CN117654090B - Separation equipment for vinylidene fluoride preparation - Google Patents
Separation equipment for vinylidene fluoride preparation Download PDFInfo
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- CN117654090B CN117654090B CN202311749198.9A CN202311749198A CN117654090B CN 117654090 B CN117654090 B CN 117654090B CN 202311749198 A CN202311749198 A CN 202311749198A CN 117654090 B CN117654090 B CN 117654090B
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- pipe
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- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 238000000926 separation method Methods 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 158
- 239000000463 material Substances 0.000 claims abstract description 68
- 239000000945 filler Substances 0.000 claims abstract description 58
- 238000012856 packing Methods 0.000 claims description 45
- 238000007789 sealing Methods 0.000 claims description 21
- 238000003825 pressing Methods 0.000 claims description 19
- 238000004140 cleaning Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 7
- 229920001971 elastomer Polymers 0.000 claims description 7
- 239000005060 rubber Substances 0.000 claims description 7
- 238000000197 pyrolysis Methods 0.000 claims description 6
- 238000005485 electric heating Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000000178 monomer Substances 0.000 claims description 4
- 238000011221 initial treatment Methods 0.000 claims description 2
- 230000013011 mating Effects 0.000 claims description 2
- 238000004321 preservation Methods 0.000 claims 1
- 238000009826 distribution Methods 0.000 abstract description 3
- 238000009827 uniform distribution Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 description 9
- 238000005336 cracking Methods 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000012043 crude product Substances 0.000 description 2
- 229920001973 fluoroelastomer Polymers 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000007350 electrophilic reaction Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000007344 nucleophilic reaction Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 238000011282 treatment Methods 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
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/30—Fractionating columns with movable parts or in which centrifugal movement is caused
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C17/00—Preparation of halogenated hydrocarbons
- C07C17/38—Separation; Purification; Stabilisation; Use of additives
- C07C17/383—Separation; Purification; Stabilisation; Use of additives by distillation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention relates to the technical field of vinylidene fluoride preparation, in particular to separation equipment for vinylidene fluoride preparation, which comprises a tower body and a rectifying unit, wherein the tower body is matched with the rectifying unit, so that when liquid is subjected to liquid separation and liquid redistribution, the flow path of the liquid is increased, the angle difference between a flow dividing frame and a liquid redistributor on the same projection surface is utilized, so that the liquid is uniformly distributed on a first filler material and a second filler material and is not overlapped, the flow path of the liquid is increased, and meanwhile, a driving frame is matched with a linkage frame, so that the flow dividing frame and the liquid redistributor synchronously rotate, the further uniform distribution of the liquid on the first filler material and the second filler material is ensured, the thickness uniformity of the first filler material and the second filler material is ensured, the uneven distribution of gas and liquid in the filler layer is prevented, the mass transfer efficiency is reduced, and the separation efficiency of the equipment is influenced.
Description
Technical Field
The invention relates to the technical field of vinylidene fluoride preparation, in particular to separation equipment for vinylidene fluoride preparation.
Background
Vinylidene fluoride is a monomer which is slightly ether-smelling, colorless and flammable and is inferior to tetrafluoroethylene mass production in the production of fluorine-containing organic compounds, and has nucleophilic reaction capability and electrophilic reaction capability, so that the vinylidene fluoride is mainly used for producing polyvinylidene fluoride and fluororubber, and the polyvinylidene fluoride has excellent weather resistance, chemical stability and heat resistance, can be used as liners, corrosion-resistant diaphragms of chemical pipelines, pipes, valves, pumps, storage tanks and the like, sealing parts, gears, bearings and the like for chemical machinery, has a plurality of important uses in the electronic and electric industry, and also is used as a special solvent, and the fluororubber is suitable for manufacturing sealing products, adhesive tapes, rubber tapes, diaphragms, impregnating products, protective products and the like which are resistant to high temperature, oil resistance and chemical corrosion resistance.
The current advanced production process in China uses R142b as a raw material, cracking gas containing VDF is generated by normal pressure cracking reaction in a nickel pipe at high temperature, and vinylidene fluoride finished products are obtained by rectification and purification, and the main procedures comprise cracking, water washing, alkali washing, drying, fractionation and rectification, wherein the rectification procedure is to send a crude product into a light component removal tower, the gas phase component at the top of the tower is condensed by a condenser, the gas phase component enters a solvent absorption tower, part of impurities in the crude product are absorbed by acetone, the acetone is then sent to a buffer tank, the heavy component at the bottom of the tower enters a product rectification tower, the gas phase component obtained by condensation of the tower top condenser is sent to the buffer tank, the gas phase component at the top of the tower enters a finished product condenser for condensation, and the gas phase component at the top of the tower enters a finished product metering tank after condensation of the finished product condenser and then enters a finished product storage tank.
When the rectification is carried out in the traditional rectifying tower, as the liquid flows on the filler material, the fixed position on the surface of the filler material is easily impacted to generate a groove due to the fact that the liquid flows at the fixed position for a long time, so that the thickness of the filler material is uneven, and when the liquid flows downwards in the filler material, the liquid gradually flows towards the tower wall, namely, the wall flow phenomenon can lead to uneven gas-liquid distribution in the filler layer, so that the mass transfer efficiency is reduced, and the separation efficiency of equipment is affected.
