CN116459544A - Short-path distillation purification method for plasticizer production - Google Patents
Short-path distillation purification method for plasticizer production Download PDFInfo
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- CN116459544A CN116459544A CN202310621537.9A CN202310621537A CN116459544A CN 116459544 A CN116459544 A CN 116459544A CN 202310621537 A CN202310621537 A CN 202310621537A CN 116459544 A CN116459544 A CN 116459544A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 238000000746 purification Methods 0.000 title claims abstract description 15
- 239000004014 plasticizer Substances 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000000526 short-path distillation Methods 0.000 title claims description 6
- 239000007788 liquid Substances 0.000 claims abstract description 106
- 238000004821 distillation Methods 0.000 claims abstract description 54
- 230000005291 magnetic effect Effects 0.000 claims abstract description 46
- 239000004065 semiconductor Substances 0.000 claims abstract description 31
- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 8
- 238000009833 condensation Methods 0.000 claims description 22
- 230000005494 condensation Effects 0.000 claims description 22
- 238000005057 refrigeration Methods 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 4
- 239000002918 waste heat Substances 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Classifications
-
- 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
- B01D3/12—Molecular 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
- B01D3/32—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
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0033—Other features
- B01D5/0042—Thermo-electric condensing; using Peltier-effect
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention relates to the technical field of short-range distillation, in particular to a short-range distillation purification method for plasticizer production; the invention comprises a distillation tower, wherein the distillation tower comprises a tower cap, a barrel and a bottom cover which are sequentially and detachably and fixedly connected from top to bottom, a driving component and a distillation component which are mutually matched are further arranged on the distillation tower, the driving component comprises a power unit and an operation unit, the power unit comprises a first magnetic driving wheel, a second magnetic driving wheel and a ferromagnetic rod, the operation unit comprises a rotating shaft, a connecting frame and a spiral blade, the distillation component comprises a semiconductor refrigerating sheet, a sleeve, an annular grid plate, a condensing rod, a condenser, a liquid storage tank and a liquid supply pump, a feeding pipe which is matched with a liquid guide ring is arranged on the tower cap, a negative pressure pipe is also arranged on the tower cap, a heavy component discharge pipe is arranged on the bottom cover, and a light component discharge pipe is arranged on the sleeve; the invention can effectively solve the problems of high energy consumption, poor production quality and the like in the prior art.
Description
Technical Field
The invention relates to the technical field of short-range distillation, in particular to a short-range distillation purification method for plasticizer production.
Background
At present, the plasticizer is the largest auxiliary agent variety in the modern plastic industry, plays a decisive role in promoting the development of the plastic industry, especially the polyvinyl chloride (PVC) industry, and also has wide application in the fields of synthetic rubber, paint, adhesive, sealing material and the like. Short path distillation has been widely used as a high efficiency distillation separation technique in the scientific and production fields, and has obvious advantages, such as plasticizer, especially in separating high boiling point and heat sensitive substances; however, in the prior art, the application number is: the patent document CN201821518380.8 discloses a small short-range distillation apparatus, which comprises a liquid storage tank, a recovery supporting seat arranged above the liquid storage tank, a condensing barrel arranged above the recovery supporting seat, a top cover arranged above the condensing barrel, a driving motor arranged at the center of the top cover, a rotating frame connected with a rotating shaft of the driving motor, a scraping column arranged on the rotating frame, an evaporation liquid structure arranged below the rotating frame, a collecting tank arranged around the lower end of the inner wall of the condensing barrel, and an outer discharge pipe penetrating the condensing barrel and connected with the collecting tank; the upper end of the side wall of the liquid storage tank is provided with a liquid inlet, the lower end of the side wall of the liquid storage tank is provided with a liquid outlet, and the liquid inlet is connected with a vacuum pump through a pipeline. The invention provides small short-range distillation equipment, which is simple in structure, convenient to use and convenient to move, greatly improves the application range and the use convenience of products, and better meets the market demands.
However, the following disadvantages remain in the course of its practical application:
first, the energy consumption is high because it requires separate heating and cooling systems, which inevitably increases the energy consumption, and its heating mechanism has poor temperature maintenance (i.e., there is a large error between the actual temperature and the set temperature, and its heating mechanism also cannot react in time to rapid changes in temperature).
