CN114396764B - Suspension drying method for biological sugar crystallization material - Google Patents
Suspension drying method for biological sugar crystallization material Download PDFInfo
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- CN114396764B CN114396764B CN202210296094.6A CN202210296094A CN114396764B CN 114396764 B CN114396764 B CN 114396764B CN 202210296094 A CN202210296094 A CN 202210296094A CN 114396764 B CN114396764 B CN 114396764B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
- F26B17/18—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs
- F26B17/20—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rotating helical blades or other rotary conveyors which may be heated moving materials in stationary chambers, e.g. troughs the axis of rotation being horizontal or slightly inclined
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B20/00—Combinations of machines or apparatus covered by two or more of groups F26B9/00 - F26B19/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
- F26B3/08—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
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Abstract
The invention belongs to the technical field of drying, and relates to a suspension drying method of a biological sugar crystallization material, which comprises the following steps: s1: pre-drying; s2: passing the pre-dried crystal through a quantitative device to obtain a set amount of crystals; s3: conveying the quantitative crystals to a sectional type crystal suspension drying device through an arrangement device, and drying the pre-dried crystals again by adopting a sectional type crystal suspension drying method; s4: and step S3, drying the crystal by sectional suspension drying, drying the crystal, and drying the crystal by suspension drying, wherein the crystal has large gap between the crystals, so that the water content of the crystal can be dried quickly, the crystal is dried quickly and the heat energy is small4The compounding of the lithium iron phosphate can improve the electronic conductivity of the lithium iron phosphate, and the loss is reduced, thereby improving the conversion from electric energy to heat energy and further achieving the purpose of energy conservation.
Description
Technical Field
The invention belongs to the technical field of drying, and particularly relates to a suspension drying method for a biological sugar crystallization material.
Background
In each process of synthesizing the biosaccharide, intermediate products or final products need to be crystallized and dried to obtain semi-finished products or finished products, while the existing crystallization and drying methods are drying methods such as air flow drying, spin drying and drying, but air flow cannot uniformly pass through all the surfaces of crystals, so that the required drying time is too long, and the drying methods such as spin drying and drying have large energy consumption and long drying time.
Disclosure of Invention
The invention provides a suspension drying method of a biological sugar crystallization material, which aims to solve the problems in the prior art.
The invention is realized by adopting the following technical scheme:
a method for drying biological sugar crystallization materials in a suspension manner comprises the following steps:
s1: taking a biological sugar crystallization material to be dried, and pre-drying the crystallization material through a spiral conveying hot air drying device;
s2: the pre-dried crystallized material is processed by a quantitative device to obtain a set amount of crystallized material;
s3: conveying the quantitative crystalline material obtained in the step S2 to a sectional type crystal suspension drying device through a distribution device, and drying the pre-dried crystalline material again by adopting a sectional type crystal suspension drying method;
s4: detecting the dryness of the crystallized material which is dried in the step S3; and inputting the crystalline materials meeting the dryness into a finished product warehouse, and re-drying the crystalline materials not meeting the dryness standard by the method of the step S3 until the dryness requirement is met.
Preferably, the sectional type crystal suspension drying device comprises a drying cylinder, a sectional type suspension area is arranged in the drying cylinder, and a plurality of crystal suspension areas are formed in the sectional type suspension area from top to bottom; each crystal suspension area is connected with an independent control device; controlling the suspension or sedimentation of the crystals in the suspension region through a control device, wherein a heating device is arranged at the bottom of the drying cylinder body to form a heating region;
the sectional type crystal suspension drying method comprises the following substeps:
s31: starting a heating device, and heating the drying cylinder by the heating device;
s32: after the pre-dried crystalline materials are quantitatively input into a sectional type suspension area of the drying cylinder through the arrangement device, suspending the crystalline materials in the topmost suspension area of the sectional type suspension area through the suspension device, wherein the retention time is Ts;
s33: conveying the crystallized materials in the topmost suspension zone to other suspension zones one by one from top to bottom, wherein the retention time of the crystallized materials in each suspension zone is Ts until the crystallized materials are conveyed to a heating zone; meanwhile, the arrangement device continuously inputs the crystalline materials to be dried into the sectional type suspension area, and continuous drying is realized.
