CN114570116A - High-efficient baffling board and high-efficient baffling board defroster - Google Patents
High-efficient baffling board and high-efficient baffling board defroster Download PDFInfo
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- CN114570116A CN114570116A CN202210203045.3A CN202210203045A CN114570116A CN 114570116 A CN114570116 A CN 114570116A CN 202210203045 A CN202210203045 A CN 202210203045A CN 114570116 A CN114570116 A CN 114570116A
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- 239000007788 liquid Substances 0.000 claims abstract description 287
- 239000000203 mixture Substances 0.000 claims abstract description 76
- 238000009826 distribution Methods 0.000 claims abstract description 72
- 238000007599 discharging Methods 0.000 claims description 10
- 239000003595 mist Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 238000000926 separation method Methods 0.000 abstract description 35
- 230000001965 increasing effect Effects 0.000 description 25
- 230000000694 effects Effects 0.000 description 9
- 239000000428 dust Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000011044 inertial separation Methods 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000561734 Celosia cristata Species 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 210000001520 comb Anatomy 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
- B01D45/08—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/18—Cleaning-out devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
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Abstract
The invention provides a high-efficiency baffle plate and a high-efficiency baffle plate demister, and relates to the technical field of gas-liquid separation. This high-efficient baffling board includes the baffling board of vertical setting, the baffling board is provided with mixture inlet area, baffling district and gas outlet district, mixture inlet area is located the bottom of baffling board, gas outlet district is located the top of baffling board, the baffling district is located between mixture inlet area and the gas outlet district, the baffling district is including windward side and leeward side, the windward side is provided with a plurality of album liquid posts that are used for improving liquid capture volume, mixture inlet area is provided with and is used for leading the gas-liquid distribution board to the windward side with gas-liquid mixture, gas-liquid distribution board sets up and faces towards adjacent windward side with mixture inlet area slope. Liquid collecting column and gas-liquid distribution plate have strengthened the entrapment of windward to liquid in this application, have improved the liquid trapping volume, improve the discharge rate of liquid simultaneously, can guarantee that the baffling board works under high throughput, improve the separation efficiency and the operation elasticity of baffling board.
Description
Technical Field
The invention relates to the technical field of gas-liquid separation, in particular to a high-efficiency baffle plate and a high-efficiency baffle plate demister.
Background
The gas-liquid separation technology is widely applied to petroleum and chemical production, can be used for separating liquid drops carried in gas or removing corrosive liquid drops in the gas, and ensures that the gas emission meets the environmental protection requirement; or used for recovering useful liquid phase medium in gas phase, thereby improving economic benefit.
The gas-liquid separation technology mainly comprises inertial separation and centrifugal separation, wherein the inertial separation mainly comprises a baffle plate demister and a wire mesh demister; the centrifugal separation mainly comprises a cyclone plate demister and a cyclone separator. The most widely used gas-liquid separator at present is a wire mesh demister and a baffle plate demister, wherein the baffle plate demister has large treatment capacity, high trapping efficiency for liquid drops with the diameter of more than 30 mu m, small pressure drop and wide industrial application range. However, in practical application, the baffle plate demister mainly has the following 3 problems: 1. in the existing baffle plate demister, the baffle plate has low trapping efficiency and small operation elasticity, so that the further improvement of the separation efficiency is limited; 2. the prior baffle plate demister has limited liquid discharge rate, and influences the operation elasticity and stability of the device; 3. when the dust content of the inlet gas is large, the baffle plate is easy to scale, and the long-term use of the baffle plate demister is influenced.
In view of this, the present application is specifically proposed.
Disclosure of Invention
Objects of the invention include, for example, providing a high efficiency baffle and a high efficiency baffle mist eliminator.
Embodiments of the invention may be implemented as follows:
in a first aspect, the invention provides a high-efficiency baffle plate, which comprises a vertically arranged baffle plate, wherein the baffle plate is provided with a mixture inlet area, a baffling area and a gas outlet area, the mixture inlet area is positioned at the bottom of the baffle plate, the gas outlet area is positioned at the top of the baffle plate, the baffling area is positioned between the mixture inlet area and the gas outlet area, the baffling area comprises a windward side and a leeward side, the windward side is provided with a plurality of liquid collecting columns for improving liquid collecting capacity, the mixture inlet area is provided with a gas-liquid distribution plate for guiding a gas-liquid mixture to the windward side, and the gas-liquid distribution plate and the mixture inlet area are obliquely arranged and face to the adjacent windward side.
