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WO2011110053A1 - Dispositif et procédé de dégazage centrifuge sous vide - Google Patents

Dispositif et procédé de dégazage centrifuge sous vide Download PDF

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Publication number
WO2011110053A1
WO2011110053A1 PCT/CN2011/000369 CN2011000369W WO2011110053A1 WO 2011110053 A1 WO2011110053 A1 WO 2011110053A1 CN 2011000369 W CN2011000369 W CN 2011000369W WO 2011110053 A1 WO2011110053 A1 WO 2011110053A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid
gas
vacuum
side wall
suction port
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2011/000369
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English (en)
Chinese (zh)
Inventor
王文兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BEIJING SHUNJIE TECH Co Ltd
Original Assignee
BEIJING SHUNJIE TECH Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BEIJING SHUNJIE TECH Co Ltd filed Critical BEIJING SHUNJIE TECH Co Ltd
Publication of WO2011110053A1 publication Critical patent/WO2011110053A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • B01D19/0052—Degasification of liquids modifying the liquid flow in rotating vessels, vessels containing movable parts or in which centrifugal movement is caused
    • B01D19/0057—Degasification of liquids modifying the liquid flow in rotating vessels, vessels containing movable parts or in which centrifugal movement is caused the centrifugal movement being caused by a vortex, e.g. using a cyclone, or by a tangential inlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D19/00—Degasification of liquids
    • B01D19/0036—Flash degasification

