Chinese medicine extract refers to the preparation made from Chinese herbal medicines by leaching the active ingredients with suitable solvent, evaporating some or all of the solvent and adjusting the concentration to the prescribed standard. It is an intermediate product of Chinese medicine preparation and an important raw material for many proprietary Chinese medicines. For example, when preparing some Chinese medicine tablets, capsules, pills and other dosage forms, it is often prepared first with extracts. Consumers' demand for natural, green and healthy health care products is increasing. Chinese medicine extracts are widely used in health care products with a broad market prospect because they are derived from natural Chinese herbs and retain a variety of active ingredients and health care functions, such as honeysuckle extracts which have the effect of clearing heat and removing toxins. Chinese medicine extracts can also be used as food additives, not only to provide a unique flavor, but also has certain health functions, such as licorice extract has a long-lasting sweetness and low calorie, can be used in the production of confectionery, beverages, pastries and other food products, with the pursuit of consumers for healthy food, its application in the food and beverage industry demand will also continue to expand.
The coverage of traditional Chinese medicine in health insurance has been expanding, and more medicines containing traditional Chinese medicine extracts have been included in the health insurance catalog, which reduces the burden of medication on patients, thus promoting the application and market demand for traditional Chinese medicine extracts in clinical treatment. As the market demand for Chinese medicine extract increases, more and more enterprises enter the industry, and the competition becomes more and more intense. Only by continuously improving the quality of products and providing better services can manufacturers take advantage of the competition and thus gain more market share. The spray dryer for Chinese medicine extract produced by Longxin adopts advanced microencapsulation granulation technology, which can improve the stability, solubility and bioavailability of Chinese medicine extract, expand its application in different dosage forms, satisfy the demand of different kinds of extracts, and promote the development of the Chinese medicine extract market. The new equipment adopts automatic control system to realize automatic material conveying, feeding, drying, unloading and other operations, reducing manual intervention, lowering labor intensity and production costs, while improving production efficiency and product quality stability.
The main structure of Chinese medicine extract spray dryer
Chinese medicine extract spray dryer has a wide range of applications in the field of traditional Chinese medicine, mainly used to dry the Chinese medicine extract into powder or granule, in order to facilitate the subsequent preparation process, such as made into tablets, capsules, granules and so on. In addition, it can also be applied to the production process of traditional Chinese medicine health products, traditional Chinese medicine extracts, etc., to improve the quality and stability of the products and extend the shelf life of the products.
(1) Hot air system: provides hot air for the drying process, generally including air filter, heater and other components. The air filter is used to filter impurities in the air to ensure that the air entering the drying tower is clean; the heater heats the air to the required temperature to meet the drying requirements.
(2) Atomization system: it is one of the key components, and the common ones are centrifugal atomizer and pressure atomization nozzle. The centrifugal atomizer generates centrifugal force through high-speed rotation to disperse the Chinese medicine extract into fog droplets; the pressure atomization nozzle relies on the pressure provided by the high-pressure pump, so that the extract is sprayed from the nozzle to form a mist.
(3) Drying tower: It is a place for heat exchange between Chinese herbal medicinal extract and hot air, usually a cylindrical tower. The tower has a cold air jacket, which can prevent the material from sticking to the wall and coking; the wall of the tower may also be equipped with an automatic vibration device, which helps the material to fall and prevents sticking to the wall.
(4) Material collection system: It is used to collect the dried Chinese medicine extract powder, and generally adopts two-stage cyclone dust collector or one-stage cyclone dust collector and wet dust collector combination to improve the powder collection rate and realize the clean and continuous airtight conveying of the finished products.
(5) Exhaust gas treatment system: It is used to deal with the exhaust gas generated in the drying process, including dust removal and dehumidification, in order to reduce the pollution of the environment. Common exhaust gas treatment equipment include cyclone dust collector, wet dust collector and so on.
(6) Control system: realize the automatic control of the drying process, including the monitoring and adjustment of temperature, pressure, flow and other parameters. Through the control system, the stability of the drying process and the consistency of product quality can be ensured.
Chinese medicine extract spray dryer performance characteristics
(1)High drying efficiency
Rapid drying: Chinese medicine extract is dispersed into tiny droplets by atomizer, and fully contact with hot air, the surface area increases greatly, a large amount of water can be evaporated in a very short time, it generally takes only a few seconds to complete the drying process, which greatly improves the production efficiency, especially for the drying of heat-sensitive materials, and it can effectively retain the active ingredients in the Chinese medicine extract.