After the crystalline materials to be dried enter the drying cylinder, a larger gap exists between every two crystalline materials in the sectional type suspension area, so that the moisture of the crystalline materials can be quickly dried, the crystalline materials are completely dried in the sectional type suspension area and then enter the heating area, and the required heat is very small.
Preferably, the sectional type suspension region comprises 1 section of crystal suspension region, 2 sections of crystal suspension region and 3 sections of crystal suspension region which are arranged from top to bottom;
the method for realizing the continuous drying in the step S33 is as follows:
s331: opening a control device corresponding to the 1-section crystal suspension region, and suspending the crystallized material in the 1-section crystal suspension region;
s332: after the interval time Ts, opening the control device corresponding to the 2-section crystal suspension area, then closing the control device corresponding to the 1-section crystal suspension area, and suspending the crystalline material in the 1-section crystal suspension area in the 2-section crystal suspension area;
s333: opening a control device corresponding to the crystal suspension region of the section 1 to enable a new crystalline material to be dried to be suspended in the crystal suspension region of the section 1;
s334: after the interval time Ts continues, opening the control device corresponding to the 3 sections of crystal suspension regions, closing the control device corresponding to the 2 sections of crystal suspension regions, and suspending the crystalline material in the 2 sections of crystal suspension regions in the 3 sections of crystal suspension regions;
s335: opening a control device corresponding to the 2-section crystal suspension region, and closing a control device corresponding to the 1-section crystal suspension region, so that the crystalline material in the 1-section crystal suspension region is suspended in the 2-section crystal suspension region;
s336: opening a control device corresponding to the crystal suspension region of the section 1 to enable a new crystalline material to be dried to be suspended in the crystal suspension region of the section 1;
s337: and after the interval time Ts is continued, closing the control device corresponding to the 3 sections of crystal suspension regions, enabling the crystallization materials in the 3 sections of crystal suspension regions to fall into the heating region, circulating in such a way, enabling the crystallization materials to be dried to continuously pass through the sectional type suspension regions and then fall into the heating region, and when the crystallization materials in the heating region are accumulated to a certain amount, opening the lower cover body to output the dried crystallization materials, and performing the step S4.
Preferably, the drying cylinder comprises an inner cylinder and an outer cylinder, a plurality of ultrasonic emitter units are respectively arranged on two opposite side surfaces of the inner cylinder, the ultrasonic emitter units on the two side surfaces correspond to each other in pairs, a plurality of standing wave fields formed by superposition of sound waves with the same wavelength and amplitude and opposite propagation directions are formed between the ultrasonic emitter units corresponding to each other in pairs, the crystal suspension areas are formed in the standing wave fields, and each ultrasonic emitter unit is respectively connected with a control device which controls the switch of the ultrasonic emitter unit.
Preferably, the top of the drying cylinder body is provided with an upper cover body, the bottom of the drying cylinder body is provided with a lower cover body, the upper cover body is provided with the arrangement device, and the lower cover body is provided with a heating device.
The arrangement device comprises a filter screen arranged on the upper cover body, wherein filter holes corresponding to stagnation points of standing waves are formed in the filter screen, a scraper is arranged in the middle of the filter screen and connected with a driving mechanism, the driving mechanism can be a servo motor, and crystals falling on the filter screen are scraped into the drying cylinder body through the rotation of the scraper; the heating device is an electric heating coil arranged in the lower cover body, and the lower cover body of the invention forms an inwards concave spherical structure, thus improving the heating uniformity of the crystal.
Preferably, the screw conveying hot air drying device comprises a conveying cavity, a screw rod conveying assembly is transversely arranged in the conveying cavity, a crystal inlet is arranged above the conveying cavity, a hot air inlet is arranged below the conveying cavity, the hot air inlet is connected with an air flow heating device, the air flow heating device is connected with an air supply device, a discharge port is arranged at the tail end of the conveying cavity, the discharge port is connected with a buffer box, a crystalline crystal outlet is formed in the bottom of the buffer box, a quantifying device is arranged on the crystalline crystal outlet, an air flow outlet is formed in the top of the buffer box, and the air flow outlet is connected with the air supply device.
The quantitative device can be a one-way control valve, and the output crystal amount can be controlled by controlling the opening and closing time of the one-way control valve.
