CN113623946A - System and method suitable for controlling agglomeration in acesulfame potassium production process - Google Patents
System and method suitable for controlling agglomeration in acesulfame potassium production process Download PDFInfo
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- CN113623946A CN113623946A CN202110739577.4A CN202110739577A CN113623946A CN 113623946 A CN113623946 A CN 113623946A CN 202110739577 A CN202110739577 A CN 202110739577A CN 113623946 A CN113623946 A CN 113623946A
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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
- F26B3/084—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 with heat exchange taking place in the fluidised bed, e.g. combined direct and indirect heat exchange
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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
- F26B21/003—Supply-air or gas filters
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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
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/08—Humidity
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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
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/10—Temperature; Pressure
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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
- F26B25/06—Chambers, containers, or receptacles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D13/00—Heat-exchange apparatus using a fluidised bed
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- Drying Of Solid Materials (AREA)
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Abstract
The invention provides a system and a method suitable for controlling agglomeration in an acesulfame potassium production process, which control the drying temperature, the drying time and the cooling and packaging temperature of a fluidized bed so as to control the drying weight loss of the acesulfame potassium, effectively prevent the agglomeration of the acesulfame potassium, improve the production efficiency, reduce the cost and provide a new idea for solving the key problem of industrial commonality.
Description
Technical Field
The invention relates to the field of chemical industry, in particular to a system and a method suitable for controlling agglomeration in an acesulfame potassium production process.
Background
AK sugar (acesufame-K) is known as 6-Methyl-1,2, 3-oxathiazine-4 (3H) -ketone-2, 2-potassium dioxide in Chinese culture, and is known as 6-Methyl-1,2,3-oxathiazin-4(3H) -one 2,2-dioxide potassium salt in English, which is commonly called Acesulfame potassium. Appearance properties: colorless crystals. Solubility: is easily dissolved in water, and the solubility is 270g/L at 20 ℃. CAS number 55589-62-3. The molecular formula is as follows: c4H4O4KNS. Molecular weight: 201.24. melting Point (. degree. C.): 229-232. Relative density (water ═ 1): 1.81. pH value: the pH value is 5.5-7.5. Acesulfame potassium has the advantages of safety, no toxicity, stable property, sweet taste, no bad aftertaste, proper price and the like, is one of the sweeteners with the best stability in the world at present, and is used as a sweetener in the aspects of food, medicine and the like.
The agglomeration is a phenomenon commonly existing in the storing process of the acesulfame potassium, and the length of the agglomeration period directly influences the normal production process and the subsequent use of the acesulfame potassium. At present, most manufacturers adopt the method of cooling materials by opening cooling, breaking the materials after agglomeration and then packaging, although the agglomeration phenomenon of acesulfame potassium can be reduced in a short period, the method has the following defects: (1) foreign matters are easy to enter in the process of opening the cooling material, so that the use of customers is influenced; (2) the production efficiency in the process of breaking and packaging is low, and the cost is increased; (3) the acesulfame potassium crystal is transported and stored under the conditions of high temperature and high humidity, the surface of the acesulfame potassium crystal can be dissolved, and serious agglomeration can still occur in the process of recrystallization.
Therefore, there is a need for an effective technique for preventing agglomeration of acesulfame potassium.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention is directed to a system and method for controlling agglomeration in acesulfame potassium production process, which solves the problems of the prior art.
The core innovation point of the method is that the drying weight loss of the acesulfame potassium is controlled by controlling the drying temperature and the drying time of the fluidized bed and the temperature of the cooling package, so that the agglomeration of the acesulfame potassium is effectively prevented.
In order to achieve the above objects and other related objects, the present invention adopts the following technical solutions:
in a first aspect of the present invention, there is provided a system for controlling agglomeration in an acesulfame potassium production process, comprising:
a fluidized bed first chamber for receiving heated air and contacting acesulfame potassium tide product from the material inlet with the heated air;
a fluidized bed second chamber for receiving the heated air and contacting the acesulfame potassium material from the fluidized bed first chamber with the heated air;
a third chamber of the fluidized bed for receiving the cooled air and contacting the acesulfame potassium material from the second chamber of the fluidized bed with cold air;
the air filter is in fluid communication with the air dehumidifier, the air dehumidifier is in fluid communication with the air heater, the air heater is in fluid communication with the first fluidized bed chamber, the second fluidized bed chamber and the third fluidized bed chamber, the first fluidized bed chamber is in material communication with the second fluidized bed chamber, and the second fluidized bed chamber is in material communication with the third fluidized bed chamber.
In the invention, the agglomeration control means that the produced acesulfame potassium tide product is treated and then packaged, so that the agglomeration phenomenon of the acesulfame potassium product in the storage process is prevented or prolonged.
Preferably, the air temperature in the first chamber of the fluidized bed is between 45 ℃ and 60 ℃.
The contact time of the acesulfame potassium tide product and the air is 22-26 min.
The drying weight loss of the acesulfame-K wet product is 4-5.5%.
In the present invention, the unit of the loss on drying is mass%.
Preferably, the loss on drying of the acesulfame potassium material passing through the first chamber of the fluidized bed is between 1.2% and 1.5%.
Preferably, the air temperature in the second chamber of the fluidized bed is between 102 ℃ and 106 ℃.
The contact time of the acesulfame potassium material and the air is 15 min-20 min.
Preferably, the drying weight loss of the acesulfame potassium material passing through the second chamber of the fluidized bed is 0.03-0.09%.
Preferably, the air temperature in the third chamber of the fluidized bed is between 10 ℃ and 30 ℃.
The contact time of the acesulfame potassium and the air is 8 min-10 min.
Preferably, the temperature of the acesulfame K mass cooled in the third chamber of the fluidised bed is in the range of from 20 ℃ to 25 ℃.
In one embodiment, the system further comprises:
the air filter is used for filtering air to obtain filtered air;
the air dehumidifier is used for dehumidifying the filtered air to obtain dehumidified air;
and the air heater is used for heating the dehumidified air to obtain heated air.
The air filter is in fluid communication with the air dehumidifier, the air dehumidifier is in fluid communication with the air heater, and the air heater is in fluid communication with the first, second, and third fluidized bed chambers, respectively.
Preferably, the air passes through an air filter to filter out dust particles in the air, so as to obtain filtered air, which meets the international standard ISO 14644-1: 2015.
preferably, the filtered air passes through an air dehumidifier to obtain dehumidified air, and the requirements of relative humidity of 10-25% RH at the temperature of 2-7 ℃ are met.
Preferably, the dehumidified air passes through an air heater to obtain heated air, and the heated air meets the technical requirement of 100-120 ℃.
In a second aspect of the invention, there is provided the use of the aforementioned system for preventing agglomeration of acesulfame potassium.
In a third aspect of the present invention, there is provided a method for preventing agglomeration of acesulfame potassium, comprising the steps of:
(1) respectively introducing the heated air into the first fluidized bed chamber, the second fluidized bed chamber and the third fluidized bed chamber;
(2) contacting the acesulfame-K tide product with hot air in the fluidized bed first chamber;
(3) contacting the acesulfame potassium material from the first chamber of the fluidised bed with hot air in the second chamber of the fluidised bed;
(4) in the third chamber of the fluidised bed, the acesulfame K material from the second chamber of the fluidised bed is contacted with cold air.
Preferably, in the step (1), the heated air enters the first fluidized bed chamber, the second fluidized bed chamber and the third fluidized bed chamber after being subjected to temperature regulation.
Preferably, in step (2), the air temperature in the first chamber of the fluidized bed is 45 ℃ to 60 ℃.
The contact time of the acesulfame potassium tide product and the air is 22-26 min.
The drying weight loss of the acesulfame-K wet product is 4-5.5%.
Preferably, the loss on drying of the acesulfame potassium material passing through the first chamber of the fluidized bed is between 1.2% and 1.5%.
Preferably, in step (3), the air temperature in the second chamber of the fluidized bed is 102 ℃ to 106 ℃.
The contact time of the acesulfame potassium and the air is 15 min-20 min.
Preferably, the drying weight loss of the acesulfame potassium material passing through the second chamber of the fluidized bed is 0.03-0.09%.
Preferably, in step (4), the air temperature in the third chamber of the fluidized bed is 10-30 ℃.
The contact time of the acesulfame potassium and the air is 8 min-10 min.
Preferably, the temperature of the acesulfame K mass cooled in the third chamber of the fluidised bed is in the range of from 20 ℃ to 25 ℃.
In one embodiment, the method further comprises the steps of:
(a) filtering the air to obtain filtered air;
(b) dehumidifying the filtered air to obtain dehumidified air;
(c) heating the dehumidified air to obtain heated air;
preferably, in step (a), the air passes through an air filter 1 to filter dust particles in the air, so as to obtain filtered air, which meets international standard ISO 14644-1: 2015.
preferably, in the step (b), the filtered air passes through an air dehumidifier to obtain dehumidified air, and the requirement of relative humidity 10-25% RH is met at the temperature of 2-7 ℃.
Preferably, in the step (c), the dehumidified air passes through an air heater to obtain heated air, and the heated air meets the technical requirement of 100-120 ℃.
The system and the method for controlling agglomeration in the production process of acesulfame potassium have the following beneficial effects:
according to the invention, the drying temperature, the drying time and the cooling and packaging temperature of the fluidized bed are controlled, so that the drying weight loss of the acesulfame potassium is controlled, the caking phenomenon of the acesulfame potassium can be effectively prevented, the production efficiency is improved, the cost is reduced, and a new thought is provided for solving the key problem of industrial commonality.
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FIG. 1: the invention provides a system schematic diagram suitable for controlling agglomeration in an acesulfame potassium production process.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be understood that the processing equipment or apparatus not specifically identified in the following examples is conventional in the art. Furthermore, it is to be understood that one or more method steps mentioned in the present invention does not exclude that other method steps may also be present before or after the combined steps or that other method steps may also be inserted between these explicitly mentioned steps, unless otherwise indicated; it is also to be understood that a combined connection between one or more devices/apparatus as referred to in the present application does not exclude that further devices/apparatus may be present before or after the combined device/apparatus or that further devices/apparatus may be interposed between two devices/apparatus explicitly referred to, unless otherwise indicated. Moreover, unless otherwise indicated, the numbering of the various method steps is merely a convenient tool for identifying the various method steps, and is not intended to limit the order in which the method steps are arranged or the scope of the invention in which the invention may be practiced, and changes or modifications in the relative relationship may be made without substantially changing the technical content.
A system for controlling agglomeration in an acesulfame k manufacturing process, as shown in fig. 1, comprising:
a fluidized bed first chamber 4 for receiving heated air and contacting acesulfame K tide product from the material inlet with the heated air;
a second fluidized bed chamber 5 for receiving heated air and contacting the acesulfame potassium material from the first fluidized bed chamber 4 with hot air;
a third chamber 6 of the fluidised bed for receiving the cooled air and contacting the acesulfame potassium material from the second chamber 5 of the fluidised bed with cold air;
the first fluidized bed chamber 4, the second fluidized bed chamber 5 and the third fluidized bed chamber 6 are in fluid communication, the first fluidized bed chamber 4 is in material communication with the second fluidized bed chamber 5, and the second fluidized bed chamber 5 is in material communication with the third fluidized bed chamber 6.
In one embodiment, the system further comprises:
the air filter 1 is used for filtering air to obtain filtered air;
an air dehumidifier 2 for dehumidifying the filtered air to obtain dehumidified air;
and the air heater 3 is used for heating the dehumidified air to obtain heated air.
The air filter 1 is in fluid communication with the air dehumidifier 2, the air dehumidifier 2 is in fluid communication with the air heater 3, and the air heater 3 is in fluid communication with the first fluidized bed chamber 4, the second fluidized bed chamber 5, and the third fluidized bed chamber 6, respectively.
In a preferred embodiment, the air is passed through an air filter 1 to filter out airborne dust particles and obtain filtered air, which meets international standard ISO 14644-1: 2015.
in a preferred embodiment, the filtered air passes through an air dehumidifier 2 to obtain dehumidified air, and the relative humidity is 10-25% RH at 2-7 ℃. The air dehumidifier 2 may be a blower.
In a preferred embodiment, the dehumidified air passes through an air heater 3 to obtain heated air, and the heated air meets the technical requirement of 100-120 ℃.
In a preferred embodiment, the air temperature in the first chamber 4 of the fluidized bed is between 45 ℃ and 60 ℃. The contact time of the acesulfame potassium tide product and the air is 22-26 min. The drying weight loss of the acesulfame-K wet product is 4-5.5%.
In a preferred embodiment, the loss on drying of the acesulfame k mass passing through the first chamber 4 of the fluidised bed is in the range of from 1.2% to 1.5%.
In a preferred embodiment, the air temperature in the second chamber 5 of the fluidized bed is between 102 ℃ and 106 ℃. The contact time of the acesulfame potassium and the air is 15 min-20 min.
In a preferred embodiment, the loss on drying of the acesulfame potassium material passing through the second chamber 5 of the fluidized bed is 0.03-0.09%.
In a preferred embodiment, the air temperature in the third chamber 6 of the fluidized bed is between 10 ℃ and 30 ℃. The contact time of the acesulfame potassium and the air is 8 min-10 min.
In a preferred embodiment, the acesulfame-K mass cooled in the third fluidised bed chamber 6 is at a temperature of from 20 ℃ to 25 ℃.
Example 1
The air passes through an air filter 1 to filter dust particles in the air to obtain filtered air, and the filtered air meets the international standard ISO 14644-1: 2015. the filtered air passes through an air dehumidifier 2 to obtain dehumidified air, and the requirements of 10-25% RH of relative humidity are met at the temperature of 2-7 ℃. The dehumidified air passes through an air heater 3 to obtain heated air, and the heated air meets the technical requirement of 100-120 ℃. The heated air enters the first fluidized bed chamber 4, the second fluidized bed chamber 5 and the third fluidized bed chamber 6 after temperature regulation, and the air temperature in the first fluidized bed chamber 4, the second fluidized bed chamber 5 and the third fluidized bed chamber 6 is 60 ℃, 105 ℃ and 20 ℃. The acesulfame potassium tide product with the drying weight loss of 5 percent is continuously and uniformly added on a pore plate of a first chamber 4 of the fluidized bed through a material inlet, and is fully contacted with hot air at 60 ℃ for 22min, and the drying weight loss of the material passing through the first chamber 4 of the fluidized bed is 1.5 percent; the material continuously enters a pore plate of the second chamber 5 of the fluidized bed, fully contacts with hot air at 105 ℃, stays for 20min, and the drying weight loss of the material passing through the second chamber 5 of the fluidized bed is 0.05 percent; continuously feeding the material into the pore plate of the third chamber 6 of the fluidized bed, and fully contacting with cold air at 20 ℃ for 10 min; and (4) feeding the cooled material to a packaging process through a conveying belt at 25 ℃. The storage time is 4 months, and no caking phenomenon occurs.
Example 2
The air passes through an air filter 1 to filter dust particles in the air to obtain filtered air, and the filtered air meets the international standard ISO 14644-1: 2015. the filtered air passes through an air dehumidifier 2 to obtain dehumidified air, and the requirements of 10-25% RH of relative humidity are met at the temperature of 2-7 ℃. The dehumidified air passes through an air heater 3 to obtain heated air, and the heated air meets the technical requirement of 100-120 ℃. The heated air respectively enters the first fluidized bed chamber 4, the second fluidized bed chamber 5 and the third fluidized bed chamber 6 after temperature regulation, and the air temperature in the first fluidized bed chamber 4, the second fluidized bed chamber 5 and the third fluidized bed chamber 6 is 50 ℃, 102 ℃ and 15 ℃. The acesulfame potassium tide product with the drying weight loss of 4.5 percent is continuously and uniformly added on a pore plate of a first chamber 4 of the fluidized bed through a material inlet, and is fully contacted with hot air at 50 ℃, the retention time is 26min, and the drying weight loss of the material passing through the first chamber 4 of the fluidized bed is 1.3 percent; the material continuously enters a pore plate of the second chamber 5 of the fluidized bed, fully contacts with the hot air at 102 ℃, stays for 15min, and the drying weight loss of the material passing through the second chamber 5 of the fluidized bed is 0.03 percent; continuously feeding the material into a pore plate of a third chamber 6 of the fluidized bed, and fully contacting with cold air at 15 ℃ for 8 min; the cooled material is 22 ℃ and enters a packaging process through a conveying belt. The storage time is 4 months, and no caking phenomenon occurs.
Example 3
The air passes through an air filter 1 to filter dust particles in the air to obtain filtered air, and the filtered air meets the international standard ISO 14644-1: 2015. the filtered air passes through an air dehumidifier 2 to obtain dehumidified air, and the requirements of 10-25% RH of relative humidity are met at the temperature of 2-7 ℃. The dehumidified air passes through an air heater 3 to obtain heated air, and the heated air meets the technical requirement of 100-120 ℃. The heated air enters the first fluidized bed chamber 4, the second fluidized bed chamber 5 and the third fluidized bed chamber 6 after temperature regulation, and the air temperature in the first fluidized bed chamber 4, the second fluidized bed chamber 5 and the third fluidized bed chamber 6 is 55 ℃, 106 ℃ and 10 ℃. The acesulfame potassium tide product with the drying weight loss of 5.5 percent is continuously and uniformly added on a pore plate of a first chamber 4 of the fluidized bed through a material inlet, and is fully contacted with hot air with the temperature of 55 ℃, the retention time is 25min, and the drying weight loss of the material passing through the first chamber 4 of the fluidized bed is 1.4 percent; the material continuously enters a pore plate of the second chamber 5 of the fluidized bed, fully contacts with hot air at 106 ℃, stays for 18min, and the drying weight loss of the material passing through the second chamber 5 of the fluidized bed is 0.06%; continuously feeding the material into the pore plate of the third chamber 6 of the fluidized bed, and fully contacting with cold air at 10 ℃ for 8 min; the cooled material is 20 ℃ and enters a packaging process through a conveying belt. The storage time is 4 months, and no caking phenomenon occurs.
Example 4
The air passes through an air filter 1 to filter dust particles in the air to obtain filtered air, and the filtered air meets the international standard ISO 14644-1: 2015. the filtered air passes through an air dehumidifier 2 to obtain dehumidified air, and the requirements of 10-25% RH of relative humidity are met at the temperature of 2-7 ℃. The dehumidified air passes through an air heater 3 to obtain heated air, and the heated air meets the technical requirement of 100-120 ℃. The heated air respectively enters the first fluidized bed chamber 4, the second fluidized bed chamber 5 and the third fluidized bed chamber 6 after temperature regulation, and the air temperature in the first fluidized bed chamber 4, the second fluidized bed chamber 5 and the third fluidized bed chamber 6 is 45 ℃, 104 ℃ and 20 ℃. The acesulfame potassium tide product with the drying weight loss of 4 percent is continuously and uniformly added on a pore plate of a first chamber 4 of the fluidized bed through a material inlet, and is fully contacted with hot air at the temperature of 45 ℃, the retention time is 26min, and the drying weight loss of the material passing through the first chamber 4 of the fluidized bed is 1.2 percent; the material continuously enters a pore plate of the second chamber 5 of the fluidized bed, fully contacts with the hot air at 104 ℃, stays for 15min, and the drying weight loss of the material passing through the second chamber 5 of the fluidized bed is 0.09%; continuously feeding the material into the pore plate of the third chamber 6 of the fluidized bed, and fully contacting with cold air at 20 ℃ for 10 min; and (4) feeding the cooled material to a packaging process through a conveying belt at 25 ℃. The storage time is 4 months, and no caking phenomenon occurs.
Comparative example 1
The air passes through an air filter 1 to filter dust particles in the air to obtain filtered air, and the filtered air meets the international standard ISO 14644-1: 2015. the filtered air passes through an air dehumidifier 2 to obtain dehumidified air, and the requirements of 10-25% RH of relative humidity are met at the temperature of 2-7 ℃. The dehumidified air passes through an air heater 3 to obtain heated air, and the heated air meets the technical requirement of 100-120 ℃. The heated air enters the first fluidized bed chamber 4, the second fluidized bed chamber 5 and the third fluidized bed chamber 6 after temperature regulation, and the air temperature in the first fluidized bed chamber 4, the second fluidized bed chamber 5 and the third fluidized bed chamber 6 is respectively 30 ℃, 90 ℃ and 5 ℃. The acesulfame potassium tide product with the drying weight loss of 4 percent is continuously and uniformly added on a pore plate of a first chamber 4 of the fluidized bed through a material inlet, and is fully contacted with hot air at the temperature of 5 ℃, the retention time is 26min, and the drying weight loss of the material passing through the first chamber 4 of the fluidized bed is 2.2 percent; the material continuously enters a pore plate of the second chamber 5 of the fluidized bed, fully contacts with hot air at 90 ℃, stays for 15min, and the drying weight loss of the material passing through the second chamber 5 of the fluidized bed is 1.2%; continuously feeding the material into a pore plate of a third chamber 6 of the fluidized bed, and fully contacting with cold air at 5 ℃ for 10 min; the cooled material is 15 ℃ and enters a packaging process through a conveying belt. After 7 days of storage, caking began to occur.
Comparative example 2
The air passes through an air filter 1 to filter dust particles in the air to obtain filtered air, and the filtered air meets the international standard ISO 14644-1: 2015. the filtered air passes through an air dehumidifier 2 to obtain dehumidified air, and the requirements of 10-25% RH of relative humidity are met at the temperature of 2-7 ℃. The dehumidified air passes through an air heater 3 to obtain heated air, and the heated air meets the technical requirement of 100-120 ℃. The heated air respectively enters the first fluidized bed chamber 4, the second fluidized bed chamber 5 and the third fluidized bed chamber 6 after temperature regulation, and the air temperature in the first fluidized bed chamber 4, the second fluidized bed chamber 5 and the third fluidized bed chamber 6 is 45 ℃, 104 ℃ and 40 ℃. The acesulfame potassium tide product with the drying weight loss of 4 percent is continuously and uniformly added on a pore plate of a first chamber 4 of the fluidized bed through a material inlet, and is fully contacted with hot air at the temperature of 45 ℃, the retention time is 26min, and the drying weight loss of the material passing through the first chamber 4 of the fluidized bed is 1.2 percent; the material continuously enters a pore plate of the second chamber 5 of the fluidized bed, fully contacts with the hot air at 104 ℃, stays for 15min, and the drying weight loss of the material passing through the second chamber 5 of the fluidized bed is 0.09%; continuously feeding the material into the pore plate of the third chamber 6 of the fluidized bed, and fully contacting with cold air at 40 ℃ for 10 min; and (4) feeding the cooled material into a packaging process through a conveying belt at 45 ℃. Caking began to occur after 2 weeks storage.
In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.
The above examples are intended to illustrate the disclosed embodiments of the invention and are not to be construed as limiting the invention. In addition, various modifications of the methods and compositions set forth herein, as well as variations of the methods and compositions of the present invention, will be apparent to those skilled in the art without departing from the scope and spirit of the invention. While the invention has been specifically described in connection with various specific preferred embodiments thereof, it should be understood that the invention should not be unduly limited to such specific embodiments. Indeed, various modifications of the above-described embodiments which are obvious to those skilled in the art to which the invention pertains are intended to be covered by the scope of the present invention.
Claims (11)
1. A system for controlling agglomeration during acesulfame k production, comprising:
a fluidized bed first chamber for receiving heated air and contacting acesulfame potassium tide product from the material inlet with the heated air;
a fluidized bed second chamber for receiving the heated air and contacting the acesulfame potassium material from the fluidized bed first chamber with the heated air;
a third chamber of the fluidized bed for receiving the cooled air and contacting the acesulfame potassium material from the second chamber of the fluidized bed with cold air;
the first fluidized bed chamber, the second fluidized bed chamber and the third fluidized bed chamber are in fluid communication, the first fluidized bed chamber is in material communication with the second fluidized bed chamber, and the second fluidized bed chamber is in material communication with the third fluidized bed chamber.
2. The system of claim 1, further comprising any one or more of the following features: (1) in the first chamber of the fluidized bed, the air temperature is 45-60 ℃; (2) the contact time of the acesulfame potassium tide product and the air is 22-26 min.
3. The system of claim 1, further comprising any one or more of the following features: (1) in the second chamber of the fluidized bed, the air temperature is 102-106 ℃; (2) the contact time of the acesulfame potassium material and the air is 15 min-20 min.
4. The system of claim 1, further comprising any one or more of the following features: (1) in the third chamber of the fluidized bed, the air temperature is 10-30 ℃; (2) the contact time of the acesulfame potassium material and the air is 8 min-10 min.
5. The system of any one of claims 1-4, further comprising any one or more of the following features: (1) the drying weight loss of the acesulfame potassium material passing through the first chamber of the fluidized bed is 1.2 to 1.5 percent; (2) the drying weight loss of the acesulfame potassium material passing through the second chamber of the fluidized bed is 0.03-0.09%; (3) the temperature of the acesulfame potassium material cooled by the third chamber of the fluidized bed is 20-25 ℃.
6. Use of a system according to any one of claims 1 to 5 to prevent agglomeration of acesulfame potassium.
7. A method suitable for preventing acesulfame k agglomeration, comprising the steps of: (1) respectively introducing the heated air into the first fluidized bed chamber, the second fluidized bed chamber and the third fluidized bed chamber; (2) contacting the acesulfame-K tide product with hot air in the fluidized bed first chamber; (3) contacting the acesulfame potassium material from the first chamber of the fluidised bed with hot air in the second chamber of the fluidised bed; (4) in the third chamber of the fluidised bed, the acesulfame K material from the second chamber of the fluidised bed is contacted with cold air.
8. The method of claim 7, further comprising any one or more of the following features: (1) in the step (2), the air temperature in the first chamber of the fluidized bed is 45-60 ℃; (2) in the step (2), the contact time of the acesulfame potassium tide product and the air is 22-26 min.
9. The method of claim 7, further comprising any one or more of the following features: (1) in the step (3), the air temperature in the second chamber of the fluidized bed is 102-106 ℃; (2) in the step (3), the contact time of the acesulfame potassium material and the air is 15-20 min.
10. The method of claim 7, further comprising any one or more of the following features: (1) in the step (4), in the third chamber of the fluidized bed, the air temperature is 10-30 ℃; (2) in the step (4), the contact time of the acesulfame potassium material and the air is 8-10 min.
11. The method according to any one of claims 7-10, further comprising any one or more of the following features: (1) the drying weight loss of the acesulfame potassium material passing through the first chamber of the fluidized bed is 1.2 to 1.5 percent; (2) the drying weight loss of the acesulfame potassium material passing through the second chamber of the fluidized bed is 0.03-0.09%; (3) the temperature of the acesulfame potassium material cooled by the third chamber of the fluidized bed is 20-25 ℃.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207351079U (en) * | 2017-09-12 | 2018-05-11 | 中国科学院青海盐湖研究所 | One kind fluidisation dehydration device |
| CN108332515A (en) * | 2018-01-13 | 2018-07-27 | 安徽金禾实业股份有限公司 | A method of utilizing microwave drying acesulfame potassium |
| CN112393530A (en) * | 2020-11-17 | 2021-02-23 | 浙江工业大学 | Drying process and equipment suitable for materials with large particle size difference and high requirement on uniformity of moisture content of products |
| CN112902557A (en) * | 2021-02-27 | 2021-06-04 | 江苏宇通干燥工程有限公司 | Environment-friendly continuous boiling drying unit and working method thereof |
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- 2021-06-30 CN CN202110739577.4A patent/CN113623946A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207351079U (en) * | 2017-09-12 | 2018-05-11 | 中国科学院青海盐湖研究所 | One kind fluidisation dehydration device |
| CN108332515A (en) * | 2018-01-13 | 2018-07-27 | 安徽金禾实业股份有限公司 | A method of utilizing microwave drying acesulfame potassium |
| CN112393530A (en) * | 2020-11-17 | 2021-02-23 | 浙江工业大学 | Drying process and equipment suitable for materials with large particle size difference and high requirement on uniformity of moisture content of products |
| CN112902557A (en) * | 2021-02-27 | 2021-06-04 | 江苏宇通干燥工程有限公司 | Environment-friendly continuous boiling drying unit and working method thereof |
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