CN117379807B - Pyran production system for glutaraldehyde synthesis - Google Patents
Pyran production system for glutaraldehyde synthesis Download PDFInfo
- Publication number
- CN117379807B CN117379807B CN202311315808.4A CN202311315808A CN117379807B CN 117379807 B CN117379807 B CN 117379807B CN 202311315808 A CN202311315808 A CN 202311315808A CN 117379807 B CN117379807 B CN 117379807B
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- China
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- plate
- tower body
- glutaraldehyde
- bevel gear
- defoaming
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- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 19
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 19
- MGADZUXDNSDTHW-UHFFFAOYSA-N 2H-pyran Chemical compound C1OC=CC=C1 MGADZUXDNSDTHW-UHFFFAOYSA-N 0.000 title claims description 37
- 239000006260 foam Substances 0.000 claims abstract description 75
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 238000009434 installation Methods 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims description 79
- 230000005540 biological transmission Effects 0.000 claims description 22
- 230000000903 blocking effect Effects 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims description 3
- 125000004309 pyranyl group Chemical group O1C(C=CC=C1)* 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 21
- 230000000694 effects Effects 0.000 description 14
- 230000008569 process Effects 0.000 description 14
- 239000000047 product Substances 0.000 description 11
- 239000003595 mist Substances 0.000 description 10
- 238000005192 partition Methods 0.000 description 9
- 230000000630 rising effect Effects 0.000 description 8
- 241000883990 Flabellum Species 0.000 description 6
- 244000309464 bull Species 0.000 description 5
- HGINCPLSRVDWNT-UHFFFAOYSA-N Acrolein Chemical compound C=CC=O HGINCPLSRVDWNT-UHFFFAOYSA-N 0.000 description 4
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000004821 distillation Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 230000003301 hydrolyzing effect Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 210000004400 mucous membrane Anatomy 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 239000011864 timber preservative 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
- B01D45/12—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces
- B01D45/14—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by centrifugal forces generated by rotating vanes, discs, drums or brushes
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D309/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings
- C07D309/34—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
Abstract
The utility model relates to a glutaraldehyde production technical field specifically discloses a glutaraldehyde is pyran production system for synthesis, and it includes the tower body, sets up in the column plate in the tower body and removes foam mechanism, the bottom of tower body is provided with the drain pipe, the column plate is provided with a plurality of and sets up along the direction of height interval of tower body, remove foam mechanism corresponds the column plate and is provided with a plurality of, every remove foam mechanism all sets up in the one side that corresponds the column plate and is close to the drain pipe, remove foam mechanism including rotating the installation frame that sets up in the tower body, set up the foam plate on the installation frame and set up the rotating assembly in installation frame one side, remove the foam plate and be provided with a plurality of and set up along the direction of height interval of tower body, every remove the strip hole that all set up a plurality of parallel arrangement on the foam plate, adjacent two the strip hole on the foam plate is the alternate setting, rotating assembly is used for driving the installation frame and rotates. The application can reduce entrainment and promote product quality.
Description
Technical Field
The application relates to the technical field of glutaraldehyde production, in particular to a pyran production system for glutaraldehyde synthesis.
Background
Glutaraldehyde is a colorless transparent oily liquid with a pungent odor, and is dissolved in hot water, and has strong irritation to eyes, skin and mucous membrane. Glutaraldehyde may be used as food processing assistant, bacterial disinfectant, tanning agent, timber preservative, medicine and polymer material.
At present, the synthesis method of glutaraldehyde mainly comprises an oxidation method, a pyridine method and a pyran method. The oxidation method has high technical requirements, harsh process conditions, high risk and lower yield; the pyridine method has the advantages of expensive raw materials, more steps, inconvenient operation and low yield; the pyran method has simple process, simple and convenient operation, high yield and good product quality, thereby being suitable for industrial production of glutaraldehyde.
The process for producing glutaraldehyde by the pyran method is as follows: the methyl ether and the acrolein are subjected to condensation reaction at high temperature and high pressure to generate crude pyran; then feeding the crude pyran into a first reaction kettle, and heating and separating methyl ether in the crude pyran; then the reaction product enters a second reaction kettle, and acrolein in the crude pyran is separated by heating; then the reaction product enters a third reaction kettle, and refined pyran is obtained through heating and distillation; finally, hydrolyzing the refined pyran to obtain the glutaraldehyde product.
In the process of distilling and purifying the crude pyran, a plate tower is needed. When the device works, under the action of gravity, the crude pyran solution sequentially flows through all layers of tower plates from top to bottom and is discharged from the bottom of the tower; the gas passes through all layers of tower plates from bottom to top in turn under the pushing of pressure difference and is discharged to the top of the tower; each column plate is maintained with a liquid layer with a certain depth, and gas is dispersed into the liquid layer through the column plates to carry out phase contact mass transfer. When the crude pyran passes through the tower plate, the gas passes through the sieve holes and rises through the bubbling of the liquid layer, after the gas bubbles from the liquid, liquid drops are easy to be entrained when the gas passes through the liquid layer, and part of the separated liquid drops are brought to the tower plate at the upper layer by the gas, which is called entrainment. Entrainment tends to reduce tray efficiency, and in addition, large amounts of entrainment can carry heavy components into the overhead product that should not rise to the overhead, resulting in reduced product quality.
