CN116966621A - Continuous rectifying device of sebacic acid - Google Patents
Continuous rectifying device of sebacic acid Download PDFInfo
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- CN116966621A CN116966621A CN202311167563.5A CN202311167563A CN116966621A CN 116966621 A CN116966621 A CN 116966621A CN 202311167563 A CN202311167563 A CN 202311167563A CN 116966621 A CN116966621 A CN 116966621A
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- rectification
- sebacic acid
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- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 239000007788 liquid Substances 0.000 claims abstract description 41
- 238000002156 mixing Methods 0.000 claims abstract description 17
- 230000000087 stabilizing effect Effects 0.000 claims description 18
- 230000005540 biological transmission Effects 0.000 claims description 15
- 239000007791 liquid phase Substances 0.000 abstract description 35
- 239000012071 phase Substances 0.000 abstract description 30
- 230000000694 effects Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 29
- 239000012535 impurity Substances 0.000 description 16
- 239000000463 material Substances 0.000 description 16
- 239000000047 product Substances 0.000 description 12
- 238000009835 boiling Methods 0.000 description 11
- 239000002994 raw material Substances 0.000 description 10
- 238000003825 pressing Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 230000001174 ascending effect Effects 0.000 description 4
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 239000007792 gaseous phase Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 3
- 239000012043 crude product Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
- C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/143—Fractional distillation or use of a fractionation or rectification column by two or more of a fractionation, separation or rectification step
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/32—Other features of fractionating columns ; Constructional details of fractionating columns not provided for in groups B01D3/16 - B01D3/30
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/42—Regulation; Control
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The application relates to a continuous rectification device of sebacic acid, which relates to the technical field of rectification devices, and comprises a rectification tower, a reboiler and a condenser, wherein the reboiler is arranged in the rectification tower, the condenser is arranged outside the rectification tower and is communicated with the rectification tower, a contact plate, an overflow weir and a mixing component are arranged in the rectification tower, the contact plate is connected with the overflow weir, a liquid reducing channel is formed between the overflow weir and the inner wall of the rectification tower at a certain interval, and the mixing component is connected with the contact plate and drives the contact plate to rotate. The mixing component can fully mix the gas phase matters and the liquid phase matters, has good mass transfer and heat exchange effects, and is beneficial to improving the purity of sebacic acid.
Description
Technical Field
The application relates to the technical field of rectifying devices, in particular to a continuous rectifying device for sebacic acid.
Background
Sebacic acid, which is an organic compound, is soluble in water and many organic solvents and has wide application in the chemical industry, has some impurities in crude products after crude completion, and needs further refining and purifying treatment, wherein rectification is a common separation and purifying method and is realized by utilizing the boiling point difference between the sebacic acid and other components.
Specifically, the property that the vapor pressures of the components are different at the same temperature causes the light component (low-boiling-point substance) in the liquid phase to be transferred into the gas phase, the heavy component (high-boiling-point substance) in the gas phase to be transferred into the liquid phase, the gas phase rises along the tower body, the liquid phase descends along the tower body, and countercurrent mass and heat transfer are formed by the rising and descending gas flows, so that the sebacic acid is effectively purified.
In the rectification process, the contact of liquid phase matters and gas phase matters is insufficient, so that mass transfer and heat transfer are not uniform enough, the separation rate is low, and the purity of the purified sebacic acid product is low.
Disclosure of Invention
The application aims to provide a continuous rectification device for improving the purity of sebacic acid.
The application provides a continuous rectification device for sebacic acid, which adopts the following technical scheme:
the utility model provides a continuous rectifier unit of sebacic acid, includes rectifying column, reboiler and condenser, the reboiler is arranged in the rectifying column, the condenser is arranged in the rectifying column the outside and with the rectifying column intercommunication, be provided with contact plate, overflow weir and mixed subassembly in the rectifying column, the contact plate with the overflow weir is connected, the overflow weir with keep the interval to form the fall liquid passageway between the rectifying column inner wall, mixed subassembly with the contact plate is connected and drives the contact plate rotates.
