CN107362589B - Two-stage multi-inlet dynamic pressure deaerator - Google Patents
Two-stage multi-inlet dynamic pressure deaerator Download PDFInfo
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- CN107362589B CN107362589B CN201710646137.8A CN201710646137A CN107362589B CN 107362589 B CN107362589 B CN 107362589B CN 201710646137 A CN201710646137 A CN 201710646137A CN 107362589 B CN107362589 B CN 107362589B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/0042—Degasification of liquids modifying the liquid flow
Abstract
A two-stage multi-inlet dynamic pressure deaerator belongs to the technical field of multiphase flow separation. The device utilizes the rectangle tangential entry of a plurality of equipartitions to guarantee that the circumference flow is even, utilizes the annular runner between outer wall and the umbrella-type cowling panel to realize degasification in advance, utilizes the accurate whirl of dividing guide vane realization, improves separation factor through the awl section of thick bamboo, accomplishes the accurate desorption of gaseous phase of underflow opening. The degasser comprises an external mechanism consisting of an upper cover, a rough-separation rotational flow inlet, a barrel, a conical barrel, a straight cylinder and a bottom cover, and an internal machine body consisting of a rough-separation air outlet pipe, a fine-separation air outlet pipe, an umbrella-shaped rectifying plate and fine-separation guide vanes. The device adopts a two-stage separation structure, and is matched with a fine separation guide vane to generate a strong swirl field, so that the fine removal rate of atmospheric liquid-gas can be obviously improved, the adaptability is strong, and the operation elasticity is large; simple structure, easy maintenance, wide application in multiple gas-liquid separation occasions.
Description
Technical Field
The invention relates to a two-stage multi-inlet dynamic pressure degasser, belonging to the technical field of multiphase flow separation.
Background
The cyclone-type deaerator is a device for realizing separation by utilizing centripetal force difference caused by oil-gas density difference in the cyclone process. The gravity settling device is widely applied to petroleum industry, chemical separation and marine equipment, and gradually replaces the original gravity settling device due to simple structure, low cost and convenient use.
Compared with the traditional gravity separation equipment, the cyclone type deaerator has the advantages of compact structure, high separation efficiency and large operation elasticity, and can adapt to various working conditions. Under the conditions of large liquid-gas ratio and high liquid-gas content, the traditional gravity separator has low working efficiency and the separation effect is difficult to meet the requirements, so that the development of the degasser which has large operation elasticity and can adapt to small gas content and fine separation is very necessary.
Disclosure of Invention
In order to overcome the problems in the prior art, the invention provides a two-stage dynamic pressure degasser, which aims to reduce the liquid-gas ratio of fluid by using a pre-degassing process, increase the separation efficiency of fine separation by using a strong cyclone flow field generated by a guide vane, and effectively overcome the defect that the current cyclone separator has poor performance under the working condition of large liquid-gas ratio.
The technical solution adopted by the invention is as follows: a kind of double-stage multiple entry dynamic pressure deaerator, it includes a degasification assembly in advance, degasification assembly include primary separation cyclone entry, loam cake, tube, umbrella-type cowling panel in advance; the device also comprises a fine degassing component and a two-phase outlet structure, wherein a plurality of primary separation cyclone inlets are uniformly distributed at the upper end of the cylinder in the circumferential direction; the fine degassing component comprises 1-6 fine separation guide vanes which are uniformly distributed in the circumferential direction, a conical cylinder matched with the fine separation guide vanes and a straight cylinder connected with the conical cylinder; the two-phase outlet mechanism comprises a fine gas outlet pipe, a coarse gas outlet pipe, an agglutination and vortex prevention device and a plurality of circumferentially and uniformly distributed liquid outlets; the central opening of the upper cover is connected with the rough gas distribution pipe to form a rough gas distribution channel, a fine gas distribution pipe is concentrically arranged in the rough gas distribution pipe, the middle part of the fine gas distribution pipe is connected with the umbrella-shaped rectifying plate, and the lower end of the fine gas distribution pipe extends to the upper cavity of the agglutination and vortex prevention device; the primary separation cyclone inlet is tangent to the cylinder wall of the cylinder, and the tangential direction of the primary separation cyclone inlet is the same as the rotating direction of the fine separation guide vane; the inner edge of the upper part of the fine-dividing guide vane is connected with the umbrella-shaped rectifying plate, and the outer edge of the fine-dividing guide vane is connected with the conical cylinder; the straight cylinder is internally provided with a coagulation and vortex prevention device, and the bottom of the straight cylinder is provided with a plurality of liquid outlets which are uniformly distributed in the circumferential direction.
