CN118059527B - Rectifying device - Google Patents
Rectifying device Download PDFInfo
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- CN118059527B CN118059527B CN202410465602.8A CN202410465602A CN118059527B CN 118059527 B CN118059527 B CN 118059527B CN 202410465602 A CN202410465602 A CN 202410465602A CN 118059527 B CN118059527 B CN 118059527B
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- filler
- tube body
- circular tube
- rectifying
- composite
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- 239000000945 filler Substances 0.000 claims abstract description 79
- 239000002131 composite material Substances 0.000 claims abstract description 36
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 239000007791 liquid phase Substances 0.000 claims abstract description 16
- 239000012071 phase Substances 0.000 claims abstract description 16
- 230000000630 rising effect Effects 0.000 claims abstract description 4
- 238000005452 bending Methods 0.000 claims description 16
- 238000012856 packing Methods 0.000 claims description 14
- 238000003825 pressing Methods 0.000 claims description 12
- 210000001503 joint Anatomy 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 15
- 239000007789 gas Substances 0.000 description 15
- 150000001875 compounds Chemical class 0.000 description 9
- 239000003209 petroleum derivative Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 208000005168 Intussusception Diseases 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000010828 elution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007792 gaseous phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention relates to the technical field of chemical equipment, in particular to a rectifying device, which comprises a rectifying tower, wherein a plurality of longitudinally distributed filler supporting plates are arranged in the rectifying tower, arched holes for up-down observation are formed in the filler supporting plates, the arched holes in the plurality of filler supporting plates are arranged in a left-right staggered mode, a plurality of gaskets are fixedly arranged on the upper surface of the filler supporting plates, vertical rods are fixedly arranged on the upper surfaces of the gaskets, a plurality of longitudinally distributed composite fillers are sleeved outside the vertical rods, the lowest composite filler is in sliding abutting connection with the upper surfaces of the gaskets, and a pushing force is applied to the composite filler from a gas phase or liquid phase rising in the arched holes, so that the composite filler rotates around the self axle center of the composite filler, and the composite filler comprises a round pipe body and elastic filler. The composite fillers on the same vertical rod are independent of each other, can rotate around the vertical rod, increase the kinetic energy of the liquid in the vertical rod, avoid the liquid from being locally accumulated, and ensure the gas-liquid mass transfer efficiency.
Description
Technical Field
The invention relates to the technical field of chemical equipment, in particular to a rectifying device.
Background
The petroleum hydrocarbon cracking products contain a large amount of impurities, and separation and purification are required, wherein light compounds are separated out through reduced pressure rectification, and then the impurities dissolved in the petroleum hydrocarbon are removed through solvent elution. Finally, the required target product is obtained through distillation and separation.
CN116020153B discloses a rectifying device for methyl acetate production with a heat recycling function, the rectifying device increases the contact probability of a gas phase and a liquid phase by rotating a rectifying component in a rectifying tank, but has the following defects: 1. the rectification components are static relative to each other in the rotating process, and when centrifugal force generated by rotation is insufficient to throw out liquid, the liquid can be accumulated locally in the rectification components, so that the gas-liquid mass transfer efficiency is affected; 2. the centrifugal force generated by high-speed rotation can realize an ultra-gravity field, which is beneficial to improving the speed of the gas phase and the liquid phase, but can reduce the contact time of the gas phase and the liquid phase.
Disclosure of Invention
The present invention is directed to a rectifying device, which solves the above-mentioned problems of the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a rectifying device, includes the rectifying column, be equipped with a plurality of filler backup pad of vertical distribution in the rectifying column, the arch hole of observing from top to bottom is seted up to the filler backup pad, a plurality of arch hole in the filler backup pad is left and right sides crisscross the setting, the upper surface fixed of filler backup pad is equipped with a plurality of gasket, the upper surface fixed of gasket is equipped with the montant, the montant overcoat is equipped with a plurality of vertically distributed's compound filler, and the compound filler that is located the below with the upper surface slip butt of gasket, follow the gaseous phase or the liquid that rises in the arch hole is relative compound filler applys the driving force for compound filler is rotatory around its self axle center;
The center of the packing support plate is fixedly penetrated with a shaft sleeve, a rotating shaft fixedly connected with the shaft sleeve is arranged in the rectifying tower, a support ring is fixedly sleeved on the inner wall of the rectifying tower, the upper surface of the support ring is in sliding connection with the lower surface of the packing support plate, and a speed reducing motor for driving the rotating shaft to rotate is arranged at the top of the rectifying tower;
The composite filler comprises a circular tube body and elastic filler fixedly arranged at the top of the circular tube body, a plurality of sliding parts are integrally formed on the lower surface of the circular tube body, the lower surface of the sliding parts is an arc surface or an elliptical arc surface, the sliding parts on the circular tube body above are in sliding fit with the elastic filler in the circular tube body below, the inner wall of the circular tube body is integrally formed with four inner bending sheets, the four inner bending sheets are uniformly arranged in an annular shape relative to the axis of the circular tube body, the arc convex surfaces of the four inner bending sheets are tangent with the outer wall of the vertical rod, and the side wall of the circular tube body is provided with a side surface hole allowing gas phase or liquid phase to impact the arc concave surface of the inner bending sheet.
