Drying equipment for low-temperature centrifugal spraying

Abstract

The invention relates to the technical field of centrifugal spray drying, in particular to low-temperature centrifugal spray drying equipment, which comprises a drying assembly, a constant-temperature and constant-humidity air dryer, a second filter, an air supply fan, a heater, a high-efficiency filter, a spray tower, a double-group cyclone and a material collector, the double-group cyclone further comprises a cooling module, the constant-temperature and constant-humidity air dryer comprises a first filter, a first treatment area, a second treatment area and a treatment fan, and the first treatment area comprises a first-stage rotating wheel. Inlet air is dehumidified and dried through the constant-temperature and constant-humidity air dryer, in this way, the drying inlet air temperature is reduced, one part of temperature is used for drying air, the other part of temperature can be used for drying products, and therefore the constant-temperature and constant-humidity air dryer is adjusted according to different seasons and different air temperatures and humidity; therefore, the pharmacology of the dried raw materials is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of centrifugal spray drying, in particular to low-temperature centrifugal spray drying equipment. Background Art

[0002] Among the current API manufacturers in my country, most manufacturers use freeze drying to dry products that are heat-sensitive and hygroscopic. However, freeze drying has high energy consumption and low production capacity, which increases production costs. With the continuous updating of technology, a very small number of companies use centrifugal spray drying.

[0003] Existing centrifugal spray drying has achieved increased production capacity and reduced production costs, but the centrifugal spray drying temperature is high. The temperature entering the spray tower is above 150°C, and the product outlet temperature is above 100°C. The product cannot be dried below this temperature. Such high temperatures will have a certain impact on the appearance, pharmacology, and stability of the product, thereby affecting the quality of the product. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention is proposed.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a drying component includes a constant temperature and humidity air dryer, a second filter, an air supply fan, and a heater.

[0006] As a preferred solution of the low-temperature centrifugal spray drying equipment of the present invention, the drying component also includes a high-efficiency filter, a spray tower, a double set of cyclones, and a receiver.

[0007] As a preferred solution of the low-temperature centrifugal spray drying equipment of the present invention, the double-group cyclone also includes a cooling module.

[0008] As a preferred solution of the low-temperature centrifugal spray drying equipment of the present invention, the constant temperature and humidity air dryer includes a first filter, a first processing area, a second processing area, and a processing fan.

[0009] As a preferred embodiment of the low-temperature centrifugal spray drying equipment of the present invention, the first processing zone includes a first-stage rotor.

[0010] As a preferred embodiment of the low-temperature centrifugal spray drying equipment of the present invention, the second processing zone includes a secondary rotor.

[0011] As a preferred solution of the low-temperature centrifugal spray drying equipment of the present invention, the secondary rotor includes a first regeneration electric heater, a second regeneration zone, a second regeneration electric heater, a first regeneration zone, and a regeneration fan.

[0012] As a preferred solution of the low-temperature centrifugal spray drying equipment of the present invention, the first-stage rotor is arranged inside the first processing zone.

[0013] As a preferred solution of the low-temperature centrifugal spray drying equipment of the present invention, the secondary rotor is arranged inside the second processing zone.

[0014] The beneficial effects of the present invention are as follows: the intake air is dehumidified and dried by a constant temperature and humidity air dryer, thereby reducing the dry intake air temperature, so that a part of the temperature is used for drying the air and the other part is used for drying the product. Thus, the constant temperature and humidity air dryer is adjusted according to the different air temperatures and humidity in different seasons, thereby ensuring the pharmacology of the dried raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0016] Figure 1 It is a diagram of the centrifugal spray drying system in the present invention.

[0017] Figure 2 This is a system diagram of the constant temperature and humidity air dryer in the present invention.

[0018] Figure numbers: 100, drying component; 101, constant temperature and humidity air dryer; 101a, first filter; 101b, first treatment zone; 101b-1, primary rotor; 101b-2, first regeneration zone; 101c, second treatment zone; 101c-1, secondary rotor; 101c-2, second regeneration zone; 101d, treatment fan; 101e, first regeneration electric heating; 101f, second regeneration electric heating; 101g, regeneration fan; 102, second filter; 103, air supply fan; 104, heater; 105, high-efficiency filter; 106, spray tower; 107, double cyclone; 107a, cooling module; 108, receiver. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0022] Example 1, reference Figure 1 to Figure 2 , which is the first embodiment of the present invention, provides a low-temperature centrifugal spray drying device, which includes a drying component 100, including a constant temperature and humidity air dryer 101, a second filter 102, an air supply fan 103, and a heater 104.

[0023] Usage process: The intake air is dehumidified and dried by the constant temperature and humidity air dryer 101, so as to reduce the dry intake air temperature, so that part of the temperature is used for drying the air and the other part can be used for drying the product. Therefore, the constant temperature and humidity air dryer 101 is adjusted according to the different air temperatures and humidity in different seasons, thereby ensuring the pharmacology of the dried raw materials.