Through adopting above-mentioned technical scheme, when gas phase thing and liquid phase thing carry out mass transfer heat on the column plate, mixing element makes the intensive mixing between gas phase thing and the liquid phase thing, improves the mass transfer heat transfer efficiency between gas phase thing and the liquid phase thing, makes like this that have high boiling point sebacic acid can more fully convert into the liquid phase thing from gas phase thing, and low boiling point impurity is then handled by priority, plays better separation effect, is favorable to improving the purity of sebacic acid.
Optionally, the contact plate includes interior annular plate and outer annular plate, outer annular plate cover is established on the interior annular plate and with interior annular plate rotates to be connected, a plurality of contact hole has been seted up on the interior annular plate.
Through adopting above-mentioned technical scheme, after the liquid phase thing gets into the rectifying column from the inlet, its own inflow is on the contact plate and carries out mass transfer heat transfer with ascending gaseous phase thing, along with the continuous income of liquid phase thing, the liquid level rises and crosses overflow weir from the falling liquid passageway and get into on the next contact plate, and the transfer line only drives interior annular plate and rotate, make gaseous phase thing and liquid phase thing intensive mixing in central region, in the interior annular plate, normally climb and cross overflow weir after the liquid is spread to outer annular plate for the liquid level keeps relatively stable.
Optionally, the mixing assembly includes transfer line and driving piece, the driving piece is arranged in on the rectifying column, the input of transfer line with the driving piece is connected, the output of transfer line pass the rectifying column and with the coaxial fixed connection of inner ring board.
Through adopting above-mentioned technical scheme, the driving piece provides power for the transfer line, makes the transfer line drive inner ring board rotate, and the driving piece is then arranged in outside the rectifying column, reduces the corruption of corrosive substance to the driving piece, also convenient maintenance when the driving piece damages.
Optionally, the transmission rod is provided with a through hole along the length direction, the outer wall of the transmission rod is provided with a plurality of meshes, and the meshes are communicated with the through hole.
The setting of transfer line makes the contact reaction area of gaseous phase thing and liquid phase thing reduce, through adopting above-mentioned technical scheme, gaseous phase thing can partly get into and pass through in the hole and follow the length direction of transfer line and rise to wear out from the mesh, with liquid phase thing in the mixed contact of mesh department, avoided the transfer line to the influence of heat and mass transfer process, improve heat and mass transfer efficiency.
Optionally, the overflow weir includes baffle and flexible cover, flexible cover cup joints on the baffle and the interval is adjustable, flexible cover is kept away from one side slope setting of baffle.
When the inner annular plate rotates, gas-phase matters are dispersed and cause vortex and turbulence on site, the change and diffusion of the fluid flowing roadside are caused, the speed of the gas-phase matters is reduced, and although the gas-phase matters are fully contacted with the liquid-phase matters, when a large amount of liquid-phase matters flow in, the mass transfer heat exchange efficiency is reduced, so that liquid is accumulated on the contact plate.
Optionally, the upper end of rectifying column is connected with voltage regulator device, voltage regulator device includes steady voltage tube, spacing lug and elastic component, the steady voltage tube with the rectifying column intercommunication, spacing lug and elastic component are all arranged in the steady voltage tube, the both ends of elastic component are used in spacing lug and steady voltage tube respectively.
When the gas phase material flows in slowly, and when the liquid phase material flows in a large quantity at this time, the liquid height at the bottom of the tower rises, so that the static pressure of the liquid is increased, the pressure drop in the tower is increased, and the mass transfer and heat exchange efficiency of the rectifying tower is reduced.
Optionally, the condenser includes first condenser pipe, volume storage tank and the second condenser pipe of intercommunication in proper order, first condenser pipe with the volume storage tank respectively with the rectifying column intercommunication.
By adopting the technical scheme, when the gas phase substance passes through the condenser, the sebacic acid with a high boiling point is condensed into a liquid state when passing through the first condensing pipe, the liquid sebacic acid flows into the volume storage tank, the low-boiling-point substance impurities still keep a gaseous state after passing through the first condensing pipe, and the low-boiling-point substance impurities are condensed into a liquid state after passing through the second condensing pipe, and the purity of the sebacic acid is further improved through multistage condensation.
