CN116173624A - A pipeline type gas defogging dehydrator - Google Patents

Abstract

The application discloses a pipeline type gas demisting dehydrator, which comprises a shell, wherein an attapulgite is arranged in the shell along the vertical direction, and demisting plate groups are arranged on two sides of the attapulgite; each demisting plate group comprises a plurality of demisting plates which are arranged at intervals along the vertical direction, each demisting plate comprises a first vertical plate, an inclined plate and a second vertical plate which are connected together along the vertical direction, wherein the first vertical plate is positioned on one side of the inclined plate facing the air inlet end, the inclined plate extends downwards along the direction from the air inlet end to the air outlet end in an inclined manner, the upper end of the inclined plate is connected to the lower end of the first vertical plate, and the lower end of the inclined plate is connected to the upper end of the second vertical plate; two adjacent demisting plates are partially overlapped; the concave-convex plate comprises a first web plate and a second web plate which are arranged at intervals and are staggered, the adjacent first web plate and second web plate are connected through an arm plate, and each arm plate is provided with an air passing hole. By using the method, the removal rate of mist in the gas can reach more than 94%.

Description

A pipeline type gas defogging dehydrator

technical field

The invention relates to a pipeline type gas defogging and dehydrating device.

Background technique

In order to remove the mist and liquid droplets carried in the gas, mist eliminators are generally used. In the prior art, different mist eliminators have been designed according to the composition of the mist carried in the gas, but these eliminators are vertical Mainly, the gas passes through the demister from bottom to top, and part of the liquid intercepted by the demister will enter the gas again and be brought into the next process, reducing the demister effect.

Contents of the invention

In order to solve the above problems, the present invention proposes a pipeline type gas demist dehydrator, which includes a shell extending along the direction of the first axis, and the two ends of the shell are respectively formed as an inlet end and an exhaust end; A concave-convex plate is arranged in the vertical direction, and a defogging plate group is respectively arranged at intervals on both sides of the concave-convex plate in the direction of the first axis, and a drain pipe is arranged on the lower side of the shell;

Each defogging plate group includes several defogging plates arranged at intervals in the vertical direction, and each defogging plate includes a first vertical plate, an inclined plate and a second vertical plate sequentially connected together in the vertical direction, In the direction of the first axis, the first vertical plate is located on the side of the inclined plate facing the intake end, and the second vertical plate is located on the side of the inclined plate facing the exhaust end; the inclined plate is inclined downward along the direction from the intake end to the exhaust end Extending, the upper end of the inclined plate is connected to the lower end of the first vertical plate, and the lower end of the inclined plate is connected to the upper end of the second vertical plate; viewed along the direction of the first axis, two adjacent defogging plates partially overlap;

The concave-convex plate includes first webs and second webs arranged at intervals along the second axis direction and staggered along the first axis direction, the first webs and the second webs are perpendicular to the first axis direction and along the Extending in the vertical direction, the adjacent first web and the second web are connected through an arm plate, and the arm plate is inclined relative to the first axis direction and extends along the vertical direction; the inclination of two adjacent arm plates The direction is opposite, each arm plate is provided with an air hole, and the central axis of the air hole is perpendicular to the extending direction of the arm plate; the first axis direction and the second axis direction both extend along the horizontal direction and are perpendicular to each other. In the present application, the cross section of the housing perpendicular to the direction of the first axis is preferably rectangular.

When the application is working, the gas containing mist enters the shell through the air inlet and flows upwards. When the gas passes through the defogging plate group, the concave-convex plate and the defogging plate group in sequence, the mist in the gas is absorbed On the surface of the defogging plate and the concave-convex plate, and gradually converge into droplets, when the weight of the droplets exceeds the buoyancy of the gas and the resultant force of surface tension, the droplets drop from the defogging plate and the concave-convex plate to the bottom of the housing, and discharged through the drain.