Optionally, the length of the side wall of the circular tube body is equal to the outer diameter of the circular tube body, the horizontal section of the inward bending piece is arc-shaped, and the side hole is of a rectangular structure.
Optionally, the elastic filler comprises an elastic coil fixedly connected with the circular tube body and a pressing sheet fixedly connected with the upper surface of the elastic coil;
The elastic coil is of a cylindrical spiral structure, the upper surface of the elastic coil is a plane, the upper surface of the pressing sheet is in sliding butt with the sliding piece, a gap exists between the upper surface of the round tube body positioned above and the lower surface of the round tube body positioned below, the top thread of the vertical rod is connected with a pressing ring, and the lower surface of the pressing ring is in butt joint with the upper surface of the inner bending sheet positioned on the uppermost round tube body.
Optionally, the annular groove is seted up to the top inner wall of the body, and the slider that is located on the body of pipe of top is located in the annular groove that is located on the body of pipe of below, the fixed cover of elastic filler is located in the annular groove, the top outer wall of the body of pipe seted up with the through-hole of annular groove intercommunication.
Optionally, the top of the rectifying column is fixedly connected with a condenser, the tower kettle of the rectifying column is fixedly connected with a reboiler, the side wall of the rectifying column is fixedly connected with a feeding pipe, and the side wall of the rectifying column is fixedly connected with a side discharge pipe below the feeding pipe.
Compared with the prior art, the invention has the following beneficial effects:
1. The composite fillers on the same vertical rod are independent of each other, can rotate around the vertical rod, increase the kinetic energy of the liquid in the vertical rod, avoid the liquid from being locally accumulated, ensure the gas-liquid mass transfer efficiency, form a broken line passage between the upper and lower filler supporting plates through the arched holes which are arranged left and right in a staggered way, prolong the time of contacting the gas phase and the liquid phase with the composite fillers, and realize the full heat transfer and mass transfer;
2. The invention combines the round tube body and the elastic filler to form an internal and external double-effect filler structure, has large surface area and porosity, can better contact fluid, prolongs the contact time of gas and liquid phases, and ensures that the fluid and the filler can effectively conduct heat and mass transfer;
3. According to the invention, the composite filler can be pressed down by rotating the pressing ring, the effect of compressing the elastic filler is realized, and the horizontal positions of the fluid gap channel and the through hole can be changed, so that the horizontal positions of the gap channel and the through hole on different vertical rods are different, and fluid flowing out of the composite filler is easier to strike adjacent composite filler nearby, and the heat and mass transfer efficiency is increased;
4. The annular groove of the invention is sleeved with the sliding piece positioned above, so that the composite filler positioned on the same vertical rod has certain connection strength and maintains certain coaxiality, and the impact resistance of the composite filler to gas phase and liquid phase is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the packing support plate and the support ring of the present invention;
FIG. 3 is a schematic view of the structure of section A-A of FIG. 1;
FIG. 4 is an enlarged schematic view of the portion B in FIG. 3;
FIG. 5 is a schematic view of the structure of the composite filler and the vertical rod in the present invention;
fig. 6 is a half cross-sectional view of fig. 5.