Disclosure of Invention
In order to reduce entrainment in the purification process of crude pyran and ensure the product quality, the application provides a pyran production system for glutaraldehyde synthesis.
The pyran production system for glutaraldehyde synthesis adopts the following technical scheme:
the utility model provides a glutaraldehyde is pyran production system for synthesis, includes the tower body, sets up in the column plate in the tower body and removes foam mechanism, the bottom of tower body is provided with the drain pipe, the column plate is provided with a plurality of and sets up along the direction of height interval of tower body, remove foam mechanism corresponds the column plate and is provided with a plurality ofly, every remove foam mechanism all sets up in the one side that corresponds the column plate and is close to the drain pipe, remove foam mechanism including rotating the installation frame that sets up in the tower body, set up the foam board on the installation frame and set up the rotating assembly in installation frame one side, the foam board is provided with a plurality of and sets up along the direction of height interval of tower body, every remove all set up a plurality of parallel arrangement's bar holes on the foam board, adjacent two bar hole on the foam board is the cross setting, rotating assembly is used for driving the installation frame and rotates, the axis of rotation of installation frame is parallel with the direction of height of tower body.
By adopting the technical scheme, when the gas lifting device works, the rotating assembly drives the mounting frame and the foam removing plate to rotate, the foam removing plate passes through the foam removing plate and then the tower plate in the gas lifting process, the foam removing plate can remove the mist carried in the gas, the strip-shaped holes arranged on the foam removing plate ensure the smoothness of the gas lifting process, and the gas flow speed is guaranteed, so that the possibility of liquid leakage of the tower plate is reduced, the gas and the liquid on the tower plate can be fully contacted, and the efficiency of the tower plate is ensured; the rotation of the foam removing plate can increase the contact area between the foam removing plate and the gas, so as to enhance the foam removing effect; because the gas is subjected to defoaming treatment for multiple times, the entrainment quantity is reduced, so that the concentration difference in the mass transfer process can be ensured, the efficiency of the tower plate can be improved, and the heavy components entering in the tower top product can be reduced, thereby ensuring the product quality.
Optionally, the rotation subassembly includes drive component and drive component, drive component is including rotating the driving gear that sets up in the tower body and coaxial driven ring gear that sets up on the installing frame, the quantity of driving gear and driven ring gear is the same, the driving gear meshes with the driven ring gear that corresponds, drive component is used for driving the driving gear rotation.
Through adopting above-mentioned technical scheme, the driving gear rotates and can drive driven ring gear and rotate to drive installing frame and defoaming board rotation, simple structure, it is reliable and stable.
Optionally, the transmission part comprises a rotary power part, a rotating shaft and a transmission part, the rotary power part is arranged on the tower body, the rotating shaft is coaxially connected to the output end of the rotary power part, and the rotating shaft is parallel to the height direction of the tower body; the number of the transmission parts is the same as that of the driving gears, each transmission part corresponds to one driving gear, and each transmission part comprises a first bevel gear pair, a second bevel gear pair and a connecting shaft; the connecting shaft penetrates through the wall surface of the tower body, the connecting shaft is perpendicular to the height direction of the tower body, the first bevel gear pair is located outside the tower body, the second bevel gear pair is located in the tower body, the connecting shaft is connected between the first bevel gear pair and the second bevel gear pair, the first bevel gear pair is connected with the rotating shaft, and the second bevel gear pair is connected with the corresponding driving gear.
By adopting the technical scheme, the rotary power piece drives the rotating shaft to rotate, the rotating shaft drives the first bevel gear pair to work, the first bevel gear pair drives the second bevel gear pair to work through the connecting shaft, and the second bevel gear pair drives the driving gear to rotate, so that the corresponding mounting frames and the foam removal plate are driven to rotate, and therefore, one rotary power piece can enable a plurality of mounting frames in the same vertical direction to synchronously rotate, thereby being beneficial to reducing power sources and saving energy sources; in addition, the arrangement of the first bevel gear pair and the second bevel gear pair changes the transmission direction, so that the connecting shaft penetrates through the side wall of the tower body to realize transmission, the tightness is ensured, the possibility of gas leakage in the tower body can be reduced, and the working efficiency of the tower body is guaranteed.
Optionally, a fan blade is arranged on one side of the mounting frame, which is close to the liquid outlet pipe, and the rotation axis of the fan blade is coaxial with the rotation axis of the mounting frame.