In an optional embodiment, the gas-liquid distribution plate is arranged along the length direction of the mixture inlet area, one side of the gas-liquid distribution plate close to the gas-liquid distribution plate is plate-shaped, one side of the gas-liquid distribution plate far away from the gas-liquid distribution plate is provided with a first liquid discharge port for discharging liquid,
preferably, the first liquid discharge port is a semicircular opening or a zigzag opening;
preferably, the gas-liquid distribution plates are multiple and the arrangement modes of the multiple gas-liquid distribution plates are the same or different.
In an alternative embodiment, the height of the gas-liquid distribution plate protruding from the mixture inlet is 1/3-1/20 of the distance between any two adjacent baffles.
In an alternative embodiment, the gas-liquid distribution plate and the mixture inlet area form an angle α of 10 ° to 90 °; preferably, the gas-liquid distribution plate is flat and parallel to the windward side;
preferably, the gas-liquid distribution plate is triangular prism-shaped, a first side surface of the gas-liquid distribution plate is connected with the mixture inlet area, a second side surface of the gas-liquid distribution plate is parallel to the windward side, and a third side surface of the gas-liquid distribution plate is located below the second side surface and is connected with the first side surface.
In an alternative embodiment, the angle β between the liquid collecting column and the windward side is 10 ° to 90 °;
preferably, the liquid collecting column is arranged vertically downwards.
In an alternative embodiment, the length of the liquid collecting column is 1/3-1/30 of the space between any two adjacent baffles;
preferably, the liquid collecting column is cylindrical, conical or truncated cone-shaped;
preferably, the liquid collecting column is conical with the tip facing downwards.
In an optional embodiment, a baffle is arranged at the top of the windward side, the baffle is arranged along the length direction of the windward side, one side of the baffle close to the windward side is plate-shaped, and one side of the baffle far away from the windward side is provided with a channel opening for gas circulation;
preferably, the passage opening is a semicircular opening or a zigzag opening.
In an alternative embodiment, the angle γ between the baffle and the windward side is 60 ° -90 °;
preferably, the height of the baffle plate protruding out of the windward side is 1/4-1/30 of the distance between any two adjacent baffles.
In an alternative embodiment, the bottom of the mixture inlet area is also provided with a drainage plate, and the bottom of the drainage plate is provided with a second zigzag liquid outlet.
In a second aspect, the present invention provides a high efficiency baffle mist eliminator comprising a high efficiency baffle as set forth in any one of the preceding embodiments.
The beneficial effects of the embodiment of the invention include, for example:
the efficient baffle plate provided by the application can enable a gas-liquid mixture to obliquely flow towards the windward side direction of the baffle plate by arranging the gas-liquid distribution plate, so that the liquid on the windward side is trapped. Meanwhile, the gas-liquid distribution plate has a certain trapping effect on liquid in a gas-liquid mixture inlet area, so that the liquid trapping amount at the side is increased, and the initial separation efficiency of the gas-liquid mixture inlet area is improved. The arrangement of the liquid collecting column can increase the surface area of the windward side, the contact area between the gas-liquid mixture and the windward side is increased, the probability of collision between liquid drops and the baffle plate is increased, the liquid drops are easier to be collected by the windward side of the baffle plate, and the liquid collecting amount of the baffle plate is increased. Meanwhile, the liquid collecting column can improve the liquid discharge rate, the demister can be guaranteed to work under high treatment capacity, and the separation efficiency and the operation elasticity of the device are improved. Meanwhile, when gas with large dust content is treated, the baffle plate demister is easy to scale, and long-period stable operation of the demister is influenced. The application provides a high-efficient baffling board defroster has accelerated the flowing back speed of baffling board, and when handling dusty gas, liquid is accelerated at the flow speed on baffling board surface, increases to the frequency of washing away on baffling board surface, and the dust is difficult for adsorbing on the baffling board, can prevent baffling board surface scale deposit, guarantees the long period steady operation of baffling board defroster.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a high-efficiency baffle plate provided by the present application when a gas-liquid distribution plate is plate-shaped;
fig. 2 is a schematic structural diagram of the high-efficiency baffle plate provided by the present application when the gas-liquid distribution plate is triangular prism-shaped;
FIG. 3 is a schematic view of the mixture inlet region of the high efficiency baffle provided herein;
FIG. 4 is a first schematic view of a baffle of the high efficiency baffle provided herein;
fig. 5 is a second structural diagram of a baffle plate of the high-efficiency baffle provided by the application.
