CN115007092A - Reaction kettle system for nylon (PA) preparation process - Google Patents
Reaction kettle system for nylon (PA) preparation process Download PDFInfo
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- CN115007092A CN115007092A CN202210632558.6A CN202210632558A CN115007092A CN 115007092 A CN115007092 A CN 115007092A CN 202210632558 A CN202210632558 A CN 202210632558A CN 115007092 A CN115007092 A CN 115007092A
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- nylon
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 77
- 229920001778 nylon Polymers 0.000 title claims abstract description 39
- 239000004677 Nylon Substances 0.000 title claims abstract description 36
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 238000003756 stirring Methods 0.000 claims abstract description 151
- 239000002994 raw material Substances 0.000 claims abstract description 83
- 238000010438 heat treatment Methods 0.000 claims abstract description 30
- 238000007599 discharging Methods 0.000 claims abstract description 6
- 238000004140 cleaning Methods 0.000 claims description 10
- 238000005273 aeration Methods 0.000 claims description 5
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 3
- WPPDFTBPZNZZRP-UHFFFAOYSA-N aluminum copper Chemical compound [Al].[Cu] WPPDFTBPZNZZRP-UHFFFAOYSA-N 0.000 claims description 3
- 238000005485 electric heating Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 4
- 238000002156 mixing Methods 0.000 abstract description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 65
- 239000007789 gas Substances 0.000 description 30
- 229910052757 nitrogen Inorganic materials 0.000 description 29
- 238000000034 method Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 14
- 238000013019 agitation Methods 0.000 description 10
- 229910001873 dinitrogen Inorganic materials 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007306 functionalization reaction Methods 0.000 description 1
- 230000009349 indirect transmission Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/09—Stirrers characterised by the mounting of the stirrers with respect to the receptacle
- B01F27/091—Stirrers characterised by the mounting of the stirrers with respect to the receptacle with elements co-operating with receptacle wall or bottom, e.g. for scraping the receptacle wall
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/15—Stirrers with tubes for guiding the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/55—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers driven by the moving material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/10—Maintenance of mixers
- B01F35/11—Maintenance of mixers using fluids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/10—Maintenance of mixers
- B01F35/12—Maintenance of mixers using mechanical means
- B01F35/123—Maintenance of mixers using mechanical means using scrapers for cleaning mixers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/14—Production of inert gas mixtures; Use of inert gases in general
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/2805—Mixing plastics, polymer material ingredients, monomers or oligomers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The invention belongs to the technical field of nylon preparation, and particularly relates to a reaction kettle system for a nylon (PA) preparation process. The reaction kettle system comprises a kettle body, a support frame, a feeding hole, a discharging hole, a heating module and a stirring module; the support frame is arranged at the bottom of the kettle body, the feeding hole is arranged at the top of the kettle body, the discharging hole is arranged at the middle position of the bottom of the kettle body, the heating module is arranged on the inner wall of the kettle body and used for heating the interior of the kettle body, and the stirring module is used for stirring the raw materials in the kettle body; according to the invention, by starting the working motor, the output shaft of the working motor is started and drives the stirring shaft to rotate, the stirring plate on the stirring shaft rotates, and the mixing of reaction raw materials in the vertical direction is accelerated while the mixing of the reaction raw materials in the horizontal direction is accelerated.
Description
Technical Field
The invention belongs to the technical field of nylon preparation, and particularly relates to a reaction kettle system for a nylon (PA) preparation process.
Background
Nylon fibers have a range of excellent properties, but also suffer from disadvantages such as low modulus, poor light and heat resistance, susceptibility to aging, poor antistatic properties, and the like. With the improvement of living standard, people have not completely satisfied the warm-keeping effect brought by the traditional fiber, and pursue functionalization, refinement, healthization and quality improvement more. Compared with developed countries, the nylon fiber products with independent intellectual property rights in China are few, the varieties used for industrialization are fewer, the price of the nylon fiber is higher than that of polyester fiber, and fiber series products are required to be positioned at a high-end level to ensure the competitiveness of enterprises.