When the gas enters the gap between two adjacent defogging plates, the mist in the gas hits the lower surface of the defogging plate due to inertia, and at the same time, due to the obstruction of the inclined plate, the gas in the gap generates a vortex Flow, part of the mist can adhere to the upper surface of the demister plate. With the prolongation of time, the amount of liquid adsorbed on the demister plate gradually increases, and gathers into large droplets, which drip down. Since the gap between two adjacent defogging plates extends obliquely downward along the airflow direction, the airflow in the gap has a downward component force, which is more conducive to the downward dripping of liquid droplets.

When the air flow passes through the first defogging plate group, the gas continues to flow in the direction of the concave-convex plate, and when the gas that has been removed part of the mist passes through the air holes on the concave-convex plate, because the arm plate is connected to the direction of the first axis It is installed obliquely, and the central axis of the air hole is perpendicular to the extension direction of the arm plate, so that the gas needs to be bent to pass through the concave-convex plate, which can effectively increase the collision probability between the mist and the concave-convex plate, and improve the mist removal rate After passing through the concave-convex plate, the gas continues to pass through another defogging plate group, so that the mist in the gas is basically completely removed. With this application, when the airflow velocity is 2.5-5m/s, the mist removal rate in the gas can reach more than 94%.

Specifically, in order to prevent the airflow from directly passing through the concave-convex plate and reduce the dehydration rate, no air holes are provided on the first web and the second web. That is, no holes are opened on the first web and the second web.

Specifically, the angle between the inclined plate and the horizontal plane is 40-50°. Under this design, the airflow can form a strong vortex flow between two adjacent defogging plates, which can effectively increase the collision rate of the mist carried in the airflow and the defogging plate, so that more mist particles can stick to each other. Attached to the defogging plate to improve dehydration efficiency. In addition, the air flow generates approximately the same component force in the vertical direction and the horizontal direction, so as to avoid the excessive flow resistance of the gas, which will cause the power cost of transporting the gas to be too high.

Specifically, the angle between the first web and the arm plate is 98-105°. This design enables the mist in the airflow to collide with the first web and the second web, and flow down to the bottom of the casing along the first web and the second web.

Further, the inclined plate is connected to the second vertical plate through a bent portion, and the bent portion includes a straight plate section and an inclined plate section connected together, wherein the straight plate section extends vertically downward from the lower end of the inclined plate, and the inclined plate section The plate section is extended from the lower end of the straight plate section toward the exhaust end, and extends obliquely downward. The lower end of the inclined plate section is connected to the upper end of the second vertical plate, and a liquid outlet is opened on the straight plate section; A dehydration plate is arranged on the upper side, and the dehydration plate extends from the lower end of the inclined plate towards the exhaust end and extends downwards obliquely, forming a liquid collection area between the dehydration plate and the bending part. When the liquid droplets bonded to the lower surface of the defogging plate reach the straight plate section of the bending part, they can enter the liquid collection area through the liquid outlet hole under the push of inertia. The reduced gas flow rate to the liquid collection area reduces the entrainment effect on the droplets, making it easier for the droplets to drip downward and coalesce into larger droplets that eventually fall to the bottom of the enclosure. With this design, when the airflow velocity is 2.5-5m/s, the mist removal rate in the gas can reach more than 99.6%.

Further, the angle between the dewatering plate and the horizontal plane is smaller than the angle between the inclined plate and the horizontal plane, and dewatering holes are opened on the dewatering plate. Specifically, the angle between the dewatering plate and the horizontal plane is 20-30° smaller than the angle between the inclined plate and the horizontal plane.

When the liquid droplets bonded to the surface of the demister plate reach the dehydration plate, they can enter the liquid collection area through the dehydration hole under the inertial force and collect them. The lower wind speed in the liquid collection area is more conducive to the liquid droplets. of settlement.

Further, in order to reduce the resistance of gas flow, in the direction of the first axis, the first length of the bent portion is 20-30% of the second length of the defogging plate.

