CN217526707U - Pneumatic high-efficiency defoaming device for evaporation separation equipment - Google Patents

Abstract

The utility model discloses a pneumatic high-efficient defoaming device for evaporation separation equipment relates to water treatment technical field, including the separator casing, the feed liquid export has been seted up to the bottom of separator casing, and the secondary steam export has been seted up at the top of separator casing, and the feed liquid import has been seted up to the lateral wall of separator casing, and inside from the bottom up of separator casing has set gradually pneumatic defoaming device and silk screen defoaming device, is provided with seal structure in the separator casing, and seal structure divides the separator casing into upper and lower two parts, and pneumatic defoaming device passes seal structure. The utility model discloses a pneumatic defoaming device and the silk screen defoaming device at pneumatic defoaming device top of setting in the separator casing remove the foam device, come to carry out stage treatment to the steam of secondary in the separator casing, and pneumatic defoaming device carries out crude processing to steam of secondary, and the silk screen defoaming device carries out the fine processing to steam of secondary to prevent that the silk screen from removing the foam device and blockking up the scale deposit and influence evaporating system's steady operation.

Description

Pneumatic high-efficiency defoaming device for evaporation separation equipment

Technical Field

The utility model relates to a water treatment technical field, concretely relates to gas-liquid separation device, especially a pneumatic high-efficient defoaming device is used to evaporation and separation equipment.

Background

In the process of evaporative crystallization, a large amount of mist-drop-shaped foam is easily entrained in secondary steam generated by the wastewater; if the treatment is improper, (1) the impurity content in the secondary steam condensate water is high, secondary treatment is needed, and the treatment cost is increased; (2) The material foam is easy to cause scaling and blockage of the device, and can seriously cause the system to be incapable of normally operating; (3) If the evaporation system adopts a mechanical vapor compression technology, secondary vapor containing a large amount of foam can also cause the impeller and the shell of the compressor to corrode, and great loss is caused. Therefore, how to remove the entrainment problem of the material in the secondary steam with high efficiency becomes a problem which is not negligible when the evaporation crystallization separation equipment is designed.

At present, most evaporation plants design a defoaming device at the top of a crystallization separator for separating fog drops in secondary steam, and most defoaming devices adopt a wire mesh defoaming device or a baffle type demister. The silk screen demister has better effect to getting rid of droplet, especially is better to the droplet interception effect of small particle diameter, but the actual motion in-process, it is great because of secondary steam carries the droplet volume, and the droplet forms the crystallization easily at the internal gap of silk screen demister, leads to demister jam, scale deposit, and the secondary steam velocity of flow is more and more high, and droplet interception efficiency is more and more low, and the operating pressure drop is more and more high, finally causes the unable continuous, steady operation of system. The baffle type demister makes fog drops impact on the surface of the baffle plate by using the inertia effect so as to be intercepted, so that the baffle plate only has an effect on intercepting large-particle fog drops, the effect on intercepting small-particle-size fog drops is very small, and the separation efficiency is low.

The existing defoaming device is easy to scale and then cause blockage, so that an evaporative crystallization system cannot continuously and stably run.

SUMMERY OF THE UTILITY MODEL

Therefore, the embodiment of the utility model provides an evaporation and separation equipment is with pneumatic high-efficient defoaming device to solve the problem that separator removes the foam inefficiency, removes the easy scale deposit of foam device, jam.

In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:

the utility model provides an evaporation separation is pneumatic high-efficient foam removing device for equipment, includes the separator casing, the feed liquid export has been seted up to the bottom of separator casing, the secondary steam export has been seted up at the top of separator casing, the feed liquid import has been seted up to the lateral wall of separator casing, the inside from the bottom up of separator casing has set gradually pneumatic foam removing device and silk screen foam removing device, be provided with seal structure in the separator casing, seal structure handle the separator casing divides into upper and lower two parts, just pneumatic foam removing device passes seal structure.

