CN108245929A - A kind of method of interlayer cone cover dispersive element and dispersion phase - Google Patents
A kind of method of interlayer cone cover dispersive element and dispersion phase Download PDFInfo
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- CN108245929A CN108245929A CN201810037255.3A CN201810037255A CN108245929A CN 108245929 A CN108245929 A CN 108245929A CN 201810037255 A CN201810037255 A CN 201810037255A CN 108245929 A CN108245929 A CN 108245929A
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- cone cover
- outer layer
- dispersive element
- sieve pore
- conical tube
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/04—Solvent extraction of solutions which are liquid
Abstract
The invention discloses a kind of interlayer cone cover dispersive elements and the method for dispersion phase, the dispersive element includes two with the outer layer cone cover of central shaft and internal layer conical tube, interlayer gap is formed between cone cover and conical tube, the lower end in gap is connected and sealed by horizontal annular bottom plate；The vertical section of outer layer cone cover is in isosceles triangle or isosceles trapezoid；Outer layer cone cover side wall is provided with multiple rows of sieve pore along different height, is fan-shaped sieve-plate structure during expansion；Internal layer conical tube upper and lower ends are opened wide, and form liquid stream duct, and the height of internal layer conical tube is less than outer layer cone cover；When the vertical section of outer layer cone cover is in isosceles trapezoid, the top of outer layer cone cover is closed by circular top plate, and at least one sieve pore is provided in circular top plate.Interlayer cone cover dispersive element of the present invention has many advantages, such as that operating flexibility is wide, mass-transfer efficiency is high, extraction process is reliable and stable.
Description
Technical field
The present invention relates to a kind of interlayer cone cover dispersive element and the method for dispersion phase, for more liquid phase flowing environments
Effective dispersion process of lower liquid phase provides one kind with larger operating flexibility specifically for the Liquid-liquid Extraction Processes in chemical separating field
Column plate dispersed structure and efficient solution dispersion method.
Background technology
In Chemical Manufacture commonly use sieve-plate tower complete liquid liquid continuous countercurrent extraction process, reduce continuous phase axial backmixing and
It is cost-effective etc. than packed tower advantageously, the perforated-plate extraction tower of reasonable design can realize preferable separating effect.
Requirement of the common perforated-plate extraction tower to operating condition is more harsh, when the flow of dispersed phase is smaller, between column plate
It is difficult to form stable cohesion layer height, continuous phase is also possible to mass-transfer efficiency be caused to decline directly through sieve pore.Work as dispersed phase
When flow is too big, the cohesion layer height between column plate again can be excessive, causes practical mass transfer section is too small can also drop mass-transfer efficiency
It is low.
In production as can according to the hole flow velocity degree for changing synchronous adjustment dispersed phase at any time and passing through sieve plate of operational load, undoubtedly
The mass transfer effect of two-phase can be substantially improved, above-mentioned nonideal operational issue is avoided to occur, the present invention is to solve the problems, such as this
Provide a kind of effective approach.Present invention employs a kind of interlayer cone cover structures, are opened on outer layer cone cover side wall
There is multiple rows of round sieve, a part of sieve pore position is higher than the top of internal layer conical tube, and another part position is then justified less than internal layer
The top of conical pipe.Assuming that using light phase as dispersed phase, when its actual flow is relatively low, light phase only can be upper in cone cover
Portion forms effective coacervate, and all light phases will be discharged from the sieve pore on cone cover top at this time, and heavy phase will be covered from cone
The sieve pore of lower part blows back into the annular space channel between cone cover and conical tube, but since the effect heavy phase of light phase fluid-tight can't
It is flowed into internal layer conical tube, liquid-liquid interface is just formed in annular space.Since the only conical sieve pore for covering top rises at this time
Peptizaiton, thus can realize higher dispersed phase hole flow velocity degree.When light phase flow increase, the liquid-liquid diphase in interlayer annular space
Interface will reduce, until all heavy phases blowed back into are extruded from the sieve pore of lower part, and light phase will also be discharged from the sieve pore of lower part.
As it can be seen that with the increase of light phase flow, the sieve pore of cone cover lower part has also begun to peptizaiton discharge light phase liquid, makes light phase fast
Speed passes through column plate to prevent from forming excessively high coacervate.
The detailed construction of the present invention will the narration in detail again in invention content and specific embodiment.