Secondly, production quality is poor, because of the adoption of a dynamic seal type design between the rotating frame and the top cover, the design inevitably has the defect of lower sealing degree, meanwhile, the sealing is not tight, and the solution is also used for leading external impurities to enter so as to cause pollution, and both problems can have adverse effects on the distillation quality.
Disclosure of Invention
The present invention aims to solve the drawbacks of the prior art and to solve the problems set forth in the background art.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the utility model provides a plasticizer production is with short-range distillation purification device, includes the distillation column, the distillation column includes from last detachable sealed fixed connection's in proper order tower cap, barrel and end cover down, still be equipped with drive assembly and distillation assembly with it mutually supporting on the distillation column.
Still further, the drive assembly includes a power unit and a work unit;
the power unit comprises a first magnetic driving wheel, a second magnetic driving wheel and ferromagnetic rods, wherein the first magnetic driving wheel and the second magnetic driving wheel are respectively connected to the outer side and the inner side of the middle part of the tower cap in a coaxial rotating way, a group of ferromagnetic rods are fixedly connected to the middle part of the tower cap in a sealing way in an equidistant circumferential array way, a group of permanent magnets are respectively distributed on the first magnetic driving wheel and the second magnetic driving wheel in an equidistant circumferential array way in a polarity staggered way, and the magnetic axes of the permanent magnets are parallel to the central axis of the tower cap;
the operation unit comprises a rotating shaft, a connecting frame and a helical blade, wherein the rotating shaft is coaxially fixed at the lower end of the second magnetic driving wheel, the radial connecting frame is arranged at the lower end of the rotating shaft, the helical blade coaxial with the rotating shaft is arranged at the tail end of the connecting frame, and the periphery of the helical blade is in contact with the inner side wall of the cylinder body.
Furthermore, the tower cap is made of a non-magnetic metal material, and a transmission gear can be arranged on the outer side wall of the first magnetic transmission wheel.
Further, the edge of the upper end of the periphery of the spiral blade is in an upwardly convex arc shape.
Still further, distillation subassembly includes semiconductor refrigeration piece, sleeve, annular grid tray, condensation stick, condenser, liquid reserve tank and liquid feed pump, the semiconductor refrigeration piece that matches with it is densely covered on the barrel lateral wall, and semiconductor refrigeration piece is its hot junction and barrel heat conduction formula laminating contact, sleeve coaxial and sealed cross-under is on the end shield, sleeve is located the barrel head department of the inside one end of distillation column and is equipped with the annular grid tray that matches with it, the condensation stick cross-under is on the annular grid tray, and the lower extreme of condensation stick is gone out from telescopic lower extreme sealedly, the middle part of condensation stick lower extreme diapire inwards sunk type has offered the play liquid blind groove coaxial with it, the border of condensation stick lower extreme diapire is served as a circular array mode and has been seted up a set of income liquid blind groove, go into liquid blind groove and go out liquid blind groove intercommunication respectively, the notch department of going into the liquid blind groove all is equipped with the branch pipe, all be connected to into on the liquid pipe, the notch department of going out liquid blind groove is equipped with the output end and liquid feed pump that go out between liquid reserve tank and the liquid feed pump in proper order.
Still further, be equipped with the sealed cowling that is used for sheltering from semiconductor refrigeration piece on the barrel, be equipped with intake pipe and cold air pipe on the sealed cowling, the input of intake pipe is connected with air filter, cold air pipe's output establishes ties forced draught blower and condenser's output in proper order, the input of condenser still is equipped with the waste heat pipe, all be equipped with unidirectional flow valve on the branch pipe.
Still further, be equipped with the liquid guide ring on the inside wall that the barrel is close to its upper end nozzle department, symmetrically distribute a set of drain groove towards barrel inside wall slope on the diapire of liquid guide ring, be equipped with on the tower cap with liquid guide ring complex pan feeding pipe, still be equipped with the negative pressure pipe on the tower cap, be equipped with heavy component discharge pipe on the end cover, be equipped with the light component discharge pipe on the sleeve.
Still further, all be equipped with unidirectional solenoid valve on pan feeding pipe, negative pressure pipe, heavy fraction discharge pipe and the light fraction discharge pipe, the bottom of bottom cover still is equipped with a set of supporting legs symmetrically.