[0024] Example 2, reference Figure 1 to Figure 2 , which is the second embodiment of the present invention, provides a low-temperature centrifugal spray drying device, which includes a drying component 100 and also includes a high-efficiency filter 105, a spray tower 106, a double set of cyclones 107, and a receiver 108.

[0025] The double cyclone set 107 further includes a cooling module 107a.

[0026] Among them, by adding a cooling module 107a to the spray tower 106 and adding an adjustable constant temperature and humidity air dryer 101 in front of the double cyclone 107, the purpose of adding the cooling module 107a is to prevent the hot-melt product from melting due to the excessively high temperature in the spray tower 106, and the purpose of adding the adjustable constant temperature and humidity air dryer 101 is to ensure that the product can be quickly cooled down again after leaving the spray tower 106, thereby ensuring product quality.

[0027] Usage process: The incoming air is first dried and dehumidified by the constant temperature and humidity air dryer 101, and then enters the heater 104 in the system, so that the incoming air temperature can be reduced. After passing through the heat exchanger, the temperature drops sharply and becomes cold air. The excess moisture is precipitated by the dew point difference principle. The cold air is separated into steam and water in the steam-water separator, and the moisture in the air condenses into droplets, which are collected by the steam-water separator. The original air becomes cold air with low water content and continues to enter the spray tower 106. Before entering the spray tower 106, the cold dry gas is heated to become unsaturated gas, which increases the water carrying capacity of the gas. During spray drying, the unsaturated gas will carry the moisture away, thereby achieving low-temperature drying.

[0028] Example 3, reference Figure 1 to Figure 2 , which is the third embodiment of the present invention, and this embodiment provides a low-temperature centrifugal spray drying device, which includes a constant temperature and humidity air dryer 101 including a first filter 101a, a first processing area 101b, a second processing area 101c, and a processing fan 101d.

[0029] The first processing area 101b includes a primary rotating wheel 101b-1.

[0030] The second processing area 101c includes a secondary rotating wheel 101c-1.

[0031] The secondary wheel 101c-1 includes a first regeneration electric heater 101e, a second regeneration zone 101c-2, a second regeneration electric heater 101f, a first regeneration zone 101b-2, and a regeneration fan 101g.

[0032] The primary rotating wheel 101b-1 is disposed inside the first processing area 101b.

[0033] The secondary rotating wheel 101c-1 is disposed inside the second processing area 101c.

[0034] Usage process: When air enters the constant temperature and humidity air dryer 101, the first filter 101a in the constant temperature and humidity air dryer 101 will filter the air. After the treatment, part of the air will be sent to the second treatment area 101c and the treatment fan 101d through the first treatment area 101b to control the temperature change. Part of the air will be sent to the first-stage rotor 101b-1 and the second-stage rotor 101c-1 through the first treatment area 101b. At this time, the air will be sent to the first regeneration electric heater 101e for heating. After the heating is completed, it will be heated again through the second regeneration electric heater 101f, and finally discharged to the outside through the regeneration fan 101g, thereby achieving rapid cooling again and ensuring product quality.

[0035] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0036] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0037] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0038] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A low-temperature centrifugal spray drying device, characterized in that: include, The drying component (100) includes a constant temperature and humidity air dryer (101), a second filter (102), an air supply fan (103), and a heater (104).

2. The low-temperature centrifugal spray drying device according to claim 1, characterized in that: The drying component (100) further includes a high-efficiency filter (105), a spray tower (106), a double set of cyclones (107), and a material receiver (108).

3. The low-temperature centrifugal spray drying device according to claim 2, characterized in that: The double set of cyclones (107) further comprises a cooling module (107a).

4. The low-temperature centrifugal spray drying device according to claim 3, characterized in that: The constant temperature and humidity air dryer (101) comprises a first filter (101a), a first processing area (101b), a second processing area (101c), and a processing fan (101d).

5. The low-temperature centrifugal spray drying device according to claim 4, characterized in that: The first processing area (101b) includes a primary rotating wheel (101b-1).

6. The low-temperature centrifugal spray drying device according to claim 5, characterized in that: The second processing area (101c) includes a secondary rotating wheel (101c-1).

7. The low-temperature centrifugal spray drying device according to claim 6, characterized in that: The secondary rotor (101c-1) includes a first regeneration electric heater (101e), a second regeneration zone (101c-2), a second regeneration electric heater (101f), a first regeneration zone (101b-2), and a regeneration fan (101g).

8. The low-temperature centrifugal spray drying device according to claim 7, characterized in that: The primary rotating wheel (101b-1) is arranged inside the first processing area (101b).

9. The low-temperature centrifugal spray drying device according to claim 8, characterized in that: The secondary rotor (101c-1) is arranged inside the second processing area (101c).

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