Disclosure of Invention
In view of the above problems, embodiments of the present application provide a separation device for preparing vinylidene fluoride, so as to solve the technical problems in the related art that when a liquid flows on a packing material, the fixed position on the surface of the packing material is impacted to generate a groove due to long-time flowing at the fixed position, so that the thickness of the packing material is uneven, and when the liquid flows downwards in the packing material, the liquid gradually flows towards the tower wall, that is, a wall flow phenomenon, all the liquid and gas in the packing layer are unevenly distributed, so that the mass transfer efficiency is reduced, and the separation efficiency of the device is affected. In order to achieve the above purpose, the embodiment of the present application provides the following technical solutions.
The first aspect of the embodiment of the application provides separation equipment for preparing vinylidene fluoride, which comprises a tower body and a rectifying unit, wherein the rectifying unit is arranged in the tower body and is used for treating pyrolysis gas subjected to preliminary treatment to obtain vinylidene fluoride monomers; the upper end of the tower body is fixedly provided with an air outlet pipe for discharging the rectified gas out of the tower body, the lower end of the tower body is fixedly provided with a liquid outlet pipe for discharging the rectified liquid out of the tower body, the left end of the lower side of the tower body is fixedly provided with an air inlet pipe for introducing the gas into the tower body, the right end of the upper side of the tower body is fixedly provided with a liquid inlet pipe for introducing the liquid into the tower body, the inner part of the tower body is fixedly provided with an electric heating wire for heating the inner part of the tower body, the outer end of the tower body is fixedly provided with a heat-insulating shell for insulating the inner part of the tower body, the left end of the liquid inlet pipe is fixedly provided with a linkage frame, the front and back of the linkage frame are symmetrically and fixedly provided with a diversion frame for diverting the liquid, and the lower end of the diversion frame is uniformly and fixedly provided with a liquid outlet frame I for further diverting the diverted liquid; the rectification unit comprises a driving frame, wherein the driving frame is arranged on a tower body, the driving frame is fixedly connected with a linkage frame, a liquid redistributor is fixedly installed on the driving frame in a bilateral symmetry mode, a liquid outlet frame II is uniformly and fixedly installed at the lower end of the liquid redistributor, a filler support plate I is fixedly installed on the inner wall of the tower body and positioned at the upper side of the liquid redistributor, a filler material I is placed at the upper end of the filler support plate I, a filler pressing plate I is placed at the upper end of the filler material I, a filler support plate II is arranged at the inner wall of the tower body and positioned below the liquid redistributor, a filler material II is placed at the upper end of the filler support plate II, and a filler pressing plate II is placed at the upper end of the filler material II.
According to the embodiment of the invention, the linkage frame comprises a vertical pipeline, the left end of the liquid inlet pipe is fixedly arranged in the tower body, the lower end of the vertical pipeline is rotationally connected with a main pipeline, the outer end of the main pipeline is uniformly and fixedly provided with branch posts, the tail ends of the branch posts are fixedly provided with ring gears together, and the ring gears are rotationally connected with the tower body.
According to the embodiment of the invention, the split-flow rack comprises branch pipes, semicircular pipe groups are symmetrically and fixedly arranged in front of and behind the main pipe, each semicircular pipe group is formed by fixedly connecting a plurality of mutually perpendicular and staggered branch pipes, cylindrical through holes are formed in the lower ends of the branch pipes, round baffles are rotatably connected in the cylindrical through holes through pin shafts, torsion springs are sleeved on the pin shafts, one ends of the torsion springs are fixedly connected with the round baffles, the other ends of the torsion springs are fixedly connected with the branch pipes, the structure of the liquid redistributors is the same as that of the split-flow rack, and the angle between projections of the liquid redistributors and the split-flow rack on the same horizontal plane is 45 degrees only.
According to the embodiment of the invention, the first liquid outlet frame comprises a conical pipeline, the lower end of the branch pipeline is fixedly arranged below the cylindrical through hole, the lower end of the conical pipeline is rotationally connected with a rotary cleaning ball, the lower end of the branch pipeline is fixedly arranged outside the rotary cleaning ball, the first circular truncated cone-shaped guide cylinder is fixedly arranged at the inner end of the first circular truncated cone-shaped guide cylinder, the diameter of the bottom surface of the lower end of the second circular truncated cone-shaped guide cylinder is larger than that of the bottom surface of the upper end of the first circular truncated cone-shaped guide cylinder, the diameter of the bottom surface of the second circular truncated cone-shaped guide cylinder is smaller than that of the bottom surface of the upper end of the first circular truncated cone-shaped guide cylinder, the third circular truncated cone-shaped guide cylinder is fixedly arranged at the bottom surface of the second circular truncated cone-shaped guide cylinder, the second circular truncated cone-shaped guide cylinder is uniformly provided with the second arc-shaped through holes, the second arc-shaped guide cylinder is staggered with the first arc-shaped through holes, and the second liquid outlet frame has the same structure as the first liquid outlet frame.
