CN112675563B - Gas phase regulating unit for a dividing wall column and dividing wall column comprising a gas phase regulating unit - Google Patents
Gas phase regulating unit for a dividing wall column and dividing wall column comprising a gas phase regulating unit Download PDFInfo
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- CN112675563B CN112675563B CN201910995173.4A CN201910995173A CN112675563B CN 112675563 B CN112675563 B CN 112675563B CN 201910995173 A CN201910995173 A CN 201910995173A CN 112675563 B CN112675563 B CN 112675563B
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- dividing wall
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Abstract
The invention relates to the technical field of rectifying towers, and discloses a gas phase adjusting unit for a partition wall tower and the partition wall tower comprising the same, wherein the partition wall tower comprises a tower wall (13), a partition wall (12), a liquid holding plate (11) and a flow regulator (7), the upper surface of at least one liquid holding plate (11) is provided with the gas phase adjusting unit, the gas phase adjusting unit comprises a gas rising cylinder (8), an adjuster (1) and a buoyancy tank (3), the gas rising cylinder (8) is of a hollow structure, a gas phase channel (2) is arranged in the adjuster (1), the adjuster (1) is embedded in the gas rising cylinder (8), the buoyancy tank (3) is arranged outside the gas rising cylinder (8), and the buoyancy tank (3) is connected with the adjuster (1) to form an integral structure. The invention can realize that the gas phase proportion of the pre-separation area and the lateral line rectification area of the dividing wall tower is adjusted corresponding to the liquid phase proportion.
Description
Technical Field
The invention relates to the technical field of rectifying towers, in particular to a gas phase regulating unit for a bulkhead tower and the bulkhead tower containing the gas phase regulating unit.
Background
The dividing wall tower is characterized in that a vertical dividing wall is inserted into a common rectifying tower, and the rectifying tower is divided into a common rectifying section, a pre-separation section, a lateral line rectifying section and a common stripping section, wherein one side of the dividing wall for feeding is called the pre-separation section, and one side of the dividing wall for lateral line extraction is called the lateral line rectifying section.
Assuming that the boiling point of A, B, C increases in sequence, ideally, the pre-separation zone separates A and C, the feed from the pre-separation zone to the common rectification section contains mainly A and B and almost no C, and the feed from the pre-separation zone to the common stripping section contains mainly B and C and almost no A. The public rectification section mainly separates A and B, so that the tower top obtains A with extremely high purity. B and a very small amount of C enter a side rectification zone. The public stripping section mainly separates B and C, so that C with extremely high purity is obtained at the bottom of the tower. B and a very small amount of A enter a side rectification zone. The side-stream rectification zone extracts B with higher purity, and a very small amount of A and C are separated to the top and the bottom of the tower. Thus, only one rectifying tower is needed to obtain A, B, C with extremely high purity, one rectifying tower, one condenser, one reboiler and other auxiliary facilities are saved, and the occupied area of the equipment is reduced.
Generally, the equipment investment and the energy consumption of the dividing wall tower are reduced by about 30 percent.
The liquid from the common rectification section can be relatively simply distributed into the pre-separation section and the side-line rectification section, and the gas phase from the common stripping section is not provided with a specific distribution structure, so that the gas phase ratio between the pre-separation section and the side-line rectification section cannot be intentionally distributed in a specific ratio, which results in that the gas phase ratio between the pre-separation section and the side-line rectification section of the dividing wall column cannot be adjusted corresponding to the liquid phase ratio.
Disclosure of Invention
The invention aims to solve the problem that the gas phase proportion of a pre-separation area and a side rectification area in a dividing wall tower is difficult to adjust.
In order to achieve the above object, a first aspect of the present invention provides a gas phase conditioning unit for a dividing wall column, the gas phase conditioning unit comprising a gas-lifting cylinder, a conditioner and a buoyancy tank, the gas-lifting cylinder being of a hollow structure, the buoyancy tank being of a hollow sealed structure, the conditioner being provided with at least one gas phase channel therein, the conditioner being nested inside the gas-lifting cylinder, the buoyancy tank being provided outside the gas-lifting cylinder and connected to the conditioner to form an integral structure, an opening of the gas phase channel being provided at a side of the conditioner, the conditioner being capable of adjusting an opening area of the gas phase channel as the buoyancy tank is lifted.
The invention does not require any particular shape for the nested arrangement of the inflator and the regulator, so that the aforementioned objects of the invention can be achieved by facilitating the manufacture and matching of the remaining features of the invention. Preferably, the cross section of the gas cylinder and the adjuster in the nested arrangement is selected from at least one of a regular polygon, a circle, an ellipse and an irregular shape.
