CN116371342B - Adipic acid dihydrazide preparation facilities - Google Patents
Adipic acid dihydrazide preparation facilities Download PDFInfo
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- CN116371342B CN116371342B CN202310600935.2A CN202310600935A CN116371342B CN 116371342 B CN116371342 B CN 116371342B CN 202310600935 A CN202310600935 A CN 202310600935A CN 116371342 B CN116371342 B CN 116371342B
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- reaction shell
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- cavity
- fixedly connected
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- IBVAQQYNSHJXBV-UHFFFAOYSA-N adipic acid dihydrazide Chemical compound NNC(=O)CCCCC(=O)NN IBVAQQYNSHJXBV-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims abstract description 150
- 238000001816 cooling Methods 0.000 claims abstract description 63
- 238000009826 distribution Methods 0.000 claims abstract description 14
- 239000013078 crystal Substances 0.000 claims abstract description 10
- 208000002925 dental caries Diseases 0.000 claims abstract description 8
- 238000004140 cleaning Methods 0.000 claims description 48
- 238000003756 stirring Methods 0.000 claims description 28
- 230000007246 mechanism Effects 0.000 claims description 25
- 238000007790 scraping Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 abstract description 45
- 238000002425 crystallisation Methods 0.000 abstract description 20
- 230000008025 crystallization Effects 0.000 abstract description 20
- 239000011259 mixed solution Substances 0.000 abstract description 5
- 239000008187 granular material Substances 0.000 abstract description 3
- 238000012824 chemical production Methods 0.000 abstract description 2
- 230000010405 clearance mechanism Effects 0.000 abstract 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 54
- 235000011037 adipic acid Nutrition 0.000 description 27
- 239000001361 adipic acid Substances 0.000 description 27
- NWZSZGALRFJKBT-KNIFDHDWSA-N (2s)-2,6-diaminohexanoic acid;(2s)-2-hydroxybutanedioic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O.NCCCC[C@H](N)C(O)=O NWZSZGALRFJKBT-KNIFDHDWSA-N 0.000 description 23
- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine monohydrate Substances O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 description 23
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 14
- 230000000694 effects Effects 0.000 description 8
- 239000010865 sewage Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 244000309464 bull Species 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 230000000739 chaotic effect Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 239000000376 reactant Substances 0.000 description 2
- 230000036632 reaction speed Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 229920002385 Sodium hyaluronate Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000006078 metal deactivator Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 229940010747 sodium hyaluronate Drugs 0.000 description 1
- YWIVKILSMZOHHF-QJZPQSOGSA-N sodium;(2s,3s,4s,5r,6r)-6-[(2s,3r,4r,5s,6r)-3-acetamido-2-[(2s,3s,4r,5r,6r)-6-[(2r,3r,4r,5s,6r)-3-acetamido-2,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-2-carboxy-4,5-dihydroxyoxan-3-yl]oxy-5-hydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-3,4,5-trihydroxyoxane-2- Chemical compound [Na+].CC(=O)N[C@H]1[C@H](O)O[C@H](CO)[C@@H](O)[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@H](O[C@H]2[C@@H]([C@@H](O[C@H]3[C@@H]([C@@H](O)[C@H](O)[C@H](O3)C(O)=O)O)[C@H](O)[C@@H](CO)O2)NC(C)=O)[C@@H](C(O)=O)O1 YWIVKILSMZOHHF-QJZPQSOGSA-N 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
- B01J19/20—Stationary reactors having moving elements inside in the form of helices, e.g. screw reactors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0004—Crystallisation cooling by heat exchange
- B01D9/0013—Crystallisation cooling by heat exchange by indirect heat exchange
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/02—Crystallisation from solutions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/087—Cleaning containers, e.g. tanks by methods involving the use of tools, e.g. brushes, scrapers
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C241/00—Preparation of compounds containing chains of nitrogen atoms singly-bound to each other, e.g. hydrazines, triazanes
- C07C241/04—Preparation of hydrazides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D2009/0086—Processes or apparatus therefor
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to the technical field of chemical production, in particular to a adipic acid dihydrazide preparation device. Including the chassis, chassis fixedly connected with reaction shell sets up to two upper and lower cavitys in the reaction shell, and the solenoid valve of circumference distribution is installed to the reaction shell, and the feed inlet of cavity intercommunication about respectively in it is installed to the reaction shell, and the inside of reaction shell is provided with the cooling module that is used for adipic acid dihydrazide cooling crystallization, is provided with the clearance mechanism that is used for striking off adipic acid dihydrazide crystallization in the lower cavity of reaction shell. Through the area of contact of cooling module increase with mixed solution for the rate of cooling crystallization makes mixed liquid form the circulation in the lower cavity of reaction shell to make mixed liquid and first helical blade and the even contact of second helical blade, make the even cooling crystallization of mixed liquid, scrape the crystal granule on the cooling module through clearance mechanism, avoid growing up the grow gradually along with the crystal granule on the cooling module.
Description
Technical Field
The invention relates to the technical field of chemical production, in particular to a adipic acid dihydrazide preparation device.
Background
Adipic acid dihydrazide is used as important chemical products and is widely used as epoxy powder paint curing agent, paint assistant, metal deactivator and other polymer assistants, water treating agent, sodium hyaluronate cross-linked to form protein medicine carrier, etc. and is produced through cooling crystallization after reaction of adipic acid and hydrazine hydrate.