Definitions

  • the present application relates to a method and apparatus for removing a dissolved gas (including water vapor) in a liquid by applying a higher degree of vacuum in a centrifugal field.
  • the technique of the present application is particularly suitable for various lubricating oils and insulating oils.
  • the vacuum degassing and dehydration treatment of the hydraulic oil can of course be used in other occasions where the liquid needs to be vacuum degassed.
  • the process of vacuum degassing a liquid is usually to introduce the liquid into a closed vacuum tank with a certain degree of vacuum, and the volatile gas (including water vapor) in the liquid is volatilized into the space inside the vacuum tank.
  • the vacuum device draws out the gas to maintain the vacuum inside the vacuum tank.
  • the liquid falls to the bottom of the vacuum tank by gravity, and the vacuum tank is usually discharged by a pump.
  • the usual vacuum processing system is continuously operated, that is, the key processes such as liquid entering the vacuum tank, evacuating the pump, and discharging the liquid at the bottom of the vacuum tank are continuously performed.
  • the invention patent application "method for controlling the combination of a centrifugal pump and a vacuum pump and a gas separation centrifugal pump (Application No. 96196 074. 4)" discloses another centrifugal pump for pumping pulp, which performs vacuum degassing while pumping
  • a similar combination of a centrifugal pump and a vacuum pump is also disclosed in U.S. Patent Nos. 5,151,010, 5,152,663, 5,366,347, 5,842,833.
  • centrifugal vacuum equipment was used to replace the conventional vacuum tank and the bottom drain pump of the empty tank. Some of them also integrated the vacuum pump, which greatly reduced the volume of the treatment system.
  • the above patented technology is mainly for degassing a liquid containing microbubbles, and is characterized in that a bubble-like gas already exists in the liquid, the gas is relatively easily removed, and the working vacuum is also low.
  • the vacuum degassing process is widely used in the vacuum degassing of lubricating oils, insulating oils and hydraulic oils, especially for the removal of free and dissolved gases (including air and moisture). substance).
  • the vacuum degassing unit is combined with the filter unit to form an oil purification treatment device, usually called a vacuum oil filter.
  • a vacuum oil filter When the vacuum degassing unit is working, the higher the vacuum, the more thorough the dehydration and degassing.
  • the higher vacuum referred to herein refers to the liquid entering the vacuum chamber under the vacuum condition.
  • the experience produces a strong boiling phenomenon, so that a large amount of gas including water vapor can be quickly overflowed for the purpose of relatively rapid and thorough degassing and dehydration; while the lower vacuum described herein refers to the vacuum.
  • the liquid entering the vacuum chamber does not have a strong boiling phenomenon, and the volatile gas such as water vapor is mainly removed by increasing the specific surface area of the liquid in the vacuum tank, mainly by evaporation of the surface of the liquid gas.
  • the third is that under certain conditions, when the vacuum oil filter is operated at a higher vacuum, the percentage of water vapor in the evolved gas is higher.
  • the vacuum pump selected by some equipment cannot remove such a high concentration of water vapor. .
  • the present invention provides a centrifugal vacuum degassing apparatus comprising a housing defining an inner chamber, the housing having a liquid inlet for inputting a liquid to be degassed into the inner chamber and a An air suction port for extracting gas from the inner cavity, the air suction port is configured to be connected to an evacuation device, and a rotation axis is disposed between the liquid inlet port and the air suction port in the inner cavity a rotating wheel device having a pair of side walls facing each other in the direction of the rotation axis, one of which One side wall is adjacent to the air suction port and is called a gas side wall, and the other side wall is called a liquid side wall.
  • the wheel device defines a gas-liquid passage between the liquid side wall and the air side wall. From the liquid inlet to the suction port, a plurality of extension members projecting from the gas side wall and/or the liquid side wall for agitating gas and liquid in the gas-liquid passage in the rotating device The rotary motion is generated, the gas and the liquid are separated from each other by centrifugation, the separated gas reaches the suction port, and the degassed liquid flows under centrifugal force to the inner surface of the casing adjacent to the rotating device. a sump, the sump is connected to a liquid outlet for discharging liquid.
  • the present invention also relates to a liquid centrifugal vacuum degassing method comprising the following steps:
  • the present invention utilizes centrifugal force generated in a rotating wheel chamber in a vacuum chamber to suppress a large amount of foam generated by a liquid under a relatively high vacuum condition; the structure of the rotating wheel device is designed to "fall" the liquid in a centrifugal field.
  • the gas in the liquid can be released more fully to promote the separation of the liquid and the gas;
  • the outer edge of the runner device is designed with an impeller and volute structure similar to a centrifugal pump, or a centrifugal vortex
  • the structure of the pump can discharge the vacuum-treated liquid to the vacuum chamber at a certain pressure; the flashed gas is further separated from the entrained liquid droplets through the gas centrifugal purification zone; and the generated gas is continuously extracted by the vacuum pump at the gas outlet, To maintain the vacuum chamber maintained at a higher vacuum.
  • the structure of the runner device can be roughly divided into three functional areas, namely, a gas-liquid mixed flash zone, a liquid centrifugal delivery zone, and a gas centrifugal purification zone;
  • Main working principle of gas-liquid mixed flash zone Introduce the liquid to be treated in the gas-liquid mixed flash zone of the runner device, and transmit a certain peripheral velocity to the liquid during rotation, so that the liquid is under the action of centrifugal force Lateral movement.