The purification method using the short-path distillation purification device for plasticizer production comprises the following steps:
s1, connecting a negative pressure pipe to a negative pressure pump by a user, and vacuumizing the inside of the distillation tower through the negative pressure pump;
s2, a user is matched with the transmission gear through an external driving motor, so that the first magnetic transmission wheel is driven to rotate, the second magnetic transmission wheel is driven to rotate, and the spiral blades are driven to scrape the inner side wall of the cylinder body;
s3, a user instructs the semiconductor refrigeration piece to start, instructs the blower to start and instructs the liquid supply pump to start through an external controller, so that the inner side wall of the cylinder is heated through heat released by the hot end of the semiconductor refrigeration piece, meanwhile, liquid passing through the condenser is cooled through cold released by the cold end of the semiconductor refrigeration piece, and the cooled liquid is used for cooling the surface of the cooling rod;
s4, the user injects the solution to be distilled into the distillation tower through the feeding pipe for distillation.
Further, in the S2, the rotation direction of the helical blade is helical upward;
in S4, the solution to be distilled is first injected into the liquid guiding ring from the feed pipe, and then uniformly flows out through the liquid leaking groove on the bottom wall of the liquid guiding ring and uniformly flows down along the inner side wall of the cylinder.
Compared with the prior art, the invention has the advantages and positive effects that,
1. the invention sets up the distillation assembly on the distillation column, the distillation assembly includes the semiconductor refrigerating piece, bush, annular grid plate, condensation bar, condenser, liquid storage tank and liquid supply pump, there are semiconductor refrigerating pieces matched with it on the external sidewall of the cylinder, and the semiconductor refrigerating piece is its hot end and heat conduction type laminating contact of cylinder, the bush is coaxial and sealingly connected on the bottom cover, the bush is located in the cylinder mouth department of one end of the distillation column and equipped with the annular grid plate matched with it, the condensation bar is connected on annular grid plate, and the lower end of the condensation bar is outgoing from the lower end of the bush hermetically, the middle part of the bottom wall of the lower end of the condensation bar is inwards sunken to offer a series of liquid inlet blind grooves coaxial with it, the edge of the bottom wall of the condensation bar is in the way of the circular array to offer a series of liquid inlet blind grooves, the liquid inlet blind grooves are communicated with liquid outlet blind grooves through the correspondent guide grooves, the notch department of the liquid inlet blind grooves all has branch pipes, the notch department of the liquid outlet blind grooves has liquid outlet pipes, connect sequentially with the liquid inlet pipe, the output end of the liquid inlet pipe and the liquid inlet pipe, the output pipe is equipped with the liquid inlet pipe, the liquid inlet pipe is equipped with the liquid inlet pipe, the output pipe is equipped with the liquid inlet pipe, the air cooling pipe is connected with the output pipe, the air inlet pipe is equipped with the air-cooling pipe, the air supply pipe is connected with the output pipe, the air supply pipe is connected with the air conditioner, the air conditioner is connected with the output pipe.
Therefore, the solution on the inner wall of the cylinder can be heated by the heat released by the hot end of the semiconductor refrigerating sheet, and meanwhile, the cooling capacity released by the cold end of the semiconductor refrigerating sheet is used for cooling the condensing rod. Thereby achieving the effect of enabling the product of the invention to have lower energy consumption in the practical application process.
2. The invention sets up the driving assembly on the distillation column, the driving assembly includes power unit and operation unit, the power unit includes the first magnetic driving wheel, second magnetic driving wheel and ferromagnetic stick, the operation unit includes the design of spindle, link and helical blade. The structure of the original dynamic seal is changed into the design of static seal through magnetic transmission, so that the distillation tower has better tightness. Thereby achieving the effect of enabling the product of the invention to have better production quality in the practical application process.
Drawings
Fig. 1 is a visual diagram of the present invention at a first viewing angle.
Fig. 2 is a view of the distillation column of the present invention with the seal cap removed from the distillation column at a second view angle.
Fig. 3 is a visual view of the tower cap from a third perspective of the present invention.
Fig. 4 is a schematic view of a barrel of the present invention in partial cross-section at a fourth view angle.
Fig. 5 is a schematic view showing the installation relationship of the sleeve and the condensation bar at a fifth view angle according to the present invention.