In the preparation process of the prior adipic dihydrazide, particularly in the process of cooling crystallization, local crystal aggregation accumulation caused by different cooling crystallization degrees of mixed liquid generally exists, so that the adipic dihydrazide forms a large block, is adhered to a cooling device, influences the normal operation of heat exchange, reduces the preparation rate, has large crystal morphology difference of aggregation accumulation, and is unfavorable for subsequent processing.
Disclosure of Invention
The invention provides a adipic acid dihydrazide preparation device, which aims to overcome the defects that crystals cooled during the preparation of adipic acid dihydrazide are adhered to a cooling device to influence the normal operation of heat exchange, and the generated crystals have large morphology difference and are unfavorable for subsequent processing.
The technical scheme of the invention is as follows: the utility model provides an adipic acid dihydrazide preparation facilities, including the chassis, chassis fixedly connected with reaction shell, be provided with two upper and lower cavitys in the reaction shell, two upper and lower cavitys are through the solenoid valve intercommunication of circumference distribution, the bottom of reaction shell is provided with the cold wind passageway of circumference distribution, the heating element is installed on the upper portion in the reaction shell outside, the feed inlet rather than the upper and lower cavity intercommunication in respectively is installed to the reaction shell, the discharge gate of symmetric distribution is installed to the bottom of reaction shell, the lower cavity intercommunication of discharge gate and reaction shell, driving motor is installed to the chassis, the chassis is provided with the cold wind mechanism that is used for reducing reaction shell lower chamber temperature, cold wind mechanism is including cold wind case, cold wind case installs in the left side of chassis, one side fixedly connected with cold wind shell that the reaction shell is close to cold wind case, through the pipeline intercommunication between cold wind case, the bottom rotation of reaction shell is connected with the second casing, cold wind shell and second casing pass through cold wind passageway intercommunication, the second casing rotates and is connected with first casing, form the cavity between first casing and the second casing, the inside of reaction shell is provided with the cooling assembly who is used for adipic acid dihydrazide cooling crystallization, the cooling arrangement who strikes off the reaction shell is provided with the adipic acid dihydrazide in the cavity that is used for cleaning up in the reaction shell.
Further, the cooling assembly comprises a rotating shaft, the rotating shaft is fixedly connected to an output shaft of the driving motor, the rotating shaft is fixedly connected with a first shell, the first shell is fixedly connected with first helical blades which are uniformly distributed, the rotating shaft is fixedly connected with adjacent first helical blades, the second shell is fixedly connected with second helical blades which are uniformly distributed, the reaction shell is slidably connected with the adjacent second helical blades, the second shell is fixedly connected with a straight ring gear, one end of the rotating shaft, which is close to the driving motor, is fixedly connected with a first gear, the bottom of the reaction shell is rotationally connected with a second gear, the second gear is respectively meshed with the first gear and the straight ring gear, the first helical blades are provided with first cold air cavities which are uniformly distributed, the first cold air cavities are communicated with the first shell, the second helical blades are provided with second cold air cavities which are uniformly distributed, and the second cold air cavities are communicated with the second shell.
Further, the rotation direction and the screw pitch of the first spiral blade and the second spiral blade are the same, and the adjacent side surfaces of the first spiral blade and the second spiral blade are attached.
Further, the cleaning mechanism comprises a first guide rod, the first guide rod is fixedly connected in the lower cavity of the reaction shell, a second guide rod is fixedly connected in the lower cavity of the reaction shell, a first spiral through groove is formed between adjacent first spiral blades, a second spiral through groove is formed between adjacent second spiral blades, the first guide rod and the second guide rod are respectively located in the first spiral through groove and the second spiral through groove, the first guide rod is connected with a first cleaning piece in a sliding mode, the second guide rod is connected with a second cleaning piece in a sliding mode, and the first cleaning piece and the second cleaning piece are respectively attached to the first spiral blades and the second spiral blades.
Further, the middle parts of the first cleaning piece and the second cleaning piece are respectively provided with a cleaning piece through hole.
Further, still including the rabbling mechanism that is used for mixing the raw materials, rabbling mechanism sets up in the pivot, rabbling mechanism is including the bull stick of symmetric distribution, the bull stick rotates and connects in the upper portion of pivot, the one end fixedly connected with third gear of pivot is kept away from to the bull stick, reaction shell fixedly connected with and third gear engagement's awl ring gear, bull stick fixedly connected with evenly distributed's stirring piece, reaction shell fixedly connected with evenly distributed's detouring board, detouring board and stirring piece are crisscross each other, reaction shell sliding connection has the baffle, baffle and bull stick rotate to be connected.
Further, the baffle fixedly connected with symmetric distribution's scraper blade, scraper blade and the laminating of the inner wall of reaction shell for strike off the raw and other materials of adhesion on the cavity inner wall on the reaction shell.
Further, adjacent sides of the stirring piece, the flow-around plate and the scraping plate are all arranged in a zigzag manner, the zigzag is mutually staggered, and the stirring piece, the flow-around plate and the scraping plate are all provided with zigzag through holes similar to the zigzag edges.