According to the embodiment of the invention, the pipe orifices of the air outlet pipe, the liquid outlet pipe, the air inlet pipe and the liquid inlet pipe are respectively provided with annular grooves, rubber rings are fixedly arranged in the annular grooves, the outer ends of the pipe orifices of the air outlet pipe, the liquid outlet pipe, the air inlet pipe and the liquid inlet pipe are respectively connected with a threaded sleeve in a threaded connection mode, and sealing strips are fixedly arranged in the threaded grooves on the threaded sleeves.
According to the embodiment of the invention, the driving frame comprises a conical collecting cylinder, the inner wall of the tower body is rotationally connected with the conical collecting cylinder, the lower end of the conical collecting cylinder is fixedly provided with a vertical cylinder, the left and right sides of the vertical cylinder are symmetrically and fixedly provided with liquid redistributors, the outer end of the upper side of the conical collecting cylinder is fixedly provided with a linkage ring, the linkage ring and the ring gear are fixedly connected together through a linkage post, the upper end of the tower body is fixedly provided with a motor I through a motor base, an output shaft of the motor I is fixedly provided with a gear I through a coupling, the tower body is rotationally connected with a gear II, the gear I is meshed with the gear II, the diameter of the gear II is larger than that of the gear I, the lower end of the vertical cylinder is fixedly provided with a horizontal pipeline, the angle between the axis of the horizontal pipeline and the projection of the main pipeline on the horizontal plane is 45 degrees, the left and right sides of the horizontal pipeline are symmetrically and fixedly provided with liquid redistributors, the lower end of the gear II is fixedly provided with a rotating post, the matching gear is fixedly arranged on the rotating post, and the matching gear is meshed with the ring gear.
According to the embodiment of the invention, the first filler supporting plate comprises a positioning ring plate, wherein the positioning ring plate is fixedly arranged on the inner wall of the tower body and above the liquid redistributor, the grid circular plates are uniformly and fixedly arranged at the inner ends of the positioning ring plates, a plurality of sealing plates are fixedly arranged on grids on the grid circular plates, hollow grids are arranged between the sealing plates on the same grid circular plate, and the sealing plates on adjacent grid circular plates are not overlapped on the same projection surface.
According to the embodiment of the invention, the first packing pressing plate comprises an annular pressing plate, the upper end of the first packing material is provided with the annular pressing plate, and the inner ends of the annular pressing plates are uniformly and fixedly provided with the mutually-staggered inclined Z-shaped plates.
From the above technical scheme, the invention has the following advantages:
1. In the invention, the liquid is split through the branch pipeline, when the content pressure of the water in the branch pipeline reaches the maximum pressure born by the circular baffle, the circular baffle rotates to enable the liquid to smoothly flow out of the cylindrical through hole and enter the first liquid outlet frame, and in order to ensure full contact between the liquid and the pyrolysis gas and complete mass transfer, the angle between the projection of the liquid redistributor and the split frame on the same horizontal plane is 45 degrees, so that the generation of wall flow phenomenon is reduced, the mass transfer efficiency is improved, and the separation efficiency of equipment is improved.
2. According to the invention, liquid is gathered through the conical pipeline, the liquid is discharged in multiple directions through the rotary cleaning ball, the discharged liquid is contacted with the first truncated cone-shaped guide cylinder, and the first arc-shaped through holes are formed in the second truncated cone-shaped guide cylinder, so that one part of the liquid contacted with the first truncated cone-shaped guide cylinder flows downwards along the first truncated cone-shaped guide cylinder, the other part of the liquid flows downwards along the third outer end of the second truncated cone-shaped guide cylinder, and the second arc-shaped through holes are uniformly formed in the third outer end of the second truncated cone-shaped guide cylinder, so that one part of the liquid flowing downwards along the second truncated cone-shaped guide cylinder flows downwards along the third truncated cone-shaped guide cylinder, and the other part of the liquid flows downwards along the third truncated cone-shaped guide cylinder, thereby increasing the flowing path of the liquid, enabling the liquid to be uniformly distributed on the first filler material and the second filler material, reducing the generation of wall flow phenomenon while ensuring the uniform thickness of the filler material, and improving the separation efficiency of equipment.
3. According to the invention, the tightness of the pipe orifice is increased through the rubber ring, the pipe orifice is connected and fixed through rotating the threaded sleeve, the sealing of the joint is ensured through the sealing strip, the influence on the flow of liquid is prevented through the multi-layer hollow grids, the sealing plates on the adjacent grid circular plates are not overlapped on the same projection surface, the first filler material is supported, the leakage of the first filler material is prevented, the inclined Z-shaped plate is used for preventing the blocking of liquid, the first filler material is prevented from flying upwards, and the smooth separation operation of equipment is ensured.
4. According to the invention, the motor drives the first gear to rotate, so that the second gear is driven to rotate, the ring gear is driven to synchronously rotate by the second gear, so that the ring gear and the linkage ring synchronously rotate under the drive of the linkage column, the liquid is further uniformly distributed on the first filler material and the second filler material, the thickness uniformity of the filler material is further ensured, the generation of wall flow phenomenon is reduced, the gas-liquid distribution uniformity in the filler layer is further ensured, and the separation efficiency of the equipment is further improved.
