Urea, also known as carbamide, is an organic compound composed of carbon, nitrogen, oxygen, and hydrogen. One of the simplest organic compounds is the main nitrogen-containing end product of protein metabolism in mammals and certain fish species. It is also the nitrogen fertilizer with the highest nitrogen content.
As a neutral fertilizer, urea is suitable for a variety of soils and plants. It is easy to store, easy to use, and has little effect on soil destruction. It is a chemical nitrogen fertilizer that is currently used in large quantities. Industrially, ammonia and carbon dioxide are used to synthesize urea under certain conditions.
Urea dryer Working principle:
Airflow drying removes moisture (mainly surface moisture) from easily dehydrated particles, powdered materials. In the airflow drying, the quality of the dried product is optimally controlled due to the short residence time of the material in the dryer. The enhanced airflow drying of our factory is composed of a set of intensifiers whose speed can be adjusted steplessly. The wet material enters the intensifier through the screw feeder and is fully mixed with the hot air flow, crushing and propelling in the fast rotating knife. Next, the material is broken into fine particles, which are moved to the outlet while drying, and finally enter the drying tube under the attraction of the wind, and further uniformly dried. Wet heavy particles that cannot be attracted by the wind continue to be crushed and dried until they can be sucked up by the wind into the drying tube.
Urea dryer Main use:
This machine is especially suitable for materials with large moisture content, wet materials, and can not be dried by other airflow drying methods, such as white carbon black, copolymer of vinyl acetate and vinyl chloride, cellulose acetate floc, catalyst, CMC. , CT-1 resin, wrought gypsum, electrolytic manganese dioxide, ammonium sulfonate, fluorspar, diatomaceous earth, silica gel catalyst, bone powder, high territory, potassium perchlorate sulfonamide, synthetic resin, active gluten, activity White clay, chemical filter cake, rutile type white powder, azelaic acid, copper sulfate, aluminum sulfate, sodium sulfate, calcium phosphate, phosphate esterified starch, dye, calcium citrate, slime, dough-shaped bread, rice bran, clay , clay cement, urea, bentonite, spherical clay, aluminum hydroxide, barium hydroxide, calcium lactate, food, washed high territory, cyanuric acid, gypsum paddle, lime, biological products, carbon black, calcium carbonate slurry, sludge Slag, organic chemicals aluminum stearate, iron oxide, organic fuel, corn protein feed, wet mud, mica powder, pharmaceuticals, pigments, potassium dichromate pulp, distiller's residue.
Urea dryer Advantages:
(1) The drying speed is fast and the heat and mass transfer area is large. The hot gas inlet speed is high (10-40m/s), the relative speed between the gas-solid two phases (especially the acceleration section) is large, the average heat transfer coefficient is high, and the volume is small.
(2) Gas-solid cocurrent operation, high temperature gas can be used as the drying medium without burning the material. A 10m long airflow tube, 80% of the water content is vaporized and dried in an acceleration section of about 2m in length.
(3) Short drying time (seconds), especially suitable for the drying of materials that are heat sensitive, oxidizable, and not suitable for pulverization.
(4) The moisture content of the product is uniform.
(5) Simple structure, low equipment investment, small floor space, convenient operation, stable performance and small maintenance.
