CN206063827U - Plate and fractionating column - Google Patents
Plate and fractionating column Download PDFInfo
- Publication number
- CN206063827U CN206063827U CN201621106181.7U CN201621106181U CN206063827U CN 206063827 U CN206063827 U CN 206063827U CN 201621106181 U CN201621106181 U CN 201621106181U CN 206063827 U CN206063827 U CN 206063827U
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- plate
- liquid
- fractionating column
- column
- fractionating
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Abstract
This utility model is that, with regard to a kind of plate and fractionating column, plate includes column plate and downflow weir, and fractionating column includes fractionating column cylinder, plate and riser, and fractionating column cylinder provides space for fractional distillation, and plate is fixed therein on wall.Plate is staggered in fractionating column cylinder；The cavity that fractionating column cylinder inboard wall and plate are formed is riser.The fractionating column that this utility model is provided, gas rises in riser, ascending path is S types, in gas uphill process, portion gas are condensed into liquid backflow, and liquid flows back in the liquid reducing hole of plate, and the gas risen along S types path runs into the liquid of condensing reflux, heat exchange is carried out with liquid, fractional distillation is completed.In liquid reflux course of the present utility model, the back-flow velocity of liquid improves fractionating efficiency more than the back-flow velocity of liquid in existing fractionating technology.
Description
Technical field
This utility model is related to a kind of plate, more particularly to a kind of efficient plate and fractionating column.
Background technology
Fractional distillation is a kind of boiling point difference of utilization liquid mixture, carries out the detached common method of liquid mixture, oil
Refining process makes the separation for carrying out various oil products in this way in a large number.Board-like fractionating column is the common separation of petrochemical enterprise
The structures such as the tower tray being interspersed in device, including fractionating column cylinder and cylinder.
Existing plate is made up of sieve tray and downspout.Mixing liquid to be separated is heated to into boiling, part
Liquid is changed into gas, and gas rises in the hole of sieve tray, to plate top, due to fractionating column upper temp it is relatively low,
Portion gas are condensed into liquid, flow back with downspout, and during gas rising, liquid decline, gas is constantly entered with liquid
Row heat exchange, equivalent to multiple distillation has been carried out, completes fractional distillation process.
But, existing fractional distillation pattern need to strictly control fractional distillation speed, and otherwise gas is not complete with the heat exchange of liquid
Entirely, fractional distillation is not thorough, affects the purity of fraction products.
Utility model content
Main purpose of the present utility model is, there is provided a kind of efficient plate and fractionating column, technology to be solved
Problem is to improve fractionating efficiency, thus more suitable for practicality.
The purpose of this utility model and solve its technical problem and employ the following technical solutions to realize.
According to the utility model proposes a kind of plate, described plate includes column plate and downflow weir, column plate
Vertical with downflow weir, the quantity for having liquid reducing hole, described liquid reducing hole on described column plate is more than 2, and described liquid reducing hole is used for liquid
The decline of body；Described downflow weir is located at column plate edge, for barrier liquid.
The purpose of this utility model and solve its technical problem and can also be applied to the following technical measures to achieve further.
Preferably, aforesaid a kind of plate, wherein described liquid reducing hole is generally circular in shape, square or linear.
Preferably, aforesaid a kind of plate, wherein 5-60% of the gross area of described liquid reducing hole for column plate area.
Preferably, aforesaid a kind of plate, wherein the height of described downflow weir is 50-350mm.
The purpose of this utility model and solve its technical problem and can also employ the following technical solutions to realize.
According to the utility model proposes a kind of fractionating column, described fractionating column include fractionating column cylinder, plate and
Riser, described fractionating column cylinder, provides space for fractional distillation, and plate is fixed therein on wall；Described plate
Including column plate and downflow weir, column plate is vertical with downflow weir, and the quantity for having liquid reducing hole, described liquid reducing hole on described column plate is more than
2, described liquid reducing hole is used for the decline of liquid, and described downflow weir is located at column plate edge, for barrier liquid；Plate with
Fractionating column cylinder forms groove structure；Plate is staggered in fractionating column cylinder；Described riser is fractional distillation tower
The cavity that wall and plate are formed in vivo, is the path of gas rising.
The purpose of this utility model and solve its technical problem and can also be applied to the following technical measures to achieve further.
