end of the connecting ring is sealed and fixedly connected to a fixed disk, and the other end of the connecting ring is sealed and fixedly connected to a sealing disk. The fixed disk and the sealing disk are arranged up and down. The fixed disk is sealed and fixedly connected to the inner wall of the dissolution tank. There are gaps between the connecting ring and the sealing disk and the inner wall of the dissolution tank. Through holes are provided on the connecting ring, and round holes are provided on the fixed disk.

[0010] Preferably, a plurality of connecting rings are provided, and the plurality of connecting rings are distributed from top to bottom.

[0011] Preferably, among two adjacent connecting rings, the aperture of the through hole on the upper connecting ring is smaller than that of the through hole on the lower connecting ring.

[0012] Preferably, the aperture of the circular hole is smaller than the inner diameter of the connecting ring.

[0013] Preferably, the auxiliary mechanism further includes a stirring assembly for stirring the dissolving liquid.

[0014] Preferably, the stirring assembly includes a rotating shaft arranged vertically. An assembly hole is provided on the sealing disc. The rotating shaft sequentially passes through the circular hole and the assembly hole. A gap is provided between the rotating shaft and the inner wall of the circular hole. The rotating shaft is rotationally and sealingly connected to the inner wall of the assembly hole. The rotating shaft is driven by a driving source. A stirrer is provided in the cavity of the connecting ring, and the stirrer is installed on the driving shaft.

[0015] Preferably, multiple groups of through holes are provided on the connecting ring, and the multiple groups of through holes are distributed from top to bottom. Each group of through holes has a plurality of through holes, and the multiple through holes in the same group are circumferentially distributed around the axis of the connecting ring.

[0016] Compared with the prior art, the advantages of the present utility model are as follows:

[0017] 1. The phenol crystals and phenol volatile gas are separated by a separator, and the separated phenol volatile gas is then transported into the dissolving tank. The phenol waste gas is absorbed by the dissolving liquid to purify the waste gas. The purified waste gas can be discharged from the exhaust pipe, realizing the collection of the volatile gas and phenol crystals.

[0018] 2. By dispersing the bubbles formed by transporting the phenol volatile gas into the dissolving liquid, the contact area between the waste gas and the dissolving liquid is increased, improving the absorption effect of the dissolving liquid on the phenol waste gas.

[0019] 3. By providing a fixed disc and a sealing disc, the moving distance of the bubbles in the horizontal direction is increased, and the moving time of the bubbles in the dissolving liquid is increased, that is, the contact time between the waste gas and the dissolving liquid is increased, further improving the absorption effect of the dissolving liquid on the phenol waste gas.

[0020] 4. By stirring the dissolving liquid, it is convenient to improve the uniformity of the bubbles distributed in the dissolving liquid, further improving the absorption effect of the dissolving liquid on the phenol waste gas. Description of the Drawings

[0021] Figure 1 is a perspective view of a metering hole exhaust gas collection device of the present utility model;

[0022] Figure 2This is the front view of an exhaust gas collection device for a metering hole of the present utility model;

[0023] Figure 3 This is the left view of an exhaust gas collection device for a metering hole of the present utility model;

[0024] Figure 4 This is the top view of an exhaust gas collection device for a metering hole of the present utility model;

[0025] Figure 5 This is the sectional view of the dissolution tank;

[0026] Figure 6 This is the three - dimensional view of the auxiliary mechanism;

[0027] Figure 7 This is the sectional view of the auxiliary mechanism.

[0028] Wherein:

[0029] Separator 1, dissolution tank 2, exhaust pipe 3, drain pipe 4, auxiliary mechanism 5;

[0030] Main body 11, intake pipe 12, connecting pipe 13, discharge pipe 14, valve 15;

[0031] Fixed disk 51, sealing disk 52, connecting ring 53, through - hole 54, round hole 55, stirring assembly 56, assembly hole 57;

[0032] Rotating shaft 561, driving source 562, stirrer 563. Specific implementation mode

[0033] As Figure 1-7 shown, an exhaust gas collection device for a metering hole in this embodiment includes a separator 1 and a dissolution tank 2. The exhaust end of the separator 1 is connected to the dissolution tank 2. There is a dissolution liquid in the dissolution tank 2, and the dissolution liquid is an aqueous sodium hydroxide solution. An exhaust pipe 3 is arranged at the top of the dissolution tank 2, and a drain pipe 4 is arranged on one side of the dissolution tank 2. The separator 1 is used to separate phenol crystals and phenol volatile gases. The separated phenol volatile gases are then transported from the exhaust end of the separator 1 into the dissolution tank 2. Since phenol is weakly acidic and slightly soluble in water at normal temperature, the phenol waste gas is absorbed by the aqueous sodium hydroxide solution to achieve the purification of the waste gas. The purified waste gas can be transported from the exhaust pipe 3 to the main pipeline for tail gas recovery in the tank area for further treatment, and the dissolution liquid is replaced regularly. When replacing the dissolution liquid, the drain pipe 4 is opened, and the dissolved oxygen is discharged from the drain pipe 4. After the discharge is completed, the drain pipe 4 is closed. In fact, there is a water - adding port on the dissolution tank 2. After opening the water - adding port and transporting new dissolution liquid from the water - adding port into the dissolution tank 2, the water - adding port is then closed. In this way, the collection of volatile gases and phenol crystals is achieved;