Through adopting above-mentioned technical scheme, can drive the flabellum and rotate when the installing frame rotates, the flabellum rotates and then can accelerate the air flow in the tower body for gaseous rising more easily, thereby weakens the installing frame and removes the influence that the foam board caused to the gas flow when rotating.
Optionally, the defoaming plate is a circular plate, one side of the drain pipe is kept away from to the installing frame is provided with the guide ring, be provided with waterproof apron in the tower between guide ring and corresponding column plate, the diameter of opening that installing frame one side was kept away from to the guide ring is less than waterproof apron, and is less than the diameter of defoaming plate.
Through adopting above-mentioned technical scheme, when the tray weeping, the liquid that leaks down can drip to waterproof apron's top earlier on the tray, then liquid flows along waterproof apron's top to on the outer wall at guide ring top, then flows down along the outer wall of guide ring, therefore waterproof apron and guide ring's setting can avoid directly dripping to the defoaming board from the liquid that leaks down on the tray, helps guaranteeing the defoaming efficiency of defoaming board, prolongs the life of defoaming board.
Optionally, be provided with the division board between the inner wall of tower body and the guide ring, the division board is annular, the inward flange of division board contacts with the guide ring, the outward flange of division board links to each other with the tower body inner wall, a plurality of first flowing back holes have been seted up on the division board.
By adopting the technical scheme, the upper side and the lower side of the guide ring are separated by the partition plate, so that after the defoamed gas flows out from between the waterproof cover plate and the guide ring, the gas can flow upwards more under the blocking action of the partition plate and then passes through the column plate, the flow direction of the gas can be limited by the arrangement of the partition plate, and the working efficiency of the distillation column is ensured; the first liquid draining hole can drain the dropped liquid, so that the liquid is prevented from accumulating at the partition plate.
Optionally, be provided with the guide plate on the inner wall of tower body in the one side that the installing frame is close to the drain pipe, the guide plate is annular, the inward flange of guide plate contacts with the inner wall of installing frame, the outward flange of guide plate links to each other with the tower body inner wall, be provided with a plurality of second fluid-discharge holes on the guide plate, be provided with the barrier that is used for second fluid-discharge hole confined in second fluid-discharge hole department on the guide plate.
Through adopting above-mentioned technical scheme, the guide plate can play the effect of water conservancy diversion to gas, under the barrier effect of guide plate, and the gaseous all accessible of rising removes the foam board and carries out the defoaming and handle, has reduced and has not removed the foam board and just directly risen the gaseous volume to column plate department, helps guaranteeing gaseous defoaming effect.
Optionally, the blocking piece includes the baffle of setting up in the second apopore department on the guide plate and sets up the torsional spring between guide plate and baffle, the baffle is located the guide plate and is close to one side of drain pipe, the torsional spring makes the baffle produce the trend of supporting tightly in the second apopore department of guide plate.
By adopting the technical scheme, the torsional spring enables the baffle to be abutted against the second liquid discharge hole of the guide plate in a normal state, so that the second liquid discharge hole is closed, rising gas cannot pass through the second liquid discharge hole, the quantity of the gas directly rising to the tower plate without defoaming treatment is further reduced, and the efficiency of the tower plate is guaranteed; after the liquid on the guide plate is accumulated to a certain amount, the baffle plate rotates downwards under the action of gravity of the liquid, so that the second liquid discharge hole is opened, the liquid is smoothly discharged, and the accumulation of the liquid at the guide plate can be avoided.
Optionally, an access door is movably arranged on the outer side of each mounting frame on the tower body.
Through adopting above-mentioned technical scheme, be convenient for take out the defoaming board of installing in the installing frame after opening the access door to change, help guaranteeing the defoaming effect of defoaming board.
In summary, the present application includes at least one of the following beneficial technical effects:
1. in the working process, the rotating assembly drives the mounting frame and the foam removing plate to rotate, ascending gas passes through the foam removing plate and then the tower plate, and the amount of mist carried in the gas can be reduced after foam is removed for a plurality of times, so that the concentration difference in the mass transfer process is ensured, and the efficiency of the tower plate is ensured; the reduction of entrainment can also reduce the heavy component content in the tower top product, which is helpful for improving the product quality.
2. Be provided with a plurality of bar holes on the defoaming board, a plurality of defoaming boards interval staggered arrangement for the defoaming board can guarantee the unblocked of gas flow when having reached the defoaming effect, helps guaranteeing the flow rate of gas, thereby guarantees the work efficiency of tower body.
3. The setting of waterproof apron and guide ring can weaken the influence of column plate weeping to the defoaming board, helps guaranteeing the defoaming effect of defoaming board, prolongs the life of defoaming board.
Drawings
FIG. 1 is a schematic overall structure of an embodiment of the present application;
FIG. 2 is a cross-sectional view of an embodiment of the present application;
FIG. 3 is an enlarged schematic view at A in FIG. 2;
fig. 4 is a cross-sectional view of an embodiment of the present application for illustrating a defoaming mechanism.