Preferably, aforesaid a kind of fractionating column, wherein the area of described column plate is fractionating column cylinder inner circle cross section face
Long-pending 70-95%.
Preferably, aforesaid a kind of fractionating column, wherein described liquid reducing hole is generally circular in shape, square or linear.
Preferably, aforesaid a kind of fractionating column, wherein 5-60% of the gross area of described liquid reducing hole for column plate area.
Preferably, aforesaid a kind of fractionating column, wherein the height of described downflow weir is 50-350mm.
Preferably, aforesaid a kind of fractionating column, wherein two plates adjacent in described fractionating column cylinder, are located at
Top for the first plate, be after-fractionating tower tray positioned at bottom, the liquid reducing hole of described after-fractionating tower tray is located at
First plate liquid reducing hole projected area in a first direction, described first direction are liquid in the first plate liquid reducing hole
The direction that body declines.
By above-mentioned technical proposal, a kind of fractionating column of this utility model at least has following advantages：
1st, this utility model provides a kind of new plate.
The new plate that the present embodiment is provided includes column plate and downflow weir, and column plate is vertical with downflow weir, described tower
There is liquid reducing hole on plate, described liquid reducing hole is used for the decline of liquid；Described downflow weir is located at column plate edge, for stopping liquid
Body.The liquid that fractional distillation process is produced declines backflow in liquid reducing hole, changes the purposes in original tower tray aperture；Downflow weir, is used for
Stop the liquid of backflow, and the gross area by each liquid reducing hole on column plate and all liquid reducing holes account for the ratio of column plate area,
Adjust the speed that liquid declines, on the one hand, liquid decrease speed should not be excessively slow, makes liquid that liquid film is formed on tower plate surface, otherwise,
Gas can rise along the gap of liquid reducing hole, be unfavorable for heat exchange；On the other hand, the speed that liquid declines is unsuitable too fast, otherwise,
Heat exchange is not thorough, affects fractionating effect.
2nd, this utility model provides a kind of new fractionating column.
The fractionating column that this utility model is provided includes fractionating column cylinder, plate and riser, described plate
Column plate on have liquid reducing hole, there is downflow weir at edge；Described plate is located in fractionating column cylinder, perpendicular to fractionating column cylinder
Inwall fix, it is staggered in fractionating column cylinder；The cavity that fractionating column cylinder inboard wall and plate are formed is riser.
Traditional fractionating column, the gas of generation rise from air rising hole, and the liquid of generation flows back with downspout, to complete heat
Amount is exchanged.And in the fractionating column that this utility model is provided, the path of gas and liquid being changed, the gas of generation is from riser
Rise, the liquid of generation flows back in liquid reducing hole, gas is met during liquid decline with liquid, to complete heat exchange,
Complete fractional distillation process.
3rd, the fractionating column that this utility model is provided improves the fractionating efficiency of oil.
The fractionating column that this utility model is provided, gas is in the riser formed by fractionating column cylinder inboard wall and plate
Rise, ascending path be S types, gas rise, portion gas be condensed into liquid backflow, liquid in the liquid reducing hole of plate return
Stream, the gas risen along S types path run into the liquid of condensing reflux, carry out heat exchange with liquid, complete fractional distillation.
In liquid reflux course of the present utility model, the back-flow velocity of liquid is more than the backflow of liquid in existing fractionating technology
Speed, improves fractionating efficiency.Because liquid carries out heat exchange with gas in this utility model, if flow rate of liquid is excessively slow,
Then liquid is difficult to form liquid film on column plate, and gas can rise in the gap of liquid reducing hole along column plate, shorten ascending path, gas
It is not thorough with fluid exchange, and then cause fractional distillation process not thorough, affect the quality of fraction products.
4th, the pressure drop of the plate that this utility model is provided is low.
Pressure drop in existing board-like tower tray per tower tray is about 0.3kPa/ rice in 0.5-1kPa, the pressure drop of filler tower tray, this
Pressure drop of the utility model per tower tray is less than 0.1kPa.
In existing plate, gas rises in air rising hole, and the area of each air rising hole is less, and which rose
Journey need to break through the liquid film of tray surface formation, therefore increase the pressure drop of tower tray.In this utility model, gas can be in the side of tower tray
Face rises, and is not required to break through the liquid film of tray surface, therefore reduces the pressure drop of fractional distillation process, improves the safety in operating process
Coefficient, advantageously in practical application.
