Double-package spray drying system for vitamin production

Abstract

The utility model discloses a double-package spray drying system for vitamin production, which comprises a centrifugal spray main tower, a package material feeding unit, a hot air unit I, a vertical fluidized bed unit, a fluidized bed material receiving unit, a vertical bed cyclone dust removal unit and a main tower cyclone dust removal unit, a core material feeding end of a centrifugal nozzle of the centrifugal spraying main tower is connected with a core material feeding pump, an air inlet end of the centrifugal spraying main tower is communicated with an air outlet end of a hot air unit I, a packing material feeding end of the centrifugal spraying main tower is communicated with a discharging end of a packing material feeding unit, and an air exhaust end of the centrifugal spraying main tower is communicated with an air inlet end of a main tower cyclone dust removal unit. The discharge end of the centrifugal spray main tower is communicated with the feed end I of the vertical fluidized bed unit, the discharge end of the vertical fluidized bed unit is communicated with the boiling bed material receiving unit, and the exhaust end of the vertical fluidized bed unit is communicated with the air inlet end of the vertical bed cyclone dust removal unit. According to the utility model, vitamin microencapsulation production is realized through multiple times of drying, and raw materials are fully utilized through step-by-step recovery.

Description

Technical Field

[0001] The utility model belongs to the technical field of spray drying, in particular to a double-bag spray drying system for vitamin production. Background Art

[0002] The core of spray-drying microencapsulation technology lies in encapsulating the core material within a tiny polymer shell, which is then solidified through the spray drying process to form tiny, stable particles. During the spray drying stage, a mixture of the core material and the packaging (wall) material is atomized under high pressure into countless tiny droplets. These droplets are rapidly heated by hot air, and surface moisture evaporates rapidly, forming a solid polymer film, which serves as the microcapsule shell. As moisture is continuously removed, the droplets gradually condense and eventually solidify into tiny spherical particles, completing the transition from liquid to solid.

[0003] As people's pursuit of health and quality of life continues to improve, market demand for nutritional supplements such as vitamins continues to grow. However, during the vitamin production and drying process, some vitamins have poor thermal stability, resulting in low drying efficiency. Microencapsulation technology, however, can protect the activity and stability of core substances like vitamins, preventing them from degradation or loss of efficacy due to environmental influences such as light, heat, and humidity. Therefore, as a key means of improving product performance and stability, microencapsulation technology is increasingly being used across various vitamin production sectors. Utility Model Content

[0004] In order to realize the production of vitamin microencapsulation, the utility model discloses a double-bag spray drying system for vitamin production, which not only realizes the production of vitamin microencapsulation through multiple drying processes, but also fully utilizes the raw materials through step-by-step recovery.

[0005] The specific technical solutions of the utility model are as follows:

[0006] A double-bag spray drying system for vitamin production comprises a centrifugal spray main tower, a packaging material feeding unit, a hot air unit I, a vertical fluidized bed unit, a fluidized bed receiving unit, a vertical bed cyclone dust removal unit and a main tower cyclone dust removal unit, wherein the core material feeding end of the centrifugal nozzle of the centrifugal spray main tower is connected to a core material feeding pump, the air inlet end of the centrifugal spray main tower is connected to the air outlet end of the hot air unit I, the packaging material feeding end of the centrifugal spray main tower is connected to the discharge end of the packaging material feeding unit, the exhaust end of the centrifugal spray main tower is connected to the air inlet end of the main tower cyclone dust removal unit, the discharge end of the centrifugal spray main tower is connected to the feed end I of the vertical fluidized bed unit, the discharge end of the vertical fluidized bed unit is connected to the fluidized bed receiving unit, and the exhaust end of the vertical fluidized bed unit is connected to the air inlet end of the vertical bed cyclone dust removal unit.

[0007] Preferably, the packaging material feeding unit includes a bag opening station, a feeding air pump, a feeding bin, a return air pump and a hot air unit II, wherein the feeding port of the bag opening station is connected to the feed end of the feeding bin through the feeding air pump, and the hot air unit II transports the packaging material at the outlet end of the feeding bin to the centrifugal spray main tower through the return air pump.