Icon: 100-high efficiency baffle plate; 110-a baffle; 120-a mixture inlet zone; 121-a gas-liquid distribution plate; 122-first drain; 123-a drainage plate; 124-a second drain port; 130-a baffled region; 131-windward side; 132-leeward side; 133-a liquid collecting column; 134-a baffle; 135-channel port; 140-gas outlet zone.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
Referring to fig. 1, the present embodiment provides a demister with efficient baffles 100, which is composed of a plurality of efficient baffles 100. The structure of the baffle plate 110 is improved in the application, so that the influence of secondary entrainment on the separation efficiency is reduced, the capture amount and the discharge efficiency of liquid on the surface of the baffle plate 110 are improved, and the operation elasticity and the stability of the device are ensured. In the present application, baffle 110 forms include, but are not limited to, trapezoidal, dog-leg, streamlined; the number of channels of baffle 110 includes, but is not limited to, single channel, double channel, or triple channel.
In the present application, taking the dual-channel trapezoidal baffle 110 as an example, the baffle 110 is vertically disposed, the baffle 110 is provided with a mixture inlet region 120, a baffling region 130 and a gas outlet region 140, the mixture inlet region 120 is located at the bottom of the baffle 110, the gas outlet region 140 is located at the top of the baffle 110, and the baffling region 130 is located between the mixture inlet region 120 and the gas outlet region 140. In the present application, the mixture inlet area 120 is an area for the gas-liquid mixture to enter, the baffling area 130 includes a windward side 131 and a leeward side 132, the windward side 131 is a main area for liquid separation, the gas outlet area 140 is an area for gas to be discharged after gas-liquid separation, and the separated liquid flows downwards along the liquid collecting column 133 arranged on the surface of the windward side 131 and is discharged, and flows downwards along the surface of the baffle plate 110 and is discharged from the mixture inlet area 120.
The structure of the baffle plate 110 is improved in four aspects, namely, a gas-liquid distribution plate 121 is arranged in the mixture inlet area 120, a liquid discharge plate 123 is arranged in the mixture inlet area 120, a liquid collection column 133 is arranged on the windward side 131, and a baffle 134 is arranged on the top of the windward side 131. Next, the improvements of these four aspects will be described separately.
In a first aspect, referring to fig. 1, fig. 2 and fig. 3, in the present application, the mixture inlet area 120 is provided with a gas-liquid distribution plate 121 for guiding the gas-liquid mixture to the windward side 131, and the gas-liquid distribution plate 121 and the mixture inlet area 120 are disposed obliquely and face the adjacent windward side 131.
Since the first windward side 131 of the mixture inlet region 120 having the flow-deflecting region 130 is relatively distant before the gas-liquid distribution plate 121 is installed, the amount of the gas-liquid mixture trapped on the first windward side 131 facing the side is relatively small. In this application, through add gas-liquid distribution plate 121 in mixture entrance area 120, when gas-liquid mixture from bottom to top flows through gas-liquid distribution plate 121, receive the effect of blockking of gas-liquid distribution plate 121, gas-liquid mixture flows to baffling board 110 windward side 131 direction slope, increased the entrapment of windward side 131 to this side liquid, and simultaneously, gas-liquid distribution plate 121 also has certain entrapment effect to the liquid of gas-liquid mixture entrance area 120, has strengthened this side liquid entrapment volume, has improved the initial separation efficiency of gas-liquid mixture in the entrance area.