Further, in order to ensure that a gap extending downward along the inclined direction is formed between two adjacent defogging plates, so as to ensure that the mist in the gas can hit the defogging plates to the greatest extent, and when viewed along the first axis, the corresponding Among the two adjacent defogging plates, the lower end of the second vertical plate of the upper defogging plate downwardly exceeds the lower end of the first vertical plate of the lower defogging plate.

Further, in the direction of the first axis, the clear distance between the concave-convex plate and the defogging plate set is 3.5-6 times the thickness of the defogging plate set. This design can fully mix the airflow passing through the defogging plate group, make the mist in it uniform, and help to improve the collection efficiency of the concave-convex plate to the mist.

Description of drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a view from A-A direction in Fig. 1 .

Fig. 3 is an enlarged view of part B in Fig. 1 .

Fig. 4 is an enlarged view of part C in Fig. 2 .

Fig. 5 is a schematic structural diagram of another embodiment of the present invention.

FIG. 6 is an enlarged view of part D in FIG. 5 .

Fig. 7 is an enlarged view of a second defogging plate.

Detailed ways

In the drawings, the direction of the first axis X represents the first axis direction, the direction of the second axis Y represents the direction of the second axis, the direction of the third axis Z represents the vertical direction, and the direction of the first axis and the direction of the second axis are both Extend horizontally and are perpendicular to each other.

Example 1

Please refer to Fig. 1-Fig. 4, the first pipeline type gas demister dehydrator, which includes a shell 10 extending along the first axis direction, the shell 10 includes a cylinder 11 extending along the first axis direction, the cylinder 11 The cross-section perpendicular to the first axis direction is rectangular, and the first conical tube 12 and the second conical tube 13 are respectively installed at the two ends of the cylinder body 11 in the first axis direction, and the first conical tube 12 and the second conical tube 13 The small ends of all extend along the first axial direction and toward the direction away from the barrel. An air inlet 14 is installed on the small end of the first conical tube 12. The inner chamber of the air inlet is formed as an air inlet 141. In the second The small end of the tapered pipe 13 is equipped with an exhaust end 15 , and the inner cavity of the exhaust end is formed as an exhaust port 151 . That is, both ends of the housing are formed as an intake end and an exhaust end, respectively.

A concave-convex plate 30 is arranged vertically inside the cylinder 11, and a first defogging plate group is arranged at intervals on both sides of the concave-convex plate in the first axis direction. The two first defogging plate groups are respectively called It is the first defogging plate group A201 and the first defogging plate group B202, wherein the first defogging plate group A201 is located on the side of the concave-convex plate 30 facing the intake end 14, and the first defogging plate group B202 is located on the side of the concave-convex plate 30 facing One side of the exhaust port 15.

A drainpipe 16 is arranged on the lower side of the cylinder. The drainpipe 16 is located between the first defogging plate group A201 and the concave-convex plate 30 in the direction of the first axis, and a drain valve 17 is installed on the drainpipe 16 . The drain is intended to be connected to the waste water collection pipe.

The structure of the first defogging plate group A201 is the same as that of the first defogging plate group B202, and the specific structure of the first defogging plate group will be described below by taking the first defogging plate group A201 as an example.

The first defogging plate group A201 includes several first defogging plates 21 arranged at intervals in the vertical direction, and each first defogging plate 21 includes first vertical plates A22 connected together in sequence along the vertical direction, inclined plate A23 and second riser A24,

In the direction of the first axis, the first vertical plate A22 is located on the side of the inclined plate A23 facing the intake end 14 , and the second vertical plate A24 is located on the side of the inclined plate A23 facing the exhaust end 15 . The inclined plate A23 extends obliquely downward along the direction from the intake end to the exhaust end. The upper end of the inclined plate A is connected to the lower end of the first vertical plate A, and the lower end of the inclined plate A is connected to the upper end of the second vertical plate A. In this embodiment, the first included angle α between the inclined plate A23 and the horizontal plane is 45°. It can be understood that, in other embodiments, the first included angle α may also be 40°, 42°, 46°, 48° or 50°, or other angles between 40° and 50°.