Likewise, the invention does not require a particular shape for the buoyancy tank, so as to facilitate the processing and matching of the remaining features of the invention to achieve the aforementioned objects of the invention. Preferably, the cross section of the buoyancy tank is selected from any one of a regular polygon, a circle, an ellipse and an irregular shape.
Preferably, the opening of the gas phase channel is at least one of a long strip shape, a round hole, an elliptical hole, a regular polygonal hole and an irregular shape.
The second aspect of the present invention provides a dividing wall column comprising a gas phase regulating unit, the dividing wall column comprising a column wall, a dividing wall, liquid holding plates, and a flow rate regulator, wherein the gas phase regulating unit is arranged on the upper surface of at least one of the liquid holding plates, the gas phase regulating unit is the gas phase regulating unit according to the first aspect of the present invention,
the flow regulator can regulate the liquid level height on the liquid holding plate through a pipeline; the buoyancy tank in the gas phase regulating unit can regulate the relative height of the buoyancy tank in the partition wall tower according to the liquid level on the liquid holding plate.
More specifically, the gas phase adjusting unit comprises a gas raising cylinder, an adjuster and a floating box, the gas raising cylinder is of a hollow structure, the floating box is of a hollow sealing structure, at least one gas phase channel is arranged in the adjuster, the adjuster is embedded in the gas raising cylinder, the floating box is arranged outside the gas raising cylinder and connected with the adjuster to form an integral structure, the opening of the gas phase channel is arranged on the side surface of the adjuster, the floating box can adjust the relative height of the floating box in the partition wall tower according to the liquid level on the liquid holding plate, and the adjuster can adjust the opening area of the gas phase channel according to the height of the floating box; the flow regulator can regulate the liquid level height on the liquid holding plate through a pipeline.
Particularly preferably, the number of the gas phase conditioning units in the divided wall column is at least one. That is, the regulator, the buoyancy tank and the gas lift cylinder can be one or more so as to adapt to the conditions of different tower diameters.
Preferably, the flow regulator forms a control loop through a pressure difference caused by the liquid level difference and/or the liquid column height so as to regulate the liquid level height on the liquid holding plate. And a control signal of the pressure difference caused by the liquid level difference and/or the height of the liquid column is transmitted back to the flow regulator, and the liquid phase is controlled to flow to the liquid distributor.
Preferably, the dividing wall column also contains a gas phase distributor capable of introducing the gas phase from the gas phase conditioning unit to the upper tray.
Preferably, the dividing wall divides the inner space formed by the column wall into a pre-separation zone and a side-rectification zone.
Particularly preferably, the gas phase conditioning unit is arranged in the pre-separation zone.
Preferably, the dividing wall tower also comprises a downcomer, and a space formed by the downcomer and the tower wall forms a downcomer.
Preferably, the lowest position of the liquid descending plate is lower than the liquid level on the liquid holding plate to form a liquid seal.
By means of the dividing wall column according to the invention, the liquid phase stream forms a certain level on the liquid-holding plate, and the level on the liquid-holding plate can be adjusted by means of a control circuit.
The regulator in the gas phase regulating unit is integrated with the buoyancy tank and can be suspended on the liquid surface through buoyancy.
In the dividing wall tower, gas phase can pass through the gas phase channel on the regulator from the gas lift cylinder upwards, and due to the blockage of the gas lift cylinder, the area of the gas phase channel is different when the liquid level is different. The gas phase preferably passes through a gas phase distributor into the upper tray or packing and the liquid phase is distributed via a regulator through a liquid phase distributor to the lower tray or packing.
The dividing wall of the present invention may be disposed at a diameter position of the dividing wall column, or may be disposed at a non-diameter position of the dividing wall column according to actual production requirements, and the present invention is not particularly limited thereto.
Particularly preferably, the gas phase conditioning unit according to the invention is arranged at the very bottom of the predissociation zone and the side rectification zone with dividing wall, and then down to the stripping section of the dividing wall column.
In the prior art, when the dividing wall is at the diameter of the dividing wall column and there is no gas phase ratio regulating system, the initial gas phase flow into the pre-separation zone and the side rectification zone is the same, and the pressure is also the same. And the tops of the pre-separation zone and the side-rectification zone are connected with the rectification zone, so that the pressure at the tops is also the same. The gas phase then passes through a predissociation zone and a side rectification zone, the pressure drop across which is also the same.
