CN115155089B - Pressure balancing device for ethyl acetate rectifying tower - Google Patents
Pressure balancing device for ethyl acetate rectifying tower Download PDFInfo
- Publication number
- CN115155089B CN115155089B CN202210718569.6A CN202210718569A CN115155089B CN 115155089 B CN115155089 B CN 115155089B CN 202210718569 A CN202210718569 A CN 202210718569A CN 115155089 B CN115155089 B CN 115155089B
- Authority
- CN
- China
- Prior art keywords
- pressure
- rectifying tower
- ethyl acetate
- driving
- ball body
- 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.)
- Active
Links
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 title claims abstract description 45
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 23
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- 238000004140 cleaning Methods 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 5
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 210000004177 elastic tissue Anatomy 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 12
- 239000000047 product Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/42—Regulation; Control
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/48—Separation; Purification; Stabilisation; Use of additives
- C07C67/52—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
- C07C67/54—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation
Abstract
The invention discloses a pressure balancing device for an ethyl acetate rectifying tower, which belongs to the technical field of chemical industry and solves the problems of large pressure fluctuation range, large pressure regulation deviation and low pressure stability of the tower top in the prior art. According to the invention, the pressure of the top of the whole rectifying tower is controlled to be a micro positive pressure control system by matching the pressure dividing component and the pressurizing component, so that the adjustment of the pressure in a small range of the top of the rectifying tower is realized, the stability of the pressure of the top of the rectifying tower is ensured, and the rectifying quality of products is improved.
Description
Technical Field
The invention belongs to the technical field of chemical industry, and particularly relates to a pressure balancing device for an ethyl acetate rectifying tower.
Background
In the automatic control of the rectification column, maintaining the column pressure constant is a stable operating condition. The pressure changes will cause the change of gas phase flow rate and gas-liquid balance condition in the tower, resulting in the change of material balance in the tower, and the temperature of tower plate indirectly reflects the material components, so that constant pressure is a prerequisite for ensuring material balance and product quality. The pressure control of the rectifying towers at present mainly comprises control methods such as pressure and heat bypass control of the rectifying towers and floating pressure control of the rectifying towers, and because the pressure control of the rectifying towers is often controlled by changing the flow of a coolant or changing the heat exchange area and the like and by changing the parameters of a condenser, the pressure control has certain hysteresis, and only can control the fluctuation of the tower pressure within a certain range, the gas-liquid mass transfer and heat transfer effects in the rectifying towers are affected, and further the rectifying effect of products is affected.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a pressure balancing device for an ethyl acetate rectifying tower, which has the advantages of small pressure fluctuation range of the tower top, small pressure regulating deviation and high pressure stability of the tower top.
In order to achieve the technical purpose, the pressure balancing device for the ethyl acetate rectifying tower adopts the following technical scheme:
the pressure balancing device for the ethyl acetate rectifying tower comprises a rectifying tower, wherein the top of the rectifying tower is connected with a positive pressure mechanism for stabilizing the internal pressure of the rectifying tower, the positive pressure mechanism comprises a top pressure sensor for detecting the top pressure of the rectifying tower, and the other side of the top pressure sensor is respectively connected with a pressure dividing component and a pressure boosting component;
the pressure dividing assembly comprises a pressure dividing box, a cleaning piece arranged at the end part of the pressure dividing box and a conveying piece arranged in the pressure dividing box, wherein an inlet end is arranged at the side part of the pressure dividing box, an outlet end is arranged at the top of the pressure dividing box, the cleaning piece is inserted into the end part of the inlet end, the rear end of the cleaning piece is communicated with a conveying cavity arranged in the pressure dividing box, a diversion guide groove and a diversion guide groove facing the inlet end and the outlet end are respectively arranged on the outer wall of the conveying cavity, the diversion guide groove extends to the bottom of the conveying cavity along the end port and gradually reduces in inner diameter, the diversion guide groove extends to the end port along the central shaft part of the conveying cavity and gradually increases in inner diameter, the conveying piece comprises driving teeth arranged in the conveying cavity, a connecting shaft in the middle of the driving teeth penetrates through the inner wall of the pressure dividing box and is electrically connected with a driving motor, the driving motor is arranged at the back of the pressure dividing box, a deformation ring set is circumferentially sleeved on the periphery of the driving teeth, a plurality of driving edge teeth meshed with the driving edge sealing strips are circumferentially arranged on the inner wall of the deformation ring set, the deformation ring set comprises elastic fiber ring sleeves connected with the bottoms of the driving edge teeth, and the sealing strips are uniformly distributed among the grooves uniformly along the periphery;
the supercharging assembly comprises a ball body, a spherical air bag is arranged inside the ball body, an air outlet pipe is arranged at the top of the ball body, an air inlet pipe is arranged at the bottom of the ball body, the upper portion of the air outlet pipe is communicated with the top of the rectifying tower, the lower portion of the air outlet pipe is communicated with the air bag, a unidirectional cone thorn is arranged at the side portion of the ball body, the unidirectional cone thorn is inserted into a containing cylinder communicated with the inside of the ball body, a limiting ring is arranged at the joint of the containing cylinder and the ball body, the end portion of the limiting ring is abutted against a piston capable of freely moving along the inner cavity of the containing cylinder, and a U-shaped pipe is communicated with the tail portion of the containing cylinder.
