1, XSG series rotary flash dryer - process

Rotary flash dryer is a vertical dryer with rotary pulverizing device. It can complete the drying, pulverization and grading of materials at the same time. It is specially designed for drying filter cake, paste and muddy materials. a continuous drying device. Rotary flash dryers are used in the chemical, pharmaceutical, building materials and food industries for continuous drying of filter cakes, pastes and fruit granules. The filter cake material can be directly dried without dilution, the energy consumption is significantly reduced, the drying time is short, the heat sensitive material can be dried, the system takes up little space, and is easy to clean.

The hot air enters the main tower of the flash dryer from the air inlet of the main unit, and the clean heat medium heated by the heat source enters the drying chamber of the rotary flash dryer along the tangential line, forming a powerful vortex together with the mechanical stirring mechanism of the flash dryer. High-speed rotating airflow.


The wet material is forced into the drying chamber after being squeezed by the feeder, and then the blade is pulverized by high-speed rotation and different angles. The high-temperature airflow of the main tower of the rotary flash dryer impacts high-speed rotation, entrainment rises, and agitation and vortex flow Under the effect of being crushed and dried.

The top of the drying chamber is provided with a particle size classifier. The fine powder that meets the drying requirements is discharged from the top of the tower, and is collected by the cyclone separator. The larger particles or larger and moist particles that do not meet the drying requirements cannot be broken by the high-speed airflow and high speed. Rotating, gradually falling under the gravity of the material itself and blocked by the classification ring, returns to the bottom of the drying chamber, and continues to be pulverized and dried until the product is dried to a qualified product, and the material is rotated together with the high-speed airflow to complete the drying process. The drying chamber is discharged with hot air and collected by a separator. The clean exhaust gas is emptied by the induced draft fan.

2, XSG series rotary flash dryer - equipment advantages

1. Rotating blade has unique structure, small wear, wide contact surface, large cutting force, continuous drying, compact layout and easy cleaning;

2. Effectively control the final moisture and fineness, which is controlled by the coordination of the swirling plate and the inlet air velocity. The heat and mass transfer time of the drying process is short and the heat loss is small;

3. The tangential air inlet of the double air duct avoids the speed unevenness of the rotating blade in the radial flow field. The size of the bottom annulus is adjusted according to different material properties, the system resistance is small, and the thermal efficiency is high, so that the wind speed is at the best. status;

4. For the treatment of heat sensitive materials, the bottom of the main machine belongs to the high temperature zone. The gas velocity in this area is high and there is a cooling water protection device to avoid coking discoloration of the material; when feeding, it is not necessary to dilute the material and reduce the drying energy consumption;

5. The final moisture of the material reaches a very low level and is not affected by the fluctuation of the initial moisture, which affects the product quality. A multi-layer swirling sheet is arranged in the drying tower to form a relatively stable fluidized bed, and the swirling sheet also ensures drying. The required residence time and the role of grading.

6. The new type of sealing structure is used for the main body of the rotary flash dryer. The life cycle of the main bearing is extended and the bearing housing is provided with a water compartment circulating cooling device. It is suitable for the dry production of low viscosity sludge, paste, filter cake or semi-dry powder containing water- or solvent-insoluble amorphous or crystalline fine particles.

3, XSG series rotary flash dryer - application range

Fine chemicals: magnesium hydroxide (aluminum), tris(di)-based lead sulfate, alumina powder, molecular sieve, aged soil, 4A zeolite, white carbon black, resin, coal powder, calcium hydrogen phosphate, diatomaceous earth, chlorination Choline, titanium dioxide, dibasic acid, mancozeb, silica gel, salt gypsum, white carbon black, calcium hydrogen phosphate, aluminum silicate, barium carbonate, antimony trioxide, calcium silicate, zinc oxide, stearate , carbonates, heavy metal salts, etc.

Chemicals: organic and inorganic: brightener, manganese oxide, lignin, potassium nitrate, white carbon, zinc, zinc oxide, magnesium carbonate, carbon oxide chromium oxide, active zinc oxide, aluminum sulfate, magnetic materials, two Copper oxide, zinc diphosphate, zeolite.

Pigment dyes: ultramarine blue, zinc chromate, indigo blue, butyric acid, iron oxide red, chrome orange, yellow iron oxide yellow, fluorescein, H acid, zinc antimony white, indigo pigment, antimony, black iron oxide , J acid direct black, phthalocyanine dye, carbon black, DSD acid, disazo dye chromophenol, black G, titanium hydroxide, zinc sulfide, azo dye intermediate, iron oxide red (yellow, black), ultramarine, Direct black, frozen yellow G, J acid, DSD acid.


Building materials and mining: light calcium carbonate, rare earth, manganese oxide, high territory, bentonite, antimony ore powder, lithopone, alumina, tungsten ore powder, titanium white*, ultrafine quartz, heavy calcium.

Medicines and foods: chloramphenicol intermediates, oxytetracycline intermediates, barium aluminate, bean paste protein, starch.

Inorganic materials: borax, calcium carbonate, hydroxide, magnesium hydroxide, magnesium carbonate, copper sulfate, iron oxide, various metal hydroxides, various inorganic salts, synthetic cryolite, and the like.

Ceramic: kaolin, silica, clay, etc.

Food: soy protein, gelatinized starch, distiller's grains, beer grains, protein powder, feed yeast, vitamins, mineral salts, overgrowth, blood meal, fish meal, meat and bone meal, wheat sugar, glucose, starch, wheat starch, etc.
Organic substances: Atrazine (pesticide insecticide), lauric acid, benzoic acid, benzoic acid, brewer's grains, sodium oxalate, cellulose acetate, etc.

Pesticides and intermediates: TMTD, application music, carbendazim powder, benzacetin, insecticide, atrazine, pesticide insecticide, badan, pesticide fungicide.