Optionally, the sealing structure includes an upper sealing plate and a lower sealing plate, the upper sealing plate is parallel to the lower sealing plate, the outer sides of the upper sealing plate and the lower sealing plate are fixedly connected to the separator housing, and the upper and lower sides of the pneumatic defoaming device are respectively fixedly connected to the upper sides of the upper sealing plate and the lower sealing plate.

Optionally, the pneumatic defoaming device is composed of a plurality of pneumatic defoaming units, and the plurality of pneumatic defoaming units are arranged in a triangular shape or a square shape.

Optionally, the pneumatic defoaming unit comprises an outer cylinder, a central cylinder, a first-stage guide vane and a second-stage guide vane, the top of the outer cylinder is fixedly connected to the inner side of the upper sealing plate, the bottom of the outer cylinder is fixedly connected to the inner side of the lower sealing plate, the central cylinder is fixedly connected to the inner part of the outer cylinder, the axis of the central cylinder coincides with the axis of the outer cylinder, the second-stage guide vane and the first-stage guide vane are respectively and fixedly connected to the upper end and the lower end of the central cylinder, a plurality of guide grooves are fixedly connected to the inner side wall of the outer cylinder, and the guide grooves penetrate through gaps between the first-stage guide vane and the second-stage guide vane.

Optionally, the first-stage guide vane and the second-stage guide vane are both composed of a plurality of vanes, an included angle between the second-stage guide vane and a horizontal plane is smaller than an included angle between the first-stage guide vane and the horizontal plane, and the first-stage guide vane and the second-stage guide vane are all distributed in a circumferential array by taking the axis of the central cylinder as the center.

Optionally, the blade is planar or curved.

Optionally, the bottom of the wire mesh demister is fixed to the inner wall of the separator housing through a support structure.

Optionally, a flushing device is arranged above the wire mesh defoaming device.

Optionally, the flushing device consists of a spraying pipe network and a high-efficiency nozzle or a plurality of single-fluid spray guns.

The utility model discloses following beneficial effect has at least:

through setting up pneumatic demister and silk screen demister in the separator casing, after secondary steam passes through the feed liquid import and gets into in the separator casing, the inside seal structure that seals through the seal structure that seals of separator casing, make secondary steam can only get into the pneumatic demister in the seal structure, filter the big particle diameter liquid drop in the secondary steam through pneumatic demister, because of it is relatively poor to the liquid drop filter effect of small particle diameter, make the liquid drop of small particle diameter pass on getting into silk screen demister behind the pneumatic demister, intercept the filtration to small particle diameter liquid drop through silk screen demister, carry out stage treatment to the liquid drop of different particle diameters, thereby can be difficult to cause the jam, guarantee device can last stable operation.

Drawings

In order to clearly illustrate the prior art and the present invention, the drawings used in the description of the prior art and the embodiments of the present invention are briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other drawings may be derived from the provided drawings by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions that the present invention can be implemented, and any modification of the structure, change of the ratio relation or adjustment of the size should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the efficacy that the present invention can produce and the purpose that can be achieved.

Fig. 1 is a schematic diagram of the internal structure of the embodiment of the present invention;

fig. 2 is a schematic view of the internal structure of the outer cylinder body according to the embodiment of the present invention;

FIG. 3 is a top view of a pneumatic defoaming unit according to an embodiment of the present invention;

FIG. 4 is a schematic view of the regular triangle arrangement structure of the pneumatic defoaming unit of the present invention;

FIG. 5 is a schematic diagram of the square arrangement structure of the pneumatic defoaming unit of the present invention;

FIG. 6 is a schematic view of the structure of the center tube of the present invention;

FIG. 7 is a schematic view of the overall structure of the pneumatic defoaming unit of the present invention;

description of reference numerals:

1. a separator housing; 2. a feed liquid outlet; 3. a feed liquid inlet; 4. a secondary steam outlet; 5. a sealing structure; 51. an upper sealing plate; 52. a lower sealing plate; 6. a pneumatic defoaming device; 61. a pneumatic defoaming unit; 611. an outer cylinder; 612. a central barrel; 613. a first stage guide vane; 614. a second stage guide vane; 615. a diversion trench; 7. a wire mesh defoaming device; 8. a blade; 9. a support structure; 10. and (5) flushing the device.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.