Optionally, the rectifying tower includes first tower body and second tower body, first tower body with the second tower body intercommunication, first tower body with all be connected with on the second tower body reboiler with the condenser.
By adopting the technical scheme, the rectification process is divided into two continuous tower sections, different working temperature and pressure conditions are set for the first tower body and the second tower body, heavier impurity components are removed through the first tower body, lighter impurity components are removed in the second tower body, and the complex mixture can be decomposed into purer components, so that the quality and purity of the product are improved.
Optionally, an access pipe is connected to the volumetric storage tank, and the access pipe can be communicated with the first tower body or the second tower body.
Through adopting above-mentioned technical scheme, when the crude product volume that needs to handle is great, also can equally divide into two parts and throw into two towers in the rectification treatment simultaneously, select different processing methods according to the requirement of product, the commonality is strong.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the rectification tower is internally provided with the mixing component, when the gas phase matters and the liquid phase matters carry out mass transfer and heat transfer on the tower plates, the mixing component enables the gas phase matters and the liquid phase matters to be fully mixed, and improves the mass transfer and heat transfer efficiency between the gas phase matters and the liquid phase matters, so that the sebacic acid with a high boiling point can be more fully converted into the liquid phase matters from the gas phase matters, and impurities with a low boiling point are preferentially treated, thereby having better separation effect and being beneficial to improving the purity of the sebacic acid.
2. The regulating device in the liquid phase material continuous feeding device drives the relative outer annular plate to rotate, the outer annular plate keeps relative static, when liquid phase material enters the rectifying tower from the liquid inlet, the liquid phase material flows into the contact plate and carries out mass transfer and heat transfer with ascending gas phase material, along with continuous feeding of the liquid phase material, the liquid level rises and passes through the overflow weir to enter the next contact plate from the liquid falling channel, the regulating device only drives the inner annular plate to rotate, so that the gas phase material and the liquid phase material are fully mixed in the central area, namely, the inner annular plate, and the liquid normally climbs and climbs over the overflow weir after spreading to the outer annular plate, so that the liquid level is kept relatively stable.
3. The rectification device is arranged in a double-tower structure, the rectification process is divided into two continuous tower sections, different working temperature and pressure conditions are set for the first tower body and the second tower body, heavier impurity components are removed through the first tower body, lighter impurity components are removed in the second tower body, a complex mixture can be decomposed into purer components, the product quality and purity are improved, when the amount of coarse products to be treated is large, the coarse products can be equally divided into two parts and put into the two tower bodies for rectification treatment at the same time, different treatment modes are selected according to the requirements of the products, and the universality is strong.
Drawings
FIG. 1 is a schematic flow chart of a continuous rectification apparatus for sebacic acid in example 1 of the present application.
FIG. 2 is a schematic diagram showing another flow path structure of the continuous rectification apparatus for sebacic acid in example 1 of the present application.
FIG. 3 is a schematic diagram showing a partial sectional structure of a continuous rectification apparatus for sebacic acid in example 1 of the present application.
FIG. 4 is a schematic flow chart of a continuous rectification apparatus for sebacic acid in example 2 of the present application.
FIG. 5 is a schematic view showing a partial sectional structure of a continuous rectification apparatus for sebacic acid in example 3 of the present application.
In the figure, 1, a rectifying tower; 11. a first tower; 111. a feed inlet; 112. an air outlet; 113. a liquid inlet; 114. a collection port; 12. a second tower; 2. a reboiler; 3. a condenser; 31. a first condenser tube; 32. a volumetric storage tank; 33. a second condenser tube; 4. a contact plate; 41. an inner ring plate; 42. an outer ring plate; 43. a contact hole; 44. a first connection plate; 45. a second connecting plate; 5. an overflow weir; 51. a baffle; 52. a telescopic sleeve; 53. a first platen; 54. a second pressing plate; 6. a mixing assembly; 61. a transmission rod; 611. penetrating the hole; 612. a mesh; 62. a driving member; 7. a voltage stabilizing device; 71. a voltage stabilizing tube; 72. a limit bump; 73. an elastic member; 74. adjusting a turntable; 8. an access tube; 81. a first interface; 82. a second interface; 9. a recovery device; 91. a first collection tank; 92. a second collection tank; 10. a gas-liquid separator.
