CN115300930A - Acetoacetanilide rapid crystallization equipment and crystallization process - Google Patents
Acetoacetanilide rapid crystallization equipment and crystallization process Download PDFInfo
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- CN115300930A CN115300930A CN202211225737.4A CN202211225737A CN115300930A CN 115300930 A CN115300930 A CN 115300930A CN 202211225737 A CN202211225737 A CN 202211225737A CN 115300930 A CN115300930 A CN 115300930A
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/02—Crystallisation from solutions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D2009/0086—Processes or apparatus therefor
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- Crystallography & Structural Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to the technical field of chemical equipment, and discloses rapid acetanilide crystallization equipment and a crystallization process, wherein the equipment comprises the following steps: the top of the outer wall of the shell is circumferentially provided with a plurality of air grooves communicated with the inner cavity of the shell; the aluminum plate is arranged at the top end of the shell; the semiconductor refrigerating sheet is arranged in the middle of the top end of the aluminum plate; the middle part of the top end of the epoxy resin is provided with an installation groove which penetrates up and down, the epoxy resin is arranged at the top end of the aluminum plate, and the semiconductor refrigeration sheet is inserted into the inner cavity of the installation groove in a matched manner; the fin is embedded in the inner chamber top of mounting groove. This device can carry out quick cooling to reaction solution, and then can be quick separate out the acetoacetanilide crystallization in reaction solution, and then has strengthened the efficiency that acetoacetanilide crystallization was separated out, the work efficiency of increase, convenient to use.
Description
Technical Field
The invention relates to the technical field of chemical equipment, in particular to rapid crystallization equipment and a crystallization process for acetoacetanilide.
Background
The acetoacetanilide is white crystalline powder, is slightly soluble in water and is easily soluble in organic solvents such as ethanol, diethyl ether, chloroform, hot benzene and the like, is mainly used as a dye intermediate, and is used for preparing dyes such as pyrazolone, bright yellow 5G, acid complex yellow GR, neutral dark yellow GL, hansa yellow G, pigment yellow G and the like;
the preparation method of the acetoacetanilide comprises the following steps: putting 46g of anhydrous aniline and 125ml of anhydrous benzene into a 500ml three-neck flask, dropwise adding a benzene solution of diketene while stirring, refluxing reactants for 1 hour after the dropwise adding is finished within half an hour, then evaporating benzene, dissolving residues by using a hot ethanol water solution, cooling to separate out acetoacetanilide crystals, and filtering;
because when preparing acetoacetanilide, need use the electric jacket to heat the backward flow to reaction solution, and then impel solution to need go on at the inner chamber of electric jacket when carrying out the reaction, and because the electric jacket only has the function of heating, and then lead to the solution evaporating the benzene back, when cooling, use natural cooling to separate out usually, because the solution temperature after the heating backward flow is higher, and then lead to using natural cooling to separate out and reduce acetoacetanilide crystallization's efficiency that can reduce to a very great extent and separate out, and then reduce work efficiency, be not convenient for use.
Disclosure of Invention
The invention aims to provide rapid acetanilide crystallization equipment and a crystallization process, which at least solve the problem that acetanilide crystals are separated out for a long time in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: an acetoacetanilide rapid crystallization device, comprising: the shell, a plurality of wind grooves that are linked together rather than the inner chamber are seted up along circumference at the outer wall top of shell, aluminum plate sets up in the top of shell, the semiconductor refrigeration piece sets up in aluminum plate's top middle part, the mounting groove that runs through about epoxy's top middle part is seted up, epoxy sets up in aluminum plate's top, semiconductor refrigeration piece looks adaptation is pegged graft in the inner chamber of mounting groove, the fin is embedded in the inner chamber top of mounting groove, the barrier ring sets up in epoxy's top, the spout has been seted up along circumference on the top of barrier ring, the top of barrier ring is seted up a plurality of slots that are linked together with the spout inner chamber along circumference equidistance, filtering mechanism sets up in the top of barrier ring.