The inclination angle A of the cross section of the fine-dividing guide vane is fixed or gradually changed within the range of 30-170 degrees, and the wrap angle B of the fine-dividing guide vane is changed along with the number of the vanes and is within the range of 30-480 degrees.
The invention has the beneficial effects that:
1. the pre-degassing process is introduced, the separation capacity and efficiency are greatly improved compared with single-stage separation, the method can adapt to occasions with low gas content and high requirements on gas content of liquid phase, the operation flexibility is higher, and the applicability is stronger.
2. The fine-divided guide vanes are added inside the cyclone type deaerator, so that a strong cyclone flow field is generated, the cyclone type deaerator has a larger separation factor and a better separation effect compared with a common cyclone type deaerator.
3. A plurality of rectangular tangential inlets are circumferentially and uniformly distributed, so that the circumferential flow balance is ensured, and the central air column is prevented from generating oscillation to influence the separation effect.
4. The fine-dividing guide vanes and the umbrella-shaped rectifying plate can well block the upward baffling of the liquid phase at the bottom, and the aggregation and vortex prevention device is arranged to ensure that the fine-dividing guide vanes and the umbrella-shaped rectifying plate still have a good separation effect under the sloshing working condition.
Drawings
The invention is further illustrated by the following figures and examples.
Fig. 1 is a front view showing a structure of a two-stage multi-inlet dynamic pressure deaerator.
Fig. 2 is a structural plan view of a two-stage multi-inlet dynamic pressure degasser.
Fig. 3 is a structural view of two fine guide vanes.
Fig. 4 is a structural view of the case where three fine guide vanes are used.
Fig. 5 is a schematic view of the wrap angle of a fine guide vane.
In the figure: 1. the device comprises a lower cover, 2, a straight cylinder, 3, a conical cylinder, 4, a cylinder body, 5, a primary separation cyclone inlet, 6, a rough separation air outlet pipe, 7, a fine separation air outlet pipe, 8, an upper cover, 9, an umbrella-shaped rectifying plate, 10, fine separation guide vanes, 11, an agglutination and vortex prevention device, 12 and a liquid outlet.
Detailed Description
Fig. 1 and 2 show a structure diagram of a two-stage multi-inlet dynamic pressure degasser. The two-stage multi-inlet dynamic pressure degasser comprises a pre-degasser assembly, a fine degasser assembly and a two-phase outlet structure. The pre-degassing component comprises a primary separation cyclone inlet 5, an upper cover 8, a cylinder 4 and an umbrella-shaped rectifying plate 9. Three primary separation cyclone inlets 5 are uniformly distributed at the upper end of the cylinder 4 in the circumferential direction. The fine degassing component comprises 2 fine-dividing guide vanes 10 which are circumferentially and uniformly distributed, a cone cylinder 3 matched with the fine-dividing guide vanes 10 and a straight cylinder 2 connected with the cone cylinder 3. The two-phase outlet mechanism comprises a fine gas outlet pipe 7, a coarse gas outlet pipe 6, an agglutination and vortex prevention device 11 and four circumferentially and uniformly distributed liquid outlets 12. The central opening of the upper cover 8 is connected with the rough gas outlet pipe 6 to form a rough gas distribution channel, the fine gas outlet pipe 7 is concentrically arranged in the rough gas outlet pipe 6, the middle part of the fine gas outlet pipe 7 is connected with the umbrella-shaped rectifying plate 9, and the lower end of the fine gas outlet pipe 7 extends to the upper cavity of the agglutination and vortex prevention device 11. The primary separation cyclone inlet 5 is tangent to the cylinder wall of the cylinder 4, and the tangential direction of the primary separation cyclone inlet 5 is the same as the rotating direction of the fine separation guide vane 10. The inner edge of the upper part of the fine-dividing guide vane 10 is connected with an umbrella-shaped rectifying plate 9, and the outer edge is connected with the cone 3. The straight cylinder 2 is internally provided with a coagulation and vortex prevention device 11, and the bottom of the straight cylinder is provided with four liquid outlets 12 which are uniformly distributed in the circumferential direction.
Fig. 3 and 5 show only two fine guide vanes in the form of blocks. The cross section inclination angle a of the fine-dividing guide vane 10 is 60 degrees, and the wrap angle B is 225 degrees.