Invention content
It is an object of the invention to be directed to the characteristics of common perforated-plate extraction tower operating flexibility is not high to propose a kind of improved way
The sieve pore for the dispersed phase that circulates can be adaptively adjusted in diameter and tower plate structure, this kind of structure according to the variation of dispersion phase flow rate
Number forms stable dispersed phase aggregates layer, realizes higher extraction efficiency.
The purpose of the present invention is achieved through the following technical solutions：A kind of interlayer cone cover dispersive element, including
Two, with the outer layer cone cover of central shaft and internal layer conical tube, form interlayer gap, seam between cone cover and conical tube
The lower end of gap is connected and is sealed by horizontal annular bottom plate；The vertical section of outer layer cone cover is in isosceles triangle or isosceles ladder
Shape；Outer layer cone cover side wall is provided with multiple rows of sieve pore along different height, is fan-shaped sieve-plate structure during expansion；On internal layer conical tube
Lower both ends open, forms liquid stream duct, and the height of internal layer conical tube is less than outer layer cone cover；When erecting for outer layer cone cover
When section is in isosceles trapezoid, the top of outer layer cone cover is closed by circular top plate, and at least one sieve is provided in circular top plate
Hole.
Further, when the vertical section of outer layer cone cover be in isosceles trapezoid when, opened at the center of circular top plate there are one
Sieve pore is opened there are one sieve pore at center and is provided with multi-turn sieve pore along different radii.
Further, when the vertical section of outer layer cone cover is in isosceles trapezoid, the top end diameter of outer layer cone cover is 8
~50mm.
Further, the base angle of the cone cover is 45 °~75 °.
Further, the bottom diameter of the outer layer cone cover is 60~100mm；The bottom end of the internal layer conical tube
A diameter of 40~80mm, top end diameter are 20~40mm.
Further, the sieve pore is round sieve, and round sieve specification is 3~6mm of φ.
A kind of method that dispersion phase is carried out using above-mentioned dispersive element, includes the following steps：
When for disperseing light phase, the dispersive element is fixed on to the top of column plate, duct bottom end on column plate
Pass is consistent, and light phase is flowed up from column plate trepanning, across the conical duct inside dispersive element, flows through internal layer conical tube
Top after directly from the discharge of the top sieve pore of outer layer cone cover or along the outside annular space of internal layer conical tube flow downward from
The lower part sieve pore discharge of outer layer cone cover side wall.Heavy phase fluid of the light phase after the sieve pore discharge of outer layer cone cover with surrounding
Carry out contact mass transfer.
When for disperseing heavy phase, dispersive element overturning is fixed on to the lower section of column plate trepanning.Heavy phase passes through
The interior conical duct of dispersive element flows downward, and flows through the bottom end of internal layer conical tube directly under outer layer cone cover
Sieve pore discharge in portion flows up top sieve pore row from outer layer cone cover side wall along the outside annular space of internal layer conical tube
Go out.Heavy phase carries out contact mass transfer after the sieve pore discharge of outer layer cone cover with the light phase fluid of surrounding.
The beneficial effects of the present invention are：
(1) annular space channel is formed between the outer layer cone cover of dispersive element of the present invention and internal layer conical tube, in dispersed phase
Playing the role of fluid-tight when flow is relatively low, dispersion phase flow rate flows fast through column plate as runner by dispersed phase again when higher, thus
Have the function of to adjust operating flexibility.
(2) dispersed phase of the invention is formed obliquely when big flow passes through dispersive element (for light phase as dispersed phase)
Or the jet phenomenon (for heavy phase as dispersed phase) obliquely, the dispersed phase interaction with the injection of surrounding other dispersive elements
Be conducive to that dispersed phase is made to crush increase extraction rate in continuous phase.
(3) dispersive element of the invention can be easily processed using different materials, convenient for during application according to continuous phase
It is selected with the property of dispersed phase.
(4) dispersive element of the invention can make standard component, and when use is directly installed on the duct of column plate, is had
Prospect easy to spread.