5th, the fractional distillation speed scalable of the fractionating column that this utility model is provided.
The fractionating column that this utility model is provided, gas rise along the cavity formed by plate and fractional distillation inner wall of tower, on
Path width is risen, therefore, the climbing speed adjustable extent of gas is big；Liquid declines at liquid reducing hole, if the increase of fractional distillation speed, liquid
Body is raised in the liquid level of tray surface, and under gravity, fall off rate increases liquid, meanwhile, the face of the liquid reducing hole of tower tray
Product is also adjusted, therefore, the fall off rate of liquid also has larger range of accommodation.So, the fractionating column that this utility model is provided
Fractional distillation speed can be big in interior adjustment in a big way, operating flexibility, can be according to the species of institute's fractional distillation liquid and practical operation need
Will, adjust fractional distillation speed.
Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model
Art means, and being practiced according to the content of description, with preferred embodiment of the present utility model and coordinate accompanying drawing detailed below
Describe in detail bright as after.
Description of the drawings
Fig. 1 this utility model fractionating column schematic diagrams
1 fractionating column cylinder, 2 plates, 3 riseies, 21 downflow weirs, 22 liquid reducing holes.
The front view of Fig. 2 this utility model plates
21 downflow weirs, 23 column plates.
The top view of Fig. 3 this utility model plates
2 plates, 21 downflow weirs, 22 liquid reducing holes.
Fig. 4 this utility model fractional distillation process schematic diagrams
Specific embodiment
Further to illustrate that this utility model is to reach technological means and effect that predetermined utility model purpose is taken,
Below in conjunction with accompanying drawing and preferred embodiment, to according to the utility model proposes a kind of plate and fractionating column its be embodied as
Mode, structure, feature and its effect, describe in detail as after.In the following description, different " embodiment " or " embodiment " refers to
Be not necessarily same embodiment.Additionally, the special characteristic, structure or feature in one or more embodiments can be by any suitable shape
Formula is combined.
Embodiment 1
The present embodiment provides a kind of plate.
Described plate includes column plate and downflow weir, and column plate is vertical with downflow weir, has liquid reducing hole on described column plate,
Described liquid reducing hole is used for the decline of liquid；Described downflow weir is located at column plate edge, for barrier liquid.
The plate that the present embodiment is provided, the liquid that fractional distillation process is produced decline backflow in liquid reducing hole, change original
There is the purposes in tower tray aperture, wherein, downflow weir, for stopping the liquid spill of backflow.The plate that the present embodiment is provided is used
The separation of liquid in fractionating column, fractionating column as shown in figure 1, plate as shown in Figures 2 and 3, fractional distillation process such as Fig. 4 institutes
Show.
Further, described liquid reducing hole is generally circular in shape.
On column plate, the shape of each liquid reducing hole affects the fractionating effect of plate.Liquid forms liquid film in tray surfaces,
Flow downward along liquid reducing hole under gravity, circular liquid reducing hole is similar to the shape of drop, be conducive to increasing liquid reducing hole and
The intermolecular forces of drop, the speed for being conducive to control liquid to decline, and the liquid film state of tray surfaces is maintained, stop gas in drop
Rise in fluid apertures.
Similar, the shape of described liquid reducing hole can also be the shape such as square or linear or other unsetting shapes, can
To be arranged according to the different of the liquid of institute's fractional distillation.
Further, the gross area of liquid reducing hole for column plate area 5%.
There are several liquid reducing holes on column plate of the present utility model, the gross area of liquid reducing hole (is all descending liquids on each column plate
The area sum in hole) account for the percentage ratio of column plate area preferably less than 5%.This utility model liquid reducing hole act as liquid decline
Path, therefore, the total area of liquid reducing hole is unsuitable too small, and otherwise, liquid declines not in time, and the liquid flow area for being formed is too little,
The contact area of liquid and gas, and then the effect of impact heat exchange are affected, fractional distillation is affected.
Similar, the gross area of liquid reducing hole is the 60% of column plate area.
The gross area of liquid reducing hole of the present utility model accounts for the percentage ratio of column plate area and is not preferably greater than 60%.Total face of liquid reducing hole
Product is excessive, and the ratio increase in fractionating column cavity shared by liquid, the reduction of gas ascending path hinder the speed of gas rising
Degree, and then the effect of heat exchange is affected, affect fractional distillation.