  • the liquid introduced into the reel device can be designed to eject the liquid obliquely in a direction of rotation with a set of nozzles, so that the liquid has a certain initial velocity when entering the reel device, thereby improving energy utilization.
  • the number of nozzles is preferably 2-8, preferably 2-4.
  • the liquid to be degassed is strongly boiled under high vacuum conditions and evaporates rapidly, producing a large volume of gas with a low volume and low density.
  • the structure of the runner device can be varied and can be designed in almost any regular or irregular shape, as long as the liquid with bubbles can pass smoothly and the gas can be separated. The basic requirements of the application of the present invention can be met.
  • the degassed liquid flows to the liquid centrifugal delivery zone outside the reel unit.
  • the centrifugal delivery area of the runner device is designed as a suitable centrifugal pump impeller structure, and the corresponding position of the vacuum chamber casing is designed to be the volute structure of the centrifugal pump.
  • the separated liquid can be pressurized with the principle of a centrifugal pump.
  • the vacuum chamber is sent out.
  • the centrifugal pump structure can also be changed to the structure of a centrifugal vortex pump, and the degassed liquid can also be pumped out of the vacuum chamber by centrifugal force.
  • the above technical solution better solves the problems of the prior art that the risk of running oil is large, the volume is large, the heating power is large, etc.
  • the vacuum oil filter machine adopting the technology has small volume and low operating energy consumption. In the case of automatic control of the programmable controller (PLC), it can be operated unattended, and the technical and economic advantages are significant.
  • PLC programmable controller
  • the present technology also involves some other related technologies in implementing applications.
  • the transfer of power to a vacuum chamber with a higher vacuum involves vacuum sealing technology.
  • the common vacuum transmission technology includes magnetic transmission technology and magnetic fluid seal transmission technology.
  • the immersion motor or shielded motor can also be used to directly place the power unit into the vacuum chamber.
  • Vacuum pumps commonly used in vacuum oil filters include liquid ring vacuum pumps, rotary vane vacuum pumps, slide valve vacuum pumps, claw vacuum pumps, and screw types. If more water vapor needs to be extracted, most of the water vapor can be condensed and separated by a condensing method of the refrigerator, and the remaining gas is extracted by the vacuum pump, which can reduce the adverse effect of the water vapor on the vacuum pump and reduce the working load of the vacuum pump.
  • Figure 1 is a perspective view of the outer contour of a centrifugal vacuum degasser of the present invention.
  • Figure 2 is a block diagram of an optimized implementation of an oil-impeding motor-driven runner.
  • Figure 3 is an enlarged view of the runner device of Figure 2;
  • FIG. 4 is a structural view of another embodiment of a reel device.
  • FIG. 5 is a block diagram showing still another embodiment of the reel device.
  • Figure 6 is a block diagram showing still another embodiment of the reel device.
  • FIG. 2 is a structural view of a degassing device for driving an optimized embodiment of the reel device 104 with an oil immersion motor 150, the optimized application of which is the degassing of the insulating oil and Dehydration, of course, can also be used in some other suitable occasions.
  • the following is an example of insulating oil.
  • the upper end of the degassing device is connected to the pipe port or the suction port 400 of the vacuum pump, the side is the liquid outlet or the liquid suction port 300, and the lower portion is the oil inlet port or the liquid inlet port 200.
  • the insulating oil to be treated enters from the oil inlet 200 at the lower portion of the device, and the gas-liquid mixture flashes into the runner device 104 through the gap between the outer casing of the oil-immersing motor 150 and the casing 100 of the degassing device. Steaming area.
  • the gas evaporates quickly under the action of a higher vacuum in the runner.
  • the liquid in the gas-liquid mixed flash zone flows or emanate radially outward, and after reaching the liquid centrifugal delivery zone, the oil is sent out by the principle of a centrifugal pump.
  • the gas enters the gas centrifugal purification zone through the opening of the gas wall of the gas-liquid mixed flash zone.
  • the gas centrifugal purification zone In the gas centrifugal purification zone, a small amount of oil droplets carried in the gas are sucked to the outside by the centrifugal force, and are merged with other liquids through the gap between the runner device and the volute 107 of the deaerator.
  • the fluid at the outlet has a certain pressure and can be connected to the filter via the line valve system.
  • the purified gas is connected to the vacuum pump inlet via a piping system to achieve rapid gas-liquid separation under high vacuum conditions.
  • a vacuum centrifugal degasser includes a casing 100, a liquid inlet 200, an exhaust port 400, and a liquid outlet 300.
  • the housing 100 defines a hollow interior that is covered by an upper cover 130 to seal.
  • a power unit 150 such as a motor is mounted in the inner chamber, and the power unit is fixed to the casing 100.
  • the power unit 150 has an output shaft 102 having an axis of rotation 155.
  • a rotary wheel device 104 is fixedly mounted on the output shaft 102, and the rotary wheel device 104 is located in the hollow inner cavity.
  • the wheel device 104 There are two radially extending side walls 106 and 108, of which the side wall 106 is adjacent to the suction port 400, referred to as the air side wall; and the other side wall 108 is referred to as the liquid side wall. .
  • a plurality of concentric annular plates 112 project upwardly from the liquid side wall 108, and a plurality of concentric annular plates 111 project downwardly from the gas side walls 106.