Preferably, in order to dissipate heat of the semiconductor heat sink, the inner cavity of the housing further includes: the support frame, the support frame sets up in the inner chamber middle part of shell, the mounting bracket sets up in the inner chamber bottom of shell, motor screw connects in the inner chamber of mounting bracket, shaft coupling locking is passed through at the output of motor in the bottom of rotary rod, the inner chamber of support frame is extended into on the top of rotary rod to through the rotatable inner chamber top middle part that sets up in the support frame of bearing, the quantity of flabellum is a plurality of, and is a plurality of the flabellum is along the outer wall that sets up in the rotary rod of circumference equidistance respectively, the flabellum is located the inner chamber of support frame.
Preferably, in order to filter the acetoacetanilide crystals from the water, the filter mechanism comprises: the slider, the quantity of slider is a plurality of, and is a plurality of the slider is respectively along circumference equidistance looks adaptation grafting in the inner chamber of spout, the bottom of branch sets up in the top of slider, the bottom of filter screen rack sets up in the top of branch, a water storage section of thick bamboo spiro union in filter screen rack's bottom middle part.
Utilize cooperation between slider and the spout can be fixed the top at the barrier ring with the filter screen frame, utilize the filter screen frame can filter out acetoacetanilide crystallization from aqueous.
Preferably, the inner cavity of the sliding groove is T-shaped, and the sliding block is inserted into the inner cavity of the sliding groove in a matching mode.
Preferably, the slider and the slot are matched.
Preferably, the bottom end of the radiating fin is in contact with the top end of the semiconductor refrigeration piece.
Preferably, the position of the water storage cylinder corresponds to the position of the filtering hole of the filtering net rack.
A crystallization process of acetoacetanilide rapid crystallization equipment specifically comprises the following steps:
1) When the cooling device is used, the filter screen frame is rotated, the filter screen frame can drive the sliding block to rotate in the inner cavity of the sliding chute through the supporting rod until the sliding block rotates to be corresponding to the position of the inserting groove, the filter screen frame is pulled upwards to move the sliding block out of the inner cavity of the sliding chute, the filter screen frame can be further separated from the blocking ring, a proper amount of normal-temperature water is poured into the top end of the epoxy resin, the water level is lower than the height of the blocking ring, the beaker filled with the reaction solution after heating and refluxing are placed at the top end of the epoxy resin, at the moment, the bottom end of the beaker is immersed in the normal-temperature water, the semiconductor refrigerating sheet is started, as the top end of the semiconductor sheet is a refrigerating end, the bottom end of the semiconductor refrigerating sheet is a heating end, and as the radiating fins have better heat conductivity, the top end of the semiconductor refrigerating sheet is used for transmitting low temperature to the normal-temperature water at the top end of the epoxy resin through the radiating fins, the temperature of the normal-temperature water is further promoted to gradually decrease, the reaction solution in the beaker and can be rapidly cooled and crystallized by the gradually-decreased water, the temperature difference caused by the fact that the temperature is gradually decreased, the temperature is further transferred to the beaker to be prevented from being cracked;
2) Because the bottom of the semiconductor refrigeration piece is the heating end, the bottom of the semiconductor refrigeration piece can be used for transferring heat to the aluminum plate, the motor is started, the output end of the motor is used for driving the rotating rod to rotate, the rotating rod can drive the fan blades to rotate, the rotating fan blades can be used for carrying out air cooling and heat dissipation on the aluminum plate, the aluminum plate has better heat conductivity, the bottom of the semiconductor refrigeration piece can be further cooled through the aluminum plate, the heat dissipation area of the semiconductor refrigeration piece can be increased through the aluminum plate, the heat dissipation effect on the semiconductor refrigeration piece can be further enhanced, the bottom of the semiconductor refrigeration piece can be effectively cooled, the refrigeration temperature at the top end of the semiconductor refrigeration piece can be further effectively reduced, and further, the reaction solution in the beaker can be promoted to be rapidly crystallized;
3) After the crystallization of the solution is finished, the beaker is taken out of the inner cavity of the barrier ring, the sliding block is aligned to the inner cavity of the slot and inserted into the inner cavity of the slot, then the filter screen frame is rotated, namely the sliding block is driven by the supporting rod to rotate in the inner cavity of the slot until the sliding block rotates to a position which is not corresponding to the slot, the filter screen frame can be fixed at the top end of the barrier ring, the solution in the beaker is poured into the top end of the inner cavity of the filter screen frame, the solution and the crystals can be filtered by utilizing the filter screen frame, the precipitated crystals remain at the top end of the filter screen frame, and the waste liquid after reaction flows into the inner cavity of the water storage barrel through the filter screen frame.