In addition to the technical problems, technical features constituting the technical solutions, and beneficial effects caused by the technical features of the technical solutions described above, other technical problems that can be solved based on a separation device for preparing vinylidene fluoride, other technical features included in the technical solutions, and beneficial effects caused by the technical features provided by the embodiments of the present application will be further described in detail in the detailed description.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a schematic perspective view of a front view according to an embodiment of the present invention.
Fig. 2 shows a schematic diagram of a front cross-sectional plan structure provided according to an embodiment of the present invention.
Fig. 3 shows a partial enlarged view at E of fig. 2.
Fig. 4 shows a schematic view of a left-hand cross-sectional plan structure provided according to an embodiment of the present invention.
Fig. 5 shows a partial enlarged view at N of fig. 4.
Fig. 6 shows a partial enlarged view at M of fig. 4.
Wherein the above figures include the following reference numerals:
1. A tower body; 11. an air outlet pipe; 111. an annular groove; 112. a rubber ring; 113. a thread sleeve; 114. a sealing strip; 12. a liquid outlet pipe; 13. an air inlet pipe; 14. a liquid inlet pipe; 15. heating wires; 16. a thermal insulation shell; 17. a linkage frame; 171. a vertical pipe; 172. a main pipe; 173. a sub-pillar; 174. a ring gear; 18. a shunt frame; 181. a branch pipe; 182. a cylindrical through hole; 183. a circular baffle; 184. a torsion spring; 19. a liquid outlet frame I; 191. a tapered conduit; 192. rotating the cleaning ball; 193. a first cone-shaped guide cylinder; 194. a second cone-shaped guide cylinder; 195. arc through hole I; 196. a truncated cone-shaped guide cylinder III; 197. arc through hole II; 2. a rectification unit; 21. a liquid redistributor; 22. a drive rack; 221. a conical collection cylinder; 2211. a vertical cylinder; 222. a linkage ring; 223. a linkage column; 224. a first motor; 225. a first gear; 226. a second gear; 227. a horizontal pipe; 228. rotating the column; 229. a mating gear; 23. a liquid outlet frame II; 24. a first filler supporting plate; 241. positioning ring plates; 242. a grid circular plate; 243. a closing plate; 25. a filler material I; 26. a first packing pressing plate; 261. an annular pressing plate; 262. a sloped Z-plate; 27. a second filler supporting plate; 28. a filler material II; 29. and a packing pressing plate II.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.
Referring to fig. 1 and 2, a separation device for preparing vinylidene fluoride comprises a tower body 1 and a rectifying unit 2, wherein the rectifying unit 2 is arranged in the tower body 1 and is used for treating pyrolysis gas subjected to primary treatment to obtain vinylidene fluoride monomers; the upper end of the tower body 1 is fixedly provided with an air outlet pipe 11 for discharging rectified gas out of the tower body 1, the lower end of the tower body 1 is fixedly provided with a liquid outlet pipe 12 for discharging rectified liquid out of the tower body 1, the left end of the lower side of the tower body 1 is fixedly provided with an air inlet pipe 13 for introducing gas into the tower body 1, the right end of the upper side of the tower body 1 is fixedly provided with a liquid inlet pipe 14 for introducing liquid into the tower body 1, the inside of the tower body 1 is fixedly provided with an electric heating wire 15 for heating the inside of the tower body 1, the outside of the tower body 1 is fixedly provided with a heat-insulating shell 16 for insulating the inside of the tower body 1, the left end of the liquid inlet pipe 14 is fixedly provided with a linkage frame 17 which is positioned in the inside of the tower body 1, the front and back of the linkage frame 17 are symmetrically and fixedly provided with a split frame 18 for splitting liquid, and the lower end of the split frame 18 is uniformly and fixedly provided with a liquid outlet frame 19 for further splitting the split liquid; the rectifying unit 2 comprises a driving frame 22, the driving frame 22 is arranged on the tower body 1, the driving frame 22 is fixedly connected with the linkage frame 17, the liquid redistributors 21 are symmetrically and fixedly arranged on the left and right sides of the driving frame 22, the liquid discharging frames 23 are uniformly and fixedly arranged at the lower ends of the liquid redistributors 21, the first packing support plates 24 are fixedly arranged on the inner walls of the tower body 1 and positioned on the upper sides of the liquid redistributors 21, the first packing materials 25 are arranged at the upper ends of the first packing support plates 24, the first packing press plates 26 are arranged at the upper ends of the first packing materials 25, the second packing support plates 27 are arranged on the inner walls of the tower body 1 and positioned below the liquid redistributors 21, the second packing materials 28 are arranged at the upper ends of the second packing support plates 27, and the second packing press plates 29 are arranged at the upper ends of the second packing materials 28; according to the requirement, the inside of the tower body 1 is heated by the electric heating wire 15, so that the temperature inside the tower body 1 is at the optimal rectification temperature, cracking gas is introduced into the tower body 1 through the air inlet pipe 13, liquid is introduced into the tower body 1 through the liquid inlet pipe 14, mass transfer is carried out between the liquid and the cracking gas through the matching of the first packing material 25 and the second packing material 28, the liquid passing through the first packing pressure plate 26 is split again through the liquid redistributor 21, the driving frame 22 is matched with the linkage frame 17, the split frame 18, the first liquid outlet frame 19, the liquid redistributor 21 and the second liquid outlet frame 23 are driven to rotate together, the positions of the liquid flowing through the first packing material 25 and the second packing material 28 are changed, the first packing material 25 and the second packing material 28 are prevented from being impacted by the liquid for a long time, grooves are formed, meanwhile, the tendency of gradually flowing to the tower wall is reduced when the first packing material 25 and the second packing material 28 flows downwards, namely, the probability of wall flow phenomenon is generated, the gas and liquid in the packing layer are prevented from being distributed unevenly, mass transfer efficiency is reduced, the first packing material is respectively pressed by the first packing material 25 and the second packing material 28 through the supporting plate 25 and the second packing material 28 respectively, and the first packing material 25 and the second packing material 28 are pressed by the first supporting plate and second packing material 28 and the second packing material 28 respectively.