Further, the pivot is provided with and gathers the air cavity, and the pivot rotates to be connected with and gathers the gas shell, gathers gas shell and reaction shell fixed connection, gathers the lower cavity intercommunication of gas shell and reaction shell and has the intermediate channel, gathers gas shell and gathers the air cavity intercommunication, and the top of reaction shell is provided with the gas chamber that divides, divides the air cavity and gathers the air cavity intercommunication, and the top of reaction shell is provided with the drainage chamber of circumference distribution, and the drainage chamber of circumference distribution all communicates with the gas chamber that divides.
Further, the top of reaction shell is provided with spiral cavity, and spiral cavity and adjacent drainage chamber intercommunication.
The beneficial effects are that: the contact area between the first spiral blade and the mixed solution is increased through the first spiral blade and the second spiral blade, so that the heat exchange efficiency of the first spiral blade and the second spiral blade is improved, and the cooling crystallization rate is further increased; the first helical blade and the second helical blade are matched to enable mixed liquid to circulate in the lower cavity of the reaction shell, so that the mixed liquid is uniformly contacted with the first helical blade and the second helical blade, the mixed liquid is uniformly refrigerated, the mixed liquid is uniformly cooled and crystallized, different crystallization degrees caused by different cooling degrees of the mixed liquid are prevented, and further the subsequent discharge of adipic acid dihydrazide is facilitated; the first helical blade and the second helical blade relatively move through the gap between the first helical blade and the second helical blade when relatively rotating, so that the chaotic degree of the mixed liquid is further increased, the cooled and crystallized adipic dihydrazide is more uniform, the subsequent discharge is facilitated, and the product quality is improved; through the up-and-down movement of first clearance piece and second clearance piece, scrape the adipic acid dihydrazide granule of crystallization on first helical blade and the second helical blade face, avoid growing adipic acid dihydrazide crystallization on first helical blade and the second helical blade face along with the time and pile up gradually, still increase simultaneously to the chaotic degree of mixed liquid in the circulation process, make adipic acid dihydrazide solute distribution in the mixed liquid more even, improve cooling crystallization's efficiency and effect.
Drawings
Fig. 1 is a schematic overall perspective view of the present invention.
Fig. 2 is a cross-sectional view of the overall three-dimensional structure of the present invention.
FIG. 3 is a perspective view of the reaction shell, first helical blade, second helical blade, etc. of the present invention.
FIG. 4 is a schematic diagram of the three-dimensional structure of the reaction shell and the rotating shaft of the present invention.
Fig. 5 is an exploded view of a three-dimensional structure of the cleaning mechanism of the present invention.
Fig. 6 is a schematic perspective view of the stirring mechanism of the present invention.
Fig. 7 is a schematic perspective view of parts such as a rotating rod and a third gear.
In the reference numerals: the device comprises a 1-underframe, a 21-reaction shell, a 22-electromagnetic valve, a 23-cold air channel, a 24-heating element, a 3-feeding opening, a 4-discharging opening, a 5-driving motor, a 6-cold air mechanism, a 61-cold air box, a 62-cold air shell, a 63-first shell, a 64-second shell, a 7-cooling assembly, a 71-rotating shaft, a 72-first helical blade, a 73-second helical blade, a 74-straight gear, a 75-first gear, a 76-second gear, a 77-first cold air cavity, a 78-second cold air cavity, a 8-cleaning mechanism, a 81-first guide rod, a 82-second guide rod, a 83-first helical through groove, a 84-first cleaning element, a 85-second helical through groove, a 86-second cleaning element, a 9-stirring mechanism, a 91-rotating rod, a 92-third gear, a 93-conical gear, a 94-stirring element, a 95-flow-winding plate, a 96-baffle, a 97-scraper, a 98-converging cavity, a 99-converging shell, a 910-intermediate channel, a 101-diversion cavity, a 103-diversion cavity and a 102-helical cavity.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments, based on which all other embodiments, which a person having ordinary skill in the art may obtain without inventive effort, belong to the scope of protection of the present invention, although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principle and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Example 1: 1-5, including chassis 1, the upside fixedly connected with reaction shell 21 of chassis 1, be provided with two upper and lower cavitys in the reaction shell 21, four solenoid valves 22 that the circumference distributes are installed to the reaction shell 21, two upper and lower cavitys are through four solenoid valves 22 intercommunication that the circumference distributes, the bottom of reaction shell 21 is provided with the cold wind passageway 23 that the circumference distributes, the upper portion fixed mounting in the reaction shell 21 outside has the heating element 24 that is used for heating adipic acid and hydrazine hydrate, reaction shell 21 fixedly connected with three feed inlet 3, three feed inlet 3 are located the left and right sides at reaction shell 21 upper cavity top and the right side at lower cavity top respectively, the upper and lower cavity of reaction shell 21 communicates with feed inlet 3 and its top left and right sides feed inlet 3 at middle part right side respectively, the bottom fixedly connected with two discharge gates 4 of reaction shell 21 of symmetry distributes, chassis 1 is provided with driving motor 5 in fixed mounting, chassis 1 is provided with the mechanism that is used for reducing the reaction shell 21 temperature and is used for heating adipic acid and hydrazine, the chassis 1 is provided with cooling box 62 and is connected with the second cooling box 64 through the first side of cooling box 61 and cooling box 64, the cooling box 64 is connected with the second side of cooling box 61 through cooling box 64, the cooling box 64 is connected with the second side of cooling box 64 through cooling box 61, the cooling box 64 is connected with the second side of cooling box 64, the cooling box 64 is connected with the cooling box 64 through the side of cooling box 64, the cooling box 64 is connected with the cooling box 64, the inside of cooling box 64 is connected with the cooling box 64, a cleaning mechanism 8 for scraping adipic acid dihydrazide crystals is arranged in the lower cavity of the reaction shell 21.