The gas-liquid distribution plate 121 is disposed along the length direction of the mixture inlet area 120, one side of the gas-liquid distribution plate 121 close to the gas-liquid distribution plate 121 is plate-shaped, and one side of the gas-liquid distribution plate 121 far from the gas-liquid distribution plate 121 is provided with a first liquid discharge port 122 for discharging liquid, and preferably, the first liquid discharge port 122 is a semicircular opening or a zigzag opening. The first drain opening 122 is configured to collect liquid trapped on the gas-liquid distribution plate 121 and drain the collected liquid from the first drain opening 122, and the height of the gas-liquid distribution plate 121 protruding from the mixture inlet is 1/3-1/20 of the distance between any two adjacent baffles 110. The included angle alpha between the gas-liquid distribution plate 121 and the mixture inlet area 120 is 10-90 degrees; the gas-liquid distribution plate 121 mainly plays a role in changing the flowing direction of the gas-liquid mixture, and the gas-liquid mixture can be gathered to the windward side 131 more by the included angle of 10 degrees to 90 degrees.
It should be noted that the number of the gas-liquid distribution plates 121 in this application may be one or more, and when there are a plurality of gas-liquid distribution plates 121, the arrangement of the plurality of gas-liquid distribution plates 121 may be the same or different, and the shape, structure and arrangement position thereof are not limited. For example, referring to fig. 1, the gas-liquid distribution plate 121 is flat and the gas-liquid distribution plate 121 is parallel to the windward side 131, and at this time, the gas-liquid mixture may vertically impact the windward side 131 after changing the flow direction through the gas-liquid distribution plate 121, which is beneficial to increasing the contact area between the gas-liquid mixture and the windward side 131, thereby increasing the liquid capture amount.
Referring to fig. 2, the gas-liquid distribution plate 121 may also be triangular prism-shaped, a first side surface of the gas-liquid distribution plate 121 is connected to the mixture inlet area 120, a second side surface of the gas-liquid distribution plate 121 is parallel to the windward side 131, and a third side surface of the gas-liquid distribution plate 121 is located below the second side surface and is connected to the first side surface. The triangular prism-shaped gas-liquid distribution plate 121 can ensure that the gas-liquid mixture flows obliquely towards the windward side 131 of the baffle plate 110, so that the liquid on the windward side 131 is captured more strongly, and the gas-liquid mixture can be prevented from forming below the gas-liquid distribution plate 121. In the second aspect, the mixture inlet area 120 is further provided at the bottom thereof with a drain plate 123, and the bottom of the drain plate 123 is provided with a second drain port 124 having a zigzag shape.
The setting of drain plate 123 makes the liquid after the gas-liquid separation discharge fast, and this application can make the liquid on the drain plate 123 when the downstream through the second leakage fluid dram 124 that sets up the cockscomb structure, because the area of drain plate 123 diminishes gradually for the liquid film thickening on the drain plate 123, the most advanced collection, the discharge along drain plate 123 are changeed to liquid.
In a third aspect, the windward side 131 in the present application is provided with a plurality of liquid-collecting columns 133 for increasing the amount of liquid collection.
The arrangement of the liquid collecting column 133 is beneficial to increasing the contact area between the gas-liquid mixture and the windward side 131, the frequency of the impact of liquid drops on the windward side 131 is increased, and the liquid collecting amount is increased; in addition, the liquid collecting column 133 is arranged on the windward side 131, so that the vortex disturbance on the surface of the baffle plate 110 can be enhanced, the effective gas flowing space is reduced, the collision probability between liquid drops and between the liquid drops and the surface of the baffle plate 110 is improved, the liquid drops are more easily collected by the windward side 131 of the baffle plate 110, the liquid collecting amount of the baffle plate 110 is improved, and the liquid drop removing efficiency is improved.