In the process of preparing nylon, a reaction kettle is utilized to fully stir and heat the nylon raw material, and whether the full degree relation between stirring and heating of the reaction raw material can more optimally play the role of functional particles or not is determined in the process, so that the quality of the finally obtained nylon is improved; the heating device of reation kettle among the prior art often sets up at the inner wall portion, cause inside being close to the inner wall position of reation kettle and keep away from the raw materials at inner wall position and be heated inhomogeneously, and agitating unit among the prior art, on the one hand be difficult to realize accelerating the exchange of the raw materials that is close to the inner wall position and keeps away from the inner wall position, make the raw materials fully react, equally also be difficult to accelerating the vertical direction, on the different level, the mixed degree of reaction raw materials, like this also can't improve because the different vertical height that probably cause of various composition density differences in the reaction raw materials go up the composition content difference, finally all can influence the nylon quality who obtains.
In view of the above, the present invention provides a reaction kettle system for nylon (PA) preparation process to solve the above technical problems.
Disclosure of Invention
In order to make up for the deficiency of the prior art, the technical scheme adopted by the invention for solving the technical problem is as follows: a reaction kettle system for a nylon (PA) preparation process comprises a kettle body, a support frame, a feeding hole, a discharging hole, a heating module and a stirring module;
the support frame is installed at the bottom of the kettle body, the feed inlet is arranged at the top of the kettle body, the discharge outlet is arranged in the middle of the bottom of the kettle body, the heating module is installed on the inner wall of the kettle body and used for heating the interior of the kettle body, and the stirring module is used for stirring raw materials in the kettle body;
the stirring module includes:
the working motor is arranged at the top of the kettle body;
the stirring shaft is arranged in the kettle body, and the top of the stirring shaft is driven by an output shaft of the working motor;
the stirring plates are uniformly arranged on the side wall of the stirring shaft;
and the inflation module is connected with the stirring shaft and used for outputting airflow through the stirring shaft and improving the stirring degree.
Preferably, the stirring module further includes:
the aeration tank is horizontally arranged in the middle of the inner part of the stirring plate;
the pushing rod is slidably arranged inside the air charging groove, and the end part of the pushing rod extends out of the end part of the stirring plate;
the scraper is vertically arranged at the end part of the push rod;
the impact holes are uniformly arranged at the end part of the scraper and communicated with the interior of the inflation groove;
and the stirring shaft is of a tubular structure, and the inner cavity of the stirring shaft is communicated with the aeration tank.
Preferably, a power box is installed on the inner wall of the top of the kettle body, the end part of the stirring shaft and the end part of the output shaft of the working motor both extend into the power box and are staggered with each other, a first gear is arranged at the end part of the stirring shaft, a second gear is arranged at the end part of the working motor, and the first gear and the second gear are meshed with each other; and the top of the stirring shaft is provided with a gas pipe through a rotary joint, and the gas pipe is communicated with an external air pump.
Preferably, the stirring plate is arranged obliquely.
Preferably, the stirring plates corresponding to the same vertical direction on the stirring shaft are in a group, the stirring plates in the same group are in an even number, and the inclination directions of the adjacent stirring plates in the vertical direction are opposite.
Preferably, the side wall of the inflation groove is provided with an electric heating wire, and the side wall of the inflation groove is made of aluminum-copper alloy.
Preferably, the scraper blade slope sets up, just the impact hole is in along vertical direction evenly distributed the scraper blade is close to on the cauldron body both sides tip.
Preferably, the parts of the end parts of the two sides of the kettle body, which correspond to the impact holes, are provided with air grooves, and the cross sections of the air grooves are trapezoidal.
Preferably, the adjacent stirring plates in the same group are uniformly provided with crushing hook blocks at opposite positions, and the crushing hook blocks on the adjacent stirring plates are arranged in a staggered manner.
Preferably, the crushing hook block is hollow inside and communicated with the inside of the aeration groove; and the crushing hook block is bent, cleaning holes are uniformly formed in the bent part of the crushing hook block, and the cleaning holes are communicated with the hollow part in the crushing hook block.
The invention has the following beneficial effects:
1. according to the reaction kettle system for the nylon (PA) preparation process, the working motor is started, the output shaft of the working motor is started to drive the stirring shaft to rotate, the stirring plate on the stirring shaft rotates, and the reaction raw materials are accelerated to be mixed in the horizontal direction and in the vertical direction at the same time.