Reference numerals: 1. a tower body; 11. a liquid outlet pipe; 12. a feed pipe; 13. an air outlet pipe; 14. an air inlet pipe; 15. a return pipe; 16. a rubber pad; 2. a tray; 21. an overflow weir; 3. a defoaming mechanism; 31. a mounting frame; 311. a positioning rod; 32. a foam removal plate; 321. a bar-shaped hole; 322. a connecting rod; 323. positioning holes; 33. a rotating assembly; 331. a drive gear; 332. a driven toothed ring; 333. a motor; 334. a rotating shaft; 335. a first bevel gear pair; 3351. a first bevel gear; 3352. a second bevel gear; 336. a second bevel gear pair; 3361. a third bevel gear; 3362. a fourth bevel gear; 337. a connecting shaft; 4. a rotating rod; 41. a fan blade; 5. a guide ring; 6. a waterproof cover plate; 7. a partition plate; 71. a first drain hole; 8. a deflector; 81. an arc surface portion; 811. a rubber ring; 82. a planar portion; 821. a second drain hole; 9. a baffle; 91. a torsion spring; 10. an access door.
Detailed Description
The present application is described in further detail below with reference to the accompanying drawings.
The embodiment of the application discloses a pyran production system for glutaraldehyde synthesis. Referring to fig. 1 and 2, the pyran production system for glutaraldehyde synthesis comprises a column 1, a tray 2 and a defoaming mechanism 3. The tower body 1 is of a cylindrical hollow structure and is vertically arranged; the middle part of tower body 1 one side is provided with inlet pipe 12, and the top of tower body 1 is provided with outlet duct 13 that the opening is up, and the bottom of tower body 1 is provided with drain pipe 11 that the opening is down, and the bottom of tower body 1 is connected with intake pipe 14, and the top of tower body 1 is connected with back flow 15. The column plates 2 are fixedly arranged in the column body 1, the column plates 2 are provided with a plurality of column plates and are uniformly arranged at intervals along the height direction of the column body 1, and every two adjacent column plates 2 are arranged in a staggered mode and are in a ladder shape. One end of the column plate 2 is fixedly connected with an overflow weir 21, so that a liquid layer with a certain height can be maintained on the column plate 2, and a sufficient contact area of gas-liquid two phases on the column plate 2 can be ensured. The number of the defoaming mechanisms 3 is the same as that of the tower plates 2, each defoaming mechanism 3 is arranged below one tower plate 2, the defoaming mechanisms 3 can reduce mist in gas, concentration difference in the mass transfer process is guaranteed, and therefore efficiency of the tower plates 2 is guaranteed.
In the production process, firstly, a crude pyran solution enters the tower body 1 from a feed pipe 12, the crude pyran solution flows downwards, then the crude pyran solution is accumulated on the tower plate 2, and when the liquid layer on the tower plate 2 is higher than the top end of the overflow weir 21, the liquid flows downwards; in the flowing process of the liquid, the gas enters the tower body 1 from the gas inlet pipe 14, flows upwards, sequentially passes through each layer of defoaming mechanism 3 and the tower plate 2, is discharged from the gas outlet pipe 13, and flows back after being condensed and flows into the tower body 1 again through the return pipe 15. The falling liquid and the rising gas are contacted to transfer mass, thereby realizing separation. The entrainment of gas is reduced by the defoaming mechanism 3, so that the concentration difference in the mass transfer process can be ensured, and the efficiency of the tower plate 2 is ensured.
Referring to fig. 3, the defoaming mechanism 3 includes a mounting frame 31, a defoaming plate 32, and a rotating assembly 33. The installation frame 31 is a circular frame, the axis of the installation frame 31 is parallel to the height direction of the tower body 1, and the installation frame 31 is rotatably arranged in the tower body 1 around the axis thereof. The foam removing plate 32 comprises a supporting frame and a gas-liquid filter screen arranged in the supporting frame, the foam removing plate 32 is arranged in the mounting frame 31, the foam removing plate 32 is a circular plate, and the diameter of the foam removing plate 32 is the same as the inner diameter of the mounting frame 31, so that the outer wall of the foam removing plate 32 is abutted with the inner wall of the mounting frame 31; the defoaming plates 32 are provided in plurality and are uniformly spaced along the axial direction of the mounting frame 31; the foam removing plate 32 is provided with a plurality of parallel strip-shaped holes 321, the length direction of each strip-shaped hole 321 is parallel to the surface of the foam removing plate 32, and the strip-shaped holes 321 on two adjacent foam removing plates 32 are arranged in a staggered manner, so that the contact area between gas and the foam removing plate 32 can be increased, and the foam removing effect can be enhanced. The rotating component 33 is used for driving the mounting frame 31 and the foam removing plate 32 to rotate, and the rotating component 33 is provided with two groups, is distributed on two sides of the tower body 1 and corresponds to the tower plates 2 on the two sides respectively.