Detailed Description
The present application will be described in further detail with reference to fig. 1 to 5.
Example 1:
the utility model provides a continuous rectifier unit of sebacic acid, refer to fig. 1, including rectifying column 1, reboiler 2 and condenser 3, in rectifying column 1 was arranged in to reboiler 2, condenser 3 was arranged in rectifying column 1 outside and with rectifying column 1 intercommunication, wherein, rectifying column 1 adopts double column structure, rectifying column 1 includes first tower body 11 and second tower body 12, first tower body 11 and second tower body 12 intercommunication all are connected with reboiler 2 and condenser 3 on first tower body 11 and the second tower body 12.
Referring to fig. 1, a first tower 11 is provided with a feed inlet 111, an air outlet 112 and a liquid inlet 113, wherein the feed inlet 111 is provided at a middle section of the first tower 11, the air outlet 112 and the liquid inlet 113 are provided at a top end of the first tower 11, the liquid inlet 113 is used for introducing sebacic acid raw material, the raw material is in a liquid state and descends stepwise along the first tower 11, the raw material entering the first tower 11 is heated by a reboiler 2 to form a gas phase object, the ascending gas phase object and the descending liquid phase object carry out mass and heat transfer, and the gas phase object formed after the purification of the first tower 11 exits the rectifying tower 1 from the air outlet 112.
Referring to fig. 1, the condenser 3 includes a first condenser tube 31, a volume storage tank 32 and a second condenser tube 33 which are sequentially communicated, wherein the first condenser tube 31 and the volume storage tank 32 are respectively communicated with the rectifying tower 1, an inlet end of the first condenser tube 31 is communicated with an air outlet 112 of the first tower body 11, after a gas phase substance formed after being purified by the first tower body 11 enters the first condenser tube 31, components with relatively higher boiling points are liquefied and collected in the volume storage tank 32, and components with relatively lower boiling points continue to keep in a gaseous state to enter the second condenser tube 33 and finally are liquefied.
Referring to fig. 1, a continuous rectification apparatus for sebacic acid further includes a recovery apparatus 9, the recovery apparatus 9 includes a first collecting tank 91 and a second collecting tank 92, wherein two collecting ports 114 are formed at the bottom ends of the first tower 11 and the second tower 12, the two first collecting tanks 91 are respectively communicated with the collecting ports 114 at the first tower 11 and the second tower 12, liquid impurities with higher boiling points in the rectification tower 1 are collected, and the second collecting tank 92 is communicated with the outlet end of the second condensing tube 33, so as to collect gas impurities with lower boiling points.
Referring to fig. 1 and 2, the access pipe 8 is connected to the volume tank 32, one end of the access pipe 8 is connected to the volume tank 32, and the other end of the access pipe 8 can be connected to the first tower 11 or the second tower 12, that is, the access pipe 8 has two connection forms.
Referring to fig. 1, when the processing amount of the raw materials is large, the raw materials are divided into two parts and poured into the first tower 11 and the second tower 12 respectively, the inlet end of the first condenser tube 31 is communicated with the air outlets 112 of the first tower 11 and the second tower 12 respectively, the other end of the access tube 8 is provided with a first interface 81 and a second interface 82, the first interface 81 is communicated with the liquid inlet 113 of the first tower 11, the second interface 82 is communicated with the liquid inlet 113 of the second tower 12, so that the solution in the volume storage tank 32 is partially refluxed to the first tower 11 and the second tower 12 respectively for further purification, the reflux ratio is specifically set according to practical situations, and a valve can be arranged at the first interface 81 and the second interface 82 for control.
Referring to fig. 2, when the amount of raw material processed is small, raw materials are poured into the first tower 11, the liquid inlets 113 of the first tower 11 and the second tower 12 are closed, any one of the first interface 81 or the second interface 82 is communicated with the liquid inlet 111 of the second tower 12, different working temperature and pressure conditions are set for the first tower 11 and the second tower 12, the first tower 11 removes heavier impurity components, and the solution purified and flowing into the volume storage tank 32 enters the second tower 12 to further purify and remove lighter impurity components still existing in the solution.