Meanwhile, the liquid collecting column 133 arranged on the windward side 131 can guide the airflow near the windward side 131 to form vortex, the vortex can apply centrifugal force to liquid drops near the windward side 131, the liquid drops are thrown out of the vortex under the action of the centrifugal force, the liquid drops are favorably collided with the wall surface and other liquid drops, and the demisting effect is better than that of a demister of the existing baffle plate 110. When the liquid content of the inlet gas is large, the liquid trapping amount of the demister of the original baffle plate 110 is limited, and the liquid separation efficiency is low; the high-efficiency baffle 100 provided by the application improves the trapping amount of the windward surface 131 of the baffle 110 on liquid and improves the liquid removal efficiency by changing the flow form of the inlet gas-liquid mixture, increasing the contact area between the windward surface 131 of the baffle 110 and the gas-liquid mixture and enhancing the vortex disturbance on the surface of the baffle 110. Thus, the improved demister with baffles 110 can treat gas with a large liquid content, increasing the liquid capture, and thus increasing the throughput and operating flexibility of the device. Meanwhile, the liquid trapping amount is increased, the liquid content in the outlet gas can be effectively reduced, and the separation efficiency is improved.
The included angle beta between the liquid collecting column 133 and the windward side 131 is 10-90 degrees, in the application, the liquid collecting column 133 and the windward side 131 are arranged at an angle, the contact area between the windward side 131 and the gas-liquid mixture can be increased, and preferably, the liquid collecting column 133 in the application is arranged vertically downwards. The vertical downward direction can enable the liquid collecting column 133 not only to have the function of enhancing the catching amount of the windward side 131, but also can enable the separated liquid to be discharged along the vertically downward liquid collecting column 133, and the length of the liquid collecting column 133 is 1/3-1/30 of the distance between any two adjacent baffles 110; the shape of the liquid-collecting column 133 includes, but is not limited to, cylindrical, conical, or truncated-cone; preferably, the catch column 133 is conical with the tip facing downward. The liquid-collecting column 133 can make the liquid part attached on the windward side 131 move downwards along the liquid-collecting column 133, and the discharge rate of the liquid on the windward side 131 is improved. The liquid collecting columns 133 may be disposed on the windward side 131 in a uniform manner, or may be disposed at intervals or randomly.
Because the gas-liquid separation efficiency of the baffle plate 110 is increased along with the increase of the gas velocity, and the gas velocity is increased, under the same working condition, the treatment capacity of liquid is larger, if the liquid discharge capacity of a liquid discharge area is limited, the liquid holdup of the baffle plate 110 is easy to continuously increase, the gas passage area is continuously reduced, the gas velocity between the baffle plates 110 is continuously increased, and when the gas velocity exceeds the critical gas velocity, the gas is easy to tear a liquid film, so that the secondary entrainment of the liquid is caused, the further improvement of the separation efficiency is limited, and the stable operation of the demister is influenced.
The liquid collecting column 133 and the liquid discharging plate 123 provided by the application can improve the discharging speed of the liquid. Before the liquid-collecting column 133 is not provided, the liquid trapped on the windward side 131 of the baffle 110 moves mainly downward along the baffle 110, and is discharged at the lower edge of the baffle 110 with less area for liquid discharge. After the liquid collecting column 133 is arranged on the windward side 131 of the baffle 110, taking the vertically downward conical liquid collecting column 133 as an example, the liquid collecting column 133 can make the liquid part attached to the windward side 131 flow downward along the liquid collecting column 133, so that the discharge rate of the liquid on the windward side 131 is improved. Meanwhile, the lower edge of the liquid discharge plate 123 is of a sawtooth-shaped structure, so that the liquid discharge area of the baffle plate 110 is gradually reduced while the liquid on the baffle plate 110 moves downwards, a liquid film on the liquid discharge plate 123 becomes thick, and the liquid is easier to collect and discharge along the liquid discharge plate 123. Therefore, the liquid collecting column 133 and the liquid discharging plate 123 which are arranged in the liquid collecting device can improve the liquid discharging rate, improve the liquid discharging efficiency, ensure that the demister works under high treatment capacity, and improve the separation efficiency and the operation elasticity of the device.
In a fourth aspect, a baffle 134 is provided on top of the windward side 131.