When the gas passes through the defoaming plate 32, the mist collides with the filaments of the gas-liquid filter screen and adheres to the surfaces of the filaments by the inertia of the rising mist in the gas. The spreading of the mist and the gravitational settling of the mist on the surface of the filaments causes the mist to form larger droplets that flow along the filaments to the junction of the two filaments. The wettability of the filaments, the surface tension of the liquid and the capillary action of the filaments cause the droplets to become larger and larger, and the droplets separate from the filaments and fall down until the accumulated droplets are so large that their own weight exceeds the resultant force of the lifting force of the gas and the surface tension of the liquid. The arrangement of the rotating assembly 33 subjects the droplets to centrifugal forces and thus further accelerates the falling velocity of the liquid, thereby achieving a reduction in entrainment in the gas.
Referring to fig. 2 and 4, the rotation assembly 33 includes a driving part and a transmission part. The driving means includes a driving gear 331 and a driven gear ring 332. The driven gear rings 332 are provided with a plurality of same number as the number of the trays 2 on one side, and each driven gear ring 332 is coaxially and fixedly connected to the outer wall of one mounting frame 31. The number of the driving gears 331 is the same as that of the driven toothed rings 332, and each driving gear 331 corresponds to one driven toothed ring 332, the driving gears 331 are rotatably arranged on the inner wall of the tower body 1, the axes of the driving gears 331 are vertically arranged, and the driving gears 331 are meshed with the corresponding driven toothed rings 332.
The transmission components include a rotary power member, a rotary shaft 334, and a transmission member. The rotary power part is a motor 333, the motor 333 is fixedly connected to the outer wall of the tower body 1 through a bolt, and the output shaft of the motor 333 faces upwards vertically. The rotating shaft 334 is coaxially and fixedly connected to the output shaft of the motor 333. The transmission members are provided with a plurality of groups, the number of the transmission members is the same as that of the tower plates 2 at one side, and the transmission members are used for connecting the rotating shaft 334 with the driving gears 331 in a transmission manner. The transmission includes a first bevel gear pair 335, a second bevel gear pair 336, and a connecting shaft 337. Through holes are formed in the outer wall of the tower body 1, the number of the through holes is the same as that of the connecting shafts 337, the connecting shafts 337 penetrate through the corresponding through holes, and the connecting shafts 337 are arranged along the radial direction of the tower body 1. Further, the inner wall of the through hole is adhered with the annular rubber pad 16, and the inner diameter of the rubber pad 16 is the same as the diameter of the connecting shaft 337, so that the sealing effect of the through hole can be enhanced, and the heat loss in the tower body 1 can be reduced. The first bevel gear pair 335 includes first bevel gear 3351 and second bevel gear 3352, and the second bevel gear pair 336 includes third bevel gear 3361 and fourth bevel gear 3362, and first bevel gear 3351 coaxial fixed connection is on pivot 334, and second bevel gear 3352 and third bevel gear 3361 coaxial fixed connection are respectively in the both ends of connecting axle 337, and second bevel gear 3352 is located the outside of tower body 1, and third bevel gear 3361 is located the inboard of tower body 1, and fourth bevel gear 3362 and driving gear 331 coaxial fixed connection.
So the motor 333 can drive the first bevel gear 3351 to rotate through the rotating shaft 334 after being started, the first bevel gear 3351 drives the second bevel gear 3352 to rotate, the second bevel gear 3352 drives the third bevel gear 3361 to rotate through the connecting shaft 337, the third bevel gear 3361 drives the fourth bevel gear 3362 to rotate, the fourth bevel gear 3362 drives the driving gear 331 to rotate, the driving gear 331 drives the driven gear ring 332 to rotate, and the driven gear ring 332 drives the corresponding mounting frame 31 to rotate, so that the foam removing plate 32 in the mounting frame 31 is driven to rotate, the foam removing plate 32 can fully contact with rising gas, and mist in the gas is filtered, so that the purpose of enhancing the foam removing effect is achieved.
Further, the bottom fixedly connected with bull stick 4 of installing frame 31, the axis of rotation of bull stick 4 and installing frame 31 is coaxial setting, fixedly connected with flabellum 41 on the lateral wall of bull stick 4, flabellum 41 is provided with a plurality ofly, and is the circumference and arranges, flabellum 41 and bull stick 4 all are located the foam removal board 32 under, therefore when rotating assembly 33 drives installing frame 31 and rotates, installing frame 31 can drive bull stick 4 and flabellum 41 rotation to the air flow in the acceleration tower body 1, make the gas more flow upwards, help guaranteeing the efficiency of column plate 2.