During processing, different connection modes are selected according to the requirements of the product, and it is to be noted that when the connection mode with less raw material processing amount is selected, the product processed by the second tower body 12 can be introduced into the condenser 3, or a condenser 3 can be further added to be communicated with the second tower body 12, and in this embodiment, a mode of additionally adding a condenser 3 is further added to further improve the quality and purity of the product.
Referring to fig. 3, the first tower body 11 and the second tower body 12 are respectively provided with a contact plate 4, overflow weirs 5 and a mixing assembly 6, wherein the number of the contact plates 4 and the overflow weirs 5 is multiple, the contact plates 4 and the overflow weirs 5 are in one-to-one correspondence, the contact plates 4 are connected with the overflow weirs 5, the overflow weirs 5 and the inner wall of the rectifying tower 1 keep a space to form a liquid-lowering channel, and the mixing assembly 6 is connected with the contact plates 4 and drives the contact plates 4 to rotate.
Referring to fig. 3, the contact plates 4 and the overflow weirs 5 are sequentially disposed along the height direction of the rectifying tower 1, wherein adjacent contact plates 4 are disposed opposite to each other and connected with the inner wall of the rectifying tower 1 to form a serpentine liquid flow path, further, the contact plates 4 comprise an inner ring plate 41 and an outer ring plate 42, the outer ring plate 42 is sleeved on the inner ring plate 41 and is rotationally connected with the inner ring plate 41, a plurality of contact holes 43 are formed in the inner ring plate 41, and ascending gas phase passes through the contact holes 43 and is mixed with liquid phase on the contact plates 4 for heat and mass transfer.
Referring to fig. 1 and 3, the number of the mixing members 6 is two, one of which is connected to the first tower 11 and the other of which is connected to the second tower 12, specifically, the connection relationship between the mixing members 6 and the first tower 11 is as follows: the mixing assembly 6 includes a driving rod 61 and a driving member 62, the driving member 62 is fixedly connected to the top end of the first tower body 11 through a bolt, the driving member 62 may be a motor, an air motor or a hydraulic motor, in this embodiment, the motor is preferably used as the driving member 62, an input end of the driving rod 61 is connected to the driving member 62, an output end of the driving rod 61 passes through the first tower body 11 and is connected to the inner ring plate 41, and it is to be noted that a connection relationship between the other mixing assembly 6 and the second tower body 12 is the same as the connection relationship, which is not repeated herein.
Referring to fig. 3, a through hole 611 is formed on the transmission rod 61 along the length direction, a plurality of meshes 612 are formed on the outer wall of the transmission rod 61, the meshes 612 are communicated with the through hole 611, specifically, the through hole 611 may be formed in plurality, the plurality of through holes 611 are uniformly distributed on the transmission rod 61, the cross-sectional flow area through which the gas phase material can effectively pass is further improved, in other embodiments, the aperture of the through hole 611 may be formed into one, the aperture of the through hole 611 is close to the outer diameter of the transmission rod 61, and a filler layer is plugged into the through hole 611, so that the effects of passing the gas phase material and transferring mass and heat with the liquid phase material can be achieved.
Referring to fig. 3, the overflow weir 5 includes a baffle plate 51 and a telescopic sleeve 52, the telescopic sleeve 52 is sleeved on the baffle plate 51 and has an adjustable interval, one side of the telescopic sleeve 52 away from the baffle plate 51 is obliquely arranged, specifically, two sides of the telescopic sleeve 52 are fixedly connected with a first pressing plate 53 and a second pressing plate 54, the first pressing plate 53, the second pressing plate 54 and the telescopic sleeve 52 are integrally formed, wherein the first pressing plate 53 is arranged on one side away from the liquid lowering channel, and the second pressing plate 54 is arranged on one side close to the liquid lowering channel.