Preferably, the top of the rectifying tower is also sequentially connected with a circulating water primary condenser and an ethylene glycol secondary condenser through pipelines, and a reflux tank is connected below the circulating water primary condenser and the ethylene glycol secondary condenser in parallel.
Preferably, the driving motor and the driving teeth are eccentrically arranged, and the shortest distance between the center of the driving teeth and the inner wall of the conveying cavity is equal to the sum of the thicknesses of the driving teeth and the deformation ring group.
Preferably, the cross section of the groove is V-shaped, and two ends of the groove are respectively connected with the ends of the adjacent sealing strips.
Preferably, the cleaning piece comprises a one-way valve sleeve inserted into the inlet end, and a cylindrical filter screen is arranged in the inner ring of the one-way valve sleeve.
Preferably, the bottom of the air inlet pipe is connected with a nitrogen cylinder through a flow valve.
Preferably, a pressure control valve is arranged at the top of the rectifying tower.
Compared with the prior art, the invention has the beneficial effects that:
the invention arranges a partial pressure component at the top of the rectifying tower to ensure that the rectifying tower is internally provided with
1. According to the invention, the pressure dividing component is arranged at the top of the rectifying tower, and the driving teeth and the driving prismatic teeth in the pressure dividing component are meshed to move and then drive the deformation ring group to operate, so that the gas flow space is poor, the gas flow is further promoted, the small-range reduction of the top gas pressure of the rectifying tower is realized, and the problem of product rectification quality reduction caused by overlarge pressure fluctuation at the top of the rectifying tower is avoided;
2. according to the invention, the top pressure of the rectifying tower is buffered by utilizing a cavity space formed by the conveying cavity and the deformation ring group in the pressure dividing assembly, so that the top pressure of the rectifying tower is slowly changed to a set threshold value, and the problem of overlarge pressure regulating deviation is avoided;
3. according to the invention, the pressurizing assembly is arranged, the pressure of the gas in the accommodating cylinder is utilized to timely supplement the top pressure of the rectifying tower, when the pressure in the accommodating cylinder is insufficient, the gas in the nitrogen cylinder is started to be further supplemented, and in the process, the air bag is utilized to block the air flow, so that the air flow speed is reduced, and the problem of the turbulence of the top pressure of the rectifying tower caused by the excessively high pressurizing speed is avoided;
4. the whole device controls the pressure at the top of the whole rectifying tower into a micro positive pressure control system through the cooperation of the pressure dividing component and the pressurizing component, so that the adjustment of the pressure in a small range at the top of the rectifying tower is realized, the stability of the pressure at the top of the rectifying tower is ensured, and the rectifying quality of products is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of a voltage divider assembly according to the present invention;
FIG. 3 is a schematic view of the structure of the supercharging assembly of the present invention;
fig. 4 is a schematic view of the structure of the cleaning assembly of the present invention.
In the figure: 1. a rectifying tower; 2. a top pressure sensor; 3. a partial pressure box; 4. an inlet end; 5. an outlet end; 6. a conveying cavity; 7. a diversion guide groove; 8. a guide groove; 9. a drive tooth; 10. a set of deformation rings; 11. driving the edge teeth; 12. a ring sleeve; 13. a sealing strip; 14. a groove; 15. a sphere; 16. an air bag; 17. an air outlet pipe; 18. an air inlet pipe; 19. a receiving cylinder; 20. a confinement ring; 21. a piston; u-shaped tube; 23. a circulating water primary condenser; 24. a glycol secondary condenser; 25. a reflux drum; 26. a one-way valve sleeve; 27. a cylindrical filter screen; 28. and a nitrogen bottle.