The invention changes the size of the gas phase channel of the pre-separation area and the side line rectification area to cause different pressure drops, and in order to make the pressure drops the same, the gas phase can automatically reduce the flow on the side with the larger pressure drop, thereby realizing the purpose of adjusting the gas phase flow.
That is, the present invention can realize that the gas phase ratio of the preliminary separation zone and the side rectification zone of the dividing wall column is adjusted corresponding to the liquid phase ratio.
Drawings
FIG. 1 is a schematic sectional view of a regulator and a lift cylinder of a gas phase conditioning unit;
FIG. 2 is a schematic view of a gas phase conditioning unit with a circular cross-section of the conditioner and the lift cylinder
FIG. 3 is a schematic diagram of the structure of a divided wall column containing a gas phase conditioning unit according to a preferred embodiment of the present invention.
Description of the reference numerals
1 regulator 2 gas phase channel
3 buoyancy tank 4 gas phase distributor
5 downcomer of 6 upper tower plates
7. 7' flow regulator 8 lift cylinder
9 liquid phase distributor 10, 10' control loop
11 liquid-holding plate 12 partition wall
13 tower wall 14 down-flow plate
Detailed Description
The endpoints of the ranges and any values disclosed herein are not limited to the precise range or value, and such ranges or values should be understood to encompass values close to those ranges or values. For ranges of values, between the endpoints of each of the ranges and the individual points, and between the individual points may be combined with each other to give one or more new ranges of values, and these ranges of values should be considered as specifically disclosed herein.
Preferred embodiments of the dividing wall column containing a gas phase conditioning unit according to the invention are described in detail below with reference to the structures shown in fig. 1, 2 and 3.
Contain gas-lift cylinder 8, regulator 1 and flotation tank 3 in the gaseous phase regulating unit, gas-lift cylinder 8 is hollow structure, flotation tank 3 is hollow seal structure, be provided with at least one gaseous phase passageway 2 in the regulator 1, regulator 1 inlays the setting and is in the inside of gas-lift cylinder 8, flotation tank 3 sets up the outside of gas-lift cylinder 8, just flotation tank 3 with regulator 1 is connected in order to form a body structure, the opening setting of gaseous phase passageway 2 is in the side of regulator 1, regulator 1 can be along with the lift of flotation tank 3 is adjusted the opening area of gaseous phase passageway 2.
Preferably, the cross section of the gas lift cylinder 8 and the regulator 1 in the nested arrangement is selected from at least one of a regular polygon, a circle, an ellipse and an irregular shape.
Preferably, the cross section of the buoyancy tank 3 is selected from any one of a regular polygon, a circle, an ellipse and an irregular shape.
Said fig. 1 and said fig. 2 of the present invention show the preferred case where the cross section of the regulator and the lift cylinder of the gas phase conditioning unit is square and the preferred case where the cross section of the regulator and the lift cylinder of the gas phase conditioning unit is circular, respectively.
Preferably, the opening of the gas phase channel 4 is at least one of a long strip shape (as shown in fig. 1), a round hole (as shown in fig. 2), an elliptical hole, a regular polygonal hole and an irregular shape.
The gas phase conditioning unit according to the invention is preferably fixed to the liquid-holding plate 11 of the dividing wall column.
On the other hand, the dividing wall tower of the invention comprises a tower wall 13, a dividing wall 12, liquid holding plates 11 and a flow regulator 7, wherein the upper surface of at least one liquid holding plate 11 is provided with a gas phase regulating unit,
the gas phase adjusting unit comprises a gas rising cylinder 8, an adjuster 1 and a floating box 3, wherein the gas rising cylinder 8 is of a hollow structure, the floating box 3 is of a hollow sealing structure, at least one gas phase channel 2 is arranged in the adjuster 1, the adjuster 1 is embedded in the gas rising cylinder 8, the floating box 3 is arranged outside the gas rising cylinder 8, the floating box 3 is connected with the adjuster 1 to form an integral structure, the opening of the gas phase channel 2 is arranged on the side surface of the adjuster 1, the floating box 3 can adjust the relative height of the floating box 3 in the partition tower along with the liquid level on the liquid holding plate 11, and the adjuster 1 can adjust the opening area of the gas phase channel 2 along with the height of the floating box 3; the flow regulator 7 can regulate the liquid level height on the liquid holding plate 11 through a pipeline.
