Application of double cone rotary vacuum dryer in the pharmaceutical industry
2021-10-23 13:11:36
I. Overview The double cone rotary vacuum dryer is a new type of energy application equipment that combines energy technology with vacuum technology. It combines the advantages of vacuum drying and overcomes the shortcomings of conventional vacuum drying cycle and low efficiency. In the drying process of general materials, the work efficiency can be improved by 4 to 10 times compared with the conventional method. With high drying yield, good quality and low processing cost, the double cone rotary vacuum dryer is a high-tech product integrating electronics, vacuum, mechanics, thermodynamics, program control and other disciplines. A new technology and process developed on the basis of the seven major advantages of the microwave vacuum drying equipment in the drying process, including the analysis of the changes, the internal and external heat and mass exchange, and the in-depth study of the water migration process under vacuum conditions. In industrial large-scale production, there are many items that cannot be dried under the characteristics of high-temperature strip vacuum dryers. For example, a conductive heat transfer vacuum dryer is used in pharmaceuticals for pharmaceuticals, chemicals, nutritious foods, and ginseng. In order to ensure the quality of the product, the drying process must be carried out at a temperature lower than 100 ° C or at room temperature. It is known that the gas pressure is lowered and the boiling point of water is also lowered, such as water at an atmospheric pressure (101.3 kPa). The boiling point is 100 ° C, while at 0.073 atmosphere (7.37 kPa), the boiling point of water is 40 ° C. Under vacuum conditions, heating the object allows the internal moisture of the object to evaporate without warming up. Because air convection heat transfer is difficult under vacuum conditions, only relying on heat conduction to provide heat to materials. Vacuum dryers are the key to integrated lifting technology management. The conventional vacuum drying method has a slow heat transfer rate, low efficiency, and difficulty in temperature control. Vacuum chamber dryer Introduction Heat is a kind of radiant heating, which acts directly on the material to heat it inside and outside. It does not need to transfer heat through convection or conduction, so the heating speed is fast, the drying efficiency is high, and the temperature control is easy. . In the 1980s, developed countries began to develop industrialized double-cone rotary vacuum dryers, and achieved good results in practical applications.
Second, the advantages of double-cone rotary vacuum dryer 1, high-efficiency conventional vacuum drying equipment is heated by steam, need to heat from the inside out, the heating speed is slow, it takes a lot of coal, and the double-cone rotary vacuum dryer uses It is electromagnetic wave heating, no heat transfer medium, direct heating to the inside of the object, the heating speed is fast, 1 kW can integrate the water and vacuum dryer at normal temperature in 3-5 minutes, and the technical management is the key heat to 100 °C. The above disadvantages are avoided, so the speed is fast, the efficiency is high, the drying cycle is greatly shortened, and the energy consumption is reduced. Compared with conventional drying technology, it can improve work efficiency by more than four times.
2, heating evenly due to heating, the material is heated simultaneously from the inside to the outside, the temperature difference between the inside and outside of the material is very small, does not produce the situation of internal and external heating inconsistent in the conventional heating, resulting in a puffing effect, which is conducive to smashing, drying The quality has been greatly improved.
3, easy to control, easy to continuous production and automation, due to the rapid adjustment of power and inertia, easy to control, you can adjust the temperature between 40 °C -100 °C.
4, small volume, easy installation and maintenance 5, product quality is good, compared with the conventional method, the quality of processed products has been greatly improved.
6, with disinfection, sterilization, product safety and hygiene. The shelf life is long.
7. The economic benefits are significant. From the characteristics introduced above, energy saving, consumption reduction, product quality improvement, sustainable development of safety and hygiene vacuum dryer, and low equipment investment cost can be seen as significant economic and social benefits.
Third, the basic structure and working principle 1, the use of dry vacuum dryer in the processing of precious herbs (slightly)
Fourth, circuit control design 1, circuit composition block diagram (omitted)
V. System design 1. Selection of vacuum pump 2. Design of material turntable 3. Heat balance design of the whole machine 4. Power adjustment design can be seen above: drying cost is low, benefit is good, equipment is small, equivalent to steam vacuum dryer 20% of the area, 30% of the spray drying equipment, greatly saves the purification plant. Dynamic vacuum dryer is not only used for traditional Chinese medicine extracts, but also for food products and food chemicals, especially for pastes and viscous materials. It is also more suitable for killing bacteria.
Second, the advantages of double-cone rotary vacuum dryer 1, high-efficiency conventional vacuum drying equipment is heated by steam, need to heat from the inside out, the heating speed is slow, it takes a lot of coal, and the double-cone rotary vacuum dryer uses It is electromagnetic wave heating, no heat transfer medium, direct heating to the inside of the object, the heating speed is fast, 1 kW can integrate the water and vacuum dryer at normal temperature in 3-5 minutes, and the technical management is the key heat to 100 °C. The above disadvantages are avoided, so the speed is fast, the efficiency is high, the drying cycle is greatly shortened, and the energy consumption is reduced. Compared with conventional drying technology, it can improve work efficiency by more than four times.
2, heating evenly due to heating, the material is heated simultaneously from the inside to the outside, the temperature difference between the inside and outside of the material is very small, does not produce the situation of internal and external heating inconsistent in the conventional heating, resulting in a puffing effect, which is conducive to smashing, drying The quality has been greatly improved.
3, easy to control, easy to continuous production and automation, due to the rapid adjustment of power and inertia, easy to control, you can adjust the temperature between 40 °C -100 °C.
4, small volume, easy installation and maintenance 5, product quality is good, compared with the conventional method, the quality of processed products has been greatly improved.
6, with disinfection, sterilization, product safety and hygiene. The shelf life is long.
7. The economic benefits are significant. From the characteristics introduced above, energy saving, consumption reduction, product quality improvement, sustainable development of safety and hygiene vacuum dryer, and low equipment investment cost can be seen as significant economic and social benefits.
Third, the basic structure and working principle 1, the use of dry vacuum dryer in the processing of precious herbs (slightly)
Fourth, circuit control design 1, circuit composition block diagram (omitted)
V. System design 1. Selection of vacuum pump 2. Design of material turntable 3. Heat balance design of the whole machine 4. Power adjustment design can be seen above: drying cost is low, benefit is good, equipment is small, equivalent to steam vacuum dryer 20% of the area, 30% of the spray drying equipment, greatly saves the purification plant. Dynamic vacuum dryer is not only used for traditional Chinese medicine extracts, but also for food products and food chemicals, especially for pastes and viscous materials. It is also more suitable for killing bacteria.
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