Fig. 4 and 5 show only the structural diagrams of three fine guide vanes. The cross section inclination angle A of the fine-dividing guide vane 10 is 45 degrees, and the wrap angle B is 180 degrees.
By adopting the technical scheme, the two-stage multi-inlet dynamic pressure degasser divides the separation process into two parts of pre-degassing and fine degassing, most of gas can be removed in the pre-degassing process, the liquid-gas ratio of fluid is reduced, and a proper working condition with a lower liquid-gas ratio is provided for the subsequent fine degassing process, so that the separation efficiency of the separator is improved. The separation is realized by utilizing the large density difference of oil-gas media and the different oil-gas centrifugal force during the rotational flow. The center forms a low-pressure air column during the rotational flow, light component gas is discharged upwards along the air column, and heavy component liquid passes through a liquid phase outlet downwards under the action of gravity and is introduced into subsequent equipment. The separation process has guide vanes and two-stage degassing, so that the high purity of the liquid phase is ensured, the operation flexibility of the equipment is greatly improved, and the separation process is suitable for various occasions with different liquid-gas ratios, different pressures and different flow rates.
Claims (1)
1. A double-stage multi-inlet dynamic pressure degasser comprises a pre-degassing component, wherein the pre-degassing component comprises a primary separation cyclone inlet (5), an upper cover (8), a cylinder (4) and an umbrella-shaped rectifying plate (9); the method is characterized in that: the device also comprises a fine degassing component and a two-phase outlet structure, wherein a plurality of primary separation cyclone inlets (5) are uniformly distributed at the upper end of the cylinder (4) in the circumferential direction; the fine degassing component comprises 1-6 fine separation guide vanes (10) which are uniformly distributed in the circumferential direction, a conical cylinder (3) matched with the fine separation guide vanes (10) and a straight cylinder (2) connected with the conical cylinder (3); the two-phase outlet structure comprises a fine gas outlet pipe (7), a coarse gas outlet pipe (6), a coagulation and vortex prevention device (11) and a plurality of circumferentially and uniformly distributed liquid outlets (12); the central opening of the upper cover (8) is connected with the rough gas distribution pipe (6) to form a rough gas distribution channel, a fine gas distribution pipe (7) is concentrically arranged in the rough gas distribution pipe (6), the middle part of the fine gas distribution pipe (7) is connected with an umbrella-shaped rectifying plate (9), and the lower end of the fine gas distribution pipe (7) extends to the upper cavity of the agglutination and vortex prevention device (11); the primary separation cyclone inlet (5) is tangent to the cylinder wall of the cylinder body (4), and the tangential direction of the primary separation cyclone inlet (5) is the same as the rotating direction of the fine separation guide vanes (10); the inner edge of the upper part of the fine-dividing guide vane (10) is connected with an umbrella-shaped rectifying plate (9), and the outer edge of the fine-dividing guide vane is connected with the conical cylinder (3); a coagulation and vortex prevention device (11) is arranged in the straight cylinder (2), and a plurality of liquid outlets (12) which are uniformly distributed in the circumferential direction are formed in the bottom of the straight cylinder;
the inclination angle A of the cross section of the fine-dividing guide vane (10) is fixed or gradually changed within the range of 45-170 degrees, and the wrap angle B of the fine-dividing guide vane (10) is changed along with the number of the vanes and is within the range of 180-480 degrees.
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| CN201710646137.8A CN107362589B (en) | 2017-08-01 | 2017-08-01 | Two-stage multi-inlet dynamic pressure deaerator |
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| CN107362589B true CN107362589B (en) | 2022-10-04 |
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| CN2173661Y (en) * | 1993-12-08 | 1994-08-10 | 石油大学(华东) | Solid- or liquid-contg. gas separator |
| CN202762224U (en) * | 2012-09-25 | 2013-03-06 | 长沙有色冶金设计研究院有限公司 | Lower pressure steam-water separator |
| CN103752425A (en) * | 2013-12-26 | 2014-04-30 | 天津彩意科技有限公司 | Novel efficient cyclone separator |
| CN104668113A (en) * | 2015-03-30 | 2015-06-03 | 魏昊元 | Integrated coaxial recycling serial connection type high-efficiency cyclone separator |
| CN205340359U (en) * | 2015-12-31 | 2016-06-29 | 广西玉林卓越动力发电设备有限公司 | Novel dehydration of cyclone formula device |
| CN207532843U (en) * | 2017-08-01 | 2018-06-26 | 大连理工大学 | A kind of twin-stage multiple entry dynamic pressure deaerator |
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