Referring to fig. 2 and 4, the linkage frame 17 includes a vertical pipe 171, a vertical pipe 171 is fixedly mounted at the left end of the liquid inlet pipe 14 and located in the tower 1, a main pipe 172 is rotatably connected at the lower end of the vertical pipe 171, sub-posts 173 are uniformly and fixedly mounted at the outer end of the main pipe 172, ring gears 174 are fixedly mounted at the ends of the sub-posts 173, and the ring gears 174 are rotatably connected with the tower 1; liquid enters the vertical tube 171 through the inlet tube 14 and then enters the main tube 172, the rotation of the main tube 172 being controlled by the ring gear 174 and the split legs 173.
Referring to fig. 5, the splitter frame 18 includes a branch pipe 181, a semicircular pipe group is symmetrically and fixedly installed in front of and behind the main pipe 172, the semicircular pipe group is formed by fixedly connecting a plurality of branch pipes 181 which are mutually perpendicular and staggered, cylindrical through holes 182 are formed at the lower ends of the branch pipes 181, circular baffles 183 are rotatably connected in the cylindrical through holes 182 through pins, torsion springs 184 are sleeved on the pins, one ends of the torsion springs 184 are fixedly connected with the circular baffles 183, the other ends of the torsion springs 184 are fixedly connected with the branch pipes 181, the structure of the liquid redistributors 21 is the same as that of the splitter frame 18, and the angle between the projections of the liquid redistributors 21 and the splitter frame 18 on the same horizontal plane is only 45 degrees; the liquid is split by the branch pipe 181, when the content pressure of the water in the branch pipe 181 reaches the maximum pressure born by the circular baffle 183, the circular baffle 183 rotates, the liquid flows out of the cylindrical through hole 182 smoothly and enters the liquid outlet frame I19, when the content pressure of the water in the branch pipe 181 does not reach the maximum pressure born by the circular baffle 183, the torsion spring 184 drives the circular baffle 183 to return to an initial state, and in order to ensure full contact between the liquid and the pyrolysis gas, thereby completely carrying out mass transfer, the angle between the projections of the liquid redistributor 21 and the split frame 18 on the same horizontal plane is set to be 45 degrees.
Referring to fig. 5, the first liquid outlet frame 19 includes a tapered pipe 191, a tapered pipe 191 is fixedly mounted below the cylindrical through hole 182 at the lower end of the branched pipe 181, a rotary cleaning ball 192 is rotatably connected at the lower end of the tapered pipe 191, a first truncated cone-shaped guide cylinder 193 is fixedly mounted at the lower end of the branched pipe 181 and outside the rotary cleaning ball, a second truncated cone-shaped guide cylinder 194 is fixedly mounted at the inner end of the first truncated cone-shaped guide cylinder 193, an arc-shaped through hole 195 is uniformly formed at the outer end of the second truncated cone-shaped guide cylinder 194, a third truncated cone-shaped guide cylinder 196 is fixedly mounted at the inner end of the second truncated cone-shaped guide cylinder 194, an arc-shaped through hole 197 is uniformly formed at the outer end of the third truncated cone-shaped guide cylinder 196 and is staggered with the first arc-shaped through hole 195, and the second liquid outlet frame 23 has the same structure as the first liquid outlet frame 19; the liquid is gathered through the conical pipeline 191, the liquid is discharged in multiple directions through the rotary cleaning ball 192, the discharged liquid is contacted with the first circular truncated cone-shaped guide cylinder 193, and as the first arc-shaped through hole 195 is formed in the second circular truncated cone-shaped guide cylinder 194, a part of the liquid contacted with the first circular truncated cone-shaped guide cylinder 193 flows downwards along the first circular truncated cone-shaped guide cylinder 193, and the other part of the liquid flows downwards along the second circular truncated cone-shaped guide cylinder 194, and as the second arc-shaped through holes 197 are uniformly formed in the outer end of the third circular truncated cone-shaped guide cylinder 196, a part of the liquid downwards along the second circular truncated cone-shaped guide cylinder 194 flows downwards, and the other part of the liquid downwards along the third circular truncated cone-shaped guide cylinder 196, so that the liquid flowing path is increased, and the liquid is uniformly distributed on the first filler material 25 and the second filler material 28.