The baffle 134 is arranged along the length direction of the windward side 131, one side of the baffle 134 close to the windward side 131 is plate-shaped, and one side of the baffle 134 far away from the windward side 131 is provided with a channel opening 135 for gas circulation; the shape of the access port 135 includes, but is not limited to, a semi-circular opening (as shown in FIG. 4) or a serrated opening (as shown in FIG. 5). The included angle gamma between the baffle 134 and the windward side 131 is 60-90 degrees; the height of the baffle 134 protruding from the windward side 131 is 1/4-1/30 of the spacing between any two adjacent baffles 110. Because the windward side 131 of the baffle plate 110 is the main area for gas-liquid separation, the liquid in the gas-liquid mixture has large inertia and difficult changing direction, and is easy to attach and collect on the windward side 131 of the baffle plate 110, while at the curved part of the baffle plate 110, the gas has high moving speed and is easy to tear the liquid at the curved part of the baffle plate 110, and the formed small liquid drops are easy to be taken away by the gas moving obliquely upwards, so that the separated liquid is carried secondarily, and the separation efficiency of the demister of the baffle plate 110 is reduced. In the application, the baffle 134 is arranged at the top of the windward side 131, so that the liquid on the windward side 131 has a certain protection effect, one side of the baffle 134, which is close to the windward side 131, is plate-shaped, and the height of the baffle 134 is higher than the thickness of the liquid attached to the baffle 110, so that the tearing effect of the airflow at the bend on the liquid on the windward side 131 can be avoided. Further, compared with the structure of the baffle or the hook arranged at the bend of the existing baffle, the side of the baffle 134 far away from the windward side 131 is provided with a channel opening 135 for gas circulation; the arrangement of the channel port 135 is beneficial to reducing pressure drop, and after the baffle 134 is additionally arranged, the flow area at the bent part of the baffle 110 is reduced, the gas flowing speed at the bent part is increased, and the pressure drop of the baffle 110 is increased; and set up entrance 135 on baffle 134, entrance 135 department is gaseous circulation passageway, and baffle 134 is guaranteeing that the liquid film is not by under the tear prerequisite, sets up entrance 135 at the partial baffle 134 of keeping away from windward side 131, has guaranteed gaseous flow, has reduced the gaseous flow area of bend department and has reduced, the influence of gas velocity increase to the defroster pressure drop, effectively avoids the great problem of pressure drop that leads to of baffle or couple to appear among the prior art. Therefore, the baffle 134 is arranged to reduce the tearing effect of the gas at the bend of the baffle 110 on the liquid on the windward side 131, reduce the secondary entrainment of the liquid, reduce the influence of the increase of the gas velocity on the pressure drop after the baffle 134 is additionally arranged, and improve the separation efficiency of the demister of the baffle 110.
The working process of the high-efficiency baffle 100 provided by the application is as follows:
the baffle plate 110 is vertically arranged, liquid drops entrained by gas firstly pass through the gas-liquid mixture inlet area 120 from bottom to top, and the movement track of the gas-liquid mixture is firstly changed through the gas-liquid distribution plate 121, so that most of the gas-liquid mixture flows to the windward side 131 of the baffle plate 110; the gas-liquid mixture then enters the baffling region 130, and a liquid collection column 133 is disposed on the windward side 131 of the baffling region 130, wherein the liquid collection column 133 can increase the liquid collection amount on the windward side 131 of the baffle 110. The mass of gas is small, the inertia force is small, the moving direction of the curved section of the baffle plate 110 is easy to change, the gas moves upwards along the baffle plate 110, the moving direction is changed for many times at each curved section of the baffle plate 110 according to the difference of the number of demister channels of the baffle plate 110, and the gas is discharged along a gas discharge area at the upper part of the baffle plate 110 after gas-liquid separation for many times; the baffle 134 arranged on the upper part of the windward side 131 of the baffle plate 110 can reduce the tearing of the gas moving at high speed at the curve to the liquid on the windward side 131, the liquid drops have larger mass, larger momentum and poorer following performance, the original motion state is easy to keep under the action of inertia force, the gas mainly collides with a plurality of windward sides 131 on the baffle plate 110 and then is attached to the wall surface of the baffle plate 110, and the attached liquid is partially collected downwards along the wall surface of the baffle plate 110 under the action of gravity and is discharged along the liquid discharge plate 123; part of the gas is discharged along the liquid collecting column 133 on the windward side 131 of the baffle plate 110, and gas-liquid separation is completed.