Detailed Description
The invention is further described below with reference to the drawings and detailed description:
as shown in fig. 1-4, the pressure balancing device for ethyl acetate rectifying tower comprises a rectifying tower 1, wherein a pressure control valve is arranged at the top of the rectifying tower, the top of the rectifying tower 1 is connected with a positive pressure mechanism for stabilizing the internal pressure of the rectifying tower 1, the positive pressure mechanism comprises a top pressure sensor 2 for detecting the pressure at the top of the rectifying tower 1, and the other side of the top pressure sensor 2 is respectively connected with a pressure dividing component and a pressurizing component;
the pressure dividing assembly comprises a pressure dividing box 3, cleaning pieces arranged at the end part of the pressure dividing box 3 and conveying pieces arranged in the pressure dividing box 3, an inlet end 4 is arranged at the side part of the pressure dividing box 3, an outlet end 5 is arranged at the top part of the pressure dividing box, the cleaning pieces are inserted into the end part of the inlet end 4, the rear end of the cleaning pieces is communicated with a conveying cavity 6 arranged in the pressure dividing box 3, a flow dividing guide groove 7 and a flow guiding guide groove 8 which face the inlet end 4 and the outlet end 5 are respectively arranged on the outer wall of the conveying cavity 6, the flow dividing guide groove 7 extends to the bottom of the conveying cavity 6 along the end part of the inlet end 4 and gradually reduces in inner diameter, the flow guiding guide groove 8 extends to the end part of the outlet end 5 along the central shaft part of the conveying cavity 6 and gradually increases in inner diameter, the conveying pieces comprise driving teeth 9 arranged in the conveying cavity 6, a connecting shaft in the middle of the driving teeth 9 penetrates through the inner wall of the pressure dividing box 3 and is electrically connected with a driving motor, the driving motor is arranged at the back part of the pressure dividing box 3, a shape-changing ring group 10 is sleeved on the outer circumference of the driving teeth 9, a plurality of driving teeth 11 meshed with the driving teeth 11 are annularly arranged on the inner wall of the inner diameter along the circumferential direction, the inner diameter, the driving ring 11 evenly comprises driving teeth 11 and driving rings 11 are evenly meshed with the driving teeth 11, the driving ring groups are evenly distributed along the inner ring grooves 13 and 13 are respectively, the sealing strips 13 are evenly distributed along the outer ring grooves 13, 13 are respectively, and the two ends are respectively connected with the sealing strips 13, and the sealing strips are respectively formed by the sealing strips are respectively, and are respectively connected with sealing strips and 13;
the supercharging assembly comprises a ball body 15, a spherical air bag 16 is arranged inside the ball body 15, an air outlet pipe 17 is arranged at the top of the ball body 15, an air inlet pipe 18 is arranged at the bottom of the ball body, the upper part of the air outlet pipe 17 is communicated with the top of the rectifying tower 1, the lower part of the air outlet pipe is communicated with the air bag 16, a unidirectional cone thorn is arranged at the side part of the ball body 15, a containing cylinder 19 communicated with the inside of the ball body 15 is inserted into the unidirectional cone thorn, a limiting ring 20 is arranged at the joint of the containing cylinder 19 and the ball body 15, a piston 21 freely moving along the inner cavity of the containing cylinder 19 is abutted against at the end part of the limiting ring 20, and a U-shaped pipe 22 is communicated with the tail part of the containing cylinder 19. When the air pressure enters the conveying cavity 6, the outer surface of the deformation ring set 10 is pushed, so that the deformation of the deformation ring set 10 is increased, the single spiral conveying capacity is improved, the U-shaped pipe 22 visually displays whether the pressure compensation is sufficient or not, and the pressure compensation postponement caused by the fact that the pressure compensation of the nitrogen cylinder is opened after the transmission of the top pressure sensor is avoided.