As shown in fig. 2-5, the cooling assembly 7 includes a rotating shaft 71, the rotating shaft 71 is fixedly connected to an output shaft of the driving motor 5, the rotating shaft 71 is fixedly connected to the first casing 63, the first casing 63 is fixedly connected with two first spiral blades 72 uniformly distributed, the rotating shaft 71 is fixedly connected to the adjacent first spiral blades 72, the second casing 64 is fixedly connected with two second spiral blades 73 uniformly distributed, the reaction shell 21 is slidably connected to the adjacent second spiral blades 73, the rotating second spiral blades 73 scratch adipic acid dihydrazide crystals adhered to the inner wall of the lower cavity of the reaction shell 21, so as to facilitate subsequent collection, the rotation direction and the screw pitch of the first spiral blades 72 and the second spiral blades 73 are the same, the adjacent side surfaces of the first spiral blades 72 and the second spiral blades 73 are attached, and through spiral spaces formed between the first spiral blades 72 and the second spiral blades 73 and between the two spiral blades and the inner wall of the lower cavity of the reaction shell 21, the contact area between the mixed liquid and the first spiral blade 72 and the contact area between the mixed liquid and the second spiral blade 73 are increased, the cooling crystallization efficiency is further improved, the second shell 64 is fixedly connected with the straight toothed ring 74, the lower end of the rotating shaft 71 is fixedly connected with the first gear 75, the bottom of the reaction shell 21 is rotationally connected with the second gear 76, the second gear 76 is respectively meshed with the first gear 75 and the straight toothed ring 74, the first spiral blade 72 and the second spiral blade 73 are utilized to relatively rotate reversely, the mixed liquid circularly flows in the lower cavity of the reaction shell 21, the uniformity of the mixed liquid is improved, the cooling crystallization effect is improved, the first spiral blade 72 is provided with two first cold air cavities 77 which are uniformly distributed, the two first cold air cavities 77 are communicated with the first shell 63, the second spiral blade 73 is provided with two second cold air cavities 78 which are uniformly distributed, the two second cold air chambers 78 are both communicated with the second casing 64, a gap exists between the upper ends of the first spiral vane 72 and the second spiral vane 73 and the upper wall of the lower cavity of the reaction shell 21, and the upper ends of the first spiral vane 72 and the second spiral vane 73 are located above the mixed liquid, namely the upper ends of the first cold air chamber 77 and the second cold air chamber 78 are located above the mixed liquid, so that the mixed liquid is prevented from entering the first cold air chamber 77 and the second cold air chamber 78, and the preparation effect is improved.
As shown in fig. 3-5, the cleaning mechanism 8 includes a first guide rod 81, the first guide rod 81 is fixedly connected to the upper side of the lower cavity of the reaction shell 21, the second guide rod 82 is fixedly connected to the upper side of the lower cavity of the reaction shell 21, a first spiral through groove 83 is formed between two first spiral blades 72, a second spiral through groove 85 is formed between two second spiral blades 73, the first guide rod 81 and the second guide rod 82 are respectively located in the first spiral through groove 83 and the second spiral through groove 85, the first guide rod 81 is slidably connected with a first cleaning member 84, the second guide rod 82 is slidably connected with a second cleaning member 86, cleaning member through holes are respectively formed in the middle of the first cleaning member 84 and the second cleaning member 86, resistance when mixed liquid passes through is reduced, cooling effect when circulation is improved, the first cleaning member 84 and the second cleaning member 86 are respectively attached to adjacent sides of the first spiral blades 72 and the second spiral blades 73, the adjacent sides of the first spiral blades 72 and the second spiral blades 73 are prevented from being attached to each other by moving up and down, the first cleaning member 84 and the second cleaning member 86 are prevented from affecting the next cooling effect of the adjacent sides of the first spiral blades 72 and the second spiral blades 73, and the second cleaning member 84 are respectively attached to the adjacent sides of the second spiral blades 73.