Description of the drawings
Fig. 1 is a form of dispersive element plan view when conical cover vertical section is in isosceles trapezoid；
Fig. 2 is a form of dispersive element vertical view when conical cover vertical section is in isosceles trapezoid；
Fig. 3 is a form of expanded view when conical cover vertical section is in isosceles trapezoid；
Fig. 4 is another form of dispersive element plan view when conical cover vertical section is in isosceles trapezoid；
Fig. 5 is another form of dispersive element vertical view when conical cover vertical section is in isosceles trapezoid；
Fig. 6 is another form of expanded view when conical cover vertical section is in isosceles trapezoid；
The dispersive element plan view that Fig. 7 is conical cover vertical section when being in isosceles triangle；
The dispersive element vertical view that Fig. 8 is conical cover vertical section when being in isosceles triangle；
The expanded view that Fig. 9 is conical cover vertical section when being in isosceles triangle；
In figure, cone cover 1, conical tube 2, annular bottom plate 3, circular top plate 4, sieve pore 5, column plate 6, duct 7.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
As shown in figs 1-9, a kind of interlayer cone cover dispersive element of the present invention, including the outer layer circular cone two with central shaft
Shape cover 1 and internal layer conical tube 2 form interlayer gap between cone cover 1 and conical tube 2, the lower end in gap is by horizontal ring
Shape bottom plate 3 is connected and is sealed；The vertical section of outer layer cone cover 1 is in isosceles triangle or isosceles trapezoid；1 side of outer layer cone cover
Wall is provided with multiple rows of sieve pore 5 along different height, is fan-shaped sieve-plate structure, preferably semicircle sieve-plate structure during expansion；Internal layer circular cone
2 upper and lower ends of shape pipe are opened wide, and form liquid stream duct 7, and the height of internal layer conical tube 2 is less than outer layer cone cover 1；When outer layer is justified
When the vertical section of cone-shaped hood 1 is in isosceles trapezoid, the top of outer layer cone cover 1 is closed by circular top plate 4, is opened in circular top plate 4
There is at least one sieve pore 5.
Further, when the vertical section of outer layer cone cover 1 is in isosceles trapezoid, one is provided at the center of circular top plate 4
A sieve pore 5 is opened there are one sieve pore 5 at center and is provided with multi-turn sieve pore 5 along different radii.
Further, when the vertical section of outer layer cone cover 1 is in isosceles trapezoid, the top end diameter of outer layer cone cover 1
For 8~50mm.
Further, the base angle of the cone cover 1 is 45 °~75 °, preferably 60 °.
Further, the bottom diameter of the outer layer cone cover 1 is 60~100mm；The bottom of the internal layer conical tube 2
A diameter of 40~80mm is held, top end diameter is 20~40mm.
Further, the sieve pore 5 is round sieve, and round sieve specification is 3~6mm of φ.
A kind of method that dispersion phase is carried out using above-mentioned dispersive element, includes the following steps：
This kind of dispersive element is mainly used for Liquid-liquid Extraction Processes, and when for disperseing light phase, the dispersive element is fixed
In the top of column plate 6,7 bottom end of duct is consistent with the pass on column plate 6, and light phase is flowed up from 6 trepanning of column plate, across dispersion
Conical duct 7 inside element is flowed through behind the top of internal layer conical tube 2 directly from the top sieve pore 5 of outer layer cone cover 1
Discharge is discharged along the lower part sieve pore 5 that flows downward from 1 side wall of outer layer cone cover of outside annular space of internal layer conical tube 2.Gently
Mutually contact mass transfer is carried out with the heavy phase fluid of surrounding after the discharge of the sieve pore 5 of outer layer cone cover 1.
When for disperseing heavy phase, dispersive element overturning is fixed on to the lower section of 6 trepanning of column plate.Heavy phase passes through
The interior conical duct 7 of dispersive element flows downward, and flows through the bottom end of internal layer conical tube 2 directly from outer layer cone cover 1
Lower part sieve pore 5 discharge or flowed up along the outside annular space of internal layer conical tube 2 from the top of 1 side wall of outer layer cone cover
Sieve pore 5 is discharged.Heavy phase carries out contact mass transfer after the discharge of sieve pore 5 of outer layer cone cover 1 with the light phase fluid of surrounding.
The structure of the present invention is described further, but it is not considered that the present invention is only suitable for this below by way of specific embodiment
A little cases.
Embodiment 1
Fig. 1 and Fig. 2 represents a kind of structure chart of interlayer cone cover dispersive element.Wherein, outer layer cone cover 1 is perpendicular
Section is in isosceles trapezoid；A diameter of 80mm of 1 bottom end of outer layer cone cover, a diameter of 12mm on top, cone cover are a height of
60mm；A diameter of 64mm of 2 bottom end of internal layer conical tube, a diameter of 30mm on top, a height of 30mm of conical tube.