2. According to the reaction kettle system for the nylon (PA) preparation process, nitrogen with certain pressure is input into the stirring shaft, flows along the vertical cavity inside the stirring shaft and flows into the inflation groove inside the stirring plate, on one hand, the push rod in sliding connection in the inflation groove is pushed to move, so that the end part of the push rod is close to the inner wall of the kettle body, reaction raw materials positioned between the end part of the stirring plate and the inner part of the kettle body in the horizontal direction are effectively stirred in the process, and the exchange of the raw materials close to the inner part of the kettle body and the inner wall part of the kettle body is driven and accelerated, so that the raw materials are reacted more fully and heated more uniformly; on the other hand, a part of nitrogen flows into the pushing rod through the air hole arranged in the middle of the pushing rod, the scraper plate is hollow, the nitrogen flows in the hollow part in the scraper plate and flows out through the impact hole, and the nitrogen is filled in the kettle body to extrude the internal air to be discharged through the air outlet hole in the top of the kettle body, so that the air replacement effect is realized;
drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a perspective view of the construction of the stirring module of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 2 at A;
FIG. 5 is an enlarged view of a portion of FIG. 2 at B;
FIG. 6 is a cross-sectional view of the squeegee;
in the figure: the device comprises a kettle body 1, a support frame 2, a feeding hole 3, a discharging hole 4, a stirring module 5, a working motor 51, a second gear 511, a stirring shaft 52, a first gear 521, a stirring plate 53, a crushing hook block 531, a cleaning hole 532, an inflation module 54, an inflation groove 541, an air pipe 542, a push rod 55, a scraping plate 56, an impact hole 57, an air groove 571 and a power box 6.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
The reaction kettle system for the nylon (PA) preparation process shown in the figures 1 to 6 comprises a kettle body 1, a support frame 2, a feeding hole 3, a discharging hole 4, a heating module and a stirring module 5;
the support frame 2 is installed at the bottom of the kettle body 1, the feed inlet 3 is arranged at the top of the kettle body 1, the discharge outlet 4 is arranged at the middle position of the bottom of the kettle body 1, the heating module is installed on the inner wall of the kettle body 1 and used for heating the interior of the kettle body 1, and the stirring module 5 is used for stirring raw materials in the kettle body 1;
the stirring module 5 includes:
the working motor 51, the said working motor 51 is installed on the top of the said kettle body 1;
the stirring shaft 52 is installed inside the kettle body 1, and the top of the stirring shaft 52 is driven by an output shaft of the working motor 51;
the stirring plates 53 are uniformly arranged on the side wall of the stirring shaft 52;
and the aeration module 54 is connected with the stirring shaft 52, and is used for outputting airflow through the stirring shaft 52 to improve the stirring degree.
The stirring module 5 further includes:
the gas filling tank 541 is horizontally arranged in the middle inside the stirring plate 53;
a push rod 55, wherein the push rod 55 is slidably installed inside the gas charging groove 541, and the end of the push rod 55 extends out of the end of the stirring plate 53; for example, the end of the push rod 55 is provided with a slip-off prevention portion, and the end of the inflation groove 541 is provided with a locking portion for being engaged with the slip-off prevention portion to prevent the push rod 55 from slipping off.
A scraper 56, wherein the scraper 56 is vertically arranged at the end part of the pushing rod 55;
the impact holes 57 are uniformly arranged at the end part of the scraper 56, and are communicated with the inside of the inflation groove 541;
the stirring shaft 52 is of a tubular structure, and the inner cavity of the stirring shaft 52 is communicated with the inflation groove 541.