Referring to fig. 2 and 3, the orifices of the air outlet pipe 11, the liquid outlet pipe 12, the air inlet pipe 13 and the liquid inlet pipe 14 are provided with annular grooves 111, rubber rings 112 are fixedly arranged in the annular grooves 111, the outer ends of the orifices of the air outlet pipe 11, the liquid outlet pipe 12, the air inlet pipe 13 and the liquid inlet pipe 14 are connected with threaded sleeves 113 in a threaded connection manner, and sealing strips 114 are fixedly arranged in the threaded grooves on the threaded sleeves 113; the tightness of the pipe orifice is increased through the rubber ring 112, the pipe orifice is connected and fixed through rotating the threaded sleeve 113, and the sealing of the joint is ensured through the sealing strip 114.
Referring to fig. 2 and 6, the driving frame 22 includes a conical collection cylinder 221, the inner wall of the tower body 1 is rotatably connected with the conical collection cylinder 221, a vertical cylinder 2211 is fixedly mounted at the lower end of the conical collection cylinder 221, a linkage ring 222 is fixedly mounted at the outer end of the upper side of the conical collection cylinder 221, the linkage ring 222 and the ring gear 174 are fixedly connected together through a linkage column 223, a first motor 224 is fixedly mounted at the upper end of the tower body 1 through a motor base, a first gear 225 is fixedly mounted on an output shaft of the first motor 224 through a coupling, a second gear 226 is rotatably connected to the tower body 1, the first gear 225 is meshed with the second gear 226, the diameter of the second gear 226 is larger than that of the first gear 225, a horizontal pipeline 227 is fixedly mounted at the lower end of the vertical cylinder 2211, an angle between the axis of the horizontal pipeline 227 and a projection of the main pipeline 172 on a horizontal plane of the horizontal pipeline 227 is 45 °, a liquid redistributor 21 is symmetrically fixedly mounted on the horizontal pipeline 227, a rotation column 228 is fixedly mounted at the lower end of the second gear 226, a matching gear 229 is fixedly mounted on the rotation column 228, and the matching gear 229 is meshed with the ring gear 174; the first motor 224 drives the first gear 225 to rotate, so as to drive the second gear 226 to rotate, the matching gear 229 drives the ring gear 174 to synchronously rotate under the drive of the second gear 226, so that the ring gear 174 and the linkage ring 222 synchronously rotate under the drive of the linkage column 223, and the liquid is further uniformly distributed on the first filler material 25 and the second filler material 28.
Referring to fig. 4 and 6, the first packing support plate 24 includes a positioning ring plate 241, the positioning ring plate 241 is fixedly mounted on the inner wall of the tower body 1 and above the liquid redistributor 21, the grid circular plates 242 are uniformly and fixedly mounted on the inner ends of the positioning ring plates 241, a plurality of sealing plates 243 are fixedly mounted on the grids on the grid circular plates 242, hollow grids are arranged between the sealing plates 243 on the same grid circular plate 242, and the sealing plates 243 on adjacent grid circular plates 242 are not overlapped on the same projection plane; the liquid flow is prevented from being influenced by the multi-layer hollowed-out grids, and the sealing plates 243 on the adjacent grid circular plates 242 are not overlapped on the same projection surface, so that the first filler material 25 is supported and prevented from leaking.
Referring to fig. 4, the first packing pressing plate 26 includes an annular pressing plate 261, the upper end of the first packing material 25 is provided with the annular pressing plate 261, and the inner end of the annular pressing plate 261 is uniformly and fixedly provided with mutually staggered inclined Z-shaped plates 262; the upper end of the first filler material 25 is prevented from flying while blocking the liquid by the inclined Z-shaped plate 262.
The working principle of the invention is as follows: the first step: according to the requirement, the inside of the tower body 1 is heated by the electric heating wire 15, so that the temperature inside the tower body 1 is at the optimal rectification temperature, pyrolysis gas is introduced into the tower body 1 through the air inlet pipe 13, and liquid is introduced into the tower body 1 through the liquid inlet pipe 14.
And a second step of: mass transfer between the liquid and the cracked gas is achieved by the cooperation of the first packing material 25 and the second packing material 28, and the liquid passing through the first packing platen 26 is split again by the liquid redistributor 21.
And a third step of: the driving frame 22 is matched with the linkage frame 17 to drive the split-flow frame 18, the first liquid outlet frame 19, the liquid redistributor 21 and the second liquid outlet frame 23 to rotate together, so that the positions of liquid flowing through the first filler material 25 and the second filler material 28 are changed, and the first filler material 25 and the second filler material 28 are prevented from being impacted by the liquid of the liquid for a long time, so that grooves are formed.
In the description of the present invention, it should be understood that the terms "center," "middle," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "end," "axial," "circumferential," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying a number of technical features which is indicated. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "connected," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, or slidably connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The embodiments of the present invention are all preferred embodiments of the present invention, and are not intended to limit the scope of the present invention in this way, therefore: all equivalent changes in structure, shape and principle according to the present invention should be covered in the protection scope of the present invention.