In the figure: 1. a rectifying tower; 2. a filler support plate; 3. an arcuate aperture; 4. a gasket; 5. a vertical rod; 6. a composite filler; 7. a round tube body; 8. a slider; 9. an annular groove; 10. a through hole; 11. an inward bending piece; 12. a side hole; 13. an elastic filler; 14. an elastic coil; 15. tabletting; 16. a compression ring; 17. a shaft sleeve; 18. a rotating shaft; 19. a support ring; 20. a speed reducing motor; 21. a condenser; 22. a reboiler; 23. a feed pipe; 24. a lateral line discharging pipe.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples: referring to fig. 1, the present invention provides a rectifying device, which comprises a rectifying tower 1, wherein a condenser 21 is fixedly connected to the top of the rectifying tower 1, a reboiler 22 is fixedly connected to the bottom of the rectifying tower 1, a feeding pipe 23 is fixedly connected to the side wall of the rectifying tower 1, a lateral discharge pipe 24 is fixedly connected to the side wall of the rectifying tower 1 and below the feeding pipe 23, and a discharge pipe is fixedly connected to the bottom of the rectifying tower 1.
The device is suitable for rectifying petroleum hydrocarbon cracking products, the petroleum hydrocarbon cracking products enter the rectifying tower 1 from a feeding pipe 23, gas phase flowing out of the top of the rectifying tower 1 is cooled by a condenser 21 and then is distilled as light components (products with carbon number less than or equal to 5), middle components (mainly products with carbon number of 6-8) are concentrated in a side line extraction section of the rectifying tower 1 and then are extracted from a side line discharge pipe 24 as side line products, and heavy components (products with carbon number of more than or equal to 9) and middle components are separated in a stripping section of the rectifying tower 1, and heavy components are distilled from a tower kettle blocked by the rectifying tower 1.
Referring to fig. 2 to 4, a plurality of longitudinally distributed packing support plates 2 are arranged in the rectifying tower 1, the packing support plates 2 are provided with arched holes 3 observed from top to bottom, and the arched holes 3 on the plurality of packing support plates 2 are staggered left and right. Referring to fig. 4, a plurality of gaskets 4 are fixedly arranged on the upper surface of the filler supporting plate 2, vertical rods 5 are fixedly arranged on the upper surface of the gaskets 4, a plurality of composite fillers 6 which are longitudinally distributed are sleeved outside the vertical rods 5, and the lowest composite filler 6 is in sliding contact with the upper surface of the gaskets 4, so that the gas phase or liquid phase rising from the arched holes 3 exerts pushing force on the composite filler 6, and the composite filler 6 rotates around the axis of the composite filler 6.
The arched holes 3 which are staggered left and right form a broken line passage between the upper packing support plate 2 and the lower packing support plate 2, so that the time for gas phase and liquid phase to contact the composite packing 6 is prolonged, the sufficient heat and mass transfer is realized, and the sufficient separation of product components is further realized.
The center of the packing support plate 2 is fixedly penetrated with a shaft sleeve 17, a rotating shaft 18 fixedly connected with the shaft sleeve 17 is arranged in the rectifying tower 1, the inner wall of the rectifying tower 1 is fixedly sleeved with a support ring 19, and the upper surface of the support ring 19 is in sliding connection with the lower surface of the packing support plate 2. Referring to fig. 1, a gear motor 20 for driving a rotating shaft 18 to rotate is arranged at the top of a rectifying tower 1, a motor frame is fixedly arranged at the top of the rectifying tower 1, the gear motor 20 is fixedly arranged on the motor frame, an output shaft of the gear motor 20 is fixedly connected with the rotating shaft 18 through a coupler, a mechanical seal is arranged at the top of the rectifying tower 1, and the mechanical seal is in running fit with the rotating shaft 18, so that fluid leakage is effectively prevented.
Referring to fig. 5 and 6, based on the above embodiment, the composite filler 6 includes a circular tube 7 and an elastic filler 13 fixedly disposed on top of the circular tube 7. The lower surface integrated into one piece of the pipe body 7 has a plurality of slider 8, and the lower surface of slider 8 is the arc surface, and the arc surface greatly reduced slider 8 and gasket 4's area of contact for compound packing 6 is rotatory more smooth around its own axle center. The sliding piece 8 on the upper round tube body 7 is in sliding fit with the elastic filler 13 in the lower round tube body 7.
The inner wall integrated into one piece of the pipe body 7 has four interior curved pieces 11, and four interior curved pieces 11 are annular evenly setting about the axle center of the pipe body 7, and the arc convex surface of four interior curved pieces 11 is tangent with the outer wall of montant 5, and four interior curved pieces 11 are little with montant 5 area of contact, and frictional resistance is little, can keep the pipe body 7 coaxial with montant 5. The length of the side wall of the circular tube body 7 is equal to the outer diameter of the circular tube body 7, the horizontal section of the inward bending piece 11 is arc-shaped, and the side face hole 12 is of a rectangular structure.