Preferably, the air flow heating device includes the air flow cavity, the periphery of air flow cavity is provided with the heat preservation, the inside of air flow cavity is provided with the radiating fin of range upon range of range, be formed with air current channel between each radiating fin, be provided with graphite alkene heating film on radiating fin's the both sides, graphite alkene heating film includes the polyimide bottom, the multi-disc graphite alkene fibrous sheet that generates heat, the electrode slice of two rectangular shapes, the polyimide surface course, the polyimide bottom bonding is on radiating fin is surperficial, wherein, two electrode slices are connected with the both ends of graphite alkene fibrous sheet that generates heat respectively, positive negative power is connected respectively to two electrode slices.
The air flow guide device comprises three groups of radiating fins, wherein one group of radiating fins is positioned at the bottom of an air flow inlet, the second group of radiating fins is positioned above the air flow inlet, one end of each radiating fin, which is far away from the air flow inlet, forms a first guide air flow outlet with an air flow cavity inner wall, the third group of radiating fins are positioned above the second group of radiating fins and below the air flow outlet, the third group of radiating fins are close to the air flow inlet end and form a second guide air flow outlet with the air flow cavity inner wall, and air flow is heated when passing through the air flow cavity.
Preferably, the electrode plate comprises a positive electrode plate and a negative electrode plate, wherein the positive electrode plate is manufactured by the following steps: mixing LiFeO4Mixing the graphene modified composite material and polyvinylidene fluoride according to a certain mass ratio, coating the mixture on an aluminum foil, drying and cutting to obtain the positive electrode plate.
The invention utilizes graphene and LiFeO4The compounding of the lithium iron phosphate can improve the electronic conductivity of the lithium iron phosphate, and meanwhile, the obstruction of charge transmission cannot be increased basically, and the loss is reduced, so that the conversion from electric energy to heat energy is improved, and the aim of saving energy is fulfilled.
Compared with the prior art, the invention has the beneficial effects that:
the invention is realized by pre-drying the crystalAfter drying, the crystals (crystallized materials) are finally dried by adopting sectional type suspension drying, and a larger gap exists between every two crystals in the suspension drying process, so that the water of the crystals can be quickly dried, the crystals are quickly dried, the required heat energy is small, and secondly, the heating element of the invention utilizes the graphene and the LiFeO4The compounding of the lithium iron phosphate can improve the electronic conductivity of the lithium iron phosphate, and the loss is reduced, thereby improving the conversion from electric energy to heat energy and further achieving the purpose of energy conservation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the structure of a drying apparatus according to the present invention;
FIG. 2 is an enlarged schematic view of A of FIG. 1;
FIG. 3 is a schematic view of a sectional type crystal suspension drying apparatus according to the present invention;
FIG. 4 is a schematic view of the configuration of the arrangement of the present invention;
fig. 5 is a schematic structural diagram of a graphene heating film according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
As shown in FIGS. 1 to 5, this example used the method of the present invention to dry crystalline 2, 3.4, 6-diacetone mannose as an intermediate for preparing triacetyl monoacetone mannose; in this example, crystalline 2, 3.4, 6-diacetone mannose was prepared by the following steps:
putting mannose and dimethylformamide into a reaction kettle, stirring and dissolving at normal temperature, adding p-toluenesulfonic acid, dropwise adding 2-methoxypropene, uniformly mixing, stirring, tracking a thin layer, slowly adding triethylamine, ice water and dichloromethane, and treating the uniformly mixed reaction solution to obtain 2, 3.4, 6-diacetone mannose crystals; preparing 100KG of crystal 2, 3, 4, 6-diacetone mannose by adopting the method; dividing the mixture into 4 groups, wherein each group contains 25KG;
the embodiment discloses a suspension drying method of a biological sugar crystallization material, which comprises the following steps:
s1: taking 25KG of 2, 3.4, 6-diacetone mannose crystallization material to be dried, and pre-drying the crystallization material by a spiral conveying hot air drying device; setting the rotating speed of a screw of the spiral conveying hot air drying device to be 100r/min;
s2: the pre-dried crystals pass through a quantitative device to obtain a set amount of crystallized materials; the amount of crystals (crystallized material) dropped each time in this example was set to 100g to 150g;
s3: conveying the quantitative crystallization material obtained in the step S2 to a sectional type crystal suspension drying device through a configuration device, and drying the pre-dried crystals again by adopting a sectional type crystal suspension drying method;
s4: performing dryness detection on the crystal whose drying is completed in step S3; inputting the crystals meeting the dryness into a finished product library, and re-drying the crystals not meeting the dryness standard by the method of the step S3 until the dryness requirement is met.