The specific embodiment is as follows:
case one: the operating gas amount is 500m3H, the water content of the inlet liquid phase is 1000mg/m3Adopting the baffle plate 110 without surface treatment to obtain the discharge rate of liquid of 428.0kg/h and the total efficiency of gas-liquid separation of 85.6 percent; under the same operating condition, the high-efficiency baffle plate 100 demister provided by the application is adopted, the discharge rate of the obtained liquid is 473.0kg/h, and the total efficiency of gas-liquid separation is 94.6%; the total efficiency of gas-liquid separation is improved by 9.0%.
Case two: the operating gas amount is 2000m3H, the water content of the inlet liquid phase is 1000mg/m3Adopting the baffle plate 110 without surface treatment to obtain the liquid discharge rate of 1.716t/h and the total efficiency of gas-liquid separation of 85.8%; under the same operating condition, the high-efficiency baffle plate 100 demister provided by the application is adopted, the discharge rate of the obtained liquid is 1.912t/h, and the total efficiency of gas-liquid separation is 95.6%; the total efficiency of gas-liquid separation is improved by 9.8%.
In summary, in the efficient baffle 100 provided by the present application, the gas-liquid distribution plate 121 is disposed to enable the gas-liquid mixture to flow obliquely toward the windward side 131 of the baffle 110, so as to enhance the liquid capture of the windward side 131. Meanwhile, the gas-liquid distribution plate 121 also has a certain trapping effect on the liquid in the gas-liquid mixture inlet area 120, so that the liquid trapping amount at the side is increased, and the primary separation efficiency of the gas-liquid mixture inlet area 120 is improved. The arrangement of the liquid collecting column 133 can increase the surface area of the windward side 131, the contact area between the gas-liquid mixture and the windward side 131 is increased, the probability of collision between liquid drops and the baffle plate 110 is increased, the liquid drops are easier to be collected by the windward side 131 of the baffle plate 110, and the liquid collecting amount of the baffle plate 110 is increased. The baffle 134 arranged at the top of the windward side 131 can effectively reduce the tearing effect of the gas at the bend of the baffle plate 110 on the liquid on the windward side 131, reduce the secondary entrainment of the liquid and improve the separation efficiency of the demister of the baffle plate 110. Meanwhile, the arrangement of the liquid collecting column 133 and the liquid discharging plate 123 can improve the liquid discharging rate, ensure that the demister works at high treatment capacity, and improve the separation efficiency and the operation elasticity of the device.
Meanwhile, when gas with large dust content is treated, the baffle plate 110 demister is easy to scale, and long-period stable operation of the demister is affected. The application provides a 100 demisters of high-efficient baffling board through set up the collection liquid post 133 that does benefit to the flowing back on baffling board 110, first drain mouth 122 and second drain mouth 124, the flowing back speed of baffling board 110 has been accelerated, when handling dirty gas, liquid is very fast at baffling board 110 surface flowing back speed, the speed of flow accelerates, the frequency of scouring on baffling board 110 surface increases, the dust is difficult for adsorbing on baffling board 110, can prevent 110 surface scale deposit of baffling board, guarantee the long period steady operation of baffling board 110 demister.
The application can improve the operating gas velocity, the liquid-containing gas treatment capacity and the liquid discharge rate of the baffle plate 110, and improve the operating flexibility, the operating stability and the anti-scaling property of the device; meanwhile, the secondary entrainment of liquid is reduced, the liquid content in the outlet gas is reduced, and the separation efficiency is improved on the premise of avoiding overlarge pressure drop.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The efficient baffle plate is characterized by comprising a vertically arranged baffle plate, wherein the baffle plate is provided with a mixture inlet area, a baffling area and a gas outlet area, the mixture inlet area is located at the bottom of the baffle plate, the gas outlet area is located at the top of the baffle plate, the baffling area is located between the mixture inlet area and the gas outlet area, the baffling area comprises a windward side and a leeward side, the windward side is provided with a plurality of liquid collecting columns used for improving liquid catching capacity, the mixture inlet area is provided with a gas-liquid distribution plate used for guiding a gas-liquid mixture to the windward side, and the gas-liquid distribution plate and the mixture inlet area are obliquely arranged and face to the adjacent windward side.