When the device works, in the nylon preparation process flow, the reaction kettle is utilized to fully stir and heat the nylon raw material, and whether the full degree of stirring and heating of the reaction raw material can play the role of functional particles more optimally is related in the process, so that the quality of the finally obtained nylon is improved; the heating device of the reaction kettle in the prior art is often arranged on the inner wall part, so that raw materials close to the inner wall part and far from the inner wall part in the reaction kettle are heated unevenly, and the stirring device in the prior art is difficult to accelerate the exchange of the raw materials close to the inner wall part and far from the inner wall part on the one hand, so that the raw materials are fully reacted, and is also difficult to accelerate the mixing degree of the reaction raw materials in the vertical direction and different horizontal heights, so that the problem that the content of components in the reaction raw materials is different at different vertical heights possibly caused by different component densities cannot be solved, and the quality of the obtained nylon is influenced finally;
in order to solve the above mentioned technical problems, the reaction kettle equipment of the present application pours the reaction raw materials into the kettle body 1 through the feeding port 3, and closes the feeding port 3, and then starts the stirring module 5 and the heating module inside the kettle body 1, wherein the heating module can adopt a heating device commonly adopted in the reaction kettle in the prior art, such as a microwave heating device, and the basic structure and the working principle thereof are the same as those in the prior art; when the stirring module 5 is started, firstly, the working motor 51 is started, the output shaft of the working motor 51 is started and drives the stirring shaft 52 to rotate, the stirring plate 53 on the stirring shaft 52 rotates, and the mixing of reaction raw materials in the vertical direction is accelerated while the mixing of the reaction raw materials in the horizontal direction is accelerated; specifically, in order to avoid the influence of components in the air remaining in the kettle body 1 on the reaction raw materials, nitrogen is filled to replace the air, the inflation module 54 is connected with the agitation shaft 52 with a tubular structure, the nitrogen with a certain pressure is input into the agitation shaft 52, the nitrogen flows along a vertical cavity in the agitation shaft 52 and flows into the inflation groove 541 in the agitation plate 53, on one hand, the push rod 55 in the inflation groove 541 in sliding connection is pushed to move, so that the end part of the push rod 55 is close to the inner wall of the kettle body 1, in the process, the reaction raw materials between the end part of the agitation plate 53 and the kettle body 1 in the horizontal direction are effectively agitated, and the exchange of the raw materials close to the inner part of the kettle body 1 and the inner wall part of the kettle body 1 in the principle is driven and accelerated, so that the raw materials are reacted more fully and heated more uniformly; on the other hand, a part of nitrogen flows into the pushing rod 55 through the air hole arranged in the middle of the pushing rod 55, the scraper 56 is hollow, the nitrogen flows in the hollow part in the scraper 56 and flows out through the impact hole 57, the nitrogen is filled in the kettle body 1 to extrude the internal air to be discharged through the air outlet hole in the top of the kettle body 1, and the air replacement effect is realized;
further, in the process, the gas valve at the connecting position of the cavity inside the gas charging groove 541 and the stirring shaft 52 is controlled by an external controller, in the working process, the gas valve in the gas charging groove 541 at the bottom is firstly started, so that nitrogen firstly flows out through the gas charging groove 541 inside the stirring plate 53 at the bottom and the impact hole 57, the nitrogen is filled in the kettle body 1 from bottom to top, the inside of the kettle body 1 is fully discharged by residual air inside the kettle body 1, the exchange of reaction raw materials with different vertical heights is accelerated when the nitrogen flows upwards, the mixing degree of the reaction raw materials is increased, and the quality of finally obtained nylon products is improved.
As a specific embodiment of the present invention, a power box 6 is installed on an inner wall of a top of the kettle 1, an end of the stirring shaft 52 and an end of an output shaft of the working motor 51 both extend into the power box 6 and are staggered with each other, and the end of the stirring shaft 52 and the end of the output shaft of the working motor 51 are both rotationally connected to a sidewall of the power box 6, a first gear 521 is disposed at the end of the stirring shaft 52, a second gear 511 is disposed at the end of the working motor 51, the first gear 521 is engaged with the second gear 511, and the power box 6 is configured to provide a closed lubrication condition for the first gear 521 and the second gear 511, without causing a lubricant to pollute a reaction raw material inside the kettle 1; and the top of the stirring shaft 52 is provided with an air pipe 542 through a rotary joint, and the air pipe 542 is communicated with an external air pump.
In operation, in order to ensure normal input of nitrogen into the stirring shaft 52, indirect transmission is realized through the matching of the first gear 521 and the second gear 511, so that the air pipe 542 is connected with the top of the stirring shaft 52 through a rotary joint, and thus when the output shaft of the motor rotates and the stirring shaft 52 rotates through the meshing action of the first gear 521 and the second gear 511, the rotary joint plays a role, so that the air pipe 542 keeps immovable relative to the rotating stirring shaft 52, the stirring shaft 52 rotates smoothly without winding the air pipe 542, and the air pipe 542 can smoothly input nitrogen into the cavity in the stirring shaft 52; an operator can control the flow of the air pump connected with the air pipe 542 from the outside to ensure that the flow is periodically changed from large to small, so that the nitrogen pressure in the inflation tank 541 is also periodically changed, and the push rod 55 is periodically and repeatedly stretched under the action of the air pressure change and the connected spring, so as to drive the scraper 56 to repeatedly move, so that the reaction raw materials positioned between the inner wall of the kettle body 1 and the end part of the stirring plate 53 are fully stirred; and when catch bar 55 stretches out the maximum distance, the clearance between the tip of scraper blade 56 and the internal wall of cauldron body 1 is about 3-5mm, therefore when needing to export the raw materials, through maximum output nitrogen gas, catch bar 55 stretches out the maximum distance, the nitrogen gas that the shock hole 57 on scraper blade 56 flows strikes the internal wall of cauldron body 1 repeatedly, make the adnexed raw materials flow with higher speed under the impact, and flow from discharge gate 4 on the internal wall, reduce adnexed raw materials on the internal wall, when improving the output rate of raw materials, the work load of the clean internal wall of cauldron of later stage 1 has been reduced.