Viewed along the direction of the first axis, two adjacent first defogging plates partially overlap. Specifically, in this embodiment, viewed along the direction of the first axis, among the two adjacent first defogging plates, the lower end of the second vertical plate A of the first defogging plate located on the upper side goes downwards beyond that of the one located on the lower side. The lower end of the first vertical plate A of the first defogging plate.

The concave-convex plate 30 includes a first web 31 and a second web 32 arranged at intervals along the second axis direction and staggered along the first axis direction. The first web 31 is located on one side of the second web 32 toward the exhaust end. Side, the first web 31 and the second web 32 are perpendicular to the first axis direction and extend along the vertical direction, the adjacent first web and the second web are connected through an arm plate 33, the arm plate It is arranged obliquely with respect to the first axis direction and extends along the vertical direction. The inclination directions of two adjacent arm plates are opposite, and each arm plate is provided with a through hole 331 , and the central axis of the air hole is perpendicular to the extending direction of the arm plate. A first groove 311 extending vertically is formed between each first web 31 and two adjacent arm plates, and a groove 311 extending along the vertical direction is formed between each second web 32 and two adjacent arm plates. The second groove 321 extending vertically.

In this embodiment, the second included angle β between the first web 31 and the arm plate 33 is 101°. It can be understood that in other embodiments, the second included angle β may also be 98°, 100°, 102° or 105°, or other angles between 98° and 105°. Neither the first web nor the second web is provided with any hole including air holes.

In this embodiment, in the direction of the first axis, the clear distance L between the concave-convex plate 30 and the first defogging plate group A201 is 4 times the thickness H of the first defogging plate group A201, and the distance L between the concave-convex plate 30 and the first defogging plate group A201 The clear distance between the fog plate groups B202 is also 4 times the thickness of the first defogging plate group B202.

When this embodiment is in operation, the gas containing mist enters the housing 10 through the air inlet 141, and when the gas passes through the first defogging plate group A, the concave-convex plate and the first defogging plate group B in sequence, the gas in the gas The mist is adsorbed on the surface of the first defogging plate and the concave-convex plate, and gradually converges into droplets. The plate drips to the bottom of the enclosure and exits through the drain.

When the gas enters the gap 211 between two adjacent first defogging plates of the first defogging plate group A201, the mist in the gas hits the lower surface of the first defogging plate due to inertia, At the same time, due to the hindrance of the inclined plate A, the gas in the gap 211 generates a vortex flow, and part of the mist in the gas can adhere to the upper surface of the first defogging plate. As time goes on, the liquid adsorbed on the first demister plate gradually increases, and gathers into large liquid droplets, which drop down. Since the gap between two adjacent first defogging plates extends obliquely downward along the airflow direction, the airflow in the gap has a downward component force, making it easier for liquid droplets to drop downward.

When the part of the mist-removed gas passes through the air hole on the concave-convex plate, because the central axis of the air hole is perpendicular to the extension direction of the arm plate, the gas needs to turn to pass through the concave-convex plate, which can effectively improve the mist flow. The probability of collision with the concave-convex plate improves the mist removal rate. After passing through the concave-convex plate, the gas continues to pass through the first defogging plate group B202. Using this embodiment, when the airflow velocity is 3.4-3.8m/s, the mist removal rate in the gas can reach more than 94%.

Example 2

Please refer to FIG. 5-FIG. 7, this embodiment is an improvement on the basis of Embodiment 1. In FIG. 5-FIG. 7, the same symbols as in FIG. 1-4 represent the same structural components.

The second pipeline type gas defogging and dehydrating device, which includes a casing 10 extending along the first axis direction, the casing in this embodiment is the same as that in Embodiment 1, and is arranged vertically in the cylinder body 11 of the casing 10 There is a concave-convex plate 30, and a second defogging plate group is arranged at intervals on both sides of the concave-convex plate in the direction of the first axis, and the two second defogging plate groups are respectively called the second defogging plate group A401 and the second defogging plate group The defogging plate group B402 , wherein the second defogging plate group A401 is located on the side of the concave-convex plate 30 facing the intake end 14 , and the second defogging plate group B402 is located on the side of the concave-convex plate 30 facing the exhaust end 15 .