Claims (5)
1. The separation equipment for preparing the vinylidene fluoride is characterized by comprising a tower body (1) and a rectifying unit (2), wherein the rectifying unit (2) is arranged in the tower body (1) and is used for treating pyrolysis gas subjected to primary treatment to obtain a vinylidene fluoride monomer;
The device comprises a tower body (1), wherein an air outlet pipe (11) for discharging rectified air out of the tower body (1) is fixedly arranged at the upper end of the tower body (1), a liquid outlet pipe (12) for discharging rectified liquid out of the tower body (1) is fixedly arranged at the lower end of the tower body (1), an air inlet pipe (13) for introducing air into the tower body (1) is fixedly arranged at the left end of the lower side of the tower body (1), a liquid inlet pipe (14) for introducing liquid into the tower body (1) is fixedly arranged at the right end of the upper side of the tower body (1), an electric heating wire (15) for heating the inside of the tower body (1) is fixedly arranged in the tower body (1), a heat preservation shell (16) for preserving heat inside the tower body (1) is fixedly arranged at the outer end of the tower body (1), a linkage frame (17) is fixedly arranged at the left end of the inner side of the tower body (1), a flow dividing frame (18) for dividing the liquid is symmetrically and fixedly arranged at the front and back of the lower end of the flow dividing frame (18), and a liquid outlet frame (19) for dividing the liquid into the liquid after the liquid is evenly and dividing is uniformly and fixedly arranged at the lower end of the flow dividing frame;
The rectification unit (2) comprises a driving frame (22), the driving frame (22) is arranged on the tower body (1), the driving frame (22) is fixedly connected with the linkage frame (17), the liquid redistributors (21) are symmetrically and fixedly arranged left and right on the driving frame (22), the liquid redistributors (21) are uniformly and fixedly provided with a liquid outlet frame II (23) at the lower end, a first filler supporting plate (24) is fixedly arranged on the inner wall of the tower body (1) and positioned on the upper side of the liquid redistributors (21), a first filler material (25) is arranged at the upper end of the first filler supporting plate (24), a first filler pressing plate (26) is arranged at the upper end of the first filler material (25), a second filler supporting plate (27) is arranged on the inner wall of the tower body (1) and positioned below the liquid redistributors (21), a second filler material (28) is arranged at the upper end of the second filler supporting plate (27), and a second filler pressing plate (29) is arranged at the upper end of the second filler material (28).
The linkage frame (17) comprises a vertical pipeline (171), the left end of the liquid inlet pipe (14) is fixedly provided with the vertical pipeline (171) and positioned in the tower body (1), the lower end of the vertical pipeline (171) is rotationally connected with a main pipeline (172), the outer end of the main pipeline (172) is uniformly and fixedly provided with branch posts (173), the tail ends of the branch posts (173) are fixedly provided with a ring gear (174) together, and the ring gear (174) is rotationally connected with the tower body (1);
The split-flow rack (18) comprises a branch pipe (181), semicircular pipe groups are symmetrically and fixedly arranged around the main pipe (172), the semicircular pipe groups are formed by fixedly connecting a plurality of mutually perpendicular and staggered branch pipes (181), cylindrical through holes (182) are formed in the lower ends of the branch pipes (181), round baffles (183) are rotatably connected in the cylindrical through holes (182) through pin shafts, torsion springs (184) are sleeved on the pin shafts, one ends of the torsion springs (184) are fixedly connected with the round baffles (183), the other ends of the torsion springs (184) are fixedly connected with the branch pipes (181), the structures of the liquid redistributors (21) are identical to those of the split-flow rack (18), and the angle between the projections of the liquid redistributors (21) and the split-flow rack (18) on the same horizontal plane is 45 degrees;
the driving frame (22) comprises a conical collecting cylinder (221), the inner wall of the tower body (1) is rotationally connected with the conical collecting cylinder (221), the lower end of the conical collecting cylinder (221) is fixedly provided with a vertical cylinder (2211), the outer end of the upper side of the conical collecting cylinder (221) is fixedly provided with a linkage ring (222), the linkage ring (222) and a ring gear (174) are fixedly connected together through a linkage column (223), the upper end of the tower body (1) is fixedly provided with a motor I (224) through a motor seat, an output shaft of the motor I (224) is fixedly provided with a gear I (225) through a coupler, the tower body (1) is rotationally connected with a gear II (226), the gear I (225) is meshed with the gear II (226), the diameter of the gear II (226) is larger than that of the gear I (225), the lower end of the vertical cylinder (2211) is fixedly provided with a horizontal pipeline (227), the angle between the axis of the horizontal pipeline (227) and the projection of the main pipeline (172) on the horizontal plane of the axis of the horizontal pipeline (227) is 45 DEG, the horizontal pipeline (227) is symmetrically and fixedly provided with a liquid redistribution device (21), the lower end of the gear II (226) is rotationally provided with the gear II (226) and the gear II (228) is rotationally matched with the gear II (228), the mating gear (229) is meshed with the ring gear (174).