In this embodiment, the top of the rectifying tower 1 is further connected with a circulating water primary condenser 23 and an ethylene glycol secondary condenser 24 in sequence through a pipeline, and a reflux tank 25 is connected in parallel below the circulating water primary condenser 23 and the ethylene glycol secondary condenser 24. The top of the rectifying tower 1 is provided with a circulating water primary condenser 23 and an ethylene glycol secondary condenser 24, so that the rectified product enters the next working procedure after being condensed, and meanwhile, part of materials are refluxed into the rectifying tower 1 through a reflux tank 25, so that the recycling of the materials is realized.
In this embodiment, the driving motor and the driving teeth 9 are eccentrically arranged, and the shortest distance between the center of the driving teeth 9 and the inner wall of the conveying cavity 6 is equal to the sum of the thicknesses of the driving teeth 9 and the deformation ring set 10.
In this embodiment, the cleaning member includes a one-way valve sleeve 26 inserted into the inlet end 4, and a cylindrical filter screen 27 is disposed in the one-way valve sleeve 26. By providing the cleaning member at the inlet end 4, the mixture carried by the gas pressure at the top of the rectifying column 1 is sufficiently filtered by the cylindrical filter screen 27, not only preventing the mixture from contaminating the subsequent equipment, but also preventing the flow of the gas flow from being hindered.
In this embodiment, the bottom of the air inlet pipe 18 is connected to a nitrogen cylinder 28 via a flow valve. Nitrogen gas cylinder 28 is used to charge a certain amount of nitrogen gas into the top of rectifying tower 1 to ensure the pressure of the top of rectifying tower 1.
When the pressure sensor 2 detects that the pressure at the top of the rectifying tower 1 exceeds a threshold value, the pressure control valve at the top of the rectifying tower 1 is opened, high-pressure air flow enters the diversion guide groove 7 from the inlet end 4, the radius of the diversion guide groove 7 gradually becomes smaller from large, the air flow gradually converges to the small-diameter end and then enters the conveying cavity 6, the outer wall of the deformation ring set 10 is pressed against, the air flow impact part of the deformation ring set 10 is recessed towards the center of a circle, the driving edge tooth 11 on the inner wall of the deformation ring set 10 is meshed with the driving tooth 9, at the moment, the driving motor is started, the driving tooth 9 rotates and drives the deformation ring set 10 to eccentrically rotate, the air flow is conveyed to the outlet end 5 by the tail end of the diversion guide groove 7 and then is discharged, the diversion guide groove 8 rotates to the inlet end 4, and the outer wall of the diversion guide groove 8 is opposite to the inlet end 4, so that the air flow is blocked, the detention air flow velocity in the pipeline after the pressure control valve at the top of the rectifying tower 1 is closed, the balance air pressure is formed, and the air pressure is balanced with the outside pressure is avoided;
when the top gas pressure of the rectifying tower 1 is lower than a threshold value, a piston 21 in a containing cylinder 19 is affected by unbalanced gas pressure on two sides and gradually slides to the front end of the containing cylinder 19, so that a one-way cone on the side part of a sphere 15 pierces the piston 21, gas at the rear end of the containing cylinder 19 outside the piston 21 enters the sphere 15, enters the top of the rectifying tower 1 from a gap between an air bag 16 and the sphere 15 to carry out small-range pressure compensation, small-range pressure compensation of the rectifying tower 1 is realized, a buffer foundation is provided for large-range pressure compensation, and when mercury in a U-shaped pipe 22 reaches a limited column difference, a nitrogen cylinder 28 is opened to supplement large-range gas pressure for the top of the rectifying tower 1;
the whole device realizes that the pressure at the top of the rectifying tower 1 is under the control system of micro positive pressure, regulates the fluctuation of the pressure in a small range, and improves the rectifying effect of the product.
In summary, the present invention is not limited to the preferred embodiments, but includes all equivalent changes and modifications in shape, construction, characteristics and spirit according to the scope of the claims.