In the description of the present invention, "a plurality" means two or more unless otherwise specified. For a scheme with a time sequence flow, the term expression does not need to be understood as describing a specific sequence or a sequence order, and for a scheme of a device structure, the term expression does not have distinction of importance degree, position relation and the like.

Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements specifically listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus or added steps as would occur to one or more of the following upon examination of the following or based on the teaching of this invention.

As shown in fig. 1 and 2, a pneumatic high-efficiency defoaming device for evaporation separation equipment comprises a separator shell 1, wherein a material liquid outlet 2 is formed in the bottom of the separator shell 1, a secondary steam outlet 4 is formed in the top of the separator shell 1 and used for discharging treated secondary steam, a material liquid inlet 3 is formed in the side wall of the separator shell 1, high-salinity wastewater enters the separator shell 1 through the material liquid inlet 3 and is subjected to flash evaporation in a negative-pressure operation environment, and partial moisture in the material liquid is evaporated to form secondary steam; the unevaporated feed liquid enters an external circulation heating system through a feed liquid outlet 2, is heated and then enters a separator shell 1 through a feed liquid inlet 3, so that a circulation evaporation process is formed; the separator comprises a separator shell 1, wherein a pneumatic defoaming device 6 and a silk screen defoaming device 7 are sequentially arranged in the separator shell 1 from bottom to top, secondary steam carries a large amount of fog-drop-shaped object foam and sequentially passes through the pneumatic defoaming device 6, the silk screen defoaming device 7 and a secondary steam outlet 4 upwards to enter a next effect or a compressor, a sealing structure 5 is arranged in the separator shell 1, the sealing structure 5 divides the inside of the separator shell 1 into an upper part and a lower part, the pneumatic defoaming device 6 penetrates through the sealing structure 5, a closed cavity is formed between the sealing structure 5 and the separator shell 1 and between the sealing structure 5 and the pneumatic defoaming device 6, so that the secondary steam can only move upwards through the pneumatic defoaming device 6, most of object foam liquid drops can be removed by the secondary steam under the action of pneumatic force, untreated secondary steam entering from a feed liquid inlet 3 can only enter the pneumatic defoaming device 6, the pneumatic defoaming device 6 is used for blocking liquid drops with large particle diameters, the pneumatic defoaming device 6 is not easy to block, and most of small liquid drops are difficult to pass through the pneumatic defoaming device 6.

After passing through the pneumatic defoaming device 6, when secondary steam carrying small-particle-size liquid drops passes through the screen defoaming device 7, the secondary steam can pass through the screen to continuously move forwards under the action of inertia force, the liquid drops can impact the screen in the moving process and form a liquid film on the surface of the screen and then settle to the bottom of the screen defoaming device 7 by virtue of gravity, when the accumulated liquid drops reach a certain quantity, the small liquid drops are converged into large liquid drops, and when the liquid drops reach a certain size, the liquid drops can fall off from the filaments under the action of gravity, so that the interception of the small liquid drops is finished, the screen defoaming device 7 is woven by using filaments, has high compactness, and when the small-particle-size liquid drops pass through the screen defoaming device 7, the liquid films or the liquid drops can be formed on the surface of the filaments, after the liquid film or the liquid drops reach a certain size, the liquid drops flow to the intersection points of the filaments along the filaments under the action of gravity, the filaments have the wettability, the liquid drops are gradually increased under the action of the surface tension of the liquid, when the liquid drops are accumulated to the condition that the gravity is greater than the surface tension, the liquid drops fall off from the filaments, so that the interception of small liquid drops in secondary steam is realized, the foam liquid drops are basically intercepted after the secondary steam passes through the pneumatic defoaming device 6 and the silk screen defoaming device 7, so that impurities in the secondary steam are removed, clean condensed water is obtained, the corrosion and scaling risks to subsequent equipment are reduced, the blockage is not easily caused, and the continuous and stable operation of the device is further ensured, wherein the large liquid drops refer to liquid drops larger than 15 microns, and the small liquid drops refer to liquid drops smaller than 15 microns.