The gross area of this utility model liquid reducing hole accounts for the percentage ratio of column plate area according to the different of the liquid of institute's fractional distillation not
Together.
Further, the height of downflow weir is 50mm.
The height of the downflow weir of the fractionating column that this utility model is provided must not be less than 50mm.Because this utility model is provided
Be a kind of efficient fractionating column, fractionating efficiency is high, then gas liquefaction is changed into the speed of liquid and accordingly improves, therefore, downflow weir
Height must not be less than 50mm, otherwise, the liquid of generation easily overflows, also, this utility model fractionating column in formed liquid,
Liquid film need to be formed in tray surfaces, to ensure liquid full of liquid reducing hole, and continuously be declined, to prevent gas Jing liquid reducing holes
Rise.
Similar, the height of the downflow weir of the fractionating column that this utility model is provided must not be higher than 350mm.Downflow weir is on the one hand
Can prevent the liquid for generating from overflowing, on the other hand, the height of downflow weir is relevant with the distance between adjacent plate.Overflow
The excessive height on weir so that the path of gas and liquid in fractionating column increases, the efficiency of the fractional distillation of reduction, and causes the energy
The waste of resource.
The height of this utility model downflow weir does corresponding adjustment according to the different of the liquid of institute's fractional distillation.
Embodiment 2
A kind of fractionating column that the present embodiment is proposed.
Described fractionating column includes fractionating column cylinder, plate and riser, and described fractionating column cylinder is that fractional distillation is carried
For space, plate is fixed therein on wall；Described plate includes column plate and downflow weir, and column plate is hung down with downflow weir
Directly, there is liquid reducing hole on described column plate, described liquid reducing hole is used for the decline of liquid, and described downflow weir is located at column plate edge,
For barrier liquid；Plate forms groove structure with fractionating column cylinder；Plate is staggered in fractionating column cylinder；
Described riser is the cavity that fractionating column cylinder inboard wall and plate are formed, and is the path that gas rises.
The present embodiment provide fractionating column as shown in figure 1, plate as shown in Figures 2 and 3.
Fractionating column includes fractionating column cylinder 1, plate 2 and riser 3, and plate 2 includes downflow weir 21 and column plate
23, there is liquid reducing hole 22 in column plate 23, the cavity that fractionating column cylinder inboard wall, plate 2 are formed is riser 3.
The fractionating column that the present embodiment is provided, the gas of generation rise in riser, and ascending path is S-type, and liquid is in drop
Flow back in fluid apertures, gas-liquid is met carries out heat exchange, completes fractional distillation.In liquid reflux course of the present utility model, liquid return
Flow velocity degree improves fractionating efficiency more than the back-flow velocity of liquid in existing fractionating technology.Because, in this utility model liquid with
Gas carries out heat exchange, and the gas rate of climb is fast, if flow rate of liquid is excessively slow, gas is not thorough with liquid heat exchange,
And then cause fractional distillation process not thorough, affect the quality of fraction products.The present embodiment provide fractionating column in plate be
Aforesaid plate.
Further, the area of described column plate for fractionating column cylinder inner circle cross-sectional area 70%.This utility model
The area of column plate accounts for the ratio of cylinder inner circle cross-sectional area and cannot be less than 70%, because the ascending path not only ensured by gas
For S types, and also need to make gas in uphill process, sufficient heat exchange is carried out with the liquid that flows down in liquid reducing hole, this
Sample, can just make fractional distillation process more thorough.
Similar, the area of utility model column plate accounts for the ratio of fractionating column cylinder inner circle cross-sectional area and cannot be greater than
95%, it is sufficiently large to ensure the speed that gas rises in riser, and, fractional distillation speed of the present utility model is high, gas and liquid
The generating rate of body is fast, if it cannot be guaranteed that the climbing speed of gas, can cause gas to be trapped in fractionating column, make fractionating column
Interior air pressure is raised, and affects fractionating effect.
The area of this utility model column plate accounts for the ratio of fractionating column cylinder inner circle cross-sectional area can be according to institute's fractional distillation
Liquid different and do corresponding adjustment.
Further, two adjacent in fractionating column cylinder plates, superposed is the first plate, is located at
Bottom for after-fractionating tower tray, the liquid reducing hole of described after-fractionating tower tray is located at the first plate liquid reducing hole in first party
Projected area upwards, described first direction are the direction of liquid decline in the first plate liquid reducing hole.
