Overview of starch airflow dryer engineering
Starch is a high polymer of glucose, which hydrolyzes to a disaccharide stage and becomes maltose. After complete hydrolysis, it yields a monosaccharide (glucose). There are two types of starch: amylose and amylopectin. The former is a spiral structure without branches; The latter consists of 24-30 glucose residues α- The 1,4-glycosidic bond is formed by connecting the end to end, and at the branch chain, it is α- 1,6-glycosidic bonds. Amylose starch appears blue when exposed to iodine, while branched starch appears purple red when exposed to iodine. This is not because starch undergoes a chemical reaction with iodine, resulting in an interaction. Instead, the central hole in the starch helix is able to accommodate iodine molecules, and through van der Waals force, the two form a blue black complex. Experiments have shown that individual iodine molecules cannot cause starch to turn blue, but in fact, it is the iodine molecule ion (I3) that causes starch to turn blue. Starch is a nutrient stored in plants, stored in seeds and tubers, and has a high starch content in various types of plants.
Principle of starch airflow dryer
It is a large-scale drying equipment that adopts the principle of instant drying, utilizing the rapid movement of hot air to drive wet materials and suspend them in the hot air. This strengthens the entire drying process and improves the rate of heat and mass transfer. After airflow drying, the unbound moisture of materials can be almost completely removed (for example, the moisture content of materials such as starch is ≤ 40%, and the finished product discharge can be 13.5%), And the dried materials will not deteriorate, and the output can be significantly improved compared to ordinary dryers. Users can achieve high economic benefits in the short term.
Application scope of airflow dryer
Suitable for the drying and dehumidification of powdered materials in industries such as pharmaceuticals, chemicals, food, building materials, plastics, etc., such as starch, fish meal, salt, distiller's grains, feed, gluten, plastic resin, mineral powder, coal powder, sugar chlorate, A · S · C benzoic acid, 2.3 · acid, polychloroacetic acid polypropylene, sodium sulfate, sodium metabisulfite, and other materials.