The concave-convex plate in this embodiment has the same structure as the concave-convex plate in Embodiment 1. In this embodiment, the structure of the second defogging plate group A401 is the same as that of the second defogging plate group B402. The specific structure of the second defogging plate group will be described below by taking the second defogging plate group A401 as an example.

The second defogging plate group A401 includes several second defogging plates 41 arranged at intervals in the vertical direction, and each second defogging plate 41 includes a first vertical plate B42 sequentially connected together in the vertical direction, an inclined The board B43, the bent portion 45, and the second vertical board B44.

In the direction of the first axis, the first vertical plate B42 is located on the side of the inclined plate B43 facing the intake end, the bent portion 45 is located on the side of the inclined plate B43 facing the exhaust end, and the second vertical plate B44 is located on the side of the inclined plate B45 facing the exhaust end. side of the gas end. The inclined plate B43 extends obliquely downward along the direction from the intake end to the exhaust end. The upper end of the inclined plate B is connected to the lower end of the first vertical plate B, and the lower end of the inclined plate B is connected to the upper end of the bending part 45. The bending part The lower end of is connected to the upper end of the second riser B. That is, the inclined plate is connected to the second vertical plate through a bent portion.

The bending portion 45 includes a straight plate section 451 and a slanted plate section 452 connected together, wherein the straight plate section 451 is formed by extending downwards in the vertical direction from the lower end of the inclined plate B43, and the slanted plate section 452 is formed by extending downward from the lower end of the straight plate section 451. The direction of the exhaust end extends obliquely downwards, the lower end of the sloping plate section 452 is connected to the upper end of the second vertical plate B44 , and a liquid outlet hole 453 is opened on the straight plate section 451 .

In this embodiment, the third included angle γ between the inclined plate B43 and the horizontal plane is 45°. It can be understood that, in other embodiments, the third included angle γ may also be 40°, 42°, 46°, 48° or 50°, or other angles between 40° and 50°.

Viewed along the direction of the first axis, two adjacent second defogging plates partially overlap. Specifically, in this embodiment, viewed along the direction of the first axis, among the two adjacent second defogging plates, the lower end of the second vertical plate B of the second defogging plate on the upper side goes downwards beyond the second vertical plate B on the lower side. The lower end of the first vertical plate B of the second defogging plate.

In this embodiment, a dehydration plate 431 is provided on the upper side of each bending portion 45, and the dehydration plate extends from the lower end of the inclined plate B43 toward the exhaust end and extends obliquely downward. There are dehydration holes 432, and a liquid collection area 433 is formed between the dehydration plate and the bent portion.

The fourth included angle θ between the dehydration plate and the horizontal plane is smaller than the third included angle γ between the inclined plate B and the horizontal plane. Specifically, in this embodiment, the fourth included angle θ is 20°, that is, the fourth included angle θ is less than The third included angle is γ25°. It can be understood that, in other embodiments, the fourth angle θ may be smaller than the third angle γ by 20°, 22°, 27° or 30°, or other angles between 20° and 30°.

In this embodiment, in the direction of the first axis, the first length S of the bent portion 45 is 26% of the second length W of the second defogging plate. The content not specifically described in this embodiment can be carried out with reference to Embodiment 1.

Due to the addition of the bending part and the dehydration plate in this embodiment, when the gas entering the two adjacent second demister plates reaches the straight plate section 451, due to inertia, the gas that is bonded to the lower surface of the second demister plate The droplets will enter the liquid collection area 433 through the liquid outlet hole 453, and the droplets bonded to the upper surface of the second demister plate will enter the liquid collection area 433 through the dehydration hole 432. Due to the flow area of the liquid collection area Enlarged, the flow rate of gas entering the liquid collection area decreases, reducing the entrainment effect on the droplets, making it easier for the droplets to drip downward and collect into larger droplets, and finally drop to the bottom of the housing. Using this embodiment, when the airflow velocity is 3.4-3.8m/s, the mist removal rate in the gas can reach more than 99.6%.