Preferably, the flow regulator 7 forms a control loop 10 to regulate the liquid level height on the liquid holding plate 11 by means of a pressure difference caused by the liquid level difference and/or the liquid column height.
The number of the flow regulators may be plural, and for example, the flow regulator 7' may be included.
Preferably, the dividing wall column also contains a gas phase distributor 4 capable of introducing the gas phase from the gas phase conditioning unit to the upper tray 5.
Preferably, the dividing wall 12 divides the inner space formed by the column wall 13 into a predissociation zone and a side rectification zone.
Preferably, the dividing wall tower also comprises a downcomer 14, and a space formed by the downcomer 14 and the tower wall 13 forms a downcomer 6.
A preferred embodiment of a dividing wall column comprising a gas phase conditioning unit to which the present invention is applied is described below with reference to FIG. 3:
the liquid phase from the upper tower plate 5 or the filler falls onto the liquid holding plate 11 through the downcomer 6 to form a certain liquid level, and the liquid level height exceeds the lowest position of the downcomer 14. The liquid phase is pumped or regulated to a liquid phase distributor 9 and redistributed to the lower tray or packing. The gas phase goes upward from the lower tower plate or the packing, passes through the gas lift cylinder 8, passes through the gas phase channel 2 on the regulator 1, and enters the upper tower plate 5 or the packing through the gas phase distributor 4.
When the gas phase flow on one side needs to be increased, the opening area of the gas phase channel 2 on the regulator 1 is larger, and a few gas cylinders 8 block the opening area, so that the regulator 1 and the buoyancy tank 3 rise, the pressure drop is reduced, the opening area of the gas phase channel 2 is increased, and the gas phase flow is increased under the pressure balance. For this purpose, the liquid level on the liquid-holding plate 11 needs to be raised, and the flow of the pump or the regulating valve is reduced by the flow regulator 7.
When the gas phase flow on one side needs to be reduced, the opening area of the gas phase channel 2 on the regulator 1 is smaller, most of the gas phase is blocked by the gas rising cylinder 8, the regulator 1 and the buoyancy tank 3 are shown to descend, the pressure drop is increased, the opening area of the gas phase channel 2 is reduced, and the gas phase flow under the pressure balance is reduced. For this purpose, the liquid level on the liquid-holding plate 11 needs to be lowered, and the flow of the pump or the regulating valve is increased by the flow regulator 7.
To form the control loops 10, 10 ', part of the circuit control units are shown in FIG. 3 of the present invention by way of example, FIC-101 represents the gas phase flow on the left side of the dividing wall column, FIC-102 represents the gas phase flow on the right side of the dividing wall column, PT-101 represents the pressure on the left side of the dividing wall column above the gas phase distributor 4, PT-102 represents the left side of the dividing wall column above the flow regulator 7 line pressure, PT-103 represents the pressure on the right side of the dividing wall column above the gas phase distributor 4, PT-104 represents the right side of the dividing wall column above the flow regulator 7' line pressure, FDC-101 represents the pressure differential between PT-101 and PT-102, and FDC-102 represents the pressure differential between PT-103 and PT-104.
The present invention will be described in detail below by way of examples.
The following parameters of the dividing wall column were used: the column diameter of the divided wall column was 600mm, the height of the divided wall from the upper tray 5 to the liquid phase distributor 9 was about 1000mm at a position in the middle of the divided wall column.
Example 1
Using the structure (or process) shown in fig. 1 and 3.
Due to upstream feed fluctuations, the gas phase flow to the left of the dividing wall needs to be increased by 10% to meet the separation requirements of the dividing wall column.
t 0 FIC-101 at time point reads 500m 3 The reading number of PDC-101 is 1000 Pa; FIC-102 reading 500m 3 H, the reading number of PDC-102 is 1000 Pa; the left gas phase passage exceeds the gas lift cylinder by 10cm, and the right gas phase passage exceeds the gas lift cylinder by 10 cm.
At this time, the flow rate of the flow regulator (in this case, the regulating pump) needs to be slowly reduced, the reading of the left flowmeter FIC-101 is observed, and when the reading of the FIC-101 reaches 550m 3 And at the time of/h, maintaining for 10 minutes, and starting the cascade control of the FIC-101 and the PDC-101. At this time, the PDC-101 reading is 970Pa, and the FIC-102 reading is 500m 3 H, the reading number of PDC-102 is 1000 Pa; the left gas phase passage exceeds the gas lift cylinder by 10.3cm, and the right gas phase passage exceeds the gas lift cylinder by 10 cm.