As a specific embodiment of the present invention, the stirring plate 53 is disposed obliquely; the stirring plates 53 corresponding to the same vertical direction on the stirring shaft 52 are in a group, the stirring plates 53 in the same group are even numbers, and the inclination directions of the adjacent stirring plates 53 in the vertical direction are opposite.
During operation, because the stirring plate 53 is obliquely arranged, when the stirring plate 53 rotates, the flow velocity of the raw materials contacting with the inclined surface of the stirring plate 53 in the vertical direction is increased when the raw materials flow along the inclined surface, so that the flow of the raw materials in the kettle body 1 in the vertical direction is improved, and the reaction raw materials are more fully mixed; and because in the vertical direction, the inclination directions of the adjacent stirring plates 53 are opposite, so that the adjacent stirring plates 53 act on the opposite flow directions of the vertically flowing raw materials, so that the raw materials are impacted and mixed with each other, the mixing degree of the reaction raw materials in the vertical direction in the kettle body 1 is further promoted, and the quality of the finally obtained nylon product is further improved.
As a specific embodiment of the present invention, an electric heating wire is disposed on a sidewall of the inflation tank 541, and the sidewall of the inflation tank 541 is made of an aluminum-copper alloy.
The during operation, for the raw materials that the messenger is located the internal portion of cauldron 1 is heated more evenly, through circular telegram to the heating wire, make the inside flowing nitrogen gas of heating wire heating inflation tank 541, thereby make the nitrogen gas that flows out through jump bit 57 have the heat and when being full of the internal portion of cauldron, give the reaction raw materials at the internal portion different positions of cauldron with the abundant and even exchange of heat, so through the indirect heating effect of nitrogen gas, make the reaction raw materials of reation kettle inside be heated more evenly abundant.
As a specific embodiment of the present invention, the scraper 56 is obliquely arranged, and the impact holes 57 are uniformly distributed on the ends of the scraper 56 close to both sides of the kettle 1 along the vertical direction; the parts of the two side end parts of the kettle body 1 corresponding to the impact holes 57 are provided with air grooves 571, and the cross sections of the air grooves 571 are trapezoidal.
When the reactor is in operation, when nitrogen flows out through the impact holes 57, because the gas grooves 571 are arranged at the end parts of the two sides of the kettle 1 corresponding to the impact holes 57, and the cross sections of the gas grooves 571 are trapezoidal, and the cross sections of the gas grooves 571 close to the impact holes 57 are larger than the cross section area of the end surface of the kettle 1, so that the openings of the gas grooves 571 are smaller, the nitrogen is blocked to flow along the gas grooves 571 after flowing out, and then flows out from the openings of the gas grooves 571 to form a transverse strip-shaped nitrogen flow, so that when a reaction raw material attached to the inner wall of the kettle 1 is treated, the uniform strip-shaped nitrogen flow impacts the inner wall, and the impact force on the reaction raw material attached to the inner wall is also inclined along with the inclined impact holes 57 of the scraper 56, so that the reaction raw material attached to the inner wall is subjected to the inclined impact force along the surface of the inner wall, the flow of the reaction raw material is accelerated, and the inner wall of the reactor is further cleaned, the workload of the later-stage manual cleaning reaction kettle is reduced.
As a specific embodiment of the present invention, the crushing hook blocks 531 are uniformly arranged at the opposite positions between the adjacent stirring plates 53 of the same group, and the crushing hook blocks 531 on the adjacent stirring plates 53 are arranged in a staggered manner; the breaking hook block 531 is hollow inside and communicated with the inside of the inflation groove 541; the breaking hook block 531 is bent, cleaning holes 532 are uniformly formed in the bent part of the breaking hook block 531, and the cleaning holes 532 are communicated with the hollow part inside the breaking hook block 531.