The position relationship of liquid reducing hole on two neighboring plate in fractionating column is defined, this is defined to ensure that liquid is dividing
Evaporate in the liquid reducing hole of tower tray and decline, and be unlikely to make the liquid in decline to flow into riser region, affect gas to rise and fractional distillation
Process.If liquid decrease speed is too fast, downflow weir then can temporarily prevent liquid spill, finally, be whole liquid backflow
Process provides uniform flow velocity.
Numerical range described in this utility model includes all of numerical value in the range of this, and including any in the range of this
The value range of two values composition.For example, " height of weir plate is 50-350mm ", this numerical range include owning between 50-350
Numerical value, and including any two numerical value in the range of this (for example：80th, the value range (80-90) for 90) constituting；This utility model
The different numerical value of the same index occurred in all embodiments, can in any combination, compositing range value.
The above, is only preferred embodiment of the present utility model, not makees any formal to this utility model
Restriction, any simple modification, equivalent variations and modification above example made according to technical spirit of the present utility model,
Still fall within the range of technical solutions of the utility model.
Claims (10)
1. a kind of plate, it is characterised in that：
Described plate includes column plate and downflow weir, and column plate is vertical with downflow weir,
The quantity for having liquid reducing hole, described liquid reducing hole on described column plate is more than 2, and described liquid reducing hole is used for the decline of liquid；
Described downflow weir is located at column plate edge, for barrier liquid.
2. a kind of plate according to claim 1, it is characterised in that：
Described liquid reducing hole it is generally circular in shape, square or linear.
3. a kind of plate according to claim 1, it is characterised in that：
5-60% of the gross area of described liquid reducing hole for column plate area.
4. a kind of plate according to claim 1, it is characterised in that：
The height of described downflow weir is 50-350mm.
5. a kind of fractionating column, it is characterised in that：
Described fractionating column includes fractionating column cylinder, plate and riser,
Described fractionating column cylinder, provides space for fractional distillation, and plate is fixed therein on wall；
Described plate includes column plate and downflow weir, and column plate is vertical with downflow weir, has liquid reducing hole, descending liquid on described column plate
The quantity in hole is more than 2, and described liquid reducing hole is used for the decline of liquid, and described downflow weir is located at column plate edge, for stopping liquid
Body；Plate forms groove structure with fractionating column cylinder；Plate is staggered in fractionating column cylinder；
Described riser is the cavity that fractionating column cylinder inboard wall and plate are formed, and is the path that gas rises.
6. a kind of fractionating column according to claim 5, it is characterised in that：
70-95% of the area of described column plate for fractionating column cylinder inner circle cross-sectional area.
7. a kind of fractionating column according to claim 5, it is characterised in that：
Described liquid reducing hole it is generally circular in shape, square or linear.
8. a kind of fractionating column according to claim 5, it is characterised in that：
5-60% of the gross area of described liquid reducing hole for column plate area.
9. a kind of fractionating column according to claim 5, it is characterised in that：
The height of described downflow weir is 50-350mm.
10. a kind of fractionating column according to claim 5, it is characterised in that：
Two plates adjacent in fractionating column cylinder, superposed is the first plate, is second positioned at bottom
Plate, the liquid reducing hole of described after-fractionating tower tray are located at the projection in a first direction of the first plate liquid reducing hole
Area, described first direction are the direction of liquid decline in the first plate liquid reducing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621106181.7U CN206063827U (en) | 2016-10-09 | 2016-10-09 | Plate and fractionating column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621106181.7U CN206063827U (en) | 2016-10-09 | 2016-10-09 | Plate and fractionating column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206063827U true CN206063827U (en) | 2017-04-05 |
Family
ID=58440443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621106181.7U Expired - Fee Related CN206063827U (en) | 2016-10-09 | 2016-10-09 | Plate and fractionating column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206063827U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113730939A (en) * | 2021-09-18 | 2021-12-03 | 九天起宏(江苏)检测有限公司 | Rectifying column based on chemical production |
-
2016
- 2016-10-09 CN CN201621106181.7U patent/CN206063827U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113730939A (en) * | 2021-09-18 | 2021-12-03 | 九天起宏(江苏)检测有限公司 | Rectifying column based on chemical production |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170405 Termination date: 20181009 |