The side expanded view of outer layer cone cover 1 is as shown in figure 3, for semi-circular shape sieve plate, thereon by concentric circular fashion etc.
Spacing is provided with 5 row's round sieves 5.Often row's round sieve 5 often arranges sieve pore center under in sustained height after circular conical surface is surrounded
The vertical height of portion's annular bottom plate plate 3 is respectively 10mm, 20mm, 30mm, 40mm and 50mm, often arrange the number of round sieve 5 from
Under to it is upper be respectively 18,15,12,9 and 6, be symmetrically arranged into equidistant.The specification of round sieve 5 is 4~5mm of φ.
Outer layer cone cover 1 and 2 lower part of internal layer conical tube use width to connect and seal for the annular bottom plate 3 of 8mm, it is ensured that
Cone cover 1 and 2 same central shaft of conical tube.The top of cone cover 1 is closed by circular top plate 4, and the center of circular top plate 4 is opened
There is 1 sieve pore 5.
The perforated area of the total sieve pore of interlayer cone cover dispersive element of this structure and the area ratio in duct 7 for 0.24~
0.37。
Embodiment 2
Fig. 1 and Fig. 2 represents a kind of structure chart of interlayer cone cover dispersive element.Wherein, outer layer cone cover 1 is perpendicular
Section is in isosceles trapezoid；A diameter of 60mm of 1 bottom end of outer layer cone cover, a diameter of 9mm on top, cone cover are a height of
45mm；A diameter of 48mm of 2 bottom end of internal layer conical tube, a diameter of 22.5mm on top, a height of 22.5mm of conical tube.
The side expanded view of outer layer cone cover 1 is as shown in figure 3, for semi-circular shape sieve plate, thereon by concentric circular fashion etc.
Spacing is provided with 5 row's round sieves 5.Often row's round sieve 5 often arranges sieve pore center under in sustained height after circular conical surface is surrounded
The vertical height of portion's annular bottom plate plate 3 is respectively 7.5mm, 15mm, 22.5mm, 30mm and 37.5mm, often arranges of round sieve 5
Number is respectively 18,15,12,9 and 6 from top to bottom, is symmetrically arranged into equidistant.The specification of round sieve 5 is 3~4mm of φ.
Outer layer cone cover 1 and 2 lower part of internal layer conical tube use width to connect and seal for the annular bottom plate 3 of 6mm, it is ensured that
Cone cover 1 and 2 same central shaft of conical tube.The top of cone cover 1 is closed by circular top plate 4, and the center of circular top plate 4 is opened
There is 1 sieve pore 5.
The perforated area of the total sieve pore of interlayer cone cover dispersive element of this structure and the area ratio in duct 7 for 0.24~
0.42。
Embodiment 3
Fig. 4 and Fig. 5 represents a kind of structure chart of interlayer cone cover dispersive element.Wherein, outer layer cone cover 1 is perpendicular
Section is in isosceles trapezoid；A diameter of 80mm of 1 bottom end of outer layer cone cover, a diameter of 35mm on top, cone cover are a height of
40mm；A diameter of 64mm of 2 bottom end of internal layer conical tube, a diameter of 30mm on top, a height of 30mm of conical tube.
The side expanded view of outer layer cone cover 1 is as shown in fig. 6, for semi-circular shape sieve plate, thereon by concentric circular fashion etc.
Spacing is provided with 3 row's round sieves 5.Often row's round sieve 5 often arranges sieve pore center under in sustained height after circular conical surface is surrounded
The vertical height of portion's annular bottom plate plate 3 is respectively 10mm, 20mm and 30mm, and the number for often arranging round sieve 5 is distinguished from top to bottom
It is 18,15 and 12, is symmetrically arranged into equidistant.The top of cone cover 1 is closed by circular top plate 4, is provided in circular top plate 4
7 sieve pores 5.The specification of round sieve 5 is 4~5mm of φ.
Outer layer cone cover 1 and 2 lower part of internal layer conical tube use width to connect and seal for the annular bottom plate 3 of 8mm, it is ensured that
Cone cover 1 and 2 same central shaft of conical tube.