The invention provides rapid crystallization equipment and a crystallization process for acetoacetanilide, which have the beneficial effects that:
1. according to the invention, a proper amount of water can be added into the inner cavity of the barrier ring, the beaker filled with the acetoacetanilide is placed in the inner cavity of the barrier ring, the water in the inner cavity of the barrier ring can be cooled by using the semiconductor refrigerating sheet, and the beaker can be cooled by using the cooling water;
2. the fan blades are driven to rotate by the motor through the rotating rods, and then the fan blades can radiate the bottom ends of the semiconductor refrigerating sheets through the aluminum plates, so that the refrigerating effect of the top ends of the semiconductor refrigerating sheets can be enhanced;
3. the device can filter the acetoacetanilide from the aqueous solution by utilizing the filter screen frame, and the waste aqueous solution can flow into the inner cavity of the water storage barrel for collection.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front sectional view of the present invention;
FIG. 3 is an exploded view of the present invention;
FIG. 4 is an enlarged view of the invention at A;
fig. 5 is an enlarged view of the invention at B.
In the figure: 1. the air cooling device comprises a shell, 2, an air duct, 3, a support frame, 4, a mounting frame, 5, a motor, 6, a rotary rod, 7, fan blades, 8, an aluminum plate, 9, a filtering mechanism, 91, a sliding block, 92, a supporting rod, 93, a filtering net frame, 94, a water storage cylinder, 10, a semiconductor refrigerating sheet, 11, epoxy resin, 12, a mounting groove, 13, a radiating fin, 14, a stop ring, 15, a sliding groove, 16 and a slot.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides an apparatus for rapid crystallization of acetoacetanilide, comprising: the air cooling device comprises a shell 1, an air duct 2, a support frame 3, a mounting frame 4, a motor 5, a rotary rod 6, fan blades 7, an aluminum plate 8, a filtering mechanism 9, a semiconductor refrigerating sheet 10, epoxy resin 11, a mounting groove 12, a radiating fin 13, a stop ring 14, a sliding groove 15 and a slot 16, wherein the top of the outer wall of the shell 1 is circumferentially provided with a plurality of air ducts communicated with the inner cavity of the shell, and the aluminum plate 8 is arranged at the top end of the shell 1;
in the present embodiment, the heat dissipation area of the semiconductor chilling plate 10 can be enlarged by using the aluminum plate 8;
the semiconductor refrigerating sheet 10 is arranged in the middle of the top end of the aluminum plate 8;
in this embodiment, the semiconductor refrigeration sheet 10 is a prior art, the semiconductor refrigeration sheet 10 is also called a thermoelectric refrigeration sheet, and is a heat pump, and the semiconductor refrigeration sheet has the advantages that no sliding component is provided, and the semiconductor refrigeration sheet is applied to occasions with limited space, high reliability and no refrigerant pollution, and by utilizing the effect of semiconductor materials, when direct current passes through a galvanic couple formed by connecting two different semiconductor materials in series, heat can be absorbed and released at two ends of the galvanic couple respectively, so that the purpose of refrigeration can be realized, and the semiconductor refrigeration sheet is a refrigeration technology generating negative thermal resistance, and is characterized by no moving component and high reliability, and is not described in detail herein;
the semiconductor refrigeration piece 10 is used for refrigerating an inner cavity of the barrier ring 14, an installation groove 12 which penetrates through the top end of the epoxy resin 11 is formed in the middle of the top end of the epoxy resin 11, the epoxy resin 11 is arranged at the top end of the aluminum plate 8, the semiconductor refrigeration piece 10 is inserted into the inner cavity of the installation groove 12 in a matched mode, the epoxy resin 11 is the prior art and is not described in detail, the epoxy resin 11 is used for fixing the radiating fin 13, and the radiating fin 13 is embedded into the top end of the inner cavity of the installation groove 12;
in the embodiment, the cooling fins 13 can transfer the cold air generated at the top end of the semiconductor chilling plate 10 to the inner cavity of the blocking ring 14;
the bottom end of the radiating fin 13 is in contact with the top end of the semiconductor refrigerating fin 10, so that cold air generated at the top end of the semiconductor refrigerating fin 10 can be transmitted into the inner cavity of the blocking ring 14 through the radiating fin 13, the blocking ring 14 is arranged at the top end of the epoxy resin 11, and a sliding groove 15 is formed in the top end of the blocking ring 14 along the circumferential direction;