[0008] Preferably, the vertical bed cyclone dust collector unit includes a vertical bed bag dust collector and a vertical bed cyclone dust collector, the air inlet end of the vertical bed cyclone dust collector is connected to the exhaust end of the vertical fluidized bed unit, the exhaust end of the vertical bed cyclone dust collector is connected to the air inlet end of the vertical bed bag dust collector, the discharge end of the vertical bed cyclone dust collector is connected to the feed end of the boiling bed collecting unit, and the discharge end of the vertical bed bag dust collector is connected to the feed end of the feeding bin via a material recovery air pump.

[0009] Preferably, the main tower cyclone dust removal unit includes a main tower bag dust collector and a main tower cyclone dust collector, the air inlet end of the main tower cyclone dust collector is connected to the exhaust end of the centrifugal spray main tower, the exhaust end of the main tower cyclone dust collector is connected to the air inlet end of the main tower bag dust collector, the discharge end of the main tower cyclone dust collector is connected to the feed end of the boiling bed collecting unit, and the discharge end of the main tower bag dust collector is connected to the feed end of the feeding bin via a material recovery air pump.

[0010] Preferably, the fluidized bed collecting unit includes a fluidized bed, a fluidized bed draft fan, a hot air unit III, a vibrating screen and a collection bin, wherein the feed end of the fluidized bed is connected to the discharge ends of the vertical fluidized bed unit, the vertical bed cyclone dust removal unit and the main tower cyclone dust removal unit respectively, the fluidized bed draft fan is installed at the exhaust end of the fluidized bed, the outlet end of the hot air unit III is connected to the air inlet of the fluidized bed, the discharge end of the fluidized bed is connected to the feed end of the vibrating screen, and the discharge end of the vibrating screen is connected to the collection bin.

[0011] Preferably, the vertical fluidized bed unit includes a vertical fluidized bed and a hot air unit IV, the air outlet end of the hot air unit IV is connected to the air inlet end of the vertical fluidized bed, the feed end of the vertical fluidized bed is connected to the discharge end of the centrifugal spray main tower, the discharge end of the vertical fluidized bed is connected to the feed end of the boiling bed receiving unit, and the exhaust end of the vertical fluidized bed is connected to the air inlet end of the vertical bed cyclone dust removal unit.

[0012] Preferably, the hot air unit I, hot air unit II, hot air unit III and hot air unit IV all include a blower, a condenser and a heater, and the air is driven by the blower to pass through the condenser and the heater in sequence to obtain dry hot air.

[0013] Beneficial effects: The utility model discloses a double-bag spray drying system for vitamin production, which has the following advantages compared with the existing technology:

[0014] (1) In the present invention, the microencapsulation production of vitamins is achieved through the centrifugal spray main tower. At the same time, the vertical fluidized bed unit and the boiling bed collecting unit further ensure that the microcapsules reach the required degree of dryness in a short time, thereby enhancing the shell structure of the microcapsules, making them more solid and stable, thereby better protecting the core vitamins from adverse factors such as oxidation and hydrolysis.

[0015] (2) In the present invention, the utilization rate of materials is improved by collecting the cyclone materials and bag materials in the vertical bed cyclone dust removal unit and the main tower cyclone dust removal unit in steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall system structure of this embodiment 1.

[0017] In the figure: centrifugal spray main tower 1, centrifugal nozzle 1-1, core material feeding end 1-2, core material feeding pump 1-3, packaging material feeding end 1-4, packaging material feeding unit 2, bag opening station 2-1, feeding air pump 2-2, feeding bin 2-3, return air pump 2-4, hot air unit II 2-5, hot air unit I 3, blower 3-1, condenser 3-2, heater 3-3, vertical fluidized bed unit 4, vertical fluidized bed 4-1, hot air unit IV 4-2, fluidized bed collecting unit 5, fluidized bed 5-1, fluidized bed induced draft fan 5-2, hot air unit III 5-3, vibrating screen 5-4, collecting bin 5-5, vertical bed cyclone dust removal unit 6, vertical bed bag dust collector 6-1, vertical bed cyclone dust collector 6-2, main tower cyclone dust removal unit 7, main tower bag dust collector 7-1, main tower cyclone dust collector 7-2, material recovery air pump 8. DETAILED DESCRIPTION