Referring to fig. 3, the first pressure plate 53 is lower than the second pressure plate 54 in the vertical direction, an elastic member 73 is disposed in the telescopic sleeve 52, the elastic member 73 in the telescopic sleeve 52 is a high-elasticity sponge, in other embodiments, springs may be used, two ends of the elastic member 73 respectively act on the telescopic sleeve 52 and the baffle plate 51, when the liquid level rises, the liquid phase material presses the first pressure plate 53, so that the elastic member 73 contracts, the liquid phase material flows from the liquid falling channel to the next contact plate 4 through the telescopic sleeve 52, and further, the second pressure plate 54 is in an arc-shaped arrangement to guide the liquid phase material.
Referring to fig. 3, a pressure stabilizing device 7 is connected to a side wall of an upper end portion of the rectifying tower 1, the pressure stabilizing device 7 includes a pressure stabilizing tube 71, a limiting projection 72 and an elastic member 73, the pressure stabilizing tube 71 is communicated with the rectifying tower 1, the limiting projection 72 and the elastic member 73 are both disposed in the pressure stabilizing tube 71, two ends of the elastic member 73 respectively act on the limiting projection 72 and the pressure stabilizing tube 71, when the internal pressure of the rectifying tower 1 changes, the elastic member 73 adaptively stretches or contracts to adjust the pressure, an adjusting turntable 74 is further coaxially disposed on the pressure stabilizing tube 71, the adjusting turntable 74 is in threaded connection with the pressure stabilizing tube 71, one end of the adjusting turntable 74 stretches into the pressure stabilizing tube 71 and abuts against the elastic member 73, and the elastic member 73 contracts to adjust the sensitivity of the pressure stabilizing device 7.
The implementation principle of the embodiment 1 of the application is as follows: when raw materials are introduced into the rectifying tower 1, the driving piece 62 is started, the transmission rod 61 drives the contact plate 4 to rotate, so that gas phase matters and liquid phase matters are fully mixed, the mass and heat transfer efficiency between the gas phase matters and the liquid phase matters is improved, so that high-boiling-point sebacic acid can be more fully converted into the liquid phase matters from the gas phase matters, impurities with low boiling points are preferentially treated, a better separation effect is achieved, the purity of sebacic acid is improved, in addition, the rectifying tower 1 is provided with a double-tower structure, the treatment capacity of the raw materials can be increased through simultaneous rectification, a secondary rectifying system can be formed, heavier impurity components are removed through the first tower 11, and lighter impurity components are removed in the second tower 12, so that the quality and the purity of products are further improved.
Example 2:
referring to fig. 4, the present embodiment 2 differs from embodiment 1 in that the volume tank 32 is no longer connected to the second condensation duct 33, the gas-liquid separator 10 is provided between the first condensation duct 31 and the volume tank 32, the gas-liquid separator 10 is capable of separating a gas portion and a liquid portion, and the gas-liquid separator 10 has a first connection port and a second connection port, wherein the gas-liquid separator 10 communicates with the volume tank 32 through the first connection port and communicates with the second condensation duct 33 through the second connection port.
The implementation principle of the embodiment 2 of the application is as follows: the liquefied part passing through the first condenser tube 31 is separated from the part which keeps in the gaseous state through the gas-liquid separator 10 and is respectively introduced into the volume storage tank 32 and the second condenser tube 33, so that the condition that the liquid part is carried out of the volume storage tank 32 by the gaseous part is reduced, and the rectification efficiency is improved.
Example 3:
referring to fig. 5, the difference between the embodiment 3 and the embodiment 1 is that the contact plate 4 may be split into a first connecting plate 44 and a second connecting plate 45, wherein the first connecting plate 44 is connected with the overflow weir 5, the second connecting plate 45 is disposed on the first connecting plate 44, the first connecting plate 44 is circular-plate-shaped, the outer diameter of the first connecting plate 44 is larger than that of the second connecting plate 45, the contact holes 43 are formed in the central portion of the first connecting plate 44 and the second connecting plate 45, and the transmission rod 61 sequentially passes through the first connecting plate 44 and the second connecting plate 45 and drives the second connecting plate 45 to move.
The implementation principle of the embodiment 3 of the application is as follows: the relative displacement of the contact holes 43 on the first connecting plate 44 and the second connecting plate 45 is realized through the transmission shaft to adjust the aperture of the contact plate 4 so as to rectify other types of material products and improve the universality of the continuous rectification device of the sebacic acid.