Example 2
Using the structure (or process) shown in fig. 1 and 3.
Due to upstream feed fluctuations, the gas phase flow on the left side of the dividing wall needs to be reduced by 20% to meet the separation requirements of the dividing wall column.
t 0 FIC-101 at time point reads 500m 3 The reading number of PDC-101 is 1000 Pa; FIC-102 reading 500m 3 H, the reading number of PDC-102 is 1000 Pa; the left gas phase passage exceeds the gas lift cylinder by 10cm, and the right gas phase passage exceeds the gas lift cylinder by 10 cm.
At this time, the flow rate of the flow regulator (in this case, the regulating pump) needs to be slowly increased, the reading of the FIC-101 of the left-side flowmeter is observed, and when the reading of the FIC-101 reaches 400m 3 And at the time of/h, maintaining for 10 minutes, and starting the cascade control of the FIC-101 and the PDC-101. At this time, the PDC-101 reading is 1050Pa, and the FIC-102 reading is 500m 3 H, the reading number of PDC-102 is 1000 Pa; the gas phase passage on the left side exceeds the gas lift cylinder by 9.5cm, and the gas phase passage on the right side exceeds the gas lift cylinder by 10 cm.
Example 3
Using the structure (or process) shown in fig. 2 and 3.
Due to upstream feed fluctuations, the gas phase flow to the right of the dividing wall needs to be increased by 30% to meet the separation requirements of the dividing wall column.
t 0 FIC-101 at time point reads 500m 3 The reading number of PDC-101 is 1000 Pa; FIC-102 reading 500m 3 H, the reading number of PDC-102 is 1000 Pa; the left gas phase passage exceeds the gas lift cylinder by 10cm, and the right gas phase passage exceeds the gas lift cylinder by 10 cm.
At this time, the flow of the flow regulator (the regulating valve at this time) needs to be slowly reduced, the reading of the right-side flowmeter FIC-102 is observed, and when the reading of the FIC-102 reaches 650m 3 At the time of/h, the control of the cascade of the FIC-102 and the PDC-102 was started after 10 minutes. At this time, the PDC-102 reading is 915Pa, and the FIC-101 reading is 500m 3 The reading number of PDC-101 is 1000 Pa; the left gas phase passage exceeds the gas lift cylinder by 10.7cm, and the right gas phase passage exceeds the gas lift cylinder by 10 cm.
From the above results, it can be seen that: the device of the invention can quantitatively adjust the gas phase flow on both sides of the partition wall of the dividing wall tower.
However, the conventional dividing wall column has no gas phase flow rate distribution system, and when the upstream raw material fluctuates, it is impossible to change the gas phase flow rate on both sides of the dividing wall. Therefore, the conventional dividing wall column has limited operational flexibility and cannot cope with the case where the fluctuation of the raw material is large. The general solution is that the product line has a secondary line for remilling, but the treatment capacity of the partition wall tower is reduced, and the energy consumption of the product is increased.
The preferred embodiments of the present invention have been described above in detail, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications can be made to the technical solution of the invention, including combinations of various technical features in any other suitable way, and these simple modifications and combinations should also be regarded as the disclosure of the invention, and all fall within the scope of the invention.
Claims (10)
1. A gas phase regulating unit for a dividing wall column, characterized in that the gas phase regulating unit comprises a gas lift cylinder (8), a regulator (1) and a buoyancy tank (3), the gas lift cylinder (8) is of a hollow structure, the buoyancy tank (3) is of a hollow sealing structure, at least one gas phase channel (2) is arranged in the regulator (1), the regulator (1) is nested in the gas lift cylinder (8), the buoyancy tank (3) is arranged outside the gas lift cylinder (8), the buoyancy tank (3) is connected with the regulator (1) to form an integral structure, an opening of the gas phase channel (2) is arranged at the side of the regulator (1), the gas phase regulating unit is arranged on the upper surface of a liquid holding plate (11) in the dividing wall column, the buoyancy tank (3) can regulate the relative height of the buoyancy tank (3) in the dividing wall column along with the liquid level on the liquid holding plate (11), the regulator (1) can regulate the opening area of the gas phase channel (2) along with the lifting of the floating box (3).
2. Gas phase conditioning unit according to claim 1, characterized in that the cross section of the nested arrangement of the gas lift cylinder (8) and the conditioner (1) is selected from at least one of regular polygon, circle, ellipse, irregular shape.