As shown in fig. 1 and 2, the sealing structure 5 includes an upper sealing plate 51 and a lower sealing plate 52 which are arranged in parallel, the outer sides of the upper sealing plate 51 and the lower sealing plate 52 are welded with the shell of the separator, the sealing performance between the upper sealing plate 51 and the lower sealing plate 52 and the separator shell 1 can be ensured, untreated secondary steam is prevented from directly entering the wire mesh defoaming device 7 above without passing through the pneumatic defoaming device 6 to cause blockage, the inner side of the upper sealing plate 51 is welded and fixed on the top of the pneumatic defoaming device 6, the inner side of the lower sealing plate 52 is welded on the bottom of the pneumatic defoaming device 6, the upper sealing plate 51 and the lower sealing plate 52 are arranged in parallel with the horizontal plane between the separator shell 1 and the pneumatic defoaming device 6 to form a closed cavity, so that the secondary steam can only move upwards through the pneumatic defoaming device 6, wherein, the upper sealing plate 51 and the lower sealing plate 52 are arranged in parallel with the horizontal plane, the construction and installation are convenient, the separator is applicable to a small diameter, and the upper sealing plate 51 and the lower sealing plate 52 can also be arranged in a certain inclined manner with the horizontal plane, when the upper sealing plate 51 and the lower sealing plate 52 and the upper sealing plate 52 are arranged in parallel, the horizontal plane, thereby further reducing the risk of blocking the inflow of the secondary steam droplets flowing into the upper mist separation space, and the formation of the upper mist, and the lower mist separation device, and the lower mist, and the formation of the condensate water is further reducing the formation of the condensate water.

As shown in fig. 1 and 2, the pneumatic defoaming device 6 is composed of a plurality of pneumatic defoaming units 61, the pneumatic defoaming units 61 are standard cylinders with smaller diameters, so that large-scale processing and manufacturing in batches can be realized, the processing time of equipment is reduced, and the cost is reduced, as shown in fig. 4 and 5, the pneumatic defoaming units 61 can be arranged in a regular triangle or a square, according to the volume flow rate of secondary steam and the process requirements, any combination of the defoaming units can be performed according to the actual situation, the number of the pneumatic defoaming units 61 can also be 1, the number of the pneumatic defoaming units 61 is selected according to the size of the separator shell 1, when the number of the pneumatic defoaming units 61 is large, the arrangement in a triangle is preferably adopted, when the number of the pneumatic defoaming units 61 is small, the arrangement in a square is preferably adopted, in the embodiment, 7 pneumatic defoaming units 61 are adopted, and 7 pneumatic defoaming units 61 are arranged in a regular triangle.