[0018] The following are some improvements and modifications to the present invention in conjunction with the accompanying drawings, and these improvements and modifications should also be considered as within the scope of protection of the present invention. Example 1

[0019] like Figure 1As shown, a double-bag spray drying system for vitamin production includes a centrifugal spray main tower 1, a packaging material feeding unit 2, a hot air unit I3, a vertical fluidized bed unit 4, a boiling bed receiving unit 5, a vertical bed cyclone dust removal unit 6 and a main tower cyclone dust removal unit 7, wherein the core material feeding end 1-2 of the centrifugal nozzle 1-1 of the centrifugal spray main tower 1 is connected to the core material feeding pump 1-3, the air inlet end of the centrifugal spray main tower 1 is connected to the air outlet end of the hot air unit I3, and the centrifugal The packaging material feed end 1-4 of the spray main tower 1 is connected to the discharge end of the packaging material feeding unit 2, the exhaust end of the centrifugal spray main tower 1 is connected to the air inlet end of the main tower cyclone dust removal unit 7, the discharge end of the centrifugal spray main tower 1 is connected to the feed end I of the vertical fluidized bed unit 4, the discharge end of the vertical fluidized bed unit 4 is connected to the feed end of the boiling bed receiving unit 5, and the exhaust end of the vertical fluidized bed unit 4 is connected to the air inlet end of the vertical bed cyclone dust removal unit 6.

[0020] Preferably, the packaging material feeding unit 2 includes a bag opening station 2-1, a feeding air pump 2-2, a feeding bin 2-3, a return air pump 2-4 and a hot air unit II 2-5, wherein the feeding port of the bag opening station 2-1 is connected to the feeding end of the feeding bin 2-3 through the feeding air pump 2-2, and the hot air unit II 2-5 transports the packaging material at the outlet end of the feeding bin 2-3 to the packaging material feeding end 1-4 of the centrifugal spray main tower 1 through the return air pump 2-4.

[0021] In this embodiment 1, in order to prevent the packaging material from agglomerating and improve the fluidity of the packaging material, a stirring device is generally provided in the feeding bin 2-3.

[0022] In this embodiment 1, the vertical bed cyclone dust collector unit 6 includes a vertical bed bag dust collector 6-1 and a vertical bed cyclone dust collector 6-2. The air inlet end of the vertical bed cyclone dust collector 6-2 is connected to the exhaust end of the vertical fluidized bed unit 4, the exhaust end of the vertical bed cyclone dust collector 6-2 is connected to the air inlet end of the vertical bed bag dust collector 6-1, the discharge end of the vertical bed cyclone dust collector 6-2 is connected to the feed end of the boiling bed collecting unit 5, and the discharge end of the vertical bed bag dust collector 6-1 is connected to the feed end of the feeding bin 2-3 through the material recovery air pump 8.

[0023] In this embodiment 1, the main tower cyclone dust collector unit 7 includes a main tower bag dust collector 7-1 and a main tower cyclone dust collector 7-2. The air inlet end of the main tower cyclone dust collector 7-2 is connected to the exhaust end of the centrifugal spray main tower 1, and the exhaust end of the main tower cyclone dust collector 7-2 is connected to the air inlet end of the main tower bag dust collector 7-1. The discharge end of the main tower cyclone dust collector 7-2 is connected to the feed end of the boiling bed collecting unit 5, and the discharge end of the main tower bag dust collector 7-1 is connected to the feed end of the feeding bin 2-3 through the material recovery air pump 8.

[0024] In this embodiment 1, the fluidized bed collecting unit 5 includes a fluidized bed 5-1, a fluidized bed draft fan 5-2, a hot air unit III 5-3, a vibrating screen 5-4 and a collection bin 5-5, wherein the feed end of the fluidized bed 5-1 is connected to the discharge ends of the vertical fluidized bed unit 4, the vertical bed cyclone dust removal unit 6 and the main tower cyclone dust removal unit 7 respectively, the fluidized bed draft fan 5-2 is installed at the exhaust end of the fluidized bed 5-1, the outlet end of the hot air unit III 5-3 is connected to the air inlet of the fluidized bed 5-1, the discharge end of the fluidized bed 5-1 is connected to the feed end of the vibrating screen 5-4, the discharge end of the vibrating screen 5-4 is connected to the collection bin 5-5, and the collection bin 5-5 is used to collect the dried finished materials.