in this embodiment, the stopper ring 14 and the support rod 92 can be fixed together by the cooperation between the slide groove 15 and the slider 91;
the inner cavity of the sliding chute 15 is T-shaped, the sliding block 91 is adaptive to and inserted in the inner cavity of the sliding chute 15, the sliding block 91 can be prevented from being separated from the inner cavity of the sliding chute 15, a plurality of inserting grooves 16 communicated with the inner cavity of the sliding chute 15 are formed in the top end of the stop ring 14 at equal intervals along the circumferential direction, and the filtering mechanism 9 is arranged at the top end of the stop ring 14;
in this embodiment, the filtering mechanism 9 is used for filtering the acetoacetanilide crystals out of the aqueous solution;
Preferably, in order to filter the acetoacetanilide crystals from the aqueous solution and collect the waste aqueous solution, the filtering unit 9 comprises: the water storage device comprises a plurality of sliding blocks 91, a support rod 92, a filter screen frame 93 and a water storage cylinder 94, wherein the number of the sliding blocks 91 is a plurality, and the sliding blocks 91 are respectively inserted into the inner cavity of the sliding groove 15 at equal intervals along the circumferential direction;
in this embodiment, the sliding block 91 is matched with the slot 16, so that the sliding block 91 can be inserted into the inner cavity of the sliding slot 15 through the slot 16;
the bottom of branch 92 sets up in the top of slider 91, utilize branch 92 to support filter screen frame 93, the bottom of filter screen frame 93 sets up in the top of branch 92, utilize filter screen frame 93 to filter acetanilide crystallization from aquatic and cross, water storage section of thick bamboo 94 spiro union is in the bottom middle part of filter screen frame 93, utilize water storage section of thick bamboo 94 can collect dumped aqueous solution, the position of water storage section of thick bamboo 94 and the position of filter screen frame 93 filtration pore are corresponding, guarantee that dumped aqueous solution can all flow in the inner chamber of water storage section of thick bamboo 94.
A crystallization process of rapid acetanilide crystallization equipment specifically comprises the following steps:
1) When the semiconductor refrigerating sheet type cooling crystallization device is used, the filter screen frame 93 is rotated, the filter screen frame 93 can drive the sliding block 91 to rotate in the inner cavity of the sliding groove 15 through the supporting rod 92 until the sliding block 91 rotates to a position corresponding to the slot 16, the sliding block 91 can be moved out of the inner cavity of the sliding groove 15 by pulling the filter screen frame 93 upwards, the filter screen frame 93 can be separated from the blocking ring 14, a proper amount of normal-temperature water is poured into the top end of the epoxy resin 11, the water level is lower than the height of the blocking ring 14, a beaker filled with a reaction solution after heating and refluxing is placed at the top end of the epoxy resin 11, the bottom end of the beaker is immersed in the normal-temperature water at the moment, the semiconductor refrigerating sheet 10 is started, the top end of the semiconductor refrigerating sheet 10 is a refrigerating end, the bottom end of the semiconductor refrigerating sheet 10 is a heating end, the radiating fin 13 has good thermal conductivity, the top end of the semiconductor refrigerating sheet 10 transmits the low temperature to the normal-temperature water at the top end of the epoxy resin 11 through the radiating fin 13, the temperature of the normal-temperature water is gradually reduced, the temperature water can be used for rapidly cooling the beaker and the temperature reduction can be prevented from being uniformly caused by temperature difference;
2) Because the bottom end of the semiconductor refrigeration piece 10 is a heating end, the bottom end of the semiconductor refrigeration piece 10 can be used for transferring heat to the aluminum plate 8, the motor 5 is started, the output end of the motor 5 is used for driving the rotating rod 6 to rotate, the rotating rod 6 can be used for driving the fan blade 7 to rotate, the rotating fan blade 7 can be used for conducting air cooling heat dissipation on the aluminum plate 8, the aluminum plate 8 has better heat conductivity, the bottom end of the semiconductor refrigeration piece 10 can be further cooled through the aluminum plate 8, the heat dissipation area of the semiconductor refrigeration piece 10 can be increased through the aluminum plate 8, the heat dissipation effect on the semiconductor refrigeration piece 10 can be further enhanced, the bottom end of the semiconductor refrigeration piece 10 can be effectively cooled, the refrigeration temperature at the top end of the semiconductor refrigeration piece 10 can be further effectively reduced, and the reaction solution in a beaker can be further promoted to be rapidly crystallized;