Claims (10)

1. The utility model provides a pipeline type gas defogging dehydrator which is characterized in that the device comprises a shell extending along a first axis direction, and two ends of the shell are respectively formed into an air inlet end and an air outlet end; a concave-convex plate is arranged in the shell along the vertical direction, two sides of the concave-convex plate in the first axis direction are respectively provided with a demisting plate group at intervals, and the lower side of the shell is provided with a drain pipe;

each demisting plate group comprises a plurality of demisting plates which are arranged at intervals along the vertical direction, each demisting plate comprises a first vertical plate, an inclined plate and a second vertical plate which are sequentially connected together along the vertical direction, the first vertical plate is positioned at one side of the inclined plate, which faces the air inlet end, in the first axial direction, and the second vertical plate is positioned at one side of the inclined plate, which faces the air outlet end; the inclined plate extends downwards in an inclined manner along the direction from the air inlet end to the air outlet end, the upper end of the inclined plate is connected to the lower end of the first vertical plate, and the lower end of the inclined plate is connected to the upper end of the second vertical plate; viewed along the first axis direction, two adjacent demisting plates are partially overlapped;

the concave-convex plate comprises a first web plate and a second web plate which are arranged at intervals along a second axis direction and are staggered along the first axis direction, wherein the first web plate and the second web plate are perpendicular to the first axis direction and extend along the vertical direction, the adjacent first web plate and second web plate are connected through an arm plate, and the arm plate is obliquely arranged relative to the first axis direction and extends along the vertical direction; the inclination directions of two adjacent arm plates are opposite, each arm plate is provided with an air passing hole, and the central axis of the air passing hole is perpendicular to the extending direction of the arm plate; the first axis direction and the second axis direction extend along the horizontal direction and are mutually perpendicular.

2. A ducted gas mist eliminator as recited in claim 1, wherein no gas passing holes are provided in both the first web and the second web.

3. A ducted gas mist eliminator as claimed in claim 1, characterized in that the inclined plate is inclined at an angle of 40-50 ° to the horizontal.

4. A ducted gas mist eliminator as claimed in claim 1, wherein the angle between the first web and the arm plate is 98-105 °.

5. The ducted type gas demister dehydrator according to claim 1, wherein the inclined plate is connected to the second vertical plate through a bending part, the bending part includes a straight plate section and an inclined plate section connected together, wherein the straight plate section extends downward in a vertical direction from a lower end of the inclined plate section, the inclined plate section extends downward in a direction from a lower end of the straight plate section toward an exhaust end, the lower end of the inclined plate section is connected to an upper end of the second vertical plate, and a liquid outlet hole is opened in the straight plate section; a dewatering plate is arranged on the upper side of each bending part, the dewatering plate extends downwards from the lower end of the inclined plate towards the direction of the exhaust end in an inclined mode, and a liquid collecting area is formed between the dewatering plate and the bending part.

6. A ducted gas demister according to claim 5, wherein the angle between the dewatering plate and the horizontal plane is smaller than the angle between the inclined plate and the horizontal plane, and dewatering holes are provided in the dewatering plate.

7. A ducted gas mist eliminator as claimed in claim 6, characterized in that the angle between the dewatering plate and the horizontal plane is 20-30 ° smaller than the angle between the inclined plate and the horizontal plane.

8. A ducted gas mist eliminator as defined in claim 5, wherein in the first axial direction, the first length of the fold is 20-30% of the second length of the mist eliminator plate.

9. A ducted gas demister dehydrator according to claim 1, wherein the lower end of the second riser of the upper demister plate exceeds the lower end of the first riser of the lower demister plate downwardly, as viewed in the first axial direction, of the two adjacent demister plates.

10. A ducted gas demister as defined in claim 1, wherein the clear distance between the concave-convex plate and the demister plate group in the first axis direction is 3.5-6 times the thickness of the demister plate group.

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