[0034] An auxiliary mechanism 5 is arranged in the dissolution tank 2, and the auxiliary mechanism 5 is used to improve the effect of the dissolution liquid in absorbing phenol waste gas;

[0035] The auxiliary mechanism 5 includes three fixed disks 51, which are arranged at intervals from top to bottom. The fixed disks 51 are hermetically and fixedly connected to the inner wall of the dissolution tank 2. A sealing disk 52 is arranged between two adjacent fixed disks 51. There is a gap between the sealing disk 52 and the inner wall of the dissolution tank 2. A connecting ring 53 is arranged between the adjacent fixed disk 51 and the sealing disk 52. The connecting ring 53 is arranged vertically. The two ends of the connecting ring 53 are hermetically and fixedly connected to the fixed disk 51 and the sealing disk 52 respectively. There is a gap between the connecting ring 53 and the inner wall of the dissolution tank 2. A plurality of groups of through holes 54 are arranged on the connecting ring 53. The multiple groups of through holes 54 are distributed from top to bottom. Each group of through holes 54 has a plurality of through holes. The multiple through holes in the same group are circumferentially and evenly distributed around the axis of the connecting ring 53. A round hole 55 is arranged on the fixed disk 51;

[0036] The separated phenol volatile gas, that is, the waste gas, is then transported from the exhaust end of the separator 1 into the dissolution tank 2, and the connection end between the exhaust end of the separator 1 and the dissolution tank 2 is located below the auxiliary mechanism 5. Bubbles are formed in the dissolution liquid in the dissolution tank 2 and float upward. During the upward floating process of the bubbles, the bubbles can only first pass through the round hole 55 on the lowermost fixed disk 51 and enter the cavity of the lowermost connecting ring 53. The bubbles in the inner cavity of the connecting ring 53 are then discharged from the through holes 54 to the outside of the connecting ring 53. The through holes 54 cut off the bubbles, causing the bubbles to break up into small bubbles. After the small bubbles continue to float upward, they can only pass through the through holes 54 on the second connecting ring 53 from bottom to top and enter the inner cavity of the secondary connecting ring 53. Then, the bubbles pass through the round hole 55 on the second fixed disk 51 from bottom to top. After the bubbles float upward to above the auxiliary mechanism 5 in the above floating order, the bubbles float to the water surface of the dissolution liquid and burst. The phenol waste gas is absorbed by the dissolution liquid to achieve the purification of the waste gas. The purified waste gas is then discharged from the exhaust pipe 3. Here, by breaking up the bubbles and reducing the volume of the bubbles, the contact area between the waste gas and the dissolution liquid is increased, and the effect of the dissolution liquid in absorbing phenol waste gas is improved;

[0037] The aperture of the round hole 55 is smaller than the inner diameter of the connecting ring 53. In this way, the distance that the bubbles move in the horizontal direction is increased, and the moving time of the bubbles in the dissolution liquid is increased, that is, the contact time between the waste gas and the dissolution liquid is increased, and the effect of the dissolution liquid in absorbing phenol waste gas is improved again;

[0038] Among the two adjacent connecting rings 53 up and down, the aperture of the through holes 54 on the upper connecting ring 53 is smaller than the aperture of the through holes 54 on the lower connecting ring 53. In this way, during the upward floating of the bubbles, the bubbles are broken up multiple times, which is convenient for further reducing the volume of the bubbles, that is, further improving the effect of the dissolution liquid in absorbing phenol waste gas;

[0039] The auxiliary mechanism 5 further includes a stirring assembly 56 for stirring the dissolution liquid to improve the uniformity of the distribution of bubbles in the dissolution liquid, thereby enhancing the effect of the dissolution liquid in absorbing phenol waste gas;

[0040] The stirring assembly 56 includes a rotating shaft 561 arranged vertically. An assembly hole 57 is provided on the sealing disc 52. The rotating shaft 561 sequentially passes through each circular hole 55 and each assembly hole 57. A gap is provided between the inner wall of the rotating shaft 561 and the circular hole 55. The rotating shaft 561 is rotationally and sealingly connected to the inner wall of the assembly hole 57. The rotating shaft 561 is driven by a driving source 562, which can be a motor. The housing of the motor is fixedly arranged on the top of the tank body. A stirrer 563 is arranged in the cavity of the connecting ring 53. The stirrer 563 is installed on the driving shaft. During the startup of the motor, the stirrer 563 is driven to rotate by the driving shaft, thus realizing the stirring of the dissolution liquid;