Claims (7)
1. The utility model provides an ethyl acetate pressure balance device for rectifying column, includes rectifying column, its characterized in that: the top of the rectifying tower is connected with a positive pressure mechanism for stabilizing the internal pressure of the rectifying tower, the positive pressure mechanism comprises a top pressure sensor for detecting the top pressure of the rectifying tower, and the other side of the top pressure sensor is respectively connected with a pressure dividing component and a pressure boosting component;
the pressure dividing assembly comprises a pressure dividing box, a cleaning piece arranged at the end part of the pressure dividing box and a conveying piece arranged in the pressure dividing box, wherein an inlet end is arranged at the side part of the pressure dividing box, an outlet end is arranged at the top of the pressure dividing box, the cleaning piece is inserted into the end part of the inlet end, the rear end of the cleaning piece is communicated with a conveying cavity arranged in the pressure dividing box, a diversion guide groove and a diversion guide groove facing the inlet end and the outlet end are respectively arranged on the outer wall of the conveying cavity, the diversion guide groove extends to the bottom of the conveying cavity along the end port and gradually reduces in inner diameter, the diversion guide groove extends to the end port along the central shaft part of the conveying cavity and gradually increases in inner diameter, the conveying piece comprises driving teeth arranged in the conveying cavity, a connecting shaft in the middle of the driving teeth penetrates through the inner wall of the pressure dividing box and is electrically connected with a driving motor, the driving motor is arranged at the back of the pressure dividing box, a deformation ring set is circumferentially sleeved on the periphery of the driving teeth, a plurality of driving edge teeth meshed with the driving edge sealing strips are circumferentially arranged on the inner wall of the deformation ring set, the deformation ring set comprises elastic fiber ring sleeves connected with the bottoms of the driving edge teeth, and the sealing strips are uniformly distributed among the grooves uniformly along the periphery;
the supercharging assembly comprises a ball body, a spherical air bag is arranged inside the ball body, an air outlet pipe is arranged at the top of the ball body, an air inlet pipe is arranged at the bottom of the ball body, the upper portion of the air outlet pipe is communicated with the top of the rectifying tower, the lower portion of the air outlet pipe is communicated with the air bag, a unidirectional cone thorn is arranged at the side portion of the ball body, the unidirectional cone thorn is inserted into a containing cylinder communicated with the inside of the ball body, a limiting ring is arranged at the joint of the containing cylinder and the ball body, the end portion of the limiting ring is abutted against a piston capable of freely moving along the inner cavity of the containing cylinder, and a U-shaped pipe is communicated with the tail portion of the containing cylinder.
2. The pressure balancing device for ethyl acetate rectifying column according to claim 1, characterized in that: the top of the rectifying tower is also sequentially connected with a circulating water primary condenser and an ethylene glycol secondary condenser through pipelines, and a reflux tank is connected below the circulating water primary condenser and the ethylene glycol secondary condenser in parallel.
3. The pressure balancing device for ethyl acetate rectifying column according to claim 1, characterized in that: the driving motor and the driving teeth are eccentrically arranged, and the shortest distance between the center of the driving teeth and the inner wall of the conveying cavity is equal to the sum of the thicknesses of the driving teeth and the deformation ring group.
4. The pressure balancing device for ethyl acetate rectifying column according to claim 1, characterized in that: the cross section of the groove is V-shaped, and two ends of the groove are respectively connected with the end parts of the adjacent sealing strips.
5. The pressure balancing device for ethyl acetate rectifying column according to claim 1, characterized in that: the cleaning piece comprises a one-way valve sleeve inserted into the inlet end, and a cylindrical filter screen is arranged in the inner ring of the one-way valve sleeve.
6. The pressure balancing device for ethyl acetate rectifying column according to claim 1, characterized in that: the bottom of the air inlet pipe is connected with a nitrogen cylinder through a flow valve.