In order to reduce the influence of the liquid leakage of the tower plate 2 on the foam removing plate 32, a guide ring 5 is fixedly connected to the top of the mounting frame 31 on the inner wall of the tower body 1 through bolts, the guide ring 5 and the mounting frame 31 are coaxially arranged, openings are formed in the upper end and the lower end of the guide ring 5, the diameter of the opening in the bottom of the guide ring 5 is the same as the outer diameter of the mounting frame 31, and the bottom wall of the guide ring 5 is abutted to the outer wall of the mounting frame 31; the opening diameter of the top of the guide ring 5 is smaller than the inner diameter of the mounting frame 31. The top of leading ring 5 is passed through bolt fixedly connected with waterproof apron 6 on the inner wall of tower body 1, and waterproof apron 6 is located the below of corresponding column plate 2, and waterproof apron 6 is bottom open-ended round platform column structure, waterproof apron 6 and leading ring 5 coaxial setting, and the diameter of waterproof apron 6 is greater than leading ring 5 open-top's diameter. Thus, when the liquid passing through the tray 2 falls, the liquid falls onto the waterproof cover plate 6, and then flows onto the outer wall of the top of the guide ring 5 along the edge of the waterproof cover plate 6, and then flows down along the outer wall of the guide ring 5. So the arrangement of the waterproof cover plate 6 and the guide ring 5 can prevent the liquid passing through the tower plate 2 from flowing to the foam removing plate 32, thereby ensuring the smoothness of the foam removing plate 32, being beneficial to the normal use of the foam removing plate 32 and prolonging the service life of the foam removing plate 32.
Owing to set up guide ring 5 and defoaming board 32, after the gas passes through defoaming board 32, guide ring 5 and waterproof apron 6 in proper order, because waterproof apron 6 blocks, partial gas can produce the trend of downwardly flowing, in order to make the gas after the defoaming all can upwards flow, guarantee the gas flow rate in the tower body 1, be provided with division board 7 between the inner wall of tower body 1 and guide ring 5, division board 7 is annular structure, division board 7's inboard offsets with guide ring 5's outer wall, division board 7's outside then simultaneously with tower body 1's inner wall and overflow weir 21 fixed connection, therefore division board 7 can separate guide ring 5's upper and lower both sides. After the gas flows out from between the waterproof cover plate 6 and the guide ring 5, the gas can continuously flow upwards due to the blocking of the partition plate 7, so that the flow direction of the gas is limited, the flow speed of the gas is ensured, the possibility of liquid leakage of the tower plate 2 is reduced, and the gas can be fully contacted with the liquid layer on the tower plate 2. The partition plate 7 is provided with a plurality of first liquid discharge holes 71, the first liquid discharge holes 71 are arranged in a circumferential array, and the first liquid discharge holes 71 can discharge liquid falling through the tower plate 2, so that the liquid is prevented from accumulating on the partition plate 7.
In order to enhance the defoaming effect on gas, a guide plate 8 is fixedly connected to the bottom of the mounting frame 31 on the inner wall of the tower body 1, the guide plate 8 comprises an arc surface part 81 and a plane surface part 82, a rubber ring 811 is bonded to the outer wall of the top end of the arc surface part 81, one side of the rubber ring 811 away from the arc surface part 81 abuts against the inner wall of the bottom of the mounting frame 31, and sliding sealing is formed between the rubber ring 811 and the mounting frame 31; the plane 82 is fixedly connected to the bottom end of the cambered surface 81, and two sides of the outer part of the plane 82 are fixedly connected with the inner wall of the tower body 1 and the overflow weir 21 respectively. Therefore, under the separation and guiding actions of the guide plate 8, gas can enter the installation frame 31 through the guide plate 8, and flow out of the top of the installation frame 31 after being defoamed through the defoamed plate 32, so that the amount of the gas which directly flows upwards without defoamed is reduced, and the gas can be sufficiently defoamed.
Further, the plane portion 82 of the baffle 8 is provided with a plurality of second drain holes 821, and the second drain holes 821 are distributed at intervals. The baffle 8 is provided with a blocking member at the second drain hole 821, and the blocking member is a baffle 9 and a torsion spring 91. The baffle plate 9 is arranged at the bottom side of the plane part 82, the area of the baffle plate 9 is larger than that of the second liquid discharge hole 821, the torsion spring 91 is connected between the baffle plate 9 and the bottom wall of the plane part 82, and the torsion spring 91 enables the baffle plate 9 to be abutted against the bottom wall of the plane part 82 at the position of the second liquid discharge hole 821. The torsion spring 91 is arranged to enable the baffle 9 to only rotate downwards to open the second liquid discharge hole 821, so that after the liquid leaked from the tray 2 flows down from the first liquid discharge hole 71, the liquid on the plane part 82 is accumulated to a certain degree to enable the baffle 9 to rotate downwards, thereby enabling the second liquid discharge hole 821 to be opened, and the liquid flows down through the second liquid discharge hole 821; normally, the baffle 9 closes the second drain hole 821, and the gas cannot flow upward through the second drain hole 821, thereby reducing the amount of the gas without defoaming.