Fig. 6 is a visual view of a condensing bar at a sixth viewing angle of the present invention.
Fig. 7 is a schematic view of a condenser rod of the seventh view of the present invention, partially cut away.
Fig. 8 is an enlarged view of area a in fig. 1.
Fig. 9 is an enlarged view of region B in fig. 2.
Reference numerals in the drawings represent respectively: 1-a distillation column; 2-tower caps; 3-a cylinder; 4-a bottom cover; 5-a first magnetic driving wheel; 6-a second magnetic driving wheel; 7-ferromagnetic rods; 8-permanent magnets; 9-rotating shaft; 10-connecting frames; 11-helical blades; 12-a transmission gear; 13-semiconductor refrigerating sheets; 14-a sleeve; 15-annular grid plates; 16-condensing bars; 17-a condenser; 18-a liquid storage tank; 19-a liquid supply pump; 20-discharging a liquid blind groove; 21-entering a liquid blind groove; 22-a guide groove; 23-branch pipes; 24-a liquid inlet pipe; 25-a liquid outlet pipe; 26-a sealed cover; 27-an air inlet pipe; 28-cold air pipe; 29-an air filtration device; 30-a blower; 31-waste heat pipes; 32-a flow valve; 33-a liquid guiding ring; 34-a drain tank; 35-feeding pipe; 36-a negative pressure pipe; 37-heavy component discharge pipe; 38-a light component discharge pipe; 39-solenoid valve; 40-supporting feet.
Description of the embodiments
In order that the above objects, features and advantages of the invention will be more clearly understood, a further description of the invention will be rendered by reference to the appended drawings and examples. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as described herein, and therefore the present invention is not limited to the specific embodiments of the disclosure that follow.
A short-range distillation purification device for plasticizer production of this embodiment, refer to fig. 1-9: the distillation tower 1 comprises a tower cap 2, a cylinder 3 and a bottom cover 4 which are detachably, sealed and fixedly connected in sequence from top to bottom, and a driving assembly and a distillation assembly which are mutually matched are further arranged on the distillation tower 1.
The drive assembly includes a power unit and a work unit.
The power unit comprises a first magnetic driving wheel 5, a second magnetic driving wheel 6 and ferromagnetic rods 7, wherein the first magnetic driving wheel 5 and the second magnetic driving wheel 6 are respectively connected to the outer side and the inner side of the middle part of the tower cap 2 in a coaxial rotating mode, a group of ferromagnetic rods 7 are fixedly connected to the middle part of the tower cap 2 in a sealing mode in a penetrating mode in an equidistant circumferential array mode, a group of permanent magnets 8 are respectively distributed on the first magnetic driving wheel 5 and the second magnetic driving wheel 6 in a mode of equidistant circumferential array and polarity mutual staggering, and magnetic axes of the permanent magnets 8 are parallel to the central axis of the tower cap 2.
The tower cap 2 is made of a non-magnetic metal material, so that shielding interference of the tower cap 2 to the magnetic field between the first magnetic driving wheel 5 and the second magnetic driving wheel 6 is avoided.
The outer side wall of the first magnetic driving wheel 5 is also provided with a driving gear 12, so that a user can cooperate with the driving gear through an external driving device (such as an electric motor) to drive the power unit to operate.
The operation unit comprises a rotating shaft 9, a connecting frame 10 and a helical blade 11, wherein the rotating shaft 9 is coaxially fixed at the lower end of the second magnetic driving wheel 6, the radial connecting frame 10 is arranged at the lower end of the rotating shaft 9, the helical blade 11 coaxial with the rotating shaft 9 is arranged at the tail end of the connecting frame 10, and the periphery of the helical blade 11 is in contact with the inner side wall of the cylinder body 3.
The edge of the upper end of the outer circumference of the spiral blade 11 is in an upwardly convex arc shape, so that the solution can be prevented from being intentionally spread on the spiral blade 11.