The sectional type crystal suspension drying device comprises a drying cylinder body, wherein a sectional type suspension area 100 is arranged in the drying cylinder body, and a plurality of crystal suspension areas 101 are formed in the sectional type suspension area from top to bottom; each crystal suspension area is connected with an independent control device 300; controlling the suspension or sedimentation of the crystals in the suspension region through a control device, wherein a heating device is arranged at the bottom of the drying cylinder body to form a heating region 200;
the sectional type crystal suspension drying method comprises the following substeps:
s31: starting a heating device, and heating the drying cylinder by the heating device;
s32: after the pre-dried crystals are quantitatively input into a sectional type suspension area of the drying cylinder through the arrangement device, the crystals are suspended in the topmost suspension area of the sectional type suspension area through the suspension device, and the retention time is Ts;
s33: conveying the crystals in the topmost suspension zone to other suspension zones one by one from top to bottom, wherein the residence time of the crystals in each suspension zone is 3s until the crystals are conveyed to a heating zone; meanwhile, the arrangement device continuously inputs the crystals to be dried into the sectional type suspension area, and continuous drying is realized.
The sectional type suspension region of the embodiment comprises 1 section of crystal suspension region, 2 sections of crystal suspension region and 3 sections of crystal suspension region which are arranged from top to bottom;
the method for realizing the continuous drying in the step S33 is as follows:
s331: opening a control device corresponding to the 1-section crystal suspension region, and suspending the crystals in the 1-section crystal suspension region;
s332: after the interval time Ts, opening the control device corresponding to the 2-section crystal suspension area, then closing the control device corresponding to the 1-section crystal suspension area, and suspending the crystals in the 1-section crystal suspension area in the 2-section crystal suspension area;
s333: opening a control device corresponding to the crystal suspension region of the section 1 to enable new crystals to be dried to be suspended in the crystal suspension region of the section 1;
s334: after the interval time is continued for 3s, opening the control device corresponding to the 3 sections of crystal suspension regions, closing the control device corresponding to the 2 sections of crystal suspension regions, and suspending the crystals in the 2 sections of crystal suspension regions in the 3 sections of crystal suspension regions;
s335: opening a control device corresponding to the 2-section crystal suspension region, and closing a control device corresponding to the 1-section crystal suspension region, so that crystals in the 1-section crystal suspension region are suspended in the 2-section crystal suspension region;
s336: opening a control device corresponding to the crystal suspension region of the section 1 to enable new crystals to be dried to be suspended in the crystal suspension region of the section 1;
s337: and after the interval time is continued for 3S, closing the control device corresponding to the 3 sections of crystal suspension regions, enabling the crystals in the 3 sections of crystal suspension regions to fall into the heating region, circulating the steps so that the crystals to be dried continuously fall into the heating region after passing through the sectional type suspension region, and when the crystals in the heating region are accumulated to a certain amount, opening the lower cover body and outputting the dried lower cover body to perform the step S4.
The drying cylinder body comprises an inner cylinder 400 and an outer cylinder 401, wherein a plurality of ultrasonic emitter units are respectively arranged on two opposite side surfaces of the inner cylinder, the ultrasonic emitter units on the two side surfaces correspond to each other in a pairwise manner, a plurality of standing wave fields formed by superposition of sound waves with the same wavelength and amplitude and opposite propagation directions are formed between the ultrasonic emitter units corresponding to each other in a pairwise manner, crystal suspension areas are formed in the standing wave fields, and each ultrasonic emitter unit is respectively connected with a control device, and the control device controls the switches of the ultrasonic emitter units. The distance between every two ultrasonic transmitter units which correspond to each other is an integral multiple of half wavelength of transmitted waves, so that the crystal can be suspended in a standing wave field, and each ultrasonic transmitter unit comprises a fixed plate which is fixedly connected with a plurality of ultrasonic transmitters;
an upper cover body 500 is arranged at the top of the drying cylinder body, a lower cover body 501 is arranged at the bottom of the drying cylinder body, the arrangement device is arranged on the upper cover body, and a heating device is arranged on the lower cover body. The arrangement device comprises a filter screen 502 arranged on the upper cover body, a filtering hole 503 corresponding to a standing wave field standing point is formed on the filter screen, a scraper 504 is arranged in the middle of the filter screen, the scraper is connected with a driving mechanism 505, the driving mechanism can be a servo motor, and crystals falling on the filter screen are scraped into the drying cylinder body through the rotation of the scraper; the heating device is an electric heating coil (not shown) arranged in the lower cover body, and the lower cover body of the invention forms an inwards concave spherical structure, thus improving the heating uniformity of the crystal.
