CN210814300U - Diversion type high-efficiency demister - Google Patents

Abstract

The utility model belongs to the technical field of gas-liquid separation equipment, specifically disclose a high-efficient demister of water conservancy diversion formula, including a jar body, synthetic gas entry, gas outlet and liquid outlet, jar is internal to be equipped with in proper order along synthetic gas flow direction and to remove the foam board and remove the foam silk screen, it has a plurality of through-holes to remove the vertical interval equipartition on the foam board, the through-hole is big end down's round platform form, it is adjacent to remove foam board bottom position between the through-hole the arc water conservancy diversion arch has set firmly at the position between the through-hole, the bellied bellying orientation of arc water conservancy diversion jar body bottom. The utility model discloses a remove the foam board and tentatively detach the slightly foam slightly in the synthetic gas, filter the small foam by silk screen defogging layer again, the cooperation is used, all has better removal to the foam of different volumes, and the gas of emission is clean purer, through removing the foam after, does not contain the foam in the air current basically.

Description

Diversion type high-efficiency demister

Technical Field

The utility model relates to a gas-liquid separation technical field, concretely relates to high-efficient demister of water conservancy diversion formula.

Background

In the mass and heat transfer production processes of rectification, absorption, desorption, humidification, dehumidification, heat exchange and the like in the chemical industry, the transmission of components between phases is promoted through the close contact and separation of gas (or steam) or liquid two phases, so that the aims of purifying liquid or gas and increasing (decreasing) humidity are fulfilled. In the above production process, the gas phase leaving the packing layer or plate tower of the tower device, such as bubble column, sieve plate tower, washing packed tower, absorption tower and rectification tower, will carry a certain amount of liquid drops or liquid foam with different sizes, and in most cases, the liquid carried in the gas must be removed, thereby avoiding adverse effect on the following working section or corrosion on the subsequent equipment. For example, in a methanol rectification column, a large amount of liquid is entrained in the secondary vapor, and although separation is performed in a separation chamber, a demister needs to be provided near the vapor outlet in order to prevent loss of methanol or contamination of the condensed liquid.

The existing defoaming device usually adopts a cyclone type demister, a baffle plate demister or a wire mesh demister to remove liquid foam and mist foam. However, most of the defoaming devices are single-layer defoaming devices, and the defoaming devices remove the entrainment in the gas by means of one-time defoaming process, so that the structure is single, and the defoaming efficiency is not high. Chinese patent No. CN201910342933.1 discloses a composite demister, which comprises a body containing a cavity, wherein a gas-liquid mixture containing solid particles enters from an inlet at the lower part of the cavity and passes through a blade type demister and a baffle plate demister upwards in sequence, the blade type demister comprises a plurality of blades which are arranged in parallel, and a defoaming channel is formed between the parallel blades; the single blade is formed by connecting vertical sections and bent sections in a staggered mode, and the connecting position of the upper portion of each bent section and the corresponding vertical section is located at the position 1/5-1/7 of the vertical section away from the bottom of the vertical section in height, so that a V-shaped structure with a downward opening is formed; the baffle plate demister comprises at least two groups of plate corrugated fillers which are stacked up and down. Because the gas-liquid mixture needs to pass through the blade type demister, the baffle plate demister and the plate corrugated filler, the path is tortuous, the single-stage pressure drop is obvious, the energy consumption of the system is increased, and the mist with small particle size which is difficult to separate can not be removed; secondly, the liquid drops attached to the surface of the baffle plate are very easy to be secondarily entrained by the gas behind, so that the defoaming efficiency is low.

Disclosure of Invention

To the not enough of above prior art, the utility model aims to provide a high-efficient demister of water conservancy diversion formula.