As shown in fig. 1 and 2, the pneumatic defoaming unit 61 includes an outer cylinder 611, a central cylinder 612, a first-stage guide vane 613 and a second-stage guide vane 614, according to the requirement of the foam intercepting efficiency of the process, one-stage or multi-stage guide vanes can be adopted, in this embodiment, two-stage guide vanes are adopted, wherein the top of the outer cylinder 611 is fixedly connected to the inner side of the upper sealing plate 51, the bottom of the outer cylinder 611 is fixed to the inner side of the lower sealing plate 52, the outer cylinder 611 is of a straight cylinder structure, the diameter of the outer cylinder 611 is 200mm to 600mm, the height of the outer cylinder 611 is 300mm to 2000mm according to the stages of the first-stage guide vane 613 and the second-stage guide vane 614, the central cylinder 612 is fixed inside the outer cylinder 611, the central cylinder 612 and the outer cylinder 611 are both cylinders, and the axes of the central cylinder 612 and the outer cylinder 611 are coincident, wherein the bottom of the central cylinder 612 extends out of the outer cylinder 611, the upper end of the central cylinder 612 and the lower end extending out of the outer cylinder 611 are both arranged in a cone shape, which can reduce the resistance of the secondary steam passage, as shown in fig. 3 and 7, the inner side wall of the outer cylinder 611 is fixedly connected with a plurality of through-length guide grooves 615, the guide grooves 615 pass through the gap between the first-stage guide vanes 613 and the second-stage guide vanes 614, the guide grooves 615 are L-shaped, the projection of the guide grooves on the horizontal plane is L-shaped, one side of the L-shape is vertically welded with the inner wall of the outer cylinder 611, after the secondary steam containing the liquid droplets passes through the first-stage guide vane 613 and the second-stage guide vane 614, the liquid droplets move towards the outer cylinder wall of the pneumatic defoaming unit 61 under the action of centrifugal force and are condensed into large liquid droplets on the cylinder wall, and the large liquid droplets are intercepted by the guide groove 615 in the moving process, so that the large liquid droplets quickly fall into the bottom space of the separator along the guide groove 615, and the entrainment of the liquid droplets in the secondary steam is further reduced.

As shown in fig. 1 and 6, each of the first-stage guide vane 613 and the second-stage guide vane 614 is composed of a plurality of vanes 8, the number of the vanes 8 of the single-stage guide vane is the same as that of the guide groove 615, the plurality of vanes 8 are fixedly connected with the central cylinder 612, and the vanes 8 of the first-stage guide vane 613 and the second-stage guide vane 614 are circumferentially distributed on the outer wall of the central cylinder 612 in an array manner by taking the axis of the central cylinder 612 as the center, and the number of the vanes 8 can be arranged according to the actual situation, in this embodiment, the single-stage guide vane is 12, and the vanes 8 are curved, that is, the included angles between the inner and outer edges of the vanes 8 and the horizontal plane are different, wherein the included angle between the inner and outer edges of the vanes 8 and the horizontal plane is any angle between 30 ° to 60 °, and the included angle between the second-stage guide vane 614 and the horizontal plane is smaller than that between the first-stage guide vane 613 and the horizontal plane is, the smaller the included angle between the vane 8 and the horizontal plane is, the larger the pneumatic droplet is, that the higher the efficiency of the pneumatic defoaming device 6 is, so that the first-stage guide vane 613 performs rough treatment on a rectangular foam liquid, and the fine treatment on the second-stage guide vane 614, and the fine-stage guide vane 8 can be convenient for a centrifugal projection, and a fan-shaped projection is convenient for processing, when the projection is required for the centrifugal force projection, and the fine-removing efficiency is a fan-shaped projection; the projection is that fan-shaped blade 8 is great to the air current influence degree, therefore removes the foam efficiency higher, can adopt when removing the foam efficiency requirement when higher, and this embodiment adopts the projection to be fan-shaped blade 8.

As shown in fig. 1, the wire mesh defoaming device 7 is fixedly connected to the inner wall of the separator housing 1 through a supporting structure 9, the supporting structure 9 is an annular supporting plate, the wire mesh defoaming device 7 is fixed on the annular supporting plate, the annular supporting plate is fixed on the inner side wall of the separator housing 1, and the wire mesh defoaming device 7 is supported and fixed through the annular supporting plate.

As shown in fig. 1, a flushing device 10 is arranged above the wire mesh defoaming device 7, and the flushing device 10 is composed of a spraying pipe network and a high-efficiency nozzle or a plurality of single-fluid spray guns. Washing unit 10 adopts clean sparge water, under higher pressure, form the fine particle that has certain impact force in the nozzle export, carry out the spray of full coverage to silk screen defoaming device 7 and wash, when pneumatic defoaming device 6 and silk screen defoaming device 7's running resistance is higher, it has certain jam to show pneumatic defoaming device 6 and silk screen defoaming device 7, washing unit 10 is used for spraying pneumatic defoaming device 6 and silk screen defoaming device 7 and washes, reduce the risk that the structure blockked up, thereby it smugglies secretly to reduce the thing foam among the secondary steam, also make evaporating system can be stable, continuous operation.