3) After the crystallization of the solution is finished, the beaker is taken out of the inner cavity of the blocking ring 14, the sliding block 91 is aligned with the inner cavity of the slot 16 and inserted into the inner cavity of the slot 15, then the filter screen frame 93 is rotated to drive the sliding block 91 to rotate in the inner cavity of the slot 15 through the supporting rod 92 until the sliding block 91 rotates to a position which is not corresponding to the slot 16, the filter screen frame 93 can be fixed at the top end of the blocking ring 14, the solution in the beaker is poured into the top end of the inner cavity of the filter screen frame 93, the solution and the crystals can be filtered by utilizing the filter screen frame 93, the precipitated crystals remain at the top end of the filter screen frame 93, and the waste liquid after the reaction flows into the inner cavity of the water storage cylinder 94 through the filter screen frame 93.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides an acetoacetanilide rapid crystallization equipment which characterized in that includes:
the top of the outer wall of the shell (1) is circumferentially provided with a plurality of air grooves (2) communicated with the inner cavity of the shell;
the aluminum plate (8), the aluminum plate (8) is arranged at the top end of the shell (1);
the semiconductor refrigeration piece (10), the semiconductor refrigeration piece (10) is arranged in the middle of the top end of the aluminum plate (8);
the middle of the top end of the epoxy resin (11) is provided with an installation groove (12) which penetrates through the epoxy resin (11) from top to bottom, the epoxy resin (11) is arranged at the top end of the aluminum plate (8), and the semiconductor refrigeration piece (10) is in adaptive insertion connection with the inner cavity of the installation groove (12);
the radiating fin (13), the said radiating fin (13) is embedded in the top end of cavity of the mounting groove (12);
the blocking ring (14) is arranged at the top end of the epoxy resin (11), sliding grooves (15) are formed in the top end of the blocking ring (14) along the circumferential direction, and a plurality of inserting grooves (16) communicated with the inner cavity of the sliding grooves (15) are formed in the top end of the blocking ring (14) at equal intervals along the circumferential direction;
the filtering mechanism (9), the filtering mechanism (9) is arranged at the top end of the blocking ring (14).
2. The rapid acetanilide crystallization device according to claim 1, characterized in that the inner cavity of the housing (1) is further provided with:
the supporting frame (3) is arranged in the middle of the inner cavity of the shell (1);
the mounting rack (4), the mounting rack (4) is arranged at the bottom end of the inner cavity of the shell (1);
the motor (5), the said motor (5) screw connects to the cavity of the mounting bracket (4);
the bottom end of the rotating rod (6) is locked at the output end of the motor (5) through a coupler, and the top end of the rotating rod (6) extends into the inner cavity of the support frame (3) and is rotatably arranged in the middle of the top end of the inner cavity of the support frame (3) through a bearing;
flabellum (7), the quantity of flabellum (7) is a plurality of, and is a plurality of the outer wall in rotary rod (6) is set up along circumference equidistance respectively in flabellum (7), flabellum (7) are located the inner chamber of support frame (3).
3. The rapid crystallization device of acetoacetanilide according to claim 2, wherein said filtering mechanism (9) comprises: the number of the sliding blocks (91) is a plurality, and the sliding blocks (91) are respectively inserted into the inner cavity of the sliding chute (15) at equal intervals along the circumferential direction;
the bottom end of the supporting rod (92) is arranged at the top end of the sliding block (91);
the bottom end of the filter net rack (93) is arranged at the top end of the support rod (92);
and the water storage cylinder (94) is screwed in the middle of the bottom end of the filter screen frame (93).