7. The pressure balancing device for ethyl acetate rectifying column according to claim 1, characterized in that: and a pressure control valve is arranged at the top of the rectifying tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210718569.6A CN115155089B (en) | 2022-06-23 | 2022-06-23 | Pressure balancing device for ethyl acetate rectifying tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210718569.6A CN115155089B (en) | 2022-06-23 | 2022-06-23 | Pressure balancing device for ethyl acetate rectifying tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115155089A CN115155089A (en) | 2022-10-11 |
| CN115155089B true CN115155089B (en) | 2024-01-05 |
Family
ID=83488101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210718569.6A Active CN115155089B (en) | 2022-06-23 | 2022-06-23 | Pressure balancing device for ethyl acetate rectifying tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115155089B (en) |
Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1413866A (en) * | 1973-06-22 | 1975-11-12 | Clerk R C | Piston pumps or motors |
| JP2006038725A (en) * | 2004-07-29 | 2006-02-09 | Meteorological Agency | Balloon releasing system |
| CN201657704U (en) * | 2010-02-04 | 2010-12-01 | 徐静静 | Oxygen-increasing machine with air pressure switch |
| CN202302714U (en) * | 2011-10-26 | 2012-07-04 | 中国石油化工股份有限公司 | Automatic pressure relief device of low pressure tank |
| CN203034538U (en) * | 2013-01-01 | 2013-07-03 | 青岛源晟换热设备有限公司 | Novel non-negative pressure water supply device |
| CN203223429U (en) * | 2013-05-10 | 2013-10-02 | 刘建阳 | Air bag type energy accumulator auxiliary pressure regulating device |
| CN204310507U (en) * | 2014-12-15 | 2015-05-06 | 中冶赛迪工程技术股份有限公司 | A kind of air-transport system making-up air device |
| CN105344127A (en) * | 2015-11-30 | 2016-02-24 | 新疆大全新能源有限公司 | Rectifying tower system and method and device for stabilizing pressure of rectifying tower |
| CN206152379U (en) * | 2016-11-01 | 2017-05-10 | 上海其福青材料科技有限公司 | Top of tower steady voltage rectifying column |
| CN106843310A (en) * | 2017-03-20 | 2017-06-13 | 南京师范大学 | A kind of 0 DEG C of signal generator and its implementation |
| CN106989274A (en) * | 2017-03-17 | 2017-07-28 | 泸溪县金源粉体材料有限责任公司 | A kind of air pressure balance tank automatic air replenishing system |
| CN107167398A (en) * | 2017-07-21 | 2017-09-15 | 曹元昊 | A kind of device and its measuring method for measuring Ratio of Specific Heats of Air |
| KR200485857Y1 (en) * | 2017-08-23 | 2018-03-06 | 선우윤 | Apparatus for injecting air to balloon |
| CN108302025A (en) * | 2018-01-09 | 2018-07-20 | 上海绩优机电股份有限公司 | With the multistage eccentric driven pump for adjusting range |
| CN208470643U (en) * | 2018-04-03 | 2019-02-05 | 无锡东盛石化装备有限公司 | Oil storage tank with pressure control device |
| CN111271491A (en) * | 2020-03-10 | 2020-06-12 | 深圳市绿航星际太空科技研究院 | One-way valve and high-pressure gas filling structure |
| CN213892788U (en) * | 2020-10-12 | 2021-08-06 | 杭州勇华车业有限公司 | Automatic cleaning pedal |
| CN113251016A (en) * | 2021-06-04 | 2021-08-13 | 宁波九龙机械制造有限公司 | Pressure action balance mechanism |
| CN215691746U (en) * | 2021-08-16 | 2022-02-01 | 兖矿科蓝凯美特化工有限公司 | Equipment for accurately regulating and controlling vacuum degree of distillation tower |
| CN114226907A (en) * | 2022-02-23 | 2022-03-25 | 飞荣达科技(江苏)有限公司 | Soldering flux fluid pressure control device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT381377B (en) * | 1985-03-14 | 1986-10-10 | Eder Anton Gmbh | PRESSURE COMPENSATING DEVICE FOR HEATING SYSTEMS OD. DGL. |
-
2022
- 2022-06-23 CN CN202210718569.6A patent/CN115155089B/en active Active
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1413866A (en) * | 1973-06-22 | 1975-11-12 | Clerk R C | Piston pumps or motors |
| JP2006038725A (en) * | 2004-07-29 | 2006-02-09 | Meteorological Agency | Balloon releasing system |
| CN201657704U (en) * | 2010-02-04 | 2010-12-01 | 徐静静 | Oxygen-increasing machine with air pressure switch |
| CN202302714U (en) * | 2011-10-26 | 2012-07-04 | 中国石油化工股份有限公司 | Automatic pressure relief device of low pressure tank |
| CN203034538U (en) * | 2013-01-01 | 2013-07-03 | 青岛源晟换热设备有限公司 | Novel non-negative pressure water supply device |
| CN203223429U (en) * | 2013-05-10 | 2013-10-02 | 刘建阳 | Air bag type energy accumulator auxiliary pressure regulating device |