[0025] In this embodiment 1, the vertical fluidized bed unit 4 includes a vertical fluidized bed 4-1 and a hot air unit IV4-2, the air outlet end of the hot air unit IV4-2 is connected to the air inlet end of the vertical fluidized bed 4-1, the feed end of the vertical fluidized bed 4-1 is connected to the discharge end of the centrifugal spray main tower 1, the discharge end of the vertical fluidized bed 4-1 is connected to the feed end of the boiling bed collecting unit 5, and the exhaust end of the vertical fluidized bed 4-1 is connected to the air inlet end of the vertical bed cyclone dust removal unit 6.

[0026] In Example 1, the hot air unit I3, hot air unit II2-5, hot air unit III5-3, and hot air unit IV4-2 all include a blower 3-1, a condenser 3-2, and a heater 3-3. Air is driven by the blower 3-1 and sequentially passes through the condenser 3-2 and heater 3-3 to produce dry hot air. To precisely control the drying temperature, temperature sensors can be added to hot air unit I3, hot air unit II2-5, hot air unit III5-3, and hot air unit IV4-2 to monitor the drying air temperature in real time.

[0027] In the present invention, the air finally discharged from the fluidized bed collecting unit 5, the vertical bed cyclone dust removal unit 6 and the main tower cyclone dust removal unit 7 can be further dust-removed by existing gas dust removal devices such as water film dust removal devices and then discharged. This is a conventional technical means and is therefore not described in detail.

[0028] The working principle of this utility model is as follows:

[0029] Vitamin microencapsulation drying process: The vitamin core material enters the centrifugal spray nozzle 1-1 in the centrifugal spray main tower 1 via the core material feeding pump 1-3 for atomization. Simultaneously, the packaging material (e.g., starch) is added from the bag opening station 2-1 via the feeding air pump 2-2 to the feeding hopper 2-3. The packaging material at the bottom discharge end of the feeding hopper 2-3 is then fed into the centrifugal spray main tower 1 via the return air pump 2-4, followed by dry hot air. The atomized mixture containing the core and packaging materials in the centrifugal spray main tower 1 is rapidly heated by the hot air, rapidly evaporating surface moisture and forming the microcapsule shell, encapsulating the core material. The spray-dried microencapsulated material then undergoes further fluidized drying in the vertical fluidized bed unit 4 and the ebullient bed 5-1 before passing through a vibrating screen and entering the collection hopper 5-5 for storage.

[0030] Recovery of Microencapsulated Vitamins: Dry gases discharged from the centrifugal spray main tower 1 and the vertical fluidized bed unit 4 enter the main tower cyclone 7-2 and vertical bed cyclone 6-2, respectively, for cyclone dust removal. Because these dry gases contain some microencapsulated vitamins, after cyclone treatment, some of the microencapsulated vitamins are deposited at the bottom discharge ports of the main tower cyclone 7-2 and vertical bed cyclone 6-2. Air then carries them to the fluidized bed collection unit 5 for collection.

[0031] Packaging Material Recovery: The dry gases discharged from the centrifugal spray main tower 1 and the vertical fluidized bed unit 4 undergo cyclone dust removal in the main tower cyclone 7-2 and vertical bed cyclone 6-2, respectively. They then pass through the main tower bag filter 7-1 and vertical bed bag filter 6-1 for bag-type dust removal. Since these dry gases still contain some packaging material (starch) and a small amount of microencapsulated vitamins after the cyclone dust removal, some of the packaging material (starch) is deposited in the bags of the main tower bag filter 7-1 and vertical bed bag filter 6-1 after bag-type dust removal. This material is then carried by air into the packaging material feeding unit 2 for recycling.