In order to facilitate the regular maintenance or replacement of the foam removal plates 32 installed in the mounting frames 31, the foam removal plates 32 are detachably connected to the mounting frames 31, and correspondingly, the access door 10 is hinged to the tower body 1 at a corresponding height of each mounting frame 31. The plurality of foam removing plates 32 are arranged in parallel at intervals, connecting rods 322 are arranged between the foam removing plates 32 in a penetrating way, and the connecting rods 322 are perpendicular to the foam removing plates 32, so that the plurality of foam removing plates 32 are fixedly connected together through the connecting rods 322; the foam removing plate 32 is provided with a positioning hole 323, the inner wall of the mounting frame 31 is fixedly connected with a positioning rod 311, the positioning hole 323 is sleeved in the corresponding positioning rod 311, the foam removing plate 32 can be limited to rotate relative to the mounting frame 31, and the foam removing plate 32 can be driven to rotate when the mounting frame 31 rotates. To further limit the defoaming plate 32, the top end of the positioning rod 311 is screwed with a locking nut, so that the defoaming plate 32 is limited to move in the vertical direction.
When the foam removing plate 32 is replaced, the access door 10 is only required to be opened, then the waterproof cover plate 6 and the guide ring 5 are detached, then the lock nut is screwed down, the foam removing plate 32 is slid upwards and taken out, and the foam removing plate 32 is replaced and reinstalled in the tower body 1, so that the foam removing effect of the foam removing plate 32 is guaranteed.
The implementation principle of the pyran production system for glutaraldehyde synthesis in the embodiment of the application is as follows: when the crude pyran is distilled and purified, the crude pyran solution is firstly led to flow downwards in the tower body 1 from the feeding pipe 12, and at the same time, the gas at the bottom of the tower body 1 flows upwards; the crude pyran solution firstly falls onto a column plate 2 in the middle of the column body 1, after a liquid layer with a certain height is accumulated on the column plate 2, the liquid flows downwards onto the next column plate 2 over an overflow weir 21, and along with the continuous flow of the liquid, the liquid is discharged from a liquid outlet pipe 11 at the bottom of the column body 1. In the process of downward flowing of liquid, gas flows upwards, meanwhile, the motor 333 drives the rotating shaft 334 to rotate, the rotating shaft 334 drives the driving gear 331 to rotate through the first bevel gear pair 335 and the second bevel gear pair 336, the driving gear 331 drives the driven gear ring 332 to rotate, the driven gear ring 332 drives the corresponding mounting frame 31 to rotate, the mounting frame 31 drives the foam removing plate 32 and the fan blades 41 to rotate, when the gas rises, the foam removing plate 32 firstly filters mist carried in the gas, then the gas after foam removal continuously rises, and then fully contacts with a liquid layer on the tower plate 2 after penetrating through the tower plate 2 to carry out mass transfer; because the tower body 1 is internally provided with a plurality of defoaming mechanisms 3, rising gas can be subjected to defoaming treatment for a plurality of times, so that entrainment in the gas is reduced, concentration difference in the mass transfer process is guaranteed, and the efficiency of the tower plate 2 is guaranteed.
When the tray 2 generates the liquid leakage phenomenon, the liquid passing through the tray 2 falls to the top of the waterproof cover plate 6, then flows downwards to the outer wall of the top of the guide ring 5 along the waterproof cover plate 6, then is discharged to the guide plate 8 from the first liquid discharge holes 71 on the partition plate 7, after the liquid on the guide plate 8 is accumulated to a certain extent, the baffle 9 rotates downwards due to the gravity of the liquid, the second liquid discharge holes 821 are opened, and the liquid flows downwards from the second liquid discharge holes 821, so that the influence of the liquid leakage of the tray 2 on the foam removal plate 32 can be weakened due to the arrangement of the waterproof cover plate 6 and the guide ring 5, the smoothness of the foam removal plate 32 is guaranteed, and the foam removal effect of the foam removal plate 32 is guaranteed.
After the distillation and purification of the crude pyran are completed, the glutaraldehyde product can be obtained by hydrolyzing the product.
The foregoing is an alternative embodiment of the present application, and is not intended to limit the scope of the present application in this way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.