The distillation assembly comprises a semiconductor refrigeration piece 13, a sleeve 14, an annular grid plate 15, a condensation rod 16, a condenser 17, a liquid storage tank 18 and a liquid supply pump 19, wherein the semiconductor refrigeration piece 13 matched with the condensation rod 16 is densely distributed on the outer side wall of the cylinder 3, the semiconductor refrigeration piece 13 is in thermal conduction type joint contact with the cylinder 3 at the hot end of the semiconductor refrigeration piece, the sleeve 14 is coaxially and hermetically connected on the bottom cover 4 in a penetrating way, the annular grid plate 15 matched with the sleeve is arranged at the cylinder opening of one end of the sleeve 14 in the distillation tower 1, the condensation rod 16 is connected on the annular grid plate in a penetrating way, the lower end of the condensation rod 16 is hermetically transmitted out from the lower end of the sleeve 14, a liquid outlet blind groove 20 coaxial with the condensation rod is formed in the middle of the bottom wall of the lower end of the condensation rod 16 in a concave way, a group of liquid inlet blind grooves 21 are respectively communicated with the liquid outlet blind grooves 20 in a circumferential array way, branch pipes 23 are respectively arranged at the notch of the liquid inlet blind grooves 21, the branch pipes 23 are connected to liquid inlet pipes 24, the notch of the liquid outlet blind grooves 20 are respectively provided with liquid outlet blind grooves 25, and the liquid inlet pipes 25 are sequentially connected with the liquid storage pump 19, and the liquid storage pump 19 are sequentially connected between the liquid outlet ends of the liquid storage tank and the liquid storage tank 16.
The cylinder 3 is provided with a sealing cover 26 for shielding the semiconductor refrigerating sheet 13, the sealing cover 26 is provided with an air inlet pipe 27 and a cold air pipe 28, the input end of the air inlet pipe 27 is connected with an air filtering device 29 (so that impurities such as dust in the air can be prevented from adhering to the semiconductor refrigerating sheet 13 and affecting the refrigerating and heating performance of the semiconductor refrigerating sheet through air filtration, the output end of the cold air pipe 28 is sequentially connected with an air feeder 30 and the output end of a condenser 17 in series, the input end of the condenser 17 is also provided with a waste heat pipe 31, and the branch pipes 23 are respectively provided with a unidirectional flow valve 32.
The inner side wall of the barrel 3 near the upper end barrel opening is provided with a liquid guide ring 33, a group of liquid leakage grooves 34 inclining towards the inner side wall of the barrel 3 are symmetrically distributed on the bottom wall of the liquid guide ring 33, the tower cap 2 is provided with a feeding pipe 35 matched with the liquid guide ring 33, the tower cap 2 is also provided with a negative pressure pipe 36, the bottom cover 4 is provided with a heavy component discharge pipe 37, and the sleeve 14 is provided with a light component discharge pipe 38.
Notably, are: the feeding pipe 35, the negative pressure pipe 36, the heavy component discharge pipe 37 and the light component discharge pipe 38 are all provided with one-way electromagnetic valves 39.
The bottom of the bottom cover 4 is also symmetrically provided with a set of support feet 40.
The purification method using the short-path distillation purification device for plasticizer production comprises the following steps:
s1, the user connects the negative pressure pipe 36 to a negative pressure pump, and evacuates the inside of the distillation column 1 to vacuum by the negative pressure pump.
S2, a user is matched with the transmission gear 12 through an external driving motor, so that the first magnetic driving wheel 5 is driven to rotate, the second magnetic driving wheel 6 is driven to rotate, and the spiral blades 11 are driven to scrape the inner side wall of the cylinder body 3. Notably, are: the rotation direction of the spiral blade 11 is spiral upwards, so that the residence time of the solution on the inner wall of the cylinder 3 can be prolonged, the solution can be fully distilled and separated, and the spiral blade 11 can be effectively lifted to uniformly scrape the solution on the inner wall of the cylinder 3.
S3, a user instructs the semiconductor refrigeration piece 13 to start, instructs the blower 30 to start and instructs the liquid supply pump 19 to start through an external controller, so that the inner side wall of the cylinder 3 is heated through heat released by the hot end of the semiconductor refrigeration piece 13, meanwhile, liquid passing through the condenser 17 is cooled through cold energy released by the cold end of the semiconductor refrigeration piece 13, and the cooled liquid is used for cooling the surface of the cooling rod.
S4, the user injects the solution to be distilled into the distillation tower 1 through the feeding pipe 35 for distillation. Notably, are: the solution to be distilled is first injected into the liquid guiding ring 33 from the feed pipe 35, and then uniformly flows out through the liquid leaking groove 34 on the bottom wall of the liquid guiding ring 33 and uniformly flows down along the inner side wall of the cylinder 3.