[0032] The above is only an explanation of the present invention and is a preferred embodiment of the present invention. It should be noted that those skilled in the art may make several improvements and modifications without departing from the present invention, and such improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A double-pack spray drying system for vitamin production, characterized in that: It includes a centrifugal spray main tower, a packaging material feeding unit, a hot air unit I, a vertical fluidized bed unit, a boiling bed receiving unit, a vertical bed cyclone dust removal unit and a main tower cyclone dust removal unit, wherein the core material feeding end of the centrifugal nozzle of the centrifugal spray main tower is connected to the core material feeding pump, the air inlet end of the centrifugal spray main tower is connected to the air outlet end of the hot air unit I, the packaging material feeding end of the centrifugal spray main tower is connected to the discharge end of the packaging material feeding unit, the exhaust end of the centrifugal spray main tower is connected to the air inlet end of the main tower cyclone dust removal unit, the discharge end of the centrifugal spray main tower is connected to the feed end I of the vertical fluidized bed unit, the discharge end of the vertical fluidized bed unit is connected to the boiling bed receiving unit, and the exhaust end of the vertical fluidized bed unit is connected to the air inlet end of the vertical bed cyclone dust removal unit.

2. The double-pack spray drying system for vitamin production according to claim 1, characterized in that: The packaging material feeding unit includes a bag opening station, a feeding air pump, a feeding bin, a return air pump and a hot air unit II, wherein the feeding port of the bag opening station is connected to the feeding end of the feeding bin via the feeding air pump, and the hot air unit II transports the packaging material at the outlet end of the feeding bin to the centrifugal spray main tower via the return air pump.

3. The double-pack spray drying system for vitamin production according to claim 2, characterized in that: The vertical bed cyclone dust collector unit includes a vertical bed bag dust collector and a vertical bed cyclone dust collector. The air inlet end of the vertical bed cyclone dust collector is connected to the exhaust end of the vertical fluidized bed unit, the exhaust end of the vertical bed cyclone dust collector is connected to the air inlet end of the vertical bed bag dust collector, the discharge end of the vertical bed cyclone dust collector is connected to the feed end of the boiling bed collecting unit, and the discharge end of the vertical bed bag dust collector is connected to the feed end of the feeding bin via a material recovery air pump.

4. The double-pack spray drying system for vitamin production according to claim 2, characterized in that: The main tower cyclone dust removal unit includes a main tower bag dust collector and a main tower cyclone dust collector. The air inlet end of the main tower cyclone dust collector is connected to the exhaust end of the centrifugal spray main tower, the exhaust end of the main tower cyclone dust collector is connected to the air inlet end of the main tower bag dust collector, the discharge end of the main tower cyclone dust collector is connected to the feed end of the boiling bed collecting unit, and the discharge end of the main tower bag dust collector is connected to the feed end of the feeding bin via a material recovery air pump.

5. The double-pack spray drying system for vitamin production according to claim 2, characterized in that: The fluidized bed collecting unit includes a fluidized bed, a fluidized bed induced draft fan, a hot air unit III, a vibrating screen and a collection bin, wherein the feed end of the fluidized bed is connected to the discharge ends of the vertical fluidized bed unit, the vertical bed cyclone dust removal unit and the main tower cyclone dust removal unit respectively, the fluidized bed induced draft fan is installed at the exhaust end of the fluidized bed, the outlet end of the hot air unit III is connected to the air inlet of the fluidized bed, the discharge end of the fluidized bed is connected to the feed end of the vibrating screen, and the discharge end of the vibrating screen is connected to the collection bin.

6. The double-pack spray drying system for vitamin production according to claim 5, characterized in that: The vertical fluidized bed unit includes a vertical fluidized bed and a hot air unit IV. The air outlet end of the hot air unit IV is connected to the air inlet end of the vertical fluidized bed, the feed end of the vertical fluidized bed is connected to the discharge end of the centrifugal spray main tower, the discharge end of the vertical fluidized bed is connected to the feed end of the boiling bed collecting unit, and the exhaust end of the vertical fluidized bed is connected to the air inlet end of the vertical bed cyclone dust removal unit.

7. The double-pack spray drying system for vitamin production according to claim 6, characterized in that: The hot air unit I, hot air unit II, hot air unit III and hot air unit IV all include a blower, a condenser and a heater. The air is driven by the blower and passes through the condenser and the heater in sequence to obtain dry hot air.

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