In operation, in order to further improve the sufficient crushing of the agglomerates in the reaction raw materials and improve the mixing degree of stirring, the crushing hook blocks 531 are arranged at the opposite positions of the adjacent upper stirring plates 53 in the vertical direction, and the crushing hook blocks 531 on the adjacent stirring plates 53 are staggered with each other and embedded into the gap area, so that when the stirring shaft 52 drives the stirring plates 53 to rotate, the crushing hook blocks 531 in the gaps between the adjacent stirring plates 53 act on the reaction materials in the gap area between the adjacent stirring plates 53 in the vertical direction, and the reaction materials in the kettle body 1 are stirred more sufficiently; according to the above description, because the inclination directions of the adjacent stirring plates 5353 are opposite in the vertical direction, the raw materials flowing vertically under the action of the adjacent stirring plates 5353 intensively flow to the crushing hook blocks 531 positioned in the gaps between the adjacent stirring plates 53 along the surfaces of the stirring plates 5353 and are fully acted by the crushing hook blocks 531, the reaction raw materials with normal particle sizes flow out through the gaps between the crushing hook blocks 531, while the reaction raw materials with large agglomerates cannot pass through the gaps between the crushing hook blocks 531 and are crushed under the impact action when the crushing hook blocks 531 rotate, so that the reaction is fully mixed, and the mixing degree of the reaction raw materials is further improved;
further, in order to reduce the occurrence of a large amount of reaction raw materials in the gaps between the crossing hook pieces 531, the cleaning holes 532 are provided, and when the nitrogen gas is flushed into the gas filling grooves 541, a part of the nitrogen gas flows into the hollow portions of the hook pieces 531 and flows out from the cleaning holes 532 on the curved surfaces of the hook pieces 531, and impacts the reaction raw materials accumulated and adhered on the surfaces of the gaps between the hook pieces 531 and the hook pieces 531 to accelerate the separation thereof, and further breaks and mixes the reaction raw materials under the impact of the gas flow, thereby reducing the occurrence of clogging.
The specific working process is as follows:
when the device works, in the nylon preparation process flow, the reaction kettle is utilized to fully stir and heat the nylon raw material, and whether the full degree of stirring and heating of the reaction raw material can play the role of functional particles more optimally is related in the process, so that the quality of the finally obtained nylon is improved; the heating device of the reaction kettle in the prior art is often arranged on the inner wall part, so that raw materials close to the inner wall part and far from the inner wall part in the reaction kettle are heated unevenly, and the stirring device in the prior art is difficult to accelerate the exchange of the raw materials close to the inner wall part and far from the inner wall part on the one hand, so that the raw materials are fully reacted, and is also difficult to accelerate the mixing degree of the reaction raw materials in the vertical direction and different horizontal heights, so that the problem that the content of components in the reaction raw materials is different at different vertical heights possibly caused by different component densities cannot be solved, and the quality of the obtained nylon is influenced finally;
in order to solve the above mentioned technical problems, the reaction kettle equipment of the present application pours the reaction raw materials into the kettle body 1 through the feeding port 3, and closes the feeding port 3, and then starts the stirring module 5 and the heating module inside the kettle body 1, wherein the heating module can adopt a heating device commonly adopted in the reaction kettle in the prior art, such as a microwave heating device, and the basic structure and the working principle thereof are the same as those in the prior art; when the stirring module 5 is started, firstly, the working motor 51 is started, the output shaft of the working motor 51 is started and drives the stirring shaft 52 to rotate, the stirring plate 53 on the stirring shaft 52 rotates, and the mixing of reaction raw materials in the vertical direction is accelerated while the mixing of the reaction raw materials in the horizontal direction is accelerated; specifically, in order to avoid the influence of components in the air remaining in the kettle body 1 on the reaction raw materials, nitrogen is filled to replace the air, the inflation module 54 is connected with the agitation shaft 52 with a tubular structure, the nitrogen with a certain pressure is input into the agitation shaft 52, the nitrogen flows along a vertical cavity in the agitation shaft 52 and flows into the inflation groove 541 in the agitation plate 53, on one hand, the push rod 55 in the inflation groove 541 in sliding connection is pushed to move, so that the end part of the push rod 55 is close to the inner wall of the kettle body 1, in the process, the reaction raw materials between