The present invention is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present invention without departing from the technical content of the present invention still belong to the protection scope of the technical solution of the present invention.
Claims (4)
1. A plasticizer production is with short-range distillation purification device which characterized in that: the device comprises a distillation tower (1), wherein the distillation tower (1) comprises a tower cap (2), a cylinder (3) and a bottom cover (4) which are detachably, sealed and fixedly connected in sequence from top to bottom, and a driving assembly and a distillation assembly which are mutually matched with the distillation tower (1) are also arranged on the distillation tower (1);
the driving assembly comprises a power unit and a working unit;
the power unit comprises a first magnetic driving wheel (5), a second magnetic driving wheel (6) and ferromagnetic rods (7), wherein the first magnetic driving wheel (5) and the second magnetic driving wheel (6) are respectively connected to the outer side and the inner side of the middle part of the tower cap (2) in a coaxial rotating mode, a group of ferromagnetic rods (7) are fixedly connected to the middle part of the tower cap (2) in a sealing mode in a penetrating mode in an equidistant circumferential array mode, a group of permanent magnets (8) are respectively distributed on the first magnetic driving wheel (5) and the second magnetic driving wheel (6) in a mode of equidistant circumferential array and mutually staggered in polarity, and the magnetic axes of the permanent magnets (8) are parallel to the central axis of the tower cap (2);
the operation unit comprises a rotating shaft (9), a connecting frame (10) and a helical blade (11), wherein the rotating shaft (9) is coaxially fixed at the lower end of the second magnetic driving wheel (6), the radial connecting frame (10) is arranged at the lower end of the rotating shaft (9), the helical blade (11) coaxial with the rotating shaft (9) is arranged at the tail end of the connecting frame (10), and the periphery of the helical blade (11) is in contact with the inner side wall of the cylinder body (3);
the distillation assembly comprises a semiconductor refrigeration sheet (13), a sleeve (14), an annular grid plate (15), a condensation rod (16), a condenser (17), a liquid storage tank (18) and a liquid supply pump (19), wherein the semiconductor refrigeration sheet (13) matched with the outer side wall of the cylinder (3) is densely distributed on the outer side wall of the cylinder, the semiconductor refrigeration sheet (13) is respectively provided with a liquid outlet blind groove (20) which is coaxial with the cylinder (3) in a heat conduction type, the sleeve (14) is coaxially and hermetically connected on the bottom cover (4) in a penetrating way, the sleeve (14) is provided with the annular grid plate (15) matched with the annular grid plate at the cylinder opening at one end of the interior of the distillation column (1), the condensation rod (16) is connected on the annular grid plate (15) in a penetrating way, the lower end of the condensation rod (16) is hermetically penetrated out from the lower end of the sleeve (14), the middle part of the bottom wall of the lower end of the condensation rod (16) is inwards sunken and is provided with a liquid outlet blind groove (20) which is coaxial with the same, the edge of the bottom wall of the lower end of the condensation rod (16) is coaxially provided with a group of liquid inlet grooves (21) in a circumferential way, liquid inlet grooves (21) are respectively connected with the liquid inlet grooves (23) in a liquid inlet array mode, liquid inlet grooves (21) are respectively connected with the liquid inlet grooves (23) in a liquid inlet mode, and liquid inlet grooves (23) are respectively connected with the liquid inlet grooves (23), a liquid outlet pipe (25) is arranged at the notch of the liquid outlet blind groove (20), and a liquid supply pump (19), a liquid storage tank (18) and a condenser (17) are sequentially connected between the input end of the liquid inlet pipe (24) and the output end of the liquid outlet pipe (25);
the air conditioner is characterized in that a sealing cover (26) for shielding the semiconductor refrigerating sheet (13) is arranged on the cylinder body (3), an air inlet pipe (27) and a cold air pipe (28) are arranged on the sealing cover (26), the input end of the air inlet pipe (27) is connected with an air filtering device (29), the output end of the cold air pipe (28) is sequentially connected with an air feeder (30) and the output end of a condenser (17) in series, the input end of the condenser (17) is also provided with a waste heat pipe (31), and unidirectional flow valves (32) are arranged on the branch pipes (23);
the tower cap (2) is made of a non-magnetic metal material, and a transmission gear (12) is further arranged on the outer side wall of the first magnetic transmission wheel (5);
the edge of the upper end of the periphery of the spiral blade (11) is in an upward convex arc shape.