[0041] The separator 1 includes a main body 11, on which an air inlet pipe 12, a connecting pipe 13 and a discharging pipe 14 are provided. The connecting pipe 13 is connected to the dissolution tank 2. A separation system is arranged in the main body 11. A valve 15 is provided on the air inlet pipe 12. During operation, the air inlet pipe 12 is connected to the metering hole of the storage tank. When the storage tank needs to be metered and gauged, the valve 15 is opened. The phenol volatile gas and phenol crystals discharged from the storage tank are conveyed into the main body 11 through the air inlet pipe 12. The phenol crystals and phenol volatile gas are separated by the separation system. The separated phenol crystals can be discharged from the discharging pipe 14, while the separated phenol volatile gas is conveyed into the dissolution tank 2 through the connecting pipe 13. When the pressure of the storage tank drops to atmospheric pressure, the gauging operation is carried out;

[0042] In summary, the phenol crystals and phenol volatile gas are separated by the separator 1. The separated phenol volatile gas is then conveyed into the dissolution tank 2. The phenol waste gas is absorbed by the dissolution liquid to realize the purification of the waste gas. The purified waste gas can be discharged from the exhaust pipe 3, realizing the collection of the volatile gas and phenol crystals. In addition, by dispersing the bubbles formed by conveying the phenol volatile gas into the dissolution liquid, the contact area between the waste gas and the dissolution liquid is increased, enhancing the effect of the dissolution liquid in absorbing phenol waste gas. Among them, by setting the fixed disc 51 and the sealing disc 52, the moving distance of the bubbles in the horizontal direction is increased, and the moving time of the bubbles in the dissolution liquid is increased, that is, the contact time between the waste gas and the dissolution liquid is increased, further enhancing the effect of the dissolution liquid in absorbing phenol waste gas. Moreover, by stirring the dissolution liquid, it is convenient to improve the uniformity of the distribution of bubbles in the dissolution liquid, further enhancing the effect of the dissolution liquid in absorbing phenol waste gas.

[0043] In addition to the above embodiments, the present utility model also includes other implementation manners. Any technical solutions formed by equivalent transformation or equivalent substitution shall fall within the protection scope of the claims of the present utility model.

Claims

1. A metering hole exhaust gas collection device, characterized in that: It includes a separator (1) and a dissolution tank (2). The exhaust end of the separator (1) is connected to the dissolution tank (2). A dissolution liquid is provided in the dissolution tank (2), and an exhaust pipe (3) is provided at the top of the dissolution tank (2). An auxiliary mechanism (5) is provided in the dissolution tank (2). The auxiliary mechanism (5) includes a connecting ring (53). One end of the connecting ring (53) is hermetically and fixedly connected to a fixed disk (51), and the other end of the connecting ring (53) is hermetically and fixedly connected to a sealing disk (52). The fixed disk (51) and the sealing disk (52) are arranged up and down. The fixed disk (51) is hermetically and fixedly connected to the inner wall of the dissolution tank (2). There is a gap between the connecting ring (53), the sealing disk (52) and the inner wall of the dissolution tank (2). A through hole (54) is provided on the connecting ring (53), and a round hole (55) is provided on the fixed disk (51). A plurality of connecting rings (53) are provided, and the plurality of connecting rings (53) are distributed from top to bottom. Among two adjacent connecting rings (53) up and down, the aperture of the through hole (54) on the upper connecting ring (53) is smaller than the aperture of the through hole (54) on the lower connecting ring (53). The aperture of the round hole (55) is smaller than the inner diameter of the connecting ring (53). The auxiliary mechanism (5) further includes a stirring assembly (56), and the stirring assembly (56) is used to stir the dissolution liquid. The stirring assembly (56) includes a rotating shaft (561). The rotating shaft (561) is arranged vertically. An assembly hole (57) is provided on the sealing disk (52). The rotating shaft (561) sequentially passes through the round hole (55) and the assembly hole (57). There is a gap between the rotating shaft (561) and the inner wall of the round hole (55). The rotating shaft (561) is rotationally and hermetically connected to the inner wall of the assembly hole (57). The rotating shaft (561) is driven by a driving source (562). A stirrer (563) is provided in the cavity of the connecting ring (53), and the stirrer (563) is installed on a driving shaft.

2. The metering hole exhaust gas collection device according to claim 1, characterized in that: The separator (1) includes a main body (11). An air inlet pipe (12), a connecting pipe (13) and a discharge pipe (14) are provided on the main body (11). The connecting pipe (13) is connected to the dissolution tank (2), and a separation system is provided in the main body (11).

3. The metering hole exhaust gas collection device according to claim 2, characterized in that: A valve (15) is provided on the air inlet pipe (12).

4. The metering hole exhaust gas collection device according to claim 1, wherein: Multiple groups of through holes (54) are provided on the connecting ring (53). The multiple groups of through holes (54) are distributed from top to bottom. Each group of through holes (54) has a plurality of through holes, and the plurality of through holes in the same group are circumferentially distributed around the axis of the connecting ring (53).

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