  • the annular plates 111 and 112 are interposed with each other but do not touch the opposite side walls 106 and 108.
  • a plurality of through holes 116 are formed in the gas side plate 106, thereby allowing the suction port 400 to communicate with the gas and liquid passages defined by the gas wall 106, the liquid side wall 108, and the annular plates 111, 112.
  • a plurality of vanes 122 are formed above the gas wall 106, which on the one hand exert a circular motion on the gas or gas-liquid mixture between the vanes and on the other hand provide a radial flow passage for these gases or gas-liquid mixtures.
  • Liquid is injected into the interior of the housing 100 through the inlet port 200, where the liquid contains dissolved gases, moisture, and other volatile materials.
  • the inner cavity of the housing 100 is evacuated by the air suction port 400, and the motor 150 is actuated to rotate the rotary wheel device 104. Under the action of the vacuum of the cavity, the dissolved gas and moisture and the volatile matter begin to form bubbles which, along with the liquid, enter the wheel device 104 in the direction indicated by the arrow 101, that is, into the gas wall 106, the liquid side wall 108, and
  • the annular plates 111 and 112 define a gas-liquid passage.
  • the gas-liquid mixture entering the gas-liquid passage is rotated by the runner device 104, and under the strong action of the centrifugal force, the gas-liquid mixture is accelerated to be separated into gas and liquid, because the liquid density is larger than the gas. More, especially in high vacuum environments.
  • the evolved gas is collected in the plenum space 118 in the reel unit 104, and the gas is thereby discharged to the suction port 400 in the direction of the arrow 103 via the through hole 116 in the gas wall 106.
  • the liquid is continuously degassed, and the evolved gas is continuously withdrawn from the inner cavity of the casing 100.
  • the gas sent from the runner device 104 through the through hole 116 may still be more or less entrained with liquid, where the gas-liquid mixture is rotated by the blades 122 and further subjected to centrifugal separation.
  • FIGS. 4 shows another embodiment of the present invention, which differs from the embodiment shown in FIGS. 2 and 3 in that the concentric annular plate 111 of FIGS. 2 and 3 is replaced by a bolt and a post 126. 112.
  • Figure 5 shows a further embodiment of the invention, which differs from Figures 2 and 3 in that the concentric annular plates 111 and 112 of Figures 2 and 3 are replaced by blades 128, with concentric cone panels. 129 and the gap 116' therebetween replace the gas side plate 106 of Figures 2 and 3 and the through hole 116 therein.
  • Figure 6 shows a further embodiment of the invention, where the spiral plate 128 replaces the concentricities shown in Figures 2 and 3.
  • the liquid centrifugal delivery zone is located radially outward of the gas-liquid mixed flash zone, and the gas centrifugal purification zone is located above the gas-liquid mixed flash zone.
  • the structure of the runner device is that the gas centrifugal purification zone, the gas-liquid mixed flash zone, and the liquid centrifugal delivery zone are radially arranged from the inside to the outside, because the structural principle of each zone is the same, More details will be described.
  • the structure of the gas-liquid mixed flash zone will have a greater impact on the working effect. According to different application conditions, optimization can be performed. For example, in the case where the foaming phenomenon is not serious, in order to improve the effect of the degassing separation, the gas-liquid mixed flash zone of the runner device shown in FIG. 2 and FIG. 3 is designed to gradually drop the liquid in the centrifugal field, step by step. Separate structure.
  • the gas-liquid mixing flash zone of the runner device shown in Fig. 4 is designed with a plurality of cylinders, and the gas-liquid mixed flash zone generally has a relatively smooth flow passage, and can be adapted to applications with relatively more foam.
  • the area can be designed to resemble a centrifugal pump impeller to speed up liquid discharge.
  • the change of the linear structure of the gas-liquid mixed flash zone can be said to be endless, continuous or intermittent, regular or irregular, It is possible to open or not open the blade, and even a porous filler can be placed.
  • the specific structure of the gas-liquid mixed flash zone cannot be completely listed here.
  • the gas separated by evaporation enters the gas centrifugal purification zone.
  • the gas centrifugal purification zone plays an important role in preventing liquid from entering the vacuum pump from the vacuum line.
  • the separated gas is further subjected to gas-liquid separation through a plurality of rotating blades integrated with the rotating device, thereby ensuring that the gas flowing from the vacuum chamber to the vacuum pump is hardly contained. liquid.
  • the blades of the gas centrifugal purification zone can also have many shapes, but the straight blades are the simplest and most practical.
  • the number of blades may also be more or less, but too small a number will reduce the gas-liquid separation effect, and an excessive amount will increase the weight of the runner device and affect the smooth flow of the gas.
  • the number of blades can be selected from 3 to 40 pieces, preferably from 6 to 16 pieces.
  • the above-mentioned structure of the runner device composed of the gas-liquid mixed flash zone, the liquid centrifugal delivery zone, and the gas centrifugal purification zone has been optimized for various applications, and it is easy to ensure safe and reliable operation of the equipment.
  • the division of these functional areas is divided for ease of description. It is relatively speaking. Sometimes they can be crossed.
  • the gas-liquid mixed flash zone there may be the same blades as the centrifugal pump. It can extend all the way to the liquid centrifugal delivery zone; the blades of the gas centrifugal purification zone can also extend to the gas-liquid mixed flash zone.
  • the above-mentioned revolving device can also be applied in a combination of a plurality of parallels or the like.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Degasification And Air Bubble Elimination (AREA)