| CN204310507U (en) * | 2014-12-15 | 2015-05-06 | 中冶赛迪工程技术股份有限公司 | A kind of air-transport system making-up air device |
| CN105344127A (en) * | 2015-11-30 | 2016-02-24 | 新疆大全新能源有限公司 | Rectifying tower system and method and device for stabilizing pressure of rectifying tower |
| CN206152379U (en) * | 2016-11-01 | 2017-05-10 | 上海其福青材料科技有限公司 | Top of tower steady voltage rectifying column |
| CN106989274A (en) * | 2017-03-17 | 2017-07-28 | 泸溪县金源粉体材料有限责任公司 | A kind of air pressure balance tank automatic air replenishing system |
| CN106843310A (en) * | 2017-03-20 | 2017-06-13 | 南京师范大学 | A kind of 0 DEG C of signal generator and its implementation |
| CN107167398A (en) * | 2017-07-21 | 2017-09-15 | 曹元昊 | A kind of device and its measuring method for measuring Ratio of Specific Heats of Air |
| KR200485857Y1 (en) * | 2017-08-23 | 2018-03-06 | 선우윤 | Apparatus for injecting air to balloon |
| CN108302025A (en) * | 2018-01-09 | 2018-07-20 | 上海绩优机电股份有限公司 | With the multistage eccentric driven pump for adjusting range |
| CN208470643U (en) * | 2018-04-03 | 2019-02-05 | 无锡东盛石化装备有限公司 | Oil storage tank with pressure control device |
| CN111271491A (en) * | 2020-03-10 | 2020-06-12 | 深圳市绿航星际太空科技研究院 | One-way valve and high-pressure gas filling structure |
| CN213892788U (en) * | 2020-10-12 | 2021-08-06 | 杭州勇华车业有限公司 | Automatic cleaning pedal |
| CN113251016A (en) * | 2021-06-04 | 2021-08-13 | 宁波九龙机械制造有限公司 | Pressure action balance mechanism |
| CN215691746U (en) * | 2021-08-16 | 2022-02-01 | 兖矿科蓝凯美特化工有限公司 | Equipment for accurately regulating and controlling vacuum degree of distillation tower |
| CN114226907A (en) * | 2022-02-23 | 2022-03-25 | 飞荣达科技(江苏)有限公司 | Soldering flux fluid pressure control device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115155089A (en) | 2022-10-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203685582U (en) | Oil-gas separator of variable pressure oil-injecting screw compressor | |
| CN115155089B (en) | Pressure balancing device for ethyl acetate rectifying tower | |
| CN110645387A (en) | High-lift differential pressure unpowered pump air valve | |
| CN107166066A (en) | The non-return valve and liquid oxygenation induction system of a kind of liquid oxygenation induction system | |
| CN205182209U (en) | Low temperature evaporation plant of centrifugation of multilayer disk type and gravity film forming and differential decompression | |
| CN109869111A (en) | Following deflection-regulation polished rod seal and liquid drive blowout prevention integrated apparatus | |
| CN1034478C (en) | Spiral liquid circulation liquid-solid separator | |
| CN102797707B (en) | Pneumatic lift pump and pneumatic lift pump set | |
| CN108488474A (en) | A kind of valve being adjustably controlled flow | |
| CN209714376U (en) | A kind of oil field development tubular type degasser | |
| CN210424991U (en) | Energy-saving full-mechanical automatic adjusting discharger | |
| CN218281803U (en) | Quantitative dropper suitable for immunochromatography detection reagent | |
| CN106762502A (en) | A kind of universal plunger displacement pump of profit | |
| CN104358905B (en) | A kind of flow automatic control device | |
| CN113323646B (en) | High-pressure buffering sand separation device for wellhead of compact gas well | |
| CN212204033U (en) | Underflow device of ore pulp thickener convenient for rapid flowing of ore pulp | |
| CN208703193U (en) | Built-in check valve | |
| CN209430289U (en) | A kind of aero-engine gas and oil separating plant | |
| CN105251227A (en) | Multilayer disc type centrifugation and gravity film forming and differential speed pressure reduction low-temperature evaporation device | |
| CN206751750U (en) | A kind of oil well associated gas automatic purification device | |
| CN108751109A (en) | A kind of liquid quantitative feeding device | |
| CN206036329U (en) | Investigation mission outside city or town fluid constant pressure valve | |
| CN216009667U (en) | Exhaust valve for medicine discharge pump | |
| CN110307152A (en) | A kind of diaphragm seal valve type gas-liquid delivery system and pumping method | |
| CN208503953U (en) | Constant pressure conveying device and constant pressure conveying system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |