Changzhou Drying Company is one of the earliest professional manufacturers of drying in ChinaPolymer povidone spray drying system, K15, K30 pressure spray granulation drying tower, povidone drying equipmentOne of the manufacturers of pharmaceutical equipment, specializing in the production of various types of drying, granulation, dust removal, crushing, mixing and other equipment, the variety can be divided into more than 20 categories, nearly 100 specifications and varieties, especially in planning, design has unique advantages. With a thoroughly responsible attitude for users, the implementation of strict selection, careful planning, detailed marketing strategy, and through the user joint demonstration, repeated testing, careful accounting of positive measures, to provide users with satisfactory service. DetailedFineAdvisoryinquiryJointDepartmentsquareformulaGuFirstRaw!DryCalcination
Povidone is a water-soluble polymer with high efficiency adhesion, mainly used as a binder for wet granulation of solid preparationsThe molecular weight of povidone can be characterized by the viscosity of povidone aqueous solution relative to water, expressed by k value, for ultra-high molecular weight povidone with k value greater than 80, due to its large viscosity, low temperature freeze drying and vacuum crawler drying technology and equipment are often used, the equipment investment is large, and the finished product is flake or large granular, non-flowing white powder, resulting in limited application of the product.
1. Polymer povidone spray drying system, K15, K30 pressure spray granulation drying tower, povidone drying equipmentHow it works.
After the air passes through the primary, medium and high-efficiency air filters, it enters the air heater (steam heat exchanger, electric heater, hot blast stove, etc.), heats to the set temperature and enters the hot air distributor, and the air flow after the action of the hot air distributor flows down evenly and vertically, and the material liquid obtains a high pressure by the high-pressure pump, enters the rotating chamber of the nozzle from the tangential inlet, and the liquid obtains rotational motion in the rotating chamber and is sprayed out of the nozzle at high speed to form an umbrella-shaped fog cone. Atomization into umbrella-shaped fine droplets, when the droplets are mixed with hot air and come into contact with heat and mass transfer, then the high-temperature air flow meets the droplets with high moisture content, and the moisture rapidly vaporizes. The dried product enters the receiving device from the bottom of the drying chamber cone, a small amount of fine powder is separated with the air flowing into the dust collector, and finally the hot air is emptied by the exhaust fan. According to the environmental requirements of different products, the hot air is finally emptied after being collected by wet dust collectors and bag filters.
Although the temperature of the hot air is relatively high, the temperature in the drying chamber drops sharply because the hot air enters the drying chamber and immediately contacts with the atomized droplets, which does not indicate that the dry material is overheated, and is especially suitable for the drying of heat-sensitive materials. The temperature at which the discharged product is generally about 20 degrees Celsius lower than the temperature.
2. Polymer povidone spray drying system, K15, K30 pressure spray granulation drying tower, povidone drying equipmentPeculiarity.
This equipment is manufactured, inspected and accepted in accordance with the specifications of the industry standard ZBY93005-90 [pressure spray dryer] of the People's Republic of China.
The angle of the cone of the drying tower is designed to be less than or equal to 60 degrees, and an air vibrator is installed on the cone to ensure that the powder slides smoothly to the bottom to avoid the coking or melting phenomenon caused by the powder adsorbed on the tower wall for too long.
The finish of the inner surface of the equipment and pipes is less than 02—0.3um (mirror finish);The outer surface finish is less than 04—0.5 um (matte treatment).
There are no dead corners and blind holes in the transition part of the equipment connection, and the corners are over-polished with arcs.
All the contact points of this unit with the material are made of SUS304 or 316L material (according to different materials or customer requirements), so that the product can be guaranteed from contamination. The use of ultra-low-carbon and low-carbon 316L material is the best choice for the transmission of clean and high-purity media in modern industry, whether it is judged from the neutrality of the medium being transmitted, or from the corrosion resistance and welding performance.
IIIPolymer povidone spray drying system, K15, K30 pressure spray granulation drying tower, povidone drying equipmentProduction Steps:
Step 1: Ultra-high molecular weight povidone liquid is diluted with purified water to obtain 85 10 dilutions;
Step 2: The diluted material is homogenized by the high-pressure homogenizer, and at the same time, the high-pressure homogenizer pressurizes the diluted material by 10 12MPa
Step three: the diluted material liquid is heated to 80 105 ° by the first heating device 4;Step 4: by conveying the diluted material liquid after heating to the air atomization nozzle 6, simultaneously, the clean hot air that temperature is 160 190 ° is conveyed to the inside of the drying tower 5 through the hot air pipeline 8, and the pressure is 0 in the air atomization nozzle 6 through the high-pressure air conveying pipeline 93～0 .4MPa, the flow rate of 200 300L min of clean pressurized air, air atomization nozzle 6 atomizes the dilution liquid into very small mist droplets, and the mist droplets are in parallel with the clean hot air parallel flow contact, so that the water in the dilution liquid evaporates rapidly within 30s, and obtains a white powdery finished product. In addition to this, the white powdered finished product can be dispensed and packaged by means of a cyclone;In the process of drying ultra-high molecular weight povidone liquid, exhaust gas will be generated, and the exhaust gas can be discharged into the atmosphere by the induced draft fan after dust removal through the dust collector.