In order to achieve the above object, the present invention is specifically realized by the following techniques:

the utility model provides a high-efficient demister of water conservancy diversion formula, which comprises a tank body, lateral wall, top and the bottom of the jar body are equipped with synthetic gas entry, gas outlet and liquid outlet respectively, jar is internal to be equipped with in proper order along synthetic gas flow direction and to remove the foam silk screen, it has a plurality of through-holes to remove the longitudinal separation equipartition on the foam board, the through-hole is big end down's round platform form, it is adjacent to remove the foam board bottom position between the through-hole the arc water conservancy diversion arch has set firmly at the position between the through-hole, the bellied bellying orientation of arc water conservancy diversion jar body bottom.

Adopt above-mentioned technical scheme: the synthetic gas enters the tank body, upwards sequentially passes through the defoaming plate and the defoaming wire mesh, and the separated gas is output from the gas outlet at the top. When the synthesis gas with the mist enters the tank body and rises through the through hole of the defoaming plate at a certain speed, the mist collides with the wall of the through hole of the defoaming plate and is attached to the defoaming plate due to the inertia effect of the rising mist, the diffusion of the mist and the gravity settling of the mist on the defoaming plate enable the mist to form larger liquid drops to flow to the arc-shaped flow guide protrusion along the wall of the through hole, the liquid drops on the surface of the arc-shaped flow guide protrusion are larger and larger, and the liquid drops are separated from the arc-shaped flow guide protrusion and fall down until the gravity generated by the gathered liquid drops is larger than the resultant force of the lifting force of the synthesis gas and the surface tension of the liquid drops. The through holes of the circular truncated cone-shaped structures with the small upper parts and the large lower parts increase collision areas, improve the collision probability of synthesis gas, are favorable for accelerating the polymerization of mist at the through hole walls, the arc-shaped flow guide protrusions are favorable for converging liquid drops sliding from the through hole walls, a plurality of small liquid drops of adjacent through holes are polymerized into larger liquid drops, and then the larger liquid drops drop from the lower positions of the arc-shaped flow guide protrusions, so that the discharge of the liquid drops is accelerated, and the probability of secondary entrainment generated in the liquid flow process is greatly reduced.

The synthetic gas of slightly greater foam is tentatively detached through the defoaming board, gets into the defoaming silk screen, by the tiny foam of its filtering, consequently removes the defoaming board as thick defroster, removes the foam silk screen and as smart defroster, and the cooperation is used, all has better removal effect to the foam of different volumes, and the gas of emission is cleaner pure more, through removing the foam after, does not contain the foam in the air current basically.

Furthermore, the center of the through hole is provided with a flow disturbing column, the top end of the flow disturbing column extends to be connected with the bottom end of the defoaming screen mesh, and the bottom end of the flow disturbing column extends into the through hole.

Furthermore, the turbulence column is of a structure with a large upper part and a small lower part, and the diameter of the large-diameter end of the turbulence column is smaller than that of the small-diameter end of the through hole.

Adopt above-mentioned technical scheme: the turbulence columns are arranged in the airflow direction, so that the flow channel can be expanded in the process that the airflow rises and passes through the through hole, and the airflow is diffused to the periphery by taking the turbulence columns as the center, the probability of collision with the wall of the through hole is greatly increased, and the defoaming efficiency is increased; secondly, the air current that collides with the through-hole wall and turn back and the air current of diffusion can form secondary collision to form torrent and whirl, constantly contact between the synthetic gas that contains the entrainment, collide, lead to the entrainment polymerization grow, be favorable to getting rid of in the collision process with vortex post and defoaming board. Moreover, the turbulence columns are matched with the through holes, so that the airflow channel is gradually narrowed, the flow velocity is gradually increased, the pressure is increased, the airflow can be ensured to flow from bottom to top without causing large pressure drop, the problem of large gas pressure drop in the traditional defoaming method is solved, and the reduction of energy consumption is facilitated.

Furthermore, the turbulence column is in a drop shape and has a smooth transition streamline profile. Namely, the outer wall of the turbulence column is of a curved surface structure, and the outer wall of the turbulence column is in smooth transition, so that the flow resistance coefficient is small, the flowing stability of the gas is improved, the energy loss of the gas during flowing is reduced, the pressure loss of the gas is further reduced, and the energy consumption is reduced.

Further, a hydrophilic layer is arranged at the upper end of the flow disturbing column; the hydrophilic layer is stronger to the adsorption efficiency of mist, consequently removes liquid on the foam silk screen when being close to hydrophilic layer, more tends to gather to hydrophilic layer department to avoid a large amount of liquid gathers on removing the foam silk screen, do benefit to the breathing freely of removing the foam silk screen, the liquid foam jam probability of the foam silk screen that reduces as far as possible.

Furthermore, a hydrophobic layer is arranged at the lower end of the turbulence column; when the mist accumulated at the hydrophilic layer is gathered to a certain volume, the hydrophobic layer is beneficial to the liquid drops to slide off the turbulence column, and the removal of the liquid drops is accelerated.

Further, remove the foam silk screen cross-section and be the cockscomb structure, just remove the foam silk screen orientation the protruding portion of jar body bottom corresponds the top setting of turbulent flow post is convenient for remove foam silk screen liquid and flow to the hydrophilic layer fast.

Furthermore, the defoaming silk screen is a mixed-weaving silk screen, the mixed-weaving silk screen is formed by mixing and weaving a metal silk screen and a nonmetal silk screen, the nonmetal silk surface in the mixed-weaving silk screen is rough, has an adsorption function on small and tiny liquid foam in air flow, and is continuously gathered into larger liquid drops; the metal mesh can filter out larger liquid foam in the gaseous fluid, and can also increase the silk screen elasticity, plays support and setting effect to the silk screen, guarantees that the silk screen has sufficient tensile strength.

In order to facilitate the discharge of the liquid in the tank, further, the bottom of the tank is tapered from top to bottom.

Compared with the prior art, the utility model discloses an useful part lies in:

1. the utility model discloses a remove the foam board and tentatively detach the slightly foam slightly in the synthetic gas, filter the small foam by silk screen defogging layer again, consequently remove the foam board as thick defroster, remove the foam silk screen as smart defroster, the cooperation is used, all has better removal effect to the foam of different volumes, and the gas of emission is clean purer more, through removing the foam after, does not contain the foam in the air current basically.

2. The cone-shaped through holes on the defoaming plate increase the collision area, improve the collision probability of the synthesis gas, and are favorable for accelerating the polymerization of the spray on the wall of the through hole, and the arc-shaped flow guide protrusions are favorable for gathering the liquid drops falling from the wall of the through hole, so that the discharge of the liquid drops is accelerated, and the probability of secondary entrainment generated in the liquid flowing process is greatly reduced.

3. The turbulence columns are arranged in the airflow direction, so that the flow channel of the airflow can be expanded, the probability of collision with the through hole wall is greatly increased, and the defoaming efficiency is increased; and moreover, the turbulence columns are matched with the through holes, so that an airflow channel is gradually narrowed, the flow velocity is gradually increased, the pressure is increased, the airflow can be ensured to flow from bottom to top without causing large pressure drop, the problem of large gas pressure drop in the traditional defoaming method is solved, and the reduction of energy consumption is facilitated.

4. The flow resistance coefficient of the turbulence column with the water drop-shaped structure is small, the flowing stability of the gas is improved, the energy loss of the gas during flowing is reduced, and the pressure loss of the gas is further reduced, so that the energy consumption is reduced.

Drawings

Fig. 1 is a schematic structural view of a diversion-type high-efficiency demister according to embodiment 1 of the present invention;

fig. 2 is a schematic structural view of a diversion-type high-efficiency demister according to embodiment 2 of the present invention;

fig. 3 is a top view of a demister plate according to example 2 of the present invention;

fig. 4 is a bottom view of the defoaming plate according to example 2 of the present invention;

fig. 5 is a schematic structural view of a spoiler according to embodiment 2 of the present invention;

fig. 6 is a schematic structural view of a diversion-type high-efficiency demister according to embodiment 3 of the present invention;

in the figure, 1, a tank body; 2. a syngas inlet; 3. a gas outlet; 4. a liquid outlet; 5. a defoaming plate; 51. a through hole; 52. an arc-shaped flow guide bulge; 6. defoaming silk screen; 7. a turbulence column; 8. a hydrophilic layer; 9. a hydrophobic layer.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example 1