The perforated area of the total sieve pore of interlayer cone cover dispersive element of this structure and the area ratio in duct 7 for 0.20~
0.32。
Embodiment 4
Fig. 4 and Fig. 5 represents a kind of structure chart of interlayer cone cover dispersive element.Wherein, outer layer cone cover 1 is perpendicular
Section is in isosceles trapezoid；A diameter of 100mm of 1 bottom end of outer layer cone cover, a diameter of 45mm on top, cone cover are a height of
50mm；A diameter of 80mm of 2 bottom end of internal layer conical tube, a diameter of 37.5mm on top, a height of 37.5mm of conical tube.
The side expanded view of outer layer cone cover 1 is as shown in fig. 6, for semi-circular shape sieve plate, thereon by concentric circular fashion etc.
Spacing is provided with 3 row's round sieves 5.Often row's round sieve 5 often arranges sieve pore center under in sustained height after circular conical surface is surrounded
The vertical height of portion's annular bottom plate plate 3 is respectively 12.5mm, 25mm and 37.5mm, often arranges the number of round sieve 5 from top to bottom
It respectively 18,15 and 12, is symmetrically arranged into equidistant.The top of cone cover 1 is closed by circular top plate 4, in circular top plate 4
It is provided with 7 sieve pores 5.The specification of round sieve 5 is 5~6mm of φ.
Outer layer cone cover 1 and 2 lower part of internal layer conical tube use width to connect and seal for the annular bottom plate 3 of 10mm, really
Protect cone cover 1 and 2 same central shaft of conical tube.
The perforated area of the total sieve pore of interlayer cone cover dispersive element of this structure and the area ratio in duct 7 for 0.20~
0.29。
Embodiment 5
Fig. 7 and Fig. 8 represents a kind of structure chart of interlayer cone cover dispersive element.Wherein, outer layer cone cover 1 is perpendicular
Section is in isosceles triangle；A diameter of 80mm of 1 bottom end of outer layer cone cover, cone cover a height of 70mm；Internal layer conical tube 2
A diameter of 64mm of bottom end, a diameter of 30mm on top, 2 a height of 30mm of conical tube.
The side expanded view of outer layer cone cover 1 is as shown in figure 9, for semicircle sieve plate, thereon by between concentric circular fashion etc.
Away from being provided with 6 row's round sieves 5.Often row's round sieve 5 often arranges sieve pore center far from lower part in sustained height after circular conical surface is surrounded
The vertical height of annular bottom plate plate 3 is respectively 10mm, 20mm, 30mm, 40mm, 50mm and 60mm, often arranges the number of round sieve 5
It is respectively 18,15,12,9,6 and 3 from top to bottom, is symmetrically arranged into equidistant.The specification of round sieve 5 is 4~5mm of φ.
Outer layer cone cover 1 and 2 lower part of internal layer conical tube use width to connect and seal for the annular bottom plate 3 of 8mm, it is ensured that
Cone cover 1 and 2 same central shaft of conical tube.
The perforated area of the total sieve pore of interlayer cone cover dispersive element of this structure and the area ratio in duct 7 for 0.25~
0.38。
Embodiment 6
Fig. 7 and Fig. 8 represents a kind of structure chart of interlayer cone cover dispersive element.Wherein, outer layer cone cover 1 is perpendicular
Section is in isosceles triangle；A diameter of 60mm of 1 bottom end of outer layer cone cover, 1 a height of 52mm of cone cover；Internal layer conical tube
A diameter of 48mm of 2 bottom ends, a diameter of 22.5mm on top, a height of 22.5mm of conical tube.
The side expanded view of outer layer cone cover 1 is as shown in figure 9, for semicircle sieve plate, thereon by between concentric circular fashion etc.
Away from being provided with 6 row's round sieves 5.Often row's round sieve 5 often arranges sieve pore center far from lower part in sustained height after circular conical surface is surrounded
The vertical height of annular bottom plate plate 3 is respectively 7.5mm, 15mm, 22.5mm, 30mm, 37.5mm and 45mm, often arranges round sieve 5
Number be respectively 18,15,12,9,6 and 3 from top to bottom, be symmetrically arranged into equidistant.The specification of round sieve 5 for φ 3~
4mm。
Outer layer cone cover 1 and 2 lower part of internal layer conical tube use width to connect and seal for the annular bottom plate 3 of 6mm, it is ensured that
Cone cover 1 and 2 same central shaft of conical tube.