The side wall of the circular tube body 7 is provided with a side hole 12 which allows the gas phase or the liquid phase to impact the arc-shaped concave surface of the inner bending piece 11, and when the gas phase or the liquid phase impacts the arc-shaped concave surface of the inner bending piece 11, the gas phase and the liquid phase can drive the composite filler 6 to rotate around the axis of the composite filler. The composite fillers 6 on the same vertical rod 5 are independent of each other, can rotate around the vertical rod 5, increase the kinetic energy of the liquid in the vertical rod, avoid the liquid from being accumulated locally and ensure the gas-liquid mass transfer efficiency.
The elastic filler 13 comprises an elastic coil 14 fixedly connected with the round tube body 7 and a pressing sheet 15 fixedly connected with the upper surface of the elastic coil 14. The elastic coil 14 is of a cylindrical spiral structure, the upper surface of the elastic coil 14 is a plane, the upper surface of the pressing piece 15 is in sliding contact with the sliding piece 8, a gap exists between the upper surface of the circular tube body 7 positioned above and the lower surface of the circular tube body 7 positioned below, and the gap is a fluid gap channel for allowing fluid to enter the circular tube body 7. The top threaded connection of montant 5 has clamping ring 16, and the lower surface of clamping ring 16 and the upper surface butt of the intussusception piece 11 that is located on the pipe body 7 of the top. The annular groove 9 has been seted up to the top inner wall of the pipe body 7, and the slider 8 on the pipe body 7 of being located the top is located in the annular groove 9 on the pipe body 7 of below, and the fixed cover of elastic filler 13 is located in the annular groove 9, and annular groove 9 cup joints the slider 8 that is located the top for the compound filler 6 that is located on same montant 5 have certain joint strength and keep certain axiality each other, effectively improve compound filler 6 resistance to gas phase and liquid phase impact's ability, help keeping compound filler 6 stack regularity.
The top outer wall of the circular tube body 7 is provided with a through hole 10 communicated with the annular groove 9. Part of the fluid rising from the arched hole 3 contacts the round tube 7, and carries out gas-liquid mass transfer on the round tube 7 and the inward bent piece 11, and the other part of the fluid enters the round tube 7 through the through hole 10 and the fluid gap channel, so that the fluid can carry out further gas-liquid heat transfer and mass transfer on the elastic coil 14. The invention combines the round tube body 7 and the elastic filler 13 to form an internal and external double-effect filler structure, has large surface area and porosity, can better contact fluid, prolongs the contact time of gas and liquid phases, and ensures that the fluid and the filler can effectively transfer mass and heat.
According to the invention, the composite filler 6 can be pressed down by rotating the pressing ring 16, the effect of compressing the elastic filler 13 is realized, and the horizontal positions of the fluid gap channel and the through hole 10 can be changed, so that the horizontal positions of the gap channel and the through hole 10 on different vertical rods 5 are different, and fluid flowing out of the composite filler 6 is easier to strike adjacent composite filler 6, and the heat transfer and mass transfer efficiency is increased.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a rectifying device, includes rectifying column (1), its characterized in that: a plurality of longitudinally distributed filler supporting plates (2) are arranged in the rectifying tower (1), arch holes (3) observed from top to bottom are formed in the filler supporting plates (2), the arch holes (3) in the filler supporting plates (2) are arranged in a left-right staggered mode, a plurality of gaskets (4) are fixedly arranged on the upper surface of the filler supporting plates (2), vertical rods (5) are fixedly arranged on the upper surface of the gaskets (4), a plurality of longitudinally distributed composite fillers (6) are sleeved outside the vertical rods (5), the lowest composite fillers (6) are in sliding butt joint with the upper surfaces of the gaskets (4), and pushing force is applied to the gas phase or liquid rising in the arch holes (3) relative to the composite fillers (6) so that the composite fillers (6) rotate around the axes of the composite fillers (6);
the center of the packing support plate (2) is fixedly and penetratingly provided with a shaft sleeve (17), a rotating shaft (18) fixedly connected with the shaft sleeve (17) is arranged in the rectifying tower (1), a support ring (19) is fixedly sleeved on the inner wall of the rectifying tower (1), the upper surface of the support ring (19) is in sliding connection with the lower surface of the packing support plate (2), and a speed reducing motor (20) for driving the rotating shaft (18) to rotate is arranged at the top of the rectifying tower (1);
The composite filler (6) comprises a circular tube body (7) and elastic filler (13) fixedly arranged at the top of the circular tube body (7), a plurality of sliding parts (8) are integrally formed on the lower surface of the circular tube body (7), the lower surface of the sliding parts (8) is an arc surface or an elliptical arc surface, the sliding parts (8) on the circular tube body (7) above are in sliding fit with the elastic filler (13) in the circular tube body (7) below, four inner bending pieces (11) are integrally formed on the inner wall of the circular tube body (7), the four inner bending pieces (11) are uniformly arranged in an annular mode relative to the axis of the circular tube body (7), the arc convex surfaces of the four inner bending pieces (11) are tangent to the outer wall of the vertical rod (5), and side holes (12) allowing gas phase or liquid phase to impact the arc concave surfaces of the inner bending pieces (11) are formed in the side walls of the circular tube body (7).