Abstract

L'invention porte sur un dispositif et un procédé de dégazage centrifuge sous vide. Le dispositif comprend une enveloppe (100) délimitant une cavité interne. L'enveloppe (100) comprend une entrée de liquide (200) pour l'introduction du liquide devant être dégazé dans la cavité interne et une sortie d'évacuation de gaz (400) pour l'évacuation de gaz de la cavité interne. La sortie d'évacuation de gaz (400) est raccordée à un dispositif de mise sous vide. Un dispositif roue rotative (104) est disposé entre l'entrée de liquide (200) et la sortie d'évacuation de gaz (400) à l'intérieur de la cavité interne et peut tourner autour d'un axe de rotation (155). Le dispositif roue rotative (104) est doté de deux flancs : un flanc côté gaz (106) et un flanc côté liquide (108) en regard l'un de l'autre le long de la direction de l'axe de rotation (155), entre lesquels un passage de gaz-liquide raccordant l'entrée de liquide (200) et la sortie d'évacuation de gaz (400) est délimité. Une pluralité de pièces faisant saillie (111, 112) dans des directions opposées s'étendent du flanc côté gaz (106) et/ou du flanc côté liquide (108) et sont utilisées pour agiter le gaz et le liquide dans le passage de gaz-liquide dans le dispositif roue rotative (104) pour produire un mouvement rotatif. Le gaz et le liquide sont séparés l'un de l'autre sous l'effet centrifuge. Le gaz séparé atteint la sortie d'évacuation de gaz (400), alors que le liquide dégazé s'écoule vers un canal de collecte de liquide (107) sous l'effet de la force centrifuge. Le canal de collecte de liquide (107) est situé au niveau de la surface interne de l'enveloppe (100) au voisinage du dispositif roue rotative (104) et est relié à une sortie de liquide (300) pour l'évacuation du liquide.
PCT/CN2011/000369 2010-03-09 2011-03-08 Dispositif et procédé de dégazage centrifuge sous vide Ceased WO2011110053A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN 201010120927 CN102188840B (zh) 2010-03-09 2010-03-09 离心真空脱气装置
CN201010120927.0 2010-03-09