the end part of the agitation plate 53 and the kettle body 1 in the horizontal direction are effectively agitated, and the exchange of the raw materials close to the inner part of the kettle body 1 and the inner wall part of the kettle body 1 in the principle is driven and accelerated, so that the raw materials are reacted more fully and heated more uniformly; on the other hand, a part of nitrogen flows into the pushing rod 55 through the air hole arranged in the middle of the pushing rod 55, the scraper 56 is hollow, the nitrogen flows in the hollow part in the scraper 56 and flows out through the impact hole 57, the nitrogen is filled in the kettle body 1 to extrude the internal air to be discharged through the air outlet hole in the top of the kettle body 1, and the air replacement effect is realized;
further, in the process, the gas valve at the connecting position of the cavity inside the gas charging groove 541 and the stirring shaft 52 is controlled by an external controller, in the working process, the gas valve in the gas charging groove 541 at the bottom is firstly started, so that nitrogen firstly flows out through the gas charging groove 541 inside the stirring plate 53 at the bottom and the impact hole 57, the nitrogen is filled in the kettle body 1 from bottom to top, the inside of the kettle body 1 is fully discharged by residual air inside the kettle body 1, the exchange of reaction raw materials with different vertical heights is accelerated when the nitrogen flows upwards, the mixing degree of the reaction raw materials is increased, and the quality of finally obtained nylon products is improved.
For example, it is particularly important to avoid the situation that the circumferential surface of the pushing rod 55 drives the reaction raw material to enter the gas charging groove 541 during returning, so as to block the gas charging groove 541, an elastic sleeve bag 590 is disposed at one end of the stirring plate 53 away from the stirring shaft 52, one end of the elastic sleeve bag 590 is mounted at the end of the stirring plate 53 through a rotating member 591, and the other end is connected to the circumferential surface of the scraper 56, so as to wrap the circumferential surface of the pushing rod 55, a gas pressure space 593 is formed in the elastic sleeve bag 590, a gas outlet 551 is disposed on the circumferential surface of the pushing rod 55, the gas outlet 551 communicates the gas hole in the middle of the pushing rod 551 with the gas pressure space 593, and the size of the gas outlet 551 is larger than that of the impact hole 57.
In the process of pushing the pushing rod 55 out, because the size of the air outlet 551 is larger than that of the impact hole 57, the air pressure space 593 air inlet rate in the elastic sleeve 590 is larger than the air outlet rate in the impact hole 57, and the elastic sleeve 590 expands rapidly, so that the increased volume of the elastic sleeve 590 assists in opening the distance between the stirring plate 53 and the scraper 56, and at the moment, the elastic sleeve 590 bulges and has elasticity, so that the pushing rod 55 can be protected from being contaminated by external reaction raw materials, the smoothness of the pushing rod is ensured, and the reaction raw materials are prevented from being introduced into the inflation groove 541. In the process of stirring, when the air pressure is unstable and the stirring plate 56 touches the reaction raw materials at different speeds, the elastic bag 590 can repeatedly change the shape and size, thereby generating certain vibration and expansion reset, vibrating the reaction raw materials on the outer surface thereof, and avoiding the reaction raw materials from being excessively gathered thereon. When the stirring is finished and the stirring is finished, the elastic shrinkage force of the elastic sleeve 590 can be utilized to provide a certain return force to assist the push-out rod 55 to return.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A reaction kettle system for a nylon (PA) preparation process is characterized by comprising a kettle body (1), a support frame (2), a feeding hole (3), a discharging hole (4), a heating module and a stirring module (5); the support frame (2) is installed at the bottom of the kettle body (1), the feed inlet (3) is arranged at the top of the kettle body (1), the discharge outlet (4) is arranged at the middle position of the bottom of the kettle body (1), the heating module is installed on the inner wall of the kettle body (1) and used for heating the interior of the kettle body (1), and the stirring module (5) is used for stirring raw materials in the kettle body (1); the stirring module (5) comprises a working motor (51), a stirring shaft (52), a stirring plate (53) and an air charging module (54), wherein the working motor (51) is arranged at the top of the kettle body (1); the stirring shaft (52) is arranged in the kettle body (1), and the top of the stirring shaft (52) is driven by an output shaft of the working motor (51); the stirring plates (53) are uniformly arranged on the side wall of the stirring shaft (52); the aeration module (54) is connected with the stirring shaft (52) and used for outputting airflow through the stirring shaft (52) to improve the stirring degree.