3. The gas phase conditioning unit of claim 1, wherein the buoyancy tank has a cross-section selected from any one of a regular polygon, a circle, an ellipse, and an irregular shape.
4. The gas phase conditioning unit of any of claims 1 to 3, wherein the opening of the gas phase channel is at least one of a long strip, a round hole, an elliptical hole, a regular polygonal hole, and an irregular shape.
5. A dividing wall tower containing gas phase regulating units, which is characterized in that the dividing wall tower contains a tower wall (13), a dividing wall (12), liquid holding plates (11) and a flow regulator (7), wherein the upper surface of at least one liquid holding plate (11) is provided with the gas phase regulating units, and the gas phase regulating units are the gas phase regulating units in any one of claims 1-4,
the flow regulator (7) can regulate the liquid level height on the liquid holding plate (11) through a pipeline.
6. The dividing wall column according to claim 5, wherein the flow regulator (7) forms a control circuit (10) to regulate the liquid level height on the liquid holding plate (11) by means of a pressure difference caused by the liquid level difference and/or the liquid column height.
7. The dividing wall column according to claim 5 or 6, wherein the dividing wall column further comprises a gas phase distributor (4) which is capable of introducing the gas phase from the gas phase conditioning unit to the upper tray (5).
8. The dividing wall column according to claim 5 or 6, wherein the dividing wall (12) divides the inner space formed by the column wall (13) into a predissociation zone and a side rectification zone.
9. The dividing wall column according to claim 8, wherein the gas phase conditioning unit is provided in the pre-separation zone.
10. A dividing wall column according to claim 5 or 6, characterized in that it further comprises a downcomer (14), the space formed by the downcomer (14) and the column wall (13) constituting the downcomer (6).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910995173.4A CN112675563B (en) | 2019-10-18 | 2019-10-18 | Gas phase regulating unit for a dividing wall column and dividing wall column comprising a gas phase regulating unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910995173.4A CN112675563B (en) | 2019-10-18 | 2019-10-18 | Gas phase regulating unit for a dividing wall column and dividing wall column comprising a gas phase regulating unit |
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| CN112675563A CN112675563A (en) | 2021-04-20 |
| CN112675563B true CN112675563B (en) | 2022-08-09 |
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| JPH09243004A (en) * | 1996-03-06 | 1997-09-16 | Ishikawajima Harima Heavy Ind Co Ltd | Tower boiler |
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| CN103691144A (en) * | 2013-12-12 | 2014-04-02 | 河北工业大学 | Gas regulating and allocating device in baffle tower |
| CN106310696A (en) * | 2016-10-31 | 2017-01-11 | 河北工业大学 | Gas phase distribution device of baffle plate tower |
| CN206221694U (en) * | 2016-12-06 | 2017-06-06 | 姜骅 | The automatic exhaust steam valve that a kind of collar slidingtype is opened and closed |
| CN108136273A (en) * | 2016-05-16 | 2018-06-08 | 贝尼特M有限公司 | Distribution device in gas-fluid and the method for adjusting steam segregation ratio |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2148860Y (en) * | 1993-01-13 | 1993-12-08 | 程国民 | Liquid sealing valve |
| JP2008126225A (en) * | 2006-11-21 | 2008-06-05 | Takeshi Yoshioka | Amphibious gas-liquid separating device |
| US8562792B2 (en) * | 2010-10-28 | 2013-10-22 | Uop Llc | Vapor and liquid flow control in a dividing wall fractional distillation column |
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- 2019-10-18 CN CN201910995173.4A patent/CN112675563B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09243004A (en) * | 1996-03-06 | 1997-09-16 | Ishikawajima Harima Heavy Ind Co Ltd | Tower boiler |
| CN101218883A (en) * | 2008-01-25 | 2008-07-16 | 中国农业大学 | Case type low pressure high volume pressure regulator |
| CN103691144A (en) * | 2013-12-12 | 2014-04-02 | 河北工业大学 | Gas regulating and allocating device in baffle tower |
| CN108136273A (en) * | 2016-05-16 | 2018-06-08 | 贝尼特M有限公司 | Distribution device in gas-fluid and the method for adjusting steam segregation ratio |
| CN106310696A (en) * | 2016-10-31 | 2017-01-11 | 河北工业大学 | Gas phase distribution device of baffle plate tower |
| CN206221694U (en) * | 2016-12-06 | 2017-06-06 | 姜骅 | The automatic exhaust steam valve that a kind of collar slidingtype is opened and closed |
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| CN112675563A (en) | 2021-04-20 |
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