When the device is needed to prepare adipic acid dihydrazide, a worker starts the heating piece 24 firstly, the heating piece 24 starts to heat the upper cavity of the reaction shell 21, after the temperature of the upper cavity of the reaction shell 21 rises to 80 ℃ to 100 ℃, the worker adds adipic acid and hydrazine hydrate into the upper cavity of the reaction shell 21 from the feed inlets 3 at two sides of the upper part of the reaction shell 21 respectively, the mixed adipic acid and hydrazine hydrate start to react, after the reaction is finished, the worker opens the four electromagnetic valves 22, so that the reacted mixed liquid flows from the upper cavity of the reaction shell 21 to the lower cavity of the reaction shell 21 for cooling crystallization, then the worker closes the heating piece 24 and starts the driving motor 5 and the cold air box 61, the cold air box 61 starts to blow cold air into the cold air shell 62, the cold air enters the cavity between the first shell 63 and the second shell 64 after passing through the cold air channel 23, then the cold air enters the adjacent first cold air cavity 77 and the second cold air cavity 78 respectively, the cold air 72 and the second spiral blades 73 are gradually cooled, the mixed liquid in the lower cavity of the reaction shell 21 flows to the lower cavity of the reaction shell 21 to the lower cavity, the mixed liquid of adipic acid and the second spiral blade is cooled, the cooling rate of the mixed liquid is increased, the cooling rate of the adipic acid and the second hydrazide is increased, and the cooling rate of the mixed liquid in the cooling solution is increased, and the cooling rate of the cooling solution is further cooled by the cooling solution is increased, and the cooling rate of the cooling solution is cooled by the spiral blade is cooled by the cooling solution.
In the cold air movement process, the output shaft of the driving motor 5 starts to drive the rotating shaft 71 to rotate anticlockwise, the rotating shaft 71 drives the first shell 63, the first helical blade 72 and the first gear 75 to rotate anticlockwise, the first gear 75 transmits power to the straight gear 74 after being transmitted by the second gear 76, the straight gear 74 starts to rotate clockwise, the straight gear 74 drives the second shell 64 and parts thereon to rotate clockwise, the anticlockwise rotating first helical blade 72 drives the mixed liquid in the middle part in the lower cavity of the reaction shell 21 to move upwards, the clockwise rotating second helical blade 73 drives the mixed liquid around in the lower cavity of the reaction shell 21 to move downwards, the mixed liquid forms circulation in the lower cavity of the reaction shell 21, the mixed liquid is uniformly contacted with the first helical blade 72 and the second helical blade 73, the mixed liquid is uniformly refrigerated, and further, adipic acid dihydrazide solute in the mixed liquid is uniformly cooled and crystallized, the difference of crystallization degrees caused by different cooling degrees of the mixed liquid is prevented, so that a clot is generated, the subsequent discharge of adipic acid dihydrazide is not facilitated, in the process of the mixed liquid circulation, part of the mixed liquid is relatively moved through a gap between the first spiral blade 72 and the second spiral blade 73 when the mixed liquid relatively rotates, the chaotic degree of the mixed liquid is further increased, the adipic acid dihydrazide solute in the mixed solution is more uniformly distributed, the mixed solution is uniformly subjected to heat exchange, the cooled and crystallized adipic acid dihydrazide is more uniformly in the mixed solution, the subsequent discharge is facilitated, the product quality is improved, meanwhile, the rotating second spiral blade 73 scrapes the adipic acid dihydrazide adhered to the inner wall of the lower cavity of the reaction shell 21, after the preparation is avoided, the adipic acid dihydrazide is adhered to the inner wall of the lower cavity of the reaction shell 21, so that the adipic acid dihydrazide is difficult to take out.
When the first spiral blade 72 and the second spiral blade 73 rotate, the first spiral blade 72 and the second spiral blade 73 respectively press the first cleaning piece 84 and the second cleaning piece 86, and due to the limit of the first guide rod 81 and the second guide rod 82, the first cleaning piece 84 and the second cleaning piece 86 start to move upwards and downwards along the first guide rod 81 and the second guide rod 82 respectively, in the process, the first cleaning piece 84 and the second cleaning piece 86 scratch the adjacent first spiral blade 72 and second spiral blade 73, adipic acid dihydrazide particles crystallized on the first spiral blade 72 and the second spiral blade 73 are scraped off, adipic acid dihydrazide crystals on the surfaces of the first spiral blade 72 and the second spiral blade 73 are prevented from gradually accumulating along with time, so that the heat exchange efficiency between the first spiral blade 72 and the second spiral blade 73 and mixed liquid is affected, and the crystallization rate is reduced.
When the first cleaning member 84 and the second cleaning member 86 move to the upper side and the lower side in the lower cavity of the reaction housing 21 respectively, the output shaft of the driving motor 5 is reversed, so that the first cleaning member 84 and the second cleaning member 86 start to move downwards and upwards respectively, the adjacent first spiral blade 72 and second spiral blade 73 are scraped again, the heat exchange efficiency between the first spiral blade 72 and the second spiral blade 73 and the mixed liquid is ensured, the first cleaning member 84 and the second cleaning member 86 move up and down in a reciprocating manner, the adjacent first spiral blade 72 and the adjacent second spiral blade 73 are continuously scraped, and the degree of confusion of the mixed liquid is further increased on the premise of ensuring the heat exchange efficiency between the first spiral blade 72 and the second spiral blade 73 and the mixed liquid, so that the mixed liquid is uniformly contacted with the first spiral blade 72 and the second spiral blade 73, and the cooling crystallization efficiency and the cooling effect are improved.
After crystallization is completed, a worker opens the discharge port 4 on the left side of the bottom of the reaction shell 21, ethanol is added into the reaction shell through the feed port 3 on the right side of the middle of the reaction shell 21, adipic acid left in mixed liquid is dissolved in the ethanol, then the liquid is discharged from the discharge port 4 on the left side of the bottom of the reaction shell 21, the rest in the lower cavity of the reaction shell 21 is adipic acid dihydrazide particles, then the worker closes the discharge port 4 on the left side of the bottom of the reaction shell 21 and opens the discharge port 4 on the right side of the bottom of the reaction shell 21, adipic acid dihydrazide particles are discharged, after preparation is completed, the worker closes the driving motor 5 and the cold air mechanism 6, then cleaning liquid is poured into the reaction shell 21 for cleaning, and after the device is cleaned, sewage is discharged.
