Purchasing essentials for spray dryers
Spray dryer is a kind of continuous dryer. Zui is suitable for producing powdery, granular or massive solid products from solution, emulsion, suspension and plastic paste liquid raw materials. The key is atomization (dispersion). Drying (heat exchange), granulation process. Generally, it includes a traditional Chinese medicine infusion spray spray dryer, a biological pesticide centrifugal spray dryer, a high-speed centrifugal spray dryer, and a sterile spray dryer. Features The drying speed is fast, the surface area of ​​the liquid is greatly increased after atomization, and in the hot air flow, 95%-98% of the water can be evaporated instantaneously, and the drying time is only a few seconds, which is especially suitable for drying the heat sensitive material. The product has good uniformity, fluidity and solubility, and the product has high purity and good quality. The production process is simplified and the operation control is convenient. For liquids with a moisture content of 40-60% (up to 90% of special materials), it can be dried into a powder product at one time. After drying, no pulverization and screening are required, which reduces the production process and improves the purity of the product. The particle size, bulk density and moisture of the product can be adjusted within a certain range by changing the operating conditions. working principle The air is filtered and heated into the air distributor at the top of the dryer, and the hot air enters the drying chamber in a spiral shape evenly. The liquid is sprayed into a very fine misty liquid droplet through a high-speed centrifugal atomizer at the top of the tower body, and it can be dried into a finished product in a short time by cocurrent contact with hot air. The finished product is continuously discharged from the bottom of the drying tower and the cyclone, and the exhaust gas is evacuated by the induced draft fan. The tower body has a cold air jacket; the tower body is equipped with an automatic rapping device; the tower body and the pipeline are equipped with a quick opening cleaning hole and a drain hole; an automatic control constant temperature feeding tank; a manual high pressure washing tower random attachment; and a part in contact with the material is adopted Made of stainless steel material; material collection adopts two-stage cyclone dust removal device, or first-stage cyclone dust collector and wet dust collector; automatic control and continuous device for inlet air temperature; equipped with air sweep device. Purchase notice: Polylactic acid (PLA) is a novel biodegradable material made from starch derived from renewable plant resources such as corn. Starch raw materials obtained glucose through saccharification, and then fermentation of glucose and certain strains to produce high purity lactic acid, and then through chemical synthesis method to synthesize polylactic acid of a certain molecular weight. It has good biodegradability and can be completely degraded by microorganisms in nature after use, resulting in carbon dioxide and water, which does not pollute the environment. It is very beneficial to environmental protection and is recognized as an environmentally friendly material. Ordinary plastics are still incinerated, causing a large amount of greenhouse gases into the air, while polylactic acid plastics are buried in the soil to degrade, resulting in carbon dioxide directly into the soil organic matter or absorbed by plants, will not be discharged into the air, will not cause the greenhouse effect. Polylactic Acid Pla,Pla For Foam,Biodegradable Polylactic Acid Pla,Low Carbon Material Pla Xingbang High Molecular Materials Co., Ltd. , https://www.chemicaladditive.com
1. Liquid name, physical properties: solid content (or water content), viscosity, surface tension, PH value.
2. Powder capacity after drying, allowable residual water content, particle size, and allow high temperature of zui.
3. Production, starting time per day.
4. Available energy: vapor pressure available, capacity, available for coal, oil, gas.
5. Control requirements: Whether the inlet and outlet temperatures need to be controlled automatically.
6. Polling requirements: Whether to install a bag trap, the environment requires exhaust gas.
7. Other special requirements.