Continuous production: it can realize continuous feeding and discharging, uninterrupted drying operation, with strong production capacity, which can meet the demand of large-scale production and improve the continuity and stability of production.
(2)Wide material adaptability
A variety of material forms: raw material liquid can be solution, slurry, emulsion, suspension, paste or melt, and even filter cake and other forms, can be processed through the spray dryer, the different forms and properties of traditional Chinese medicine extract has good adaptability.
Different viscous materials: for the viscous characteristics of Chinese medicine extract, through special design and technical improvement, such as optimizing the structure of the atomizer, adjusting the drying process parameters, etc., it can effectively solve the drying problems of highly viscous materials, ensure that the materials are smoothly atomized and dried, and obtain stable quality products.
(3) Good product quality
Maintaining the activity of ingredients: due to the rapid drying process, the material in the high-temperature environment of the residence time is short, can zui degree of retention of the active ingredients and biological active substances in the traditional Chinese medicine extract, to ensure that the medicinal value and quality of the product.
Good product uniformity: the atomized droplets are uniformly dispersed and dried in the hot air, which makes the dried product with good uniformity, fluidity and solubility, narrow particle size distribution, regular particle shape, high purity, stable and reliable quality.
Avoiding deterioration and coking: the tower is equipped with jacketed cold air cooling device, specially designed hot air distributor, etc., which can prevent the material from softening, melting or even coking and deteriorating due to the high local temperature on the tower wall, and ensure the product quality.
(4)Good effect of preventing sticking wall
Cold air jacket and cooling device: the tower body is equipped with cold air jacket, can effectively reduce the temperature of the tower wall, to avoid the material in the wall due to high temperature and sticky wall; at the same time, some dryers also use frozen dehumidification air cooling receiving device, so that the material quickly leave the high temperature area and cooling, and further to prevent the material in the cyclone and other parts of the high temperature due to the long residence time and the emergence of softening caking, sticking to the wall and other issues.
Air wall-sweeping and shock device: by setting up air wall-sweeping device in the tower body or installing air shocker on the cone, the powder adsorbed on the cylinder body will be pulsed down by compressed air, which can effectively solve the problem of high sugar content and high temperature softening and sticking wall of Chinese medicine extract materials and ensure the normal production.
(5) High degree of automation
PLC control system: It adopts PLC program control system circuit, equipped with touch screen animation displaying the process flow, which is simple, intuitive and operable. Through this system, it can realize the fineque control and real-time monitoring of parameters such as inlet air temperature, outlet air temperature, tower pressure, etc., and the variable operating parameters can realize the fuzzy technology automatic tracking and adjustment to ensure the stability of the drying process and the consistency of product quality.
Frequency conversion speed regulating atomizer: use frequency converter to regulate the rotational speed of the atomizer stably and safely, according to different material properties and drying requirements, adjust the atomization effect precisely, ensure that the material can be uniformly atomized into tiny droplets, improve drying efficiency and product quality.
(6)Convenient cleaning and sterilization
Quick-open cleaning holes and sewage holes: the tower and pipeline are equipped with quick-open cleaning holes and sewage holes, which is convenient to thoroughly clean the inside of the equipment at the end of production to prevent material residues and cross-contamination, and to meet the hygienic requirements of pharmaceutical production.
Good equipment sealing: the transmission parts in contact with materials in the equipment adopt good sealing measures, the discharge is operated with sealed butterfly valves, and the induced draft discharge pipe section adopts live connection, etc. These designs not only prevent air leakage, but also facilitate the disassembly, cleaning, disinfection and sterilization treatment of the equipment to ensure the cleanliness and hygiene of the equipment.
(7) Strong environmental performance
Air purification system: Equipped with middle, middle and high three-level air filtration devices, the air entering the drying system reaches 100,000 purification standards, effectively removing impurities and microorganisms in the air, which not only ensures the quality of the products, but also reduces the pollution of the environment.
Exhaust gas treatment: The exhaust gas generated in the drying process is treated to reduce dust emission and pollution to the environment, making the production process more environmentally friendly and in line with the relevant environmental protection requirements.
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