The utility model provides a water conservancy diversion formula high efficiency demister, refers to fig. 1, including a jar body 1, be equipped with synthetic gas entry 2 on the lateral wall of jar body 1, the top of jar body 1 is equipped with gas outlet 3, the bottom of jar body 1 is equipped with liquid outlet 4, it removes foam board 5 and removes foam silk screen 6 to be equipped with in proper order along the synthetic gas flow direction in jar body 1, remove foam silk screen 6 for the mixed-weave silk screen, the mixed-weave silk screen is woven by wire mesh and non-metallic silk screen, remove foam board 5 and remove foam silk screen 6 and can install on the inner wall of jar body 1 through the bolt, it has a plurality of through-holes 51 to vertically separate the equipartition on the foam board 5, promptly the axis of through-hole 51 is perpendicular remove foam board 5 and parallel with synthetic gas flow direction, through-hole 51 is big end down's round platform form, it is adjacent to remove foam board 5 bottom the position between through-hole 51 has the protruding water conservancy, the convex part of the arc-shaped flow guide bulge 52 faces the bottom of the tank body 1; in order to facilitate the discharge of the liquid in the tank 1, the bottom of the tank 1 is tapered from top to bottom.

Adopt above-mentioned technical scheme: synthetic gas gets into jar body 1 in, upwards loops through defoaming board 5 and defoaming silk screen 6, and defoaming board 5 is as thick defroster, gets rid of the slightly foam that is bigger in the synthetic gas, and defoaming silk screen 6 is as smart defroster, by the small foam of its filtering, and the cooperation is used, all has better removal effect to the foam of different volumes, and the gas cleanness of emission is pure, and the gas after the separation is exported by the gas outlet 3 at top. The through holes 51 with the truncated cone-shaped structures in the defoaming plate 5 improve the collision probability of the synthesis gas and the walls of the through holes 51, accelerate the polymerization of the mist on the walls of the through holes 51, and the arc-shaped flow guide protrusions 52 are favorable for gathering the liquid drops sliding off from the walls of the through holes 51, so that the discharge of the liquid drops is accelerated, and the probability of secondary entrainment generated in the upward flow process of the liquid is reduced.

Example 2

The embodiment 2 is substantially the same as the embodiment 1, with the difference that, referring to fig. 2 to 4, a turbulence column 7 is arranged in the center of the through hole 51, the turbulence column 7 is of a structure with a large top and a small bottom, the diameter of the large-diameter end of the turbulence column 7 is smaller than that of the small-diameter end of the through hole 51, the top end of the turbulence column 7 extends to be connected with the bottom end of the defoaming screen 6, and the bottom end of the turbulence column 7 extends into the through hole 51. In this embodiment, the turbulence column 7 is in a drop shape and has a smooth transition streamline profile; it will be appreciated by those skilled in the art that the turbulator 7 may alternatively be shaped as a cone.

Referring to fig. 5, a hydrophilic layer 8 is arranged at the upper end of the turbulence column 7, that is, the contact part between the turbulence column 7 and the defoaming screen 6 is hydrophilic, and a hydrophobic layer 9 is arranged at the lower end of the turbulence column 7; the hydrophilic layer 8 can be prepared from hydrophilic corrosion-resistant materials such as hydrophilic coating XZ-GT01 and polyvinyl alcohol PVA, and the hydrophobic layer 9 can be prepared from hydrophobic corrosion-resistant materials such as polytetrafluoroethylene and polyacrylonitrile.

Adopt above-mentioned technical scheme: the turbulence column 7 enables the flow channel of the air flow to diffuse to the periphery, so that the collision probability with the wall of the through hole 51 is greatly increased; moreover, the formation of turbulence and rotational flow between the wall of the through hole 51 and the turbulence column 7 is facilitated, so that the synthetic gas containing the entrainment is contacted with each other continuously, and the entrainment is polymerized to be larger, and the removal is facilitated in the collision process with the turbulence column 7 and the defoaming plate 5. Secondly, the turbulence columns 7 are matched with the through holes 51, so that an airflow channel is gradually narrowed, the flow speed is gradually increased, the pressure is increased, and the problem of large gas pressure drop in the traditional defoaming method is solved; the flow resistance coefficient of the turbulence column 7 with the water drop-shaped structure is small, so that the pressure loss of gas is further reduced, and the energy consumption is reduced. The setting of the hydrophilic layer 8 of turbulence column 7 for liquid on the defoaming silk screen 6 is more inclined to hydrophilic layer 8 gathering when being close to hydrophilic layer 8, and hydrophobic layer 9 then is favorable to the liquid drop from turbulence column 7 landing, accelerates getting rid of liquid drop, thereby avoids a large amount of liquid gathering on defoaming silk screen 6, does benefit to the breathing freely of defoaming silk screen 6, reduces the liquid foam jam probability that removes defoaming silk screen 6.

Example 3

The embodiment 3 is basically the same as the embodiment 2, except that, referring to fig. 6, the section of the defoaming screen 6 is zigzag, and the protrusion of the defoaming screen 6 towards the bottom of the tank body 1 is arranged corresponding to the top end of the turbulence column 7, so that the liquid of the defoaming screen 6 can rapidly flow to the hydrophilic layer 8.

Claims (9)

1. The utility model provides a high-efficient demister of water conservancy diversion formula, includes a jar body (1), lateral wall, top and the bottom of the jar body (1) are equipped with synthesis gas entry (2), gas outlet (3) and liquid outlet (4) respectively, a serial communication port, be equipped with in proper order along synthesis gas flow direction in the jar body (1) and remove foam board (5) and remove foam silk screen (6), it has a plurality of through-holes (51) to remove the vertical interval equipartition on foam board (5), big round platform form about through-hole (51) are big end to end, it is adjacent to remove foam board (5) bottom position between through-hole (51) arc water conservancy diversion arch (52) have set firmly, the bellying orientation of arc water conservancy diversion arch (52) jar body (1) bottom.

2. The diversion-type high-efficiency demister as claimed in claim 1, wherein a turbulence column (7) is arranged in the center of the through hole (51), the top end of the turbulence column (7) extends to be connected with the bottom end of the defoaming screen (6), and the bottom end of the turbulence column (7) extends into the through hole (51).

3. The flow-guiding type high-efficiency demister as set forth in claim 2, wherein the flow-disturbing column (7) is of a structure with a large top and a small bottom, and the diameter of the large-diameter end of the flow-disturbing column (7) is smaller than that of the small-diameter end of the through hole (51).

4. The flow-guiding efficient demister as set forth in claim 3, wherein the turbulence column (7) is in the form of water drops with a smooth transition streamline profile.

5. The diversion-type high-efficiency demister according to claim 2, wherein the upper end of the turbulence column (7) is provided with a hydrophilic layer (8).

6. The flow-guiding high-efficiency demister according to claim 2, wherein the lower end of the flow-disturbing column (7) is provided with a hydrophobic layer (9).

7. The diversion-type high-efficiency demister according to any one of claims 2-6, wherein the section of the defoaming screen (6) is zigzag, and the protrusion of the defoaming screen (6) towards the bottom of the tank body (1) is arranged corresponding to the top end of the turbulence column (7).

8. The diversion-type high-efficiency demister as set forth in any one of claims 1-6, wherein said defoaming screen (6) is a mixed-woven screen, and said mixed-woven screen is formed by mixing and weaving a metal screen and a non-metal screen.

9. The diversion-type high-efficiency demister as set forth in claim 1, wherein the bottom of the tank body (1) is tapered from top to bottom.

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