2. The short-range distillation purification device for plasticizer production according to claim 1, characterized in that a liquid guide ring (33) is arranged on the inner side wall of the barrel body (3) close to the upper end barrel opening, a group of liquid leakage grooves (34) inclining towards the inner side wall of the barrel body (3) are symmetrically distributed on the bottom wall of the liquid guide ring (33), a feeding pipe (35) matched with the liquid guide ring (33) is arranged on the tower cap (2), a negative pressure pipe (36) is further arranged on the tower cap (2), a heavy component discharge pipe (37) is arranged on the bottom cover (4), and a light component discharge pipe (38) is arranged on the sleeve (14).
3. A short-range distillation purification device for plasticizer production according to claim 3 characterized in that the feeding pipe (35), the negative pressure pipe (36), the heavy component discharge pipe (37) and the light component discharge pipe (38) are all provided with unidirectional electromagnetic valves (39), and the bottom of the bottom cover (4) is symmetrically provided with a group of supporting feet (40).
4. A purification method using the short-path distillation purification apparatus for plasticizer production according to claim 3, characterized by comprising the steps of:
s1, connecting a negative pressure pipe (36) to a negative pressure pump by a user, and vacuumizing the inside of the distillation tower (1) through the negative pressure pump;
s2, a user is matched with the transmission gear (12) through an external driving motor, so that the first magnetic driving wheel (5) is driven to rotate, the second magnetic driving wheel (6) is driven to rotate, and the spiral blades (11) are driven to scrape the inner side wall of the cylinder body (3);
s3, a user starts the semiconductor refrigerating sheet (13), the air blower (30) and the liquid supply pump (19) through an external controller, so that the inner side wall of the cylinder (3) is heated through heat released by the hot end of the semiconductor refrigerating sheet (13), meanwhile, liquid passing through the condenser (17) is cooled through cold energy released by the cold end of the semiconductor refrigerating sheet (13), and the cooled liquid is used for cooling the surface of the cooling rod;
s4, a user injects a solution to be distilled into the distillation tower (1) through the feeding pipe (35) for distillation.
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| CN202310621537.9A CN116459544A (en) | 2022-08-10 | 2022-08-10 | Short-path distillation purification method for plasticizer production |
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| CN202210955080.0A CN115253352B (en) | 2022-08-10 | 2022-08-10 | Short-path distillation purification process and system for plasticizer production |
| CN202310621537.9A CN116459544A (en) | 2022-08-10 | 2022-08-10 | Short-path distillation purification method for plasticizer production |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116747547A (en) * | 2023-08-22 | 2023-09-15 | 齐齐哈尔黎明气体有限公司 | Emptying gas recovery device in propane gas supply process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3479120B2 (en) * | 1994-07-09 | 2003-12-15 | 本多電子株式会社 | Ultrasonic alcohol separation device |
| CN205517703U (en) * | 2016-01-22 | 2016-08-31 | 潍坊鑫洋化工有限公司 | Reaction kettle |
| CN207654733U (en) * | 2017-12-01 | 2018-07-27 | 河北金昊再生资源开发有限公司 | A kind of short-distance distiller for producing fatty acid methyl ester |
| CN209049047U (en) * | 2018-09-17 | 2019-07-02 | 四川徽瑞百川科技有限公司 | Small-size short distance distillation plant |
| US10647582B1 (en) * | 2019-09-11 | 2020-05-12 | Taiwan Speciality Chemicals Corporation | High efficiency synthesis and purification recycling system of higher silane |
| CN214260735U (en) * | 2020-11-24 | 2021-09-24 | 靳玉双 | Novel alcohol distillation column equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116747547A (en) * | 2023-08-22 | 2023-09-15 | 齐齐哈尔黎明气体有限公司 | Emptying gas recovery device in propane gas supply process |
| CN116747547B (en) * | 2023-08-22 | 2023-10-24 | 齐齐哈尔黎明气体有限公司 | Emptying gas recovery device in propane gas supply process |
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| CN115253352A (en) | 2022-11-01 |
| CN115253352B (en) | 2023-07-07 |
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