Publications (1)

Publication Number Publication Date
WO2011110053A1 true WO2011110053A1 (fr) 2011-09-15

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CN (1) CN102188840B (fr)
WO (1) WO2011110053A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101776556B1 (ko) 2017-06-09 2017-09-11 김병용 이중구조의 회전체를 이용한 탈포기
EP4279737A1 (fr) * 2022-05-20 2023-11-22 Zhejiang University Extracteur d'air doté d'une pompe à liquide

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103423205B (zh) * 2013-08-19 2016-03-09 浙江大学 一种离心式脱气输送泵
CN106149441A (zh) * 2015-04-23 2016-11-23 中国制浆造纸研究院 一种高效真空除气器
CN110201426B (zh) * 2019-07-11 2021-04-27 东莞市南粤印刷有限公司 一种利用气流正压振动的印刷油墨消泡设备
CN111389106B (zh) * 2020-03-25 2021-08-24 苏州汇博龙环保科技有限公司 一种耐高温防腐蚀旋流剪切式气液分离器
CN112999702B (zh) * 2021-03-25 2022-11-18 绵阳世诺科技有限公司 一种连续重力薄膜离心排料盘及应用
CN113002829B (zh) * 2021-03-25 2022-11-11 绵阳世诺科技有限公司 一种连续重力薄膜易洁离心排料盘
CN116666294B (zh) * 2023-05-16 2025-11-25 新毅东(北京)科技有限公司 一种气液分离式真空旋转设备

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US4030897A (en) * 1974-11-28 1977-06-21 Saint-Gobain Industries Degassing of liquids
JPH07136406A (ja) * 1993-11-12 1995-05-30 Ebara Corp 連続脱気装置
JP2005205322A (ja) * 2004-01-22 2005-08-04 Nichiban Co Ltd 脱泡処理装置
CN101372522A (zh) * 2007-08-24 2009-02-25 北京化工大学 一种脱除聚合物挥发分的方法及装置
CN100482308C (zh) * 2006-06-15 2009-04-29 武汉理工大学 废水中氨氮的真空负压抽吸脱除方法及设备
CN101453932A (zh) * 2006-04-04 2009-06-10 温德罗普有限责任公司 尤其用于真空吸尘器的液-气分离器

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FI120787B (sv) * 2004-10-19 2010-03-15 Pom Technology Oy Ab Förfarande och anordning för att effektivera avgasning

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Publication number Priority date Publication date Assignee Title
US4030897A (en) * 1974-11-28 1977-06-21 Saint-Gobain Industries Degassing of liquids
JPH07136406A (ja) * 1993-11-12 1995-05-30 Ebara Corp 連続脱気装置
JP2005205322A (ja) * 2004-01-22 2005-08-04 Nichiban Co Ltd 脱泡処理装置
CN101453932A (zh) * 2006-04-04 2009-06-10 温德罗普有限责任公司 尤其用于真空吸尘器的液-气分离器
CN100482308C (zh) * 2006-06-15 2009-04-29 武汉理工大学 废水中氨氮的真空负压抽吸脱除方法及设备
CN101372522A (zh) * 2007-08-24 2009-02-25 北京化工大学 一种脱除聚合物挥发分的方法及装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101776556B1 (ko) 2017-06-09 2017-09-11 김병용 이중구조의 회전체를 이용한 탈포기
EP4279737A1 (fr) * 2022-05-20 2023-11-22 Zhejiang University Extracteur d'air doté d'une pompe à liquide

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CN102188840A (zh) 2011-09-21

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