Screw conveying hot air drying device is including carrying cavity 600, transversely be provided with hob conveyor component 601 in the transport cavity, the top of carrying the cavity is provided with crystal import 602, the below of carrying the cavity is provided with hot-blast import 603, hot-blast access connection has air flow heating device 604, air flow heating device connects air supply arrangement 605, the end of carrying the cavity sets up discharge gate 606, and buffer case 607 is connected to the discharge gate, the bottom of buffer case is provided with crystal export 608, be provided with proportioning device 609 in the crystal export, the top of buffer case is provided with air outlet 610, air outlet connects air supply arrangement. The quantitative device can be a one-way control valve, and can control the output crystal quantity by controlling the opening and closing time of the one-way control valve. The air flow heating device comprises an air flow cavity 700, a heat preservation layer 701 is arranged on the periphery of the air flow cavity, radiating fins 702 which are arranged in a stacked mode are arranged inside the air flow cavity, air flow channels are formed among the radiating fins, graphene heating films 703 are arranged on two sides of the radiating fins, each graphene heating film comprises a polyimide bottom layer 704, a plurality of graphene heating fiber sheets 705, two strip-shaped electrode sheets 706 and a polyimide surface layer 707, the polyimide bottom layers are bonded on the surfaces of the radiating fins, wherein the two electrode sheets are respectively connected with two ends of each graphene heating fiber sheet, and the two electrode sheets are respectively connected with a positive power supply and a negative power supply. The air flow guide device comprises three groups of radiating fins, wherein one group of radiating fins is positioned at the bottom of an air flow inlet, the second group of radiating fins is positioned above the air flow inlet, one end of each radiating fin, which is far away from the air flow inlet, forms a first guide air flow outlet with an air flow cavity inner wall, the third group of radiating fins are positioned above the second group of radiating fins and below the air flow outlet, the third group of radiating fins are close to the air flow inlet end and form a second guide air flow outlet with the air flow cavity inner wall, and air flow is heated when passing through the air flow cavity. The air current passes through air supply arrangement and sends into among the air current heating device, and in the air current heating device, the air current directly gets into to carry the cavity after being heated through graphite alkene heating film, mixes hot gas flow and crystal through the hob conveyor assembly and carries out the predrying to the crystal, progressively pushes into the buffer memory case, can further carry out the predrying to the crystal, and the surplus hot gas flow that predrys flows into the air current heating device and continues to be heated and utilize.
The electrode plate comprises a positive electrode plate and a negative electrode plate, wherein the manufacturing method of the positive electrode plate comprises the following steps: mixing LiFeO4Mixing the graphene modified composite material and polyvinylidene fluoride according to a certain mass ratio, coating the mixture on an aluminum foil, drying and cutting to obtain the positive electrode plate.
As the existing positive electrode plate mostly adopts LiFePO4Anode material, LiFePO4The anode material stores and releases electric energy mainly through lithium ion intercalation and deintercalation in a layered structure, but LiFePO4Intrinsic lithium ion conductivity and electron conductivity are low; because the energy consumption of the application is higher, if the LiFePO is directly selected4The anode material can cause low conversion efficiency from electric energy to heat energy; the invention utilizes graphene and LiFeO4The compounding of the lithium iron phosphate can improve the electronic conductivity of the lithium iron phosphate, and meanwhile, the obstruction of charge transmission cannot be increased basically, and the loss is reduced, so that the conversion from electric energy to heat energy is improved, and the aim of saving energy is fulfilled.