The utility model discloses mainly remove the foam device 6 and silk screen and remove the foam device 7 combination by pneumatics and form, two sets of devices are established ties and are used, and pneumatic foam device 6 that removes mainly gets rid of the big particle diameter liquid drop more than 15 mu m, and silk screen removes foam device 7 and mainly gets rid of the little particle diameter liquid drop less than 15 mu m for the thing foam interception efficiency of secondary steam is higher, and pneumatic foam device 6 that removes is difficult for blockking up is used for intercepting big particle diameter liquid drop, behind the interception of most liquid drops, through silk screen remove foam device 7; the wire mesh defoaming device 7 is easy to scale and block and is only used for intercepting residual liquid drops with small particle size; and (3) carrying out grading treatment on liquid drops with different particle sizes, and realizing efficient defoaming of secondary steam by utilizing the advantages of each device.

The process principle of the utility model is as follows: high-salinity wastewater enters the separator shell 1 through the feed liquid inlet 3, flash evaporation is carried out under the negative pressure operation environment, and partial water in the feed liquid is evaporated to form secondary steam; the unevaporated feed liquid enters an external circulation heating system through a feed liquid outlet 2, and then enters a separator shell 1 through a feed liquid inlet 3 after being heated, so that a circulation evaporation process is formed; the secondary steam carries a large amount of fog-drop-shaped object foam, and the object foam upwards sequentially passes through the pneumatic defoaming device 6, the silk screen defoaming device 7 and the secondary steam outlet 4 and then enters a next effect or a compressor.

After the secondary steam passes through the guide vanes in the pneumatic defoaming device 6, the foam droplets flow and converge towards the outer cylinder wall under the action of centrifugal force, the small-particle-size droplets converge into large droplets, and finally the large droplets are intercepted by the guide groove 615 and fall into a slurry pool at the bottom of the separator along the guide groove 615; under the interference of the guide vanes, the flow velocity of the secondary steam is changed from axial to partial tangential, so that the whole flow velocity is increased, but the axial velocity is reduced, the residence time of the fog drops in the gas space at the upper part of the separator is increased, and the height of the separator is reduced. Therefore, the intercepted limit particle size of the liquid drops is 15 microns, and the vast majority of large-particle-size liquid drops are intercepted, so that the treatment capacity and the scaling risk of a subsequent defoaming device are reduced; the small-particle-size liquid drops cannot be completely intercepted due to small mass and small pneumatic centrifugal force.

The pneumatic defoaming device 6 is provided with a plurality of stages of guide vanes, the vanes 8 of the guide vanes are annularly arranged around the central cylinder 612 and are obliquely arranged between the central cylinder 612 and the outer cylinder 611, and the pneumatic defoaming device 6 increases the centrifugal effect of airflow under the guide effect of the vanes 8 by utilizing the rotational flow principle, strengthens the Brownian motion, is beneficial to intercepting and capturing liquid drops in secondary steam on the wall of the outer cylinder 611, and improves the intercepting efficiency of the secondary steam. The outer cylinder of the pneumatic defoaming device 6 is provided with a plurality of guide grooves 615, so that intercepted liquid drops quickly fall into the bottom of the separator, and the entrainment of the material foam in the secondary steam is further reduced.

This kind of remove foam composite set to evaporation and separation equipment reasonable in design to, arrange in the upper end of silk screen defoaming device 7 and wash 10 devices, can directly wash the device, need not to wash pneumatic defoaming device 6 and silk screen defoaming device 7 from dismantling in the separator, labour saving and time saving, the operation maintenance of the equipment of being convenient for has strengthened the practicality.

All the technical features of the above embodiments can be arbitrarily combined (as long as there is no contradiction between the combinations of the technical features), and for brevity of description, all the possible combinations of the technical features in the above embodiments are not described; these examples, which are not explicitly described, should be considered to be within the scope of the present description.