Claims (9)
1. A pyran production system for glutaraldehyde synthesis, characterized in that: including tower body (1), set up column plate (2) and defoaming mechanism (3) in tower body (1), the bottom of tower body (1) is provided with drain pipe (11), column plate (2) are provided with a plurality of and follow the direction of height interval setting of tower body (1), defoaming mechanism (3) correspond column plate (2) and are provided with a plurality of, each defoaming mechanism (3) all set up in one side that corresponds column plate (2) and be close to drain pipe (11), defoaming mechanism (3) are including rotating installation frame (31) that set up in tower body (1), set up defoaming plate (32) on installation frame (31) and set up rotating assembly (33) in installation frame (31) one side, defoaming plate (32) are provided with a plurality of and follow the direction of height interval setting of tower body (1), each defoaming plate (32) are last to have all offered a plurality of parallel arrangement's bar hole (321), two the hole (321) that intersect on adjacent defoaming plate (32) are located on the rotation frame (31), rotation assembly (31) are used for the installation frame (31) is the rotation axis, the rotation assembly is the rotation axis (31).
2. The pyran production system for glutaraldehyde synthesis according to claim 1, characterized in that: the rotating assembly (33) comprises a driving part and a transmission part, the driving part comprises a driving gear (331) arranged in the tower body (1) in a rotating mode and driven toothed rings (332) coaxially arranged on the mounting frame (31), the number of the driving gears (331) is the same as that of the driven toothed rings (332), the driving gears (331) are meshed with the corresponding driven toothed rings (332), and the transmission part is used for driving the driving gear (331) to rotate.
3. The pyran production system for glutaraldehyde synthesis according to claim 2, characterized in that: the transmission part comprises a rotary power part, a rotating shaft (334) and a transmission part, wherein the rotary power part is arranged on the tower body (1), the rotating shaft (334) is coaxially connected to the output end of the rotary power part, and the rotating shaft (334) is parallel to the height direction of the tower body (1); the number of the transmission parts is the same as that of the driving gears (331), each transmission part corresponds to one driving gear (331), and each transmission part comprises a first bevel gear pair (335), a second bevel gear pair (336) and a connecting shaft (337); the utility model discloses a tower body, including tower body (1) and connecting axle (337), first bevel gear pair (335) are located tower body (1) outside, second bevel gear pair (336) are located tower body (1), connecting axle (337) are connected between first bevel gear pair (335) and second bevel gear pair (336), first bevel gear pair (335) links to each other with pivot (334), second bevel gear pair (336) link to each other with corresponding driving gear (331).
4. The pyran production system for glutaraldehyde synthesis according to claim 1, characterized in that: one side of the mounting frame (31) close to the liquid outlet pipe (11) is provided with a fan blade (41), and the rotation axis of the fan blade (41) is coaxial with the rotation axis of the mounting frame (31).
5. The pyran production system for glutaraldehyde synthesis according to claim 1, characterized in that: the foam removing plate (32) is a circular plate, one side, far away from the liquid outlet pipe (11), of the mounting frame (31) is provided with a guide ring (5), a waterproof cover plate (6) is arranged between the guide ring (5) and the corresponding tower plate (2) in the tower body (1), and the diameter of an opening, far away from the mounting frame (31), of the guide ring (5) is smaller than the diameter of the waterproof cover plate (6) and smaller than the diameter of the foam removing plate (32).
6. The pyran production system for glutaraldehyde synthesis according to claim 5, wherein: be provided with division board (7) between the inner wall of tower body (1) and guide ring (5), division board (7) are annular, the inward flange of division board (7) is contacted with guide ring (5), the outward flange of division board (7) links to each other with the inner wall of tower body (1), a plurality of first flowing back holes (71) have been seted up on division board (7).
7. The pyran production system for glutaraldehyde synthesis according to claim 1, characterized in that: the utility model discloses a liquid discharge device, including tower body (1), baffle (8) are provided with on the inner wall of tower body (1) in one side that installing frame (31) is close to drain pipe (11), baffle (8) are annular, the inward flange of baffle (8) contacts with the inner wall of installing frame (31), the outward flange of baffle (8) links to each other with tower body (1) inner wall, be provided with a plurality of second flowing back holes (821) on baffle (8), be provided with on baffle (8) in second flowing back hole (821) department and be used for with second flowing back hole (821) confined barrier.
8. The pyran production system for glutaraldehyde synthesis according to claim 7, characterized in that: the blocking piece comprises a baffle plate (9) arranged at a second liquid discharge hole (821) on the guide plate (8) and a torsion spring (91) arranged between the guide plate (8) and the baffle plate (9), wherein the baffle plate (9) is positioned at one side, close to the liquid outlet pipe (11), of the guide plate (8), and the torsion spring (91) enables the baffle plate (9) to generate a trend of propping against the second liquid discharge hole (821) of the guide plate (8).
9. The pyran production system for glutaraldehyde synthesis according to claim 7, characterized in that: an access door (10) is movably arranged on the outer side of each mounting frame (31) of the tower body (1).
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| CN202311315808.4A CN117379807B (en) | 2023-10-11 | 2023-10-11 | Pyran production system for glutaraldehyde synthesis |
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| CN202311315808.4A CN117379807B (en) | 2023-10-11 | 2023-10-11 | Pyran production system for glutaraldehyde synthesis |
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