The perforated area of the total sieve pore of interlayer cone cover dispersive element of this structure and the area ratio in duct 7 for 0.25~
0.44。
Claims (7)
1. a kind of interlayer cone cover dispersive element, which is characterized in that including two with the outer layer cone cover of central shaft and interior
Layer conical tube, cone cover form interlayer gap between conical tube, the lower end in gap by horizontal annular bottom plate connection simultaneously
Sealing；The vertical section of outer layer cone cover is in isosceles triangle or isosceles trapezoid；Outer layer cone cover side wall is opened along different height
There is multiple rows of sieve pore, be fan-shaped sieve-plate structure during expansion；Internal layer conical tube upper and lower ends are opened wide, and form liquid stream duct, internal layer circle
The height of conical pipe is less than outer layer cone cover；When the vertical section of outer layer cone cover is in isosceles trapezoid, outer layer cone cover
Top closed by circular top plate, and at least one sieve pore is provided in circular top plate.
2. a kind of interlayer cone cover dispersive element according to claim 1, which is characterized in that when outer layer cone cover
When vertical section is in isosceles trapezoid, is opened at the center of circular top plate there are one sieve pore or opened at center there are one sieve pore and along difference
Radius is provided with multi-turn sieve pore.
3. a kind of interlayer cone cover dispersive element according to claim 1, which is characterized in that when outer layer cone cover
When vertical section is in isosceles trapezoid, the top end diameter of outer layer cone cover is 8~50mm.
A kind of 4. interlayer cone cover dispersive element according to claim 1, which is characterized in that the bottom of the cone cover
Angle is 45 °~75 °.
A kind of 5. interlayer cone cover dispersive element according to claim 1, which is characterized in that the outer layer cone cover
1 bottom diameter is 60~100mm；The bottom diameter of the internal layer conical tube is 40~80mm, top end diameter for 20~
40mm。
6. a kind of interlayer cone cover dispersive element according to claim 1, which is characterized in that the sieve pore is circular screen
Hole, round sieve specification are 3~6mm of φ.
A kind of 7. method that dispersion phase is carried out using claim 1~6 any one of them dispersive element, which is characterized in that
Include the following steps：
When for disperseing light phase, the dispersive element is fixed on to the top of column plate, duct bottom end and the pass on column plate
Unanimously, light phase is flowed up from column plate trepanning, across the conical duct inside dispersive element, flows through the top of internal layer conical tube
It directly flows downward behind end from the top sieve pore discharge of outer layer cone cover or along the outside annular space of internal layer conical tube from outer layer
The lower part sieve pore discharge of conical cover side wall.Light phase carries out after the sieve pore discharge of outer layer cone cover with the heavy phase fluid of surrounding
Contact mass transfer.
When for disperseing heavy phase, dispersive element overturning is fixed on to the lower section of column plate trepanning.Heavy phase passes through dispersion
The interior conical duct of element flows downward, and the bottom end for flowing through internal layer conical tube is directly sieved from the lower part of outer layer cone cover
It discharges or flows up top sieve pore discharge from outer layer cone cover side wall along the outside annular space of internal layer conical tube in hole.Weight
Mutually contact mass transfer is carried out with the light phase fluid of surrounding after the discharge of the sieve pore of outer layer cone cover.
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| CN111013178A (en) * | 2019-12-17 | 2020-04-17 | 浙江大学 | Stepped liquid circulation bubble tower and method for dispersing gas |
| CN111013336A (en) * | 2019-12-17 | 2020-04-17 | 浙江大学 | Double-cone gas collection distribution cover for gas-liquid separation and gas dispersion method |
| CN114522437A (en) * | 2022-03-17 | 2022-05-24 | 宿迁市盈科新材料有限公司 | Tetrahydrofuran pressurization purification rectifying tower |
| CN115212601A (en) * | 2022-07-18 | 2022-10-21 | 厦门市凯讯科技有限公司 | Sieve plate tower with small tower plate interval |
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| CN114522437A (en) * | 2022-03-17 | 2022-05-24 | 宿迁市盈科新材料有限公司 | Tetrahydrofuran pressurization purification rectifying tower |
| CN114522437B (en) * | 2022-03-17 | 2023-08-08 | 宿迁市盈科新材料有限公司 | Tetrahydrofuran pressurization purification rectifying tower |
| CN115212601A (en) * | 2022-07-18 | 2022-10-21 | 厦门市凯讯科技有限公司 | Sieve plate tower with small tower plate interval |
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|---|---|
| CN108245929B (en) | 2019-06-14 |
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