Example 2: on the basis of embodiment 1, as shown in fig. 3, 6 and 7, the stirring mechanism 9 for mixing raw materials is further included, the stirring mechanism 9 is disposed on the rotating shaft 71, the stirring mechanism 9 includes two rotating rods 91 symmetrically distributed, the two rotating rods 91 are all rotationally connected to the upper portion of the rotating shaft 71, the opposite ends of the symmetrical rotating rods 91 are all fixedly connected with a third gear 92, the reaction shell 21 is fixedly connected with a bevel ring 93 meshed with the third gear 92, the rotating rods 91 are fixedly connected with stirring members 94 uniformly distributed at equal intervals, the mixing degree of adipic acid and hydrazine hydrate is increased by using the rotating stirring members 94, so that the contact area between the adipic acid and the hydrazine hydrate is increased, the reaction speed of the adipic acid and the hydrazine hydrate is increased, the reaction shell 21 is fixedly connected with a flow-around plate 95 uniformly distributed at equal intervals, the flow-around plate 95 is staggered with the stirring members 94, the adipic acid and the hydrazine hydrate are further disturbed by shearing force generated between the stirring members 94 and the flow-around plate 95, the contact area between the adipic acid and the hydrazine hydrate is further increased, the reaction speed is increased, the reaction shell 21 is slidingly connected with the baffles 96, 96 and 96 are rotationally connected with the rotating rods 91, the baffles 96 are used for blocking the adipic acid and the hydrazine hydrate, and the bevel ring 92 and the bevel ring 93 are prevented from contacting with the third gear 93 and the bevel ring 93.
As shown in fig. 6 and 7, the baffle 96 is fixedly connected with symmetrically distributed scrapers 97, the scrapers 97 are attached to the inner wall of the reaction shell 21 and are used for scraping raw materials adhered to the inner wall of the upper cavity of the reaction shell 21, adipic acid is prevented from being attached to the inner wall of the upper cavity of the reaction shell 21, the quantity of adipic acid contacted with hydrazine hydrate is reduced, the reaction rate is reduced, adjacent sides of the stirring piece 94, the flow-around plate 95 and the scrapers 97 are all set to be in a saw-tooth shape, the saw-teeth are staggered, and the stirring piece 94, the flow-around plate 95 and the scrapers 97 are all provided with saw-tooth through holes similar to the saw-tooth edges of the saw-tooth through holes, so that the contact area between the adipic acid and the hydrazine hydrate is increased, and the reaction rate is further increased.
As shown in fig. 6, the rotating shaft 71 is provided with a gas collecting cavity 98, the rotating shaft 71 is rotationally connected with a gas collecting shell 99, the gas collecting shell 99 is fixedly connected with the reaction shell 21, the gas collecting shell 99 is communicated with a lower cavity of the reaction shell 21, a middle channel 910 is formed, the gas collecting shell 99 is communicated with the gas collecting cavity 98, a gas distributing cavity 101 is arranged at the top of the reaction shell 21, the gas distributing cavity 101 is communicated with the gas collecting cavity 98, a circumferentially distributed drainage cavity 102 is arranged at the top of the reaction shell 21, the upper side of the reaction shell 21 is cooled and cooled by utilizing the cold air flowing in the drainage cavity 102, thereby cooling and condensing the hydrazine hydrate vapor in the upper cavity of the reaction shell 21, enabling the hydrazine hydrate separated from the reaction area in a gaseous form to participate in the reaction again, ensuring the proportion of raw materials in the upper cavity of the reaction shell 21, avoiding the reduction of the reaction rate due to the change of the proportion of reactants, the circumferentially distributed drainage cavity 102 is communicated with the gas distributing cavity 101, the top of the reaction shell 21 is provided with a spiral cavity 103, the spiral cavity 103 is communicated with the adjacent drainage cavity 102, thereby increasing the contact area between the cold air and the upper side of the reaction shell 21, the cold air is cooled and the upper side of the reaction shell 21, the hydrazine hydrate vapor is cooled and condensed uniformly, the reaction effect is increased, and the reaction efficiency is improved.
After the staff puts adipic acid and hydrazine hydrate into the upper cavity of the reaction shell 21, the staff starts the driving motor 5 and the cold air box 61, the output shaft of the driving motor 5 drives the rotating shaft 71 to start rotating, the rotating shaft 71 drives the rotating rod 91 and upper parts thereof to rotate together, the third gear 92 starts to roll along the bevel gear 93, meanwhile, the third gear 92 starts to rotate, the third gear 92 drives the rotating rod 91 and upper parts thereof to rotate together, the rotating stirring piece 94 starts to stir the adipic acid and the hydrazine hydrate, the contact area between the adipic acid and the hydrazine hydrate is increased, the reaction rate of the adipic acid and the hydrazine hydrate is further improved, in the process, when the stirring piece 94 passes through the adjacent bypass plate 95, the adipic acid and the hydrazine hydrate are sheared, the mixing degree of the adipic acid and the hydrazine hydrate is further increased, the reaction rate is accelerated, the baffle 96 cuts off the adipic acid and the hydrazine hydrate, the stirring liquid is prevented from contacting the third gear 92 and the bevel gear 93, and the bevel gear 93 are corroded, and the service life of the adipic acid and the hydrazine is shortened.