Wherein, LiFeO4The preparation method of the graphene modified composite material comprises the following steps:
a1, reduction of LiOH. H2Dissolving O in deionized water under magnetic stirring until the O is completely dissolved;
a2, adding H dropwise to the mixture obtained in A1 under stirring3PO4Until the white suspended matter is added into the solution;
a3, dispersing the ethylenediamine modified graphene oxide in deionized water, and uniformly mixing and dispersing;
a4, FeSO4·7H2Dissolving O in the mixed solution obtained in the step A3, and uniformly mixing;
a5, adding the mixed solution obtained in the step A4 into the mixed solution obtained in the step A2, stirring uniformly, and continuing stirring for a certain time;
a6, placing the mixture obtained in A5 in a reaction kettle for hydrothermal reaction;
a7, repeatedly cleaning the precipitate obtained in A6, and drying in vacuum to obtain LiFeO4A graphene modified composite material.
The specific method for modifying graphene oxide by ethylenediamine comprises the following steps:
a31, adding the graphene oxide prepared by the Hummers method into DMF, and ultrasonically dispersing and stripping to obtain uniformly dispersed graphene oxide/DMF;
a32, heating graphene oxide/DMF (dimethyl formamide) through an oil bath, adding concentrated ammonia water and ethylenediamine, reacting for 5-7 h, and finishing the reaction;
a33, after the reaction is finished, carrying out suction filtration, and washing for multiple times by using absolute ethyl alcohol; and (5) drying in vacuum to obtain the ethylenediamine modified graphene oxide.
The time required for drying 25KG of crystalline 2, 3.4, 6-diacetone mannose in this example was 37min, the power consumption was 5.4KWH and the moisture content of the crystals obtained was 0.12%.
Comparative example 2
The basic steps are the same as example 1, and are different from example 1: the embodiment does not provide a sectional type suspension area; the time required for drying 25KG of crystalline 2, 3.4, 6-diacetone mannose was 52min, the power consumption was 15.3KWH and the moisture content of the obtained crystals was 0.17%.
Comparative example 3
The basic steps are the same as example 1, and different from example 1: in the embodiment, 4 sections of suspension areas are arranged; the time required for drying 25KG of crystalline 2, 3.4, 6-diacetone mannose was 45min, the power consumption was 6.3KWH and the moisture content of the obtained crystals was 0.12%.
Comparative example 4
The basic steps are the same as example 1, and are different from example 1: the air flow heating device in the embodiment adopts a commercial hot air blower; the time required for drying 25KG of crystalline 2, 3.4, 6-diacetone mannose was 45min, the power consumption was 10.3KWH and the moisture content of the obtained crystals was 0.15%.
And (4) experimental conclusion:
example 1 in comparison with comparative example 1, it is demonstrated that the sectional type suspension zone provided by the invention can effectively improve the drying speed in addition to the dryness of the product; the reason is that the heating surface of a single crystal in the sectional type suspension area is greatly improved, so that the single crystal can be dried quickly, and the crystal is heated more uniformly; example 1 in comparison with comparative example 2, shows that the number of suspension zones is not more, the more advantageous the invention is, the 4-segment suspension zone is not more than the 3-segment suspension zoneThe suspension zone has a distinct advantage in that the crystals are sufficiently dried in a 3-stage suspension zone; example 1 is compared to comparative example 3, illustrating the use of graphene with LiFeO in the present application4The compounding of (2) can improve the electronic conductivity of the lithium iron phosphate, and meanwhile, the obstruction of charge transmission cannot be increased basically, and the loss is reduced, so that the conversion from electric energy to heat energy is improved, and the power consumption is reduced.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and these embodiments are still within the scope of the invention.