2. The separation apparatus for vinylidene fluoride production according to claim 1, wherein: the liquid outlet frame I (19) comprises a conical pipeline (191), the lower end of the branch pipeline (181) is fixedly arranged below a cylindrical through hole (182), the lower end of the conical pipeline (191) is rotationally connected with a rotary cleaning ball (192), the lower end of the branch pipeline (181) is fixedly arranged outside the rotary cleaning ball and provided with a circular truncated cone-shaped guide cylinder I (193), the bottom surface diameter of the lower end of the circular truncated cone-shaped guide cylinder I (193) is larger than the bottom surface diameter of the upper end, the inner end of the circular truncated cone-shaped guide cylinder I (193) is fixedly provided with a circular truncated cone-shaped guide cylinder II (194), the bottom surface diameter of the lower end of the circular truncated cone-shaped guide cylinder II (194) is smaller than the bottom surface diameter of the upper end, the outer end of the circular truncated cone-shaped guide cylinder II (194) is uniformly provided with an arc-shaped through hole II (197), the arc-shaped through hole II (197) and the bottom surface diameter of the circular truncated cone-shaped guide cylinder II (194) are uniformly arranged, and the liquid outlet frame I (23) is of the same structure.
3. The separation apparatus for vinylidene fluoride production according to claim 1, wherein: annular grooves (111) are formed in the pipe orifices of the air outlet pipe (11), the liquid outlet pipe (12), the air inlet pipe (13) and the liquid inlet pipe (14), rubber rings (112) are fixedly installed in the annular grooves (111), threaded sleeves (113) are connected to the outer ends of the pipe orifices of the air outlet pipe (11), the liquid outlet pipe (12), the air inlet pipe (13) and the liquid inlet pipe (14) in a threaded connection mode, and sealing strips (114) are fixedly installed in the threaded grooves in the threaded sleeves (113).
4. The separation apparatus for vinylidene fluoride production according to claim 1, wherein: the first filler supporting plate (24) comprises a positioning ring plate (241), the positioning ring plate (241) is fixedly installed on the inner wall of the tower body (1) and located above the liquid redistributor (21), a grid circular plate (242) is uniformly and fixedly installed at the inner end of the positioning ring plate (241), a plurality of sealing plates (243) are fixedly installed on grids on the grid circular plate (242), hollow grids are arranged between the sealing plates (243) on the same grid circular plate (242), and the sealing plates (243) on adjacent grid circular plates (242) are not overlapped on the same projection plane.
5. The separation apparatus for vinylidene fluoride production according to claim 1, wherein: the first packing pressing plate (26) comprises an annular pressing plate (261), the annular pressing plate (261) is arranged at the upper end of the first packing material (25), and the inclined Z-shaped plates (262) which are staggered with each other are uniformly and fixedly arranged at the inner end of the annular pressing plate (261).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311749198.9A CN117654090B (en) | 2023-12-18 | 2023-12-18 | Separation equipment for vinylidene fluoride preparation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311749198.9A CN117654090B (en) | 2023-12-18 | 2023-12-18 | Separation equipment for vinylidene fluoride preparation |
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| Publication Number | Publication Date |
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| CN117654090A CN117654090A (en) | 2024-03-08 |
| CN117654090B true CN117654090B (en) | 2024-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311749198.9A Active CN117654090B (en) | 2023-12-18 | 2023-12-18 | Separation equipment for vinylidene fluoride preparation |
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| CN204656038U (en) * | 2015-05-11 | 2015-09-23 | 河北可耐特玻璃钢有限公司 | A kind of rotational flow type liquid distributor |
| CN109569493A (en) * | 2017-09-29 | 2019-04-05 | 中天科技精密材料有限公司 | Filler and packed tower |
| CN216439990U (en) * | 2021-11-30 | 2022-05-06 | 江苏湖大化工科技有限公司 | Rectifying tower for continuous rectification in fine chemical industry |
| CN115888154A (en) * | 2022-09-09 | 2023-04-04 | 江苏省特种设备安全监督检验研究院盐城分院 | Tetrahydrofuran high-pressure rectifying tower |
| CN116510333A (en) * | 2023-03-30 | 2023-08-01 | 安徽中核桐源科技有限公司 | Rectifying column tower kettle |
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2023
- 2023-12-18 CN CN202311749198.9A patent/CN117654090B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204656038U (en) * | 2015-05-11 | 2015-09-23 | 河北可耐特玻璃钢有限公司 | A kind of rotational flow type liquid distributor |
| CN109569493A (en) * | 2017-09-29 | 2019-04-05 | 中天科技精密材料有限公司 | Filler and packed tower |
| CN216439990U (en) * | 2021-11-30 | 2022-05-06 | 江苏湖大化工科技有限公司 | Rectifying tower for continuous rectification in fine chemical industry |
| CN115888154A (en) * | 2022-09-09 | 2023-04-04 | 江苏省特种设备安全监督检验研究院盐城分院 | Tetrahydrofuran high-pressure rectifying tower |
| CN116510333A (en) * | 2023-03-30 | 2023-08-01 | 安徽中核桐源科技有限公司 | Rectifying column tower kettle |
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| CN117654090A (en) | 2024-03-08 |
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