2. The efficient baffle plate as recited in claim 1, wherein the gas-liquid distribution plate is arranged along the length direction of the mixture inlet area, one side of the gas-liquid distribution plate close to the gas-liquid distribution plate is plate-shaped, and one side of the gas-liquid distribution plate far away from the gas-liquid distribution plate is provided with a first liquid discharge port for discharging liquid;
preferably, the first liquid discharge port is a semicircular opening or a zigzag opening;
preferably, the gas-liquid distribution plates are multiple and the arrangement modes of the multiple gas-liquid distribution plates are the same or different.
3. The high efficiency baffle according to claim 2 wherein the height of said gas-liquid distribution plate projecting above said mixture inlet is 1/3-1/20 of the spacing between any two adjacent baffles.
4. The high efficiency baffle of claim 2 wherein the gas-liquid distribution plate is at an angle α of 10 ° to 90 ° to the mixture inlet zone;
preferably, the gas-liquid distribution plate is flat and parallel to the windward side;
preferably, the gas-liquid distribution plate is triangular prism-shaped, a first side surface of the gas-liquid distribution plate is connected with the mixture inlet area, a second side surface of the gas-liquid distribution plate is parallel to the windward side, and a third side surface of the gas-liquid distribution plate is located below the second side surface and is connected with the first side surface.
5. The high efficiency baffle of claim 1 wherein the angle β between the fluid collection column and the windward side is between 10 ° and 90 °;
preferably, the liquid collecting column is arranged vertically downwards.
6. The high efficiency baffle of claim 5 wherein the length of the liquid collection column is 1/3-1/30 of the spacing between any two adjacent baffles;
preferably, the liquid collecting column is cylindrical, conical or truncated cone-shaped;
preferably, the liquid collecting column is conical with the tip facing downwards.
7. The efficient baffle plate as recited in claim 1, wherein a baffle plate is arranged at the top of the windward side, the baffle plate is arranged along the length direction of the windward side, one side of the baffle plate close to the windward side is plate-shaped, and one side of the baffle plate far away from the windward side is provided with a passage opening for gas circulation;
preferably, the passage opening is a semicircular opening or a zigzag opening.
8. The high efficiency baffle of claim 7 wherein the angle γ between the baffle and the windward side is 60 ° -90 °;
preferably, the height of the baffle plate protruding out of the windward side is 1/4-1/30 of the distance between any two adjacent baffles.
9. The high efficiency baffle according to any one of claims 1 to 8 wherein the bottom of the mixture inlet zone is further provided with a drainage plate, and the bottom of the drainage plate is provided with a second drainage port in the shape of a saw tooth.
10. A high efficiency baffle mist eliminator comprising a high efficiency baffle as set forth in any one of claims 1 to 9.
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| CN202210203045.3A CN114570116B (en) | 2022-03-03 | 2022-03-03 | Efficient baffle plate and efficient baffle plate demister |
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| CN202210203045.3A CN114570116B (en) | 2022-03-03 | 2022-03-03 | Efficient baffle plate and efficient baffle plate demister |
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| CN112403209A (en) * | 2019-08-20 | 2021-02-26 | 核动力运行研究所 | Corrugated plate steam-water separation element |
| CN213725693U (en) * | 2020-11-12 | 2021-07-20 | 河北众瑞环保设备有限公司 | Ultra-clean ridge defroster |
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| JPH1157357A (en) * | 1997-08-27 | 1999-03-02 | Taikisha Ltd | Liquid drop separator |
| CN202289712U (en) * | 2011-09-23 | 2012-07-04 | 武汉工程大学 | Novel broken line type three-channel demister |
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| CN213725693U (en) * | 2020-11-12 | 2021-07-20 | 河北众瑞环保设备有限公司 | Ultra-clean ridge defroster |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114570116B (en) | 2024-04-26 |
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