Claims (6)
1. A suspension drying method for a biological sugar crystallization material is characterized by comprising the following steps: the method comprises the following steps:
s1: taking a biological sugar crystallization material to be dried, and pre-drying the biological sugar crystallization material through a spiral conveying hot air drying device;
s2: obtaining a set amount of crystallized materials from the pre-dried crystallized biological sugar materials through a quantitative device;
s3: conveying the quantitative crystalline material obtained in the step S2 to a sectional type crystal suspension drying device through a distribution device, and drying the pre-dried crystalline material again by adopting a sectional type crystal suspension drying method;
s4: detecting the dryness of the crystallized material which is dried in the step S3; inputting the crystalline material meeting the dryness into a finished product warehouse, and re-drying the crystalline material not meeting the dryness standard by the method of S3 until the crystalline material meets the dryness requirement;
the sectional type crystal suspension drying device comprises a drying cylinder, wherein a sectional type suspension area is arranged in the drying cylinder, and a plurality of crystal suspension areas are formed in the sectional type suspension area from top to bottom; each crystal suspension area is connected with an independent control device; controlling the crystallization materials to suspend or settle in the suspension zone through a control device, wherein a heating device is arranged at the bottom of the drying cylinder body to form a heating zone;
the sectional type crystal suspension drying method comprises the following substeps:
s31: starting a heating device, and heating the drying cylinder by the heating device;
s32: after the pre-dried crystalline materials are quantitatively input into a sectional type suspension area of the drying cylinder through the arrangement device, suspending the crystalline materials in the topmost suspension area of the sectional type suspension area through the suspension device, wherein the retention time is Ts;
s33: conveying the crystallized materials in the topmost suspension zone to other suspension zones one by one from top to bottom, wherein the retention time of the crystallized materials in each suspension zone is Ts until the crystallized materials are conveyed to a heating zone; meanwhile, the arrangement device continuously inputs the crystalline materials to be dried into the sectional type suspension area to realize continuous drying;
the sectional type suspension region comprises 1 section of crystal suspension region, 2 sections of crystal suspension region and 3 sections of crystal suspension region which are arranged from top to bottom;
the method for realizing continuous drying in the step S33 is as follows:
s331: opening a control device corresponding to the 1-section crystal suspension region, and suspending the crystallized material in the 1-section crystal suspension region;
s332: after the interval time Ts, opening the control device corresponding to the 2-section crystal suspension area, then closing the control device corresponding to the 1-section crystal suspension area, and suspending the crystalline material in the 1-section crystal suspension area in the 2-section crystal suspension area;
s333: opening a control device corresponding to the crystal suspension region of the section 1 to enable a new crystalline material to be dried to be suspended in the crystal suspension region of the section 1;
s334: after the interval time Ts continues, opening the control device corresponding to the 3 sections of crystal suspension regions, closing the control device corresponding to the 2 sections of crystal suspension regions, and suspending the crystalline material in the 2 sections of crystal suspension regions in the 3 sections of crystal suspension regions;
s335: opening a control device corresponding to the 2-section crystal suspension region, and closing a control device corresponding to the 1-section crystal suspension region, so that the crystalline material in the 1-section crystal suspension region is suspended in the 2-section crystal suspension region;
s336: opening a control device corresponding to the section 1 of crystal suspension region to enable a new to-be-dried crystallization material to suspend in the section 1 of crystal suspension region;
s337: and after the interval time Ts is continued, closing the control device corresponding to the 3 sections of crystal suspension regions, enabling the crystallization materials in the 3 sections of crystal suspension regions to fall into the heating region, circulating in such a way, enabling the crystallization materials to be dried to continuously pass through the sectional type suspension regions and then fall into the heating region, and when the crystallization materials in the heating region are accumulated to a certain amount, opening the lower cover body to output the dried crystallization materials, and performing the step S4.
2. The method of claim 1, wherein the drying step comprises: the drying cylinder comprises an inner cylinder and an outer cylinder, wherein a plurality of ultrasonic emitter units are respectively arranged on two opposite side surfaces of the inner cylinder, the ultrasonic emitter units on the two side surfaces correspond to each other in pairs, a plurality of standing wave fields formed by superposition of sound waves with the same two wavelengths and amplitudes and opposite propagation directions are formed between the ultrasonic emitter units corresponding to each other in pairs, crystal suspension areas are formed in the standing wave fields, and each ultrasonic emitter unit is respectively connected with a control device which controls the switches of the ultrasonic emitter units.
3. The method of claim 1, wherein the drying step comprises: the top of the drying cylinder body is provided with an upper cover body, the bottom of the drying cylinder body is provided with a lower cover body, the upper cover body is provided with the arrangement device, and the lower cover body is provided with a heating device.
4. The method of claim 1, wherein the drying step comprises: the screw conveying hot air drying device comprises a conveying cavity, a screw rod conveying assembly is transversely arranged in the conveying cavity, a crystal inlet is arranged above the conveying cavity, a hot air inlet is arranged below the conveying cavity, the hot air inlet is connected with an air flow heating device, the air flow heating device is connected with an air supply device, a discharge port is arranged at the tail end of the conveying cavity, a buffer box is connected with the discharge port, a crystalline crystal outlet is arranged at the bottom of the buffer box, a quantifying device is arranged on the crystalline crystal outlet, an air flow outlet is arranged at the top of the buffer box, and the air flow outlet is connected with the air supply device.