2. A rectifying device according to claim 1, characterized in that: the length of the side wall of the circular tube body (7) is equal to the outer diameter of the circular tube body (7), the horizontal section of the inward bending piece (11) is arc-shaped, and the side surface hole (12) is of a rectangular structure.
3. A rectifying device according to claim 1, characterized in that: the elastic filler (13) comprises an elastic coil (14) fixedly connected with the circular tube body (7) and a pressing sheet (15) fixedly connected with the upper surface of the elastic coil (14);
The elastic coil (14) is of a cylindrical spiral structure, the upper surface of the elastic coil (14) is a plane, the upper surface of the pressing sheet (15) is in sliding butt joint with the sliding piece (8), a gap exists between the upper surface of the round tube body (7) above and the lower surface of the round tube body (7) below, the top thread of the vertical rod (5) is connected with the pressing ring (16), and the lower surface of the pressing ring (16) is in butt joint with the upper surface of the inner bending sheet (11) on the uppermost round tube body (7).
4. A rectifying unit according to claim 3, characterized in that: annular groove (9) have been seted up to the top inner wall of the body (7) of pipe, and slider (8) on the body (7) of pipe that are located the top are located in annular groove (9) on the body (7) of pipe below, elastic filler (13) fixed cover is located in annular groove (9), the through-hole (10) with annular groove (9) intercommunication have been seted up to the top outer wall of the body (7).
5. A rectifying device according to claim 1, characterized in that: the tower top of rectifying column (1) is fixed to be linked together and is had condenser (21), the tower cauldron of rectifying column (1) is fixed to be linked together and is had reboiler (22), fixed intercommunication has inlet pipe (23) on the lateral wall of rectifying column (1), on the lateral wall of rectifying column (1) and be located the fixed intercommunication of below of inlet pipe (23) has side stream discharging pipe (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410465602.8A CN118059527B (en) | 2024-04-18 | 2024-04-18 | Rectifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410465602.8A CN118059527B (en) | 2024-04-18 | 2024-04-18 | Rectifying device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118059527A CN118059527A (en) | 2024-05-24 |
| CN118059527B true CN118059527B (en) | 2024-06-18 |
Family
ID=91097501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410465602.8A Active CN118059527B (en) | 2024-04-18 | 2024-04-18 | Rectifying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118059527B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205127436U (en) * | 2015-11-27 | 2016-04-06 | 抚顺齐隆化工有限公司 | Continuous rectification device of ethylene by -product schizolysis carbon nine |
| CN111773753A (en) * | 2020-06-29 | 2020-10-16 | 沈春丰 | Low-energy-consumption energy-saving chemical light-component removing tower |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1223803B (en) * | 1962-02-28 | 1966-09-01 | Julius Montz Fa | Heat and mass transfer column |
-
2024
- 2024-04-18 CN CN202410465602.8A patent/CN118059527B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205127436U (en) * | 2015-11-27 | 2016-04-06 | 抚顺齐隆化工有限公司 | Continuous rectification device of ethylene by -product schizolysis carbon nine |
| CN111773753A (en) * | 2020-06-29 | 2020-10-16 | 沈春丰 | Low-energy-consumption energy-saving chemical light-component removing tower |
Also Published As
| Publication number | Publication date |
|---|---|
| CN118059527A (en) | 2024-05-24 |
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