The present invention has been described in considerable detail by the general description and the specific examples given above. It should be noted that, without departing from the inventive concept, it is obvious that several variations and modifications can be made to the specific embodiments, which fall within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (9)

1. The utility model provides an evaporation and separation equipment is with pneumatic high-efficient defoaming device, includes separator casing (1), its characterized in that: feed liquid export (2) have been seted up to the bottom of separator casing (1), secondary steam export (4) have been seted up at the top of separator casing (1), feed liquid import (3) have been seted up to the lateral wall of separator casing (1), inside from the bottom up of separator casing (1) has set gradually pneumatic defoaming device (6) and silk screen defoaming device (7), be provided with seal structure (5) in separator casing (1), seal structure (5) are the separator casing divide into upper and lower two parts, just pneumatic defoaming device (6) pass seal structure (5).

2. The pneumatic high-efficiency defoaming device for the evaporation separation equipment as claimed in claim 1, wherein: the sealing structure (5) comprises an upper sealing plate (51) and a lower sealing plate (52), the upper sealing plate (51) is parallel to the lower sealing plate (52), the outer sides of the upper sealing plate (51) and the lower sealing plate (52) are fixedly connected with the separator shell (1), and the upper side and the lower side of the pneumatic defoaming device (6) are respectively and fixedly connected to the inner sides of the upper sealing plate (51) and the lower sealing plate (52).

3. The pneumatic high-efficiency defoaming device for the evaporation separation equipment as claimed in claim 2, wherein: the pneumatic defoaming device (6) is composed of a plurality of pneumatic defoaming units (61), and the plurality of pneumatic defoaming units (61) are arranged in a regular triangle or square shape.

4. The pneumatic high-efficiency defoaming device for the evaporation separation equipment as recited in claim 3, wherein: the pneumatic defoaming unit (61) comprises an outer cylinder body (611), a central cylinder (612), a first-stage guide vane (613) and a second-stage guide vane (614), the top of the outer cylinder body (611) is fixedly connected to the inner side of the upper sealing plate (51), the bottom of the outer cylinder body (611) is fixedly connected to the inner side of the lower sealing plate (52), the central cylinder (612) is fixedly connected to the inner side of the outer cylinder body (611), the axis of the central cylinder (612) is coincident with the axis of the outer cylinder body (611), the second-stage guide vane (614) and the first-stage guide vane (613) are respectively and fixedly connected to the upper end and the lower end of the central cylinder (612), a plurality of guide grooves (615) are fixedly connected to the inner side wall of the outer cylinder body (611), and the guide grooves (615) penetrate through a gap between the first-stage guide vane (613) and the second-stage guide vane (614).

5. The pneumatic high-efficiency defoaming device for the evaporation separation equipment as claimed in claim 4, wherein: the first-stage guide vane (613) and the second-stage guide vane (614) are composed of a plurality of vanes (8), the included angle between the second-stage guide vane (614) and the horizontal plane is smaller than that between the first-stage guide vane (613) and the horizontal plane, and the first-stage guide vane (613) and the second-stage guide vane (614) are distributed in a circumferential array by taking the axis of the central cylinder (612) as the center.

6. The pneumatic high-efficiency defoaming device for the evaporation separation equipment as recited in claim 5, wherein: the blade (8) is in a planar shape or a curved surface shape.

7. The pneumatic high-efficiency defoaming device for the evaporation separation equipment as claimed in claim 1, wherein: the bottom of the wire mesh defoaming device (7) is fixed on the inner wall of the separator shell (1) through a supporting structure (9).

8. The pneumatic high-efficiency defoaming device for the evaporation separation equipment as claimed in claim 1, wherein: a washing device (10) is arranged above the silk screen defoaming device (7).

9. The pneumatic high-efficiency defoaming device for the evaporation separation equipment as claimed in claim 8, wherein: the flushing device (10) consists of a spraying pipe network and a high-efficiency nozzle or a plurality of single-fluid spray guns.

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