5. The method of claim 4, wherein the drying step comprises the steps of: the air flow heating device comprises an air flow cavity, a heat preservation layer is arranged on the periphery of the air flow cavity, heat dissipation fins arranged in a stacked mode are arranged inside the air flow cavity, an air flow channel is formed between each heat dissipation fin, graphene heating films are arranged on two sides of each heat dissipation fin and comprise polyimide bottom layers, a plurality of graphene heating fiber sheets, two strip-shaped electrode plates and polyimide surface layers, the polyimide bottom layers are bonded on the surfaces of the heat dissipation fins, the two electrode plates are connected with two ends of each graphene heating fiber sheet respectively, and the two electrode plates are connected with a positive power supply and a negative power supply respectively.
6. The method of claim 5, wherein the drying step comprises the steps of: the electrode plate comprises a positive electrode plate and a negative electrode plate, wherein the manufacturing method of the positive electrode plate comprises the following steps: mixing LiFeO4And mixing the graphene modified composite material with polyvinylidene fluoride, coating the mixture on an aluminum foil, drying and cutting to obtain the positive electrode plate.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011043541A2 (en) * | 2009-10-08 | 2011-04-14 | 한국에너지기술연구원 | Fluidized bed drying apparatus |
| CN202204242U (en) * | 2011-08-31 | 2012-04-25 | 南宁吉然糖业技术有限公司 | Bagasse multistage pulse dryer |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD281755A5 (en) * | 1988-12-12 | 1990-08-22 | Koethen Ing Hochschule | MULTI-STAGE CYCLIC SWIVEL LAYERING APPARATUS FOR GRANULATING PRE-DRIED THERMOLABILER HYDROPHOIC SOLIDS, PREFERABLY OF VOLCANIZING AUXILIARIES |
| JPH0716952B2 (en) * | 1989-07-27 | 1995-03-01 | チッソ株式会社 | Vertical 2-stage fluid dryer |
| CN2114796U (en) * | 1991-11-08 | 1992-09-02 | 中国科学院工程热物理研究所 | Multi-layer multi-chamber fluidized bed dryer |
| CN101377378A (en) * | 2008-09-18 | 2009-03-04 | 无锡江加建设机械有限公司 | Fluidized bed drying machine of control flow |
| CN102226628B (en) * | 2011-06-03 | 2013-08-07 | 重庆邮电大学 | Method for drying strontium chloride hexahydrate |
| CN106152705B (en) * | 2016-07-05 | 2019-02-05 | 江苏大学 | A kind of energy-efficient two-stage fluidized drying device |
| CN210135768U (en) * | 2019-05-15 | 2020-03-10 | 无锡市现代喷雾干燥设备有限公司 | Chemical industry crystal drying equipment |
| CN210569524U (en) * | 2019-09-25 | 2020-05-19 | 江阴市昌盛药化机械有限公司 | Multi-layer boiling dryer |
| CN213040902U (en) * | 2020-09-14 | 2021-04-23 | 苏州赛弗尔机械有限公司 | Multistage fluidized drying machine |
| CN112959766A (en) * | 2021-03-26 | 2021-06-15 | 华南理工大学 | Graphene heating sheet and preparation method and application thereof |
| CN113945070B (en) * | 2021-10-09 | 2022-09-27 | 无锡赫普轻工设备技术有限公司 | Micro nano powder rapid drying and collecting device |
-
2022
- 2022-03-24 CN CN202210296094.6A patent/CN114396764B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011043541A2 (en) * | 2009-10-08 | 2011-04-14 | 한국에너지기술연구원 | Fluidized bed drying apparatus |
| CN202204242U (en) * | 2011-08-31 | 2012-04-25 | 南宁吉然糖业技术有限公司 | Bagasse multistage pulse dryer |
Non-Patent Citations (1)
| Title |
|---|
| 基于气旋逆流冷却小型谷物干燥机的开发研究;蒋雪松等;《农业科技与信息》;20161205(第34期);全文 * |
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Denomination of invention: A Suspension Drying Method for Biological Sugar Crystallization Materials Effective date of registration: 20230905 Granted publication date: 20220617 Pledgee: Jinhua Branch of Bank of Ningbo Co.,Ltd. Pledgor: SYNGARS TECHNOLOGY CO.,LTD. Registration number: Y2023980055336 |