The inner wall of the upper cavity of the reaction shell 21 is scratched by the two scraping plates 97 which are symmetrically distributed through the baffle plate 96 which rotates, adipic acid is prevented from being adhered to the inner wall of the upper cavity of the reaction shell 21, the concentration of the reaction materials is reduced, and accordingly the reaction rate is reduced, in the reaction process, cold air enters the gas collecting shell 99 from the lower cavity of the reaction shell 21 through the middle channel 910, then enters the gas collecting cavity 98, finally enters the plurality of circumferentially distributed drainage cavities 102 through the gas distribution cavity 101, so that the upper side of the reaction shell 21 is cooled, hydrazine steam in the upper cavity of the reaction shell 21 is cooled and condensed, hydrazine hydrate which is separated from a reaction area in a gaseous form is reacted again, the proportion of raw materials in the upper cavity of the reaction shell 21 is guaranteed, the reduction of the reaction rate caused by the change of the proportion of reactants is avoided, the contact area between cold air and the upper side of the reaction shell 21 and the cold air between the drainage cavity 102 and the spiral cavity 103 is increased through the mutual flow of the spiral cavity 103, the uniformity of the cold air distribution is increased, the cooling and condensing effect of the hydrazine steam in the upper cavity 21 is improved, and further, after the reaction is completed, the adipic acid diacyl motor is completely cooled, the hydrazine steam in the upper cavity 21 is cooled and the upper cavity is cooled, the reaction is further cooled, the hydrazine steam in the reaction is completely, the upper and the hydrazine is discharged into the reaction device after the reaction device is driven, and the sewage is cleaned, and the sewage is completely washed, and the sewage is washed after the sewage is pumped down by the sewage is pumped by the sewage is driven by a machine, and after the sewage is pumped.
The foregoing is merely exemplary of the present invention and is not intended to limit the present invention. All equivalents and alternatives falling within the spirit of the invention are intended to be included within the scope of the invention. What is not elaborated on the invention belongs to the prior art which is known to the person skilled in the art.
Claims (5)
1. An adipic acid dihydrazide preparation facilities, its characterized in that: including chassis (1), chassis (1) fixedly connected with reaction shell (21), be provided with two upper and lower cavitys in reaction shell (21), solenoid valve (22) of circumference distribution are installed in reaction shell (21), upper and lower two cavitys are through circumference distribution's solenoid valve (22) intercommunication, the bottom of reaction shell (21) is provided with circumference distribution's cold wind passageway (23), heating element (24) are installed on the upper portion in reaction shell (21) outside, feed inlet (3) rather than interior upper and lower cavitys intercommunication respectively are installed in reaction shell (21), symmetrically distributed discharge gate (4) are installed to the bottom of reaction shell (21), discharge gate (4) and reaction shell (21)'s lower cavity intercommunication, driving motor (5) are installed in chassis (1), chassis (1) are provided with cold wind mechanism (6) that are used for reducing reaction shell (21) lower cavity internal temperature, cold wind mechanism (6) are including cold wind case (61), cold wind case (61) are installed in the left side of chassis (1), one side that reaction shell (21) is close to wind case (61) is fixed connection has shell (62) and is connected with cold wind case (64) between cold wind rotation shell (21) and second rotation shell (64), the cold air shell (62) is communicated with the second shell (64) through a cold air channel (23), the second shell (64) is rotationally connected with the first shell (63), a cavity is formed between the first shell (63) and the second shell (64), a cooling component (7) for cooling and crystallizing adipic acid dihydrazide is arranged in the reaction shell (21), and a cleaning mechanism (8) for scraping adipic acid dihydrazide crystals is arranged in a lower cavity of the reaction shell (21); the cooling assembly (7) comprises a rotating shaft (71), the rotating shaft (71) is fixedly connected to an output shaft of the driving motor (5), the rotating shaft (71) is fixedly connected with the first shell (63), the first shell (63) is fixedly connected with first spiral blades (72) which are uniformly distributed, the rotating shaft (71) is fixedly connected with adjacent first spiral blades (72), the second shell (64) is fixedly connected with second spiral blades (73) which are uniformly distributed, the reaction shell (21) is in sliding connection with the adjacent second spiral blades (73), the second shell (64) is fixedly connected with a straight-tooth ring (74), one end, close to the driving motor (5), of the rotating shaft (71) is fixedly connected with a first gear (75), the bottom of the reaction shell (21) is rotatably connected with a second gear (76), the second gear (76) is meshed with the first gear (75) and the straight-tooth ring (74), the first spiral blades (72) are provided with first uniformly distributed cold air cavities (77), the first cold air cavities (77) are communicated with the first shell (63), the second spiral blades (73) are provided with second uniformly distributed second cold air cavities (78), and the second cold air cavities (78) are communicated with the second cold air cavities (64); the cleaning mechanism (8) comprises a first guide