2. The reaction kettle system for the nylon (PA) preparation process according to claim 1, wherein the stirring module (5) further comprises an air inflation groove (541), a push rod (55), a scraper (56) and an impact hole (57), wherein the air inflation groove (541) is horizontally arranged at a middle position inside the stirring plate (53); the pushing rod (55) is slidably arranged inside the gas charging groove (541), and the end part of the pushing rod (55) extends out of the end part of the stirring plate (53); the scraper (56) is vertically arranged at the end part of the push rod (55); the impact holes (57) are uniformly arranged at the end part of the scraper (56) and communicated with the inside of the inflation groove (541); the stirring shaft (52) is of a tubular structure, and the inner cavity of the stirring shaft (52) is communicated with the inflation groove (541).
3. The reactor system for nylon (PA) production process according to claim 2, wherein: a power box (6) is installed on the inner wall of the top of the kettle body (1), the end part of the stirring shaft (52) and the end part of an output shaft of the working motor (51) both extend into the power box (6) and are mutually staggered, a first gear (521) is arranged at the end part of the stirring shaft (52), a second gear (511) is arranged at the end part of the working motor (51), and the first gear (521) and the second gear (511) are mutually meshed; and the top of the stirring shaft (52) is provided with an air pipe (542) through a rotary joint, and the air pipe (542) is communicated with an external air pump.
4. The reactor system for nylon (PA) preparation process according to claim 3, characterized in that: the stirring plate (53) is obliquely arranged.
5. The reactor system for nylon (PA) preparation process according to claim 4, characterized in that: the stirring plates (53) on the stirring shaft (52) corresponding to the same vertical direction are in a group, the stirring plates (53) in the same group are in an even number, and the inclination directions of the adjacent stirring plates (53) in the vertical direction are opposite.
6. The reactor system for nylon (PA) preparation process according to claim 5, characterized in that: the side wall of the inflation groove (541) is provided with an electric heating wire, and the side wall of the inflation groove (541) is made of aluminum-copper alloy.
7. The reactor system for nylon (PA) production process according to claim 2, wherein: the scraper (56) is obliquely arranged, and the impact holes (57) are uniformly distributed on the end parts, close to the two sides of the kettle body (1), of the scraper (56) along the vertical direction.
8. The reactor system for nylon (PA) production process according to claim 7, wherein: the gas grooves (571) are arranged at the positions, corresponding to the impact holes (57), on the end parts of the two sides of the kettle body (1), and the sections of the gas grooves (571) are trapezoidal.
9. The reactor system for nylon (PA) preparation process according to claim 5, characterized in that: the crushing hook blocks (531) are uniformly arranged at the opposite positions between the adjacent stirring plates (53) in the same group, and the crushing hook blocks (531) on the adjacent stirring plates (53) are arranged in a mutually staggered mode.
10. The reactor system for nylon (PA) manufacturing process according to claim 9, wherein: the crushing hook block (531) is hollow inside and is communicated with the inside of the inflation groove (541); the crushing hook block (531) is bent, cleaning holes (532) are uniformly formed in the bent part of the crushing hook block (531), and the cleaning holes (532) are communicated with the hollow part inside the crushing hook block (531).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210632558.6A CN115007092B (en) | 2022-06-07 | Reaction kettle system for nylon (PA) preparation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210632558.6A CN115007092B (en) | 2022-06-07 | Reaction kettle system for nylon (PA) preparation process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115007092A true CN115007092A (en) | 2022-09-06 |
| CN115007092B CN115007092B (en) | 2024-05-14 |
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| CN116251554A (en) * | 2023-03-20 | 2023-06-13 | 安徽瑞柏新材料有限公司 | Heat recovery's propyl propionate preparation facilities |
| CN117619282A (en) * | 2024-01-26 | 2024-03-01 | 山西福诺欧新材料科技股份有限公司 | Preparation equipment and preparation method of dichloro tetrafluoro ethoxy aniline |
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| CN109351314A (en) * | 2018-12-19 | 2019-02-19 | 宜兴市申生催化剂有限公司 | A kind of novel reaction kettle |
| CN209406330U (en) * | 2018-12-22 | 2019-09-20 | 绍兴震东科技有限公司 | A kind of reaction kettle stirred evenly |
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