4. The acetoacetanilide rapid crystallization device according to claim 3, wherein the inner cavity of the chute (15) is T-shaped, and the sliding block (91) is adapted to be inserted into the inner cavity of the chute (15).
5. The rapid acetanilide crystallization apparatus according to claim 4, wherein the slide block (91) is matched with the slot (16).
6. The rapid acetanilide crystallization device according to claim 5, characterized in that the bottom end of the heat sink (13) is in contact with the top end of the semiconductor cooling plate (10).
7. The rapid acetanilide crystallization device according to claim 6, characterized in that the position of the water storage tank (94) corresponds to the position of the filtering holes of the filtering screen rack (93).
8. The crystallization process of acetoacetanilide rapid crystallization equipment according to claim 7, which is characterized by comprising the following steps:
when the device is used, the filter screen frame (93) is rotated, the filter screen frame (93) is utilized to drive the sliding block (91) to rotate in the inner cavity of the sliding groove (15) through the supporting rod (92), the filter screen frame (93) is separated from the barrier ring (14), a proper amount of normal-temperature water is poured into the top end of the epoxy resin (11), a beaker filled with a reaction solution after heating and refluxing are placed at the top end of the epoxy resin (11), the bottom end of the beaker is immersed in the normal-temperature water at the moment, the semiconductor refrigerating sheet (10) is started, the top end of the semiconductor refrigerating sheet (10) is utilized to transmit the low temperature to the normal-temperature water at the top end of the epoxy resin (11) through the radiating fin (13), and the reaction solution in the beaker and the beaker can be rapidly cooled by the gradually-cooled water to separate out crystals;
because the bottom of the semiconductor refrigeration piece (10) is the heating end, the bottom of the semiconductor refrigeration piece (10) can be used for transferring heat to the aluminum plate (8), the rotating fan blade (7) can be used for carrying out air cooling and heat dissipation on the aluminum plate (8), the heat dissipation area of the semiconductor refrigeration piece (10) can be increased by using the aluminum plate (8), the heat dissipation effect on the semiconductor refrigeration piece (10) can be further enhanced, and the cooling temperature at the top end of the semiconductor refrigeration piece (10) can be effectively reduced as the bottom of the semiconductor refrigeration piece (10) can be effectively dissipated;
3) After the solution crystallization is finished, the beaker is taken out of the inner cavity of the blocking ring (14), the sliding block (91) is aligned to the inner cavity of the slot (16) and inserted into the inner cavity of the sliding groove (15), then the filter net rack (93) is rotated to drive the sliding block (91) to rotate in the inner cavity of the sliding groove (15) through the support rod (92), the filter net rack (93) is fixed at the top end of the blocking ring (14), the solution in the beaker is poured into the top end of the inner cavity of the filter net rack (93), the solution and the crystals can be filtered by utilizing the filter net rack (93), the precipitated crystals are remained at the top end of the filter net rack (93), and the waste liquid after the reaction passes through the filter net rack (93) and flows into the inner cavity of the water storage cylinder (94).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211225737.4A CN115300930A (en) | 2022-10-09 | 2022-10-09 | Acetoacetanilide rapid crystallization equipment and crystallization process |
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| CN202211225737.4A CN115300930A (en) | 2022-10-09 | 2022-10-09 | Acetoacetanilide rapid crystallization equipment and crystallization process |
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| CN116036643A (en) * | 2023-03-06 | 2023-05-02 | 天津民祥药业有限公司 | Cooling precipitation device for production of amantadine hydrochloride and use method |
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| CN114534300A (en) * | 2022-02-14 | 2022-05-27 | 安徽晨翔瑞达机械有限公司 | Multifunctional crystallizing tank |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116036643A (en) * | 2023-03-06 | 2023-05-02 | 天津民祥药业有限公司 | Cooling precipitation device for production of amantadine hydrochloride and use method |
| CN116036643B (en) * | 2023-03-06 | 2023-06-09 | 天津民祥药业有限公司 | Cooling precipitation device for production of amantadine hydrochloride and use method |
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