rod (81), the first guide rod (81) is fixedly connected in a lower cavity of the reaction shell (21), a second guide rod (82) is fixedly connected in the lower cavity of the reaction shell (21), a first spiral through groove (83) is formed between adjacent first spiral blades (72), a second spiral through groove (85) is formed between adjacent second spiral blades (73), the first guide rod (81) and the second guide rod (82) are respectively positioned in the first spiral through groove (83) and the second spiral through groove (85), the first guide rod (81) is connected with a first cleaning piece (84) in a sliding manner, the second guide rod (82) is connected with a second cleaning piece (86) in a sliding manner, and the first cleaning piece (84) and the second cleaning piece (86) are respectively attached to the first spiral blades (72) and the second spiral blades (73); the stirring device is characterized by further comprising a stirring mechanism (9) for mixing raw materials, the stirring mechanism (9) is arranged on the rotating shaft (71), the stirring mechanism (9) comprises rotating rods (91) which are symmetrically distributed, the rotating rods (91) are rotationally connected to the upper part of the rotating shaft (71), one end, far away from the rotating shaft (71), of each rotating rod (91) is fixedly connected with a third gear (92), a reaction shell (21) is fixedly connected with a bevel ring (93) meshed with the third gear (92), stirring pieces (94) which are uniformly distributed are fixedly connected with the rotating rods (91), a uniformly distributed flow-around plate (95) is fixedly connected with the reaction shell (21), the flow-around plate (95) and the stirring pieces (94) are mutually staggered, a baffle (96) is rotationally connected with the reaction shell (21), and the baffle (96) is rotationally connected with the rotating rods (91); the baffle plate (96) is fixedly connected with symmetrically-distributed scraping plates (97), and the scraping plates (97) are attached to the inner wall of the reaction shell (21) and are used for scraping raw materials adhered to the inner wall of the upper cavity of the reaction shell (21); the adjacent sides of the stirring piece (94) and the flow-around plate (95) and the scraping plate (97) are all in a zigzag shape, the zigzag teeth are staggered, and the stirring piece (94), the flow-around plate (95) and the scraping plate (97) are all provided with zigzag through holes similar to the zigzag edges.
2. An adipic acid dihydrazide preparation device according to claim 1, wherein: the first helical blade (72) and the second helical blade (73) have the same rotation direction and pitch, and the first helical blade (72) is attached to the adjacent side surface of the second helical blade (73).
3. An adipic acid dihydrazide preparation device according to claim 1, wherein: the middle parts of the first cleaning piece (84) and the second cleaning piece (86) are respectively provided with a cleaning piece through hole.
4. An adipic acid dihydrazide preparation device according to claim 1, wherein: the rotating shaft (71) is provided with a gas collecting cavity (98), the rotating shaft (71) is rotationally connected with a gas collecting shell (99), the gas collecting shell (99) is fixedly connected with a reaction shell (21), a middle channel (910) is communicated with the lower cavity of the reaction shell (21), the gas collecting shell (99) is communicated with the gas collecting cavity (98), the top of the reaction shell (21) is provided with a gas distributing cavity (101), the gas distributing cavity (101) is communicated with the gas collecting cavity (98), the top of the reaction shell (21) is provided with circumferentially distributed drainage cavities (102), and the circumferentially distributed drainage cavities (102) are all communicated with the gas distributing cavity (101).
5. An adipic acid dihydrazide preparation device as claimed in claim 4, wherein: the top of reaction shell (21) is provided with spiral cavity (103), and spiral cavity (103) are communicated with adjacent drainage chamber (102).
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| CN202310600935.2A CN116371342B (en) | 2023-05-26 | 2023-05-26 | Adipic acid dihydrazide preparation facilities |
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| CN202310600935.2A CN116371342B (en) | 2023-05-26 | 2023-05-26 | Adipic acid dihydrazide preparation facilities |
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| CN116371342B true CN116371342B (en) | 2023-08-22 |
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| JP2007332220A (en) * | 2006-06-13 | 2007-12-27 | Toshiba Corp | Pyrolytic treatment apparatus |
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| CN211246417U (en) * | 2019-10-30 | 2020-08-14 | 沧州市东众特种合金制造有限公司 | Stirring nature additive unloader |
| CN113731339A (en) * | 2021-11-08 | 2021-12-03 | 东营威联化学有限公司 | P-xylene oxidation crystallization device |
| CN115055097A (en) * | 2022-08-12 | 2022-09-16 | 南通太洋高新材料科技有限公司 | Lithium fluoride apparatus for producing |
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2023
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2007332220A (en) * | 2006-06-13 | 2007-12-27 | Toshiba Corp | Pyrolytic treatment apparatus |
| CN204380586U (en) * | 2015-01-14 | 2015-06-10 | 济宁森立生物科技有限公司 | A kind of high-efficiency stirring formula synthesis tank |
| CN206778320U (en) * | 2017-03-31 | 2017-12-22 | 云南鹏程农牧科技发展集团有限公司 | Chicken farm high-efficiency feed agitating device |
| CN211246417U (en) * | 2019-10-30 | 2020-08-14 | 沧州市东众特种合金制造有限公司 | Stirring nature additive unloader |
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| CN116371342A (en) | 2023-07-04 |
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