The embodiments of the present application are all preferred embodiments of the present application, and are not intended to limit the scope of the present application, wherein like reference numerals are used to refer to like elements throughout. Therefore: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (9)
1. The utility model provides a continuous rectifier unit of sebacic acid, includes rectifying column (1), reboiler (2) and condenser (3), its characterized in that, reboiler (2) are arranged in rectifying column (1), condenser (3) are arranged in rectifying column (1) the outside and with rectifying column (1) intercommunication, be provided with contact plate (4), overflow weir (5) and hybrid module (6) in rectifying column (1), contact plate (4) with overflow weir (5) are connected, overflow weir (5) with keep the interval between rectifying column (1) inner wall to form the falling liquid passageway, hybrid module (6) with contact plate (4) are connected and drive contact plate (4) rotate.
2. The continuous rectification device for sebacic acid according to claim 1, wherein the contact plate (4) comprises an inner annular plate (41) and an outer annular plate (42), the outer annular plate (42) is sleeved on the inner annular plate (41) and is rotationally connected with the inner annular plate (41), and a plurality of contact holes (43) are formed in the inner annular plate (41).
3. Continuous rectification apparatus as claimed in claim 2, characterized in that said mixing assembly (6) comprises a transmission rod (61) and a driving element (62), said driving element (62) being arranged on said rectification column (1), the input end of said transmission rod (61) being connected to said driving element (62), the output end of said transmission rod (61) passing through said rectification column (1) and being fixedly connected coaxially to said inner annular plate (41).
4. A continuous rectification apparatus as claimed in claim 3, wherein said transmission rod (61) is provided with through holes (611) along a longitudinal direction, said transmission rod (61) is provided with a plurality of mesh openings (612) on an outer wall thereof, and said mesh openings (612) are communicated with said through holes (611).
5. The continuous rectification device for sebacic acid according to claim 1, wherein the overflow weir (5) comprises a baffle plate (51) and a telescopic sleeve (52), the telescopic sleeve (52) is sleeved on the baffle plate (51) and has adjustable interval, and one side of the telescopic sleeve (52) away from the baffle plate (51) is obliquely arranged.
6. The continuous rectification device for sebacic acid according to claim 1, wherein the upper end of the rectification tower (1) is connected with a voltage stabilizing device (7), the voltage stabilizing device (7) comprises a voltage stabilizing tube (71), a limiting lug (72) and an elastic piece (73), the voltage stabilizing tube (71) is communicated with the rectification tower (1), the limiting lug (72) and the elastic piece (73) are both arranged in the voltage stabilizing tube (71), and two ends of the elastic piece (73) respectively act on the limiting lug (72) and the voltage stabilizing tube (71).
7. Continuous rectification apparatus according to claim 1, characterized in that said condenser (3) comprises a first condenser tube (31), a volumetric storage tank (32) and a second condenser tube (33) in succession, said first condenser tube (31) being in communication with said rectification column (1).
8. The continuous rectification device for sebacic acid according to claim 7, wherein said rectification column (1) comprises a first column (11) and a second column (12), said first column (11) being in communication with said second column (12), said reboiler (2) being connected in both said first column (11) and said second column (12).
9. Continuous rectification apparatus according to claim 8, characterized in that said volumetric storage tank (32) is connected with an access pipe (8), said access pipe (8) being able to communicate with said first tower (11) or with said second tower (12).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311167563.5A CN116966621A (en) | 2023-09-12 | 2023-09-12 | Continuous rectifying device of sebacic acid |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311167563.5A CN116966621A (en) | 2023-09-12 | 2023-09-12 | Continuous rectifying device of sebacic acid |
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| CN202311167563.5A Pending CN116966621A (en) | 2023-09-12 | 2023-09-12 | Continuous rectifying device of sebacic acid |
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Cited By (1)
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|---|---|---|---|---|
| CN117442991A (en) * | 2023-12-22 | 2024-01-26 | 甘肃克胜阡耘生物科技有限公司 | CCMP production-based water separation rectifying tower and use method thereof |
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Application publication date: 20231031 |