- Continuous operation, high thermal efficiency. The disc-type continuous drier carries on the drying by the conduction heat transfer way, in the drying process only enters very little air, its tail gas carries very little, therefore its heat efficiency can reach 65% above.
- Low power consumption, low noise. Because the material layer is very thin, the spindle speed is low, the power consumption of the material transfer system is small, and the power consumption of the whole drying device is only 1/5 ~ 1/7 of that of the convective heat transfer device, and the noise is very small.
- The material is heated evenly and the drying time is short. As the material rolls along the Archimedean spiral path in the drying pan during the drying process, the material travels five times the radius of the drying pan and falls down layer by layer. Therefore, the contact time of the material with the heating pan is basically the same, the heat is evenly distributed.
- Small material loss, good environmental protection.
- High drying capacity.
- The equipment is closed and operated continuously, and the labor intensity of the workers is low.
- The drying medium can utilize the steam produced by the waste heat boiler, thus saving a lot of coal.
- Product quality is stable.
Principle:
The wet material is continuously added to the first layer drying plate of the upper part of the dryer by the feeder, and the rake arm with the rake leaf rotates to make the rake leaf continuously turn over the material. The material flows through the surface of the drying tray in an exponential spiral, and the material on the small drying tray is transferred to the outer edge, and the outer edge falls to the outer edge of the large drying tray below, the material moves inwards on the large drying tray and falls into the next layer of small drying tray from the intermediate blanking opening. The drying trays are arranged alternately so that the material can flow continuously through the whole dryer. A hollow drying plate is filled with heating medium in the form of saturated steam, hot water, heat-conducting oil and high-temperature molten salt. The dried material falls from the last layer of drying tray to the aggregate tray and is finally transferred to the discharge port by raking leaves. The moisture is discharged from the material through a moisture discharge opening on the top cover, and the moisture of the vacuum disc drier is drawn out through a vacuum opening on the top cover. The dry material discharged from the bottom layer can be packed directly. By adding finned heater, solvent recovery condenser, bag filter, pre-drier, induced draft fan and other auxiliary machines, the drying capacity can be increased, the solvent can be conveniently recovered, and the operation of heating, cooling, calcination, sublimation, pyrolysis and reaction can be carried out.
Application area:
The disc dryer is based on the batch agitation conduction drier, which synthesizes a series of advanced technologies, through continuous improvement, a kind of multi-layer fixed hollow heating round carrier plate, rotary harrow agitation and vertical continuous drying equipment with heat conduction as main function are developed. The drying process is that the heat carrier is passed into each layer of hollow disc, and the wet material placed on the disc surface is heated indirectly by heat conduction, the moisture content in the moving and tumbling material evaporates at the operating temperature, and the steam is discharged with the tail gas of the equipment, thus obtaining the qualified dry finished product continuously at the bottom of the equipment. In recent years, many countries will be widely used in chemical, dyes, pesticides, plastics, pharmaceuticals and food and other fields, in the use of continuous improvement. Compared with traditional drying equipment, the utility model has the advantages of high heat efficiency, low energy consumption, uniform drying, good product quality, small occupation of land, less auxiliary equipment, less pollution, continuous production, convenient operation and wide application range. Therefore, in the drying technology has its broad prospects for development, causing more and more attention and research. According to the product performance, drying requirements and processing capacity, the disc drier adopts the spindle stepless speed regulation, manual adjustment of the disc feeder adjusting sleeve height, control of the temperature distribution of each layer heating plate, a series of measures, such as cooling at the end, give full play to the disc-type continuous dryer's superior performance.
Operation Flow:
- basic arrangement of disc continuous dryer flow: wet material through the quantitative feeder evenly add to the top of the disc continuous dryer, in the dryer flow through the completion of the drying process, from the bottom of the dryer discharge dry material.
- disc continuous dryer plus heater process: suitable for the drying process with higher evaporation intensity. On the basis of basic configuration, add fin heater, into the dryer into a small flow of hot air, for the absorption of dry, drying process from the water vapor escaping from the material, to prevent moisture condensation in the top of the dryer and the exhaust tube.
- disc continuous dryer with hot air system: suitable for drying process with high evaporation intensity. On the basis of basic configuration, equipped with fin heater and tail gas induced draft fan, through the hot air drying process will escape moisture quickly away, further strengthen the heat transfer and drying process, and prevent moisture in the top of the dryer in the exhaust pipe condensation.
- the process of disc-type continuous drier with dust removal device: it is suitable for drying toxic, harmful and environment-polluting materials and easy-flowing materials, such as pesticides, dyes and their intermediates. On the basis of the basic configuration, bag filter, fin heater and induced draft fan are equipped to trap the trace materials, which are very fine and light, to protect the environment and reduce the product loss.
Scope of application:
- Organic chemical products
Organic chemical raw materials and intermediates such As polyvinyl chloride resins, polytetrafluoroethylene resins, trans-butanedioic acid, anthraquinone, nitro-anthraquinone, 4-aminophenol acid, melamine, cyanuric acid, 4-aminobenzenesulfonic acid, antioxidant 168, chromophore As, stearate, aniline, nitroaniline, dipentaerythritol, chlorinated paraffin, calcium formate, triethylene diamine, sodium benzenesulfonate, isophthalic acid, dimethyl pentasulfonate, thiourea, oil-soluble aniline black dye, acid black dye, etc. .
- Inorganic chemical products
Lightweight, calcium carbonate, activated calcium carbonate, nanometer-sized ultrafine calcium carbonate, magnesium carbonate, pyrite concentrate, pyrite, nickel-copper ore, Aluminum hydroxide, lime-black, strontium carbonate, barium carbonate, potassium carbonate, lithopone, sodium hydroxide, silica powder, barium sulfate, potassium sulfate, microspheres, catalysts, Magnesium hydroxide, copper sulfate, nickel sulfate, nickel ammonium nickel, sodium molybdate, sodium chloride, cryolite, iron oxide red, nickel oxalate, cobalt oxalate, iron oxide black, lithium hydroxide, nickel(II) hydroxide acid, zirconium hydroxide, calcium phosphate, sulfur, etc. .
Ampicillin, Deng Salt, l-phenylglycine and its intermediates, ceftazidime, ceftriaxone, analgin, cimetidine, vitamin B12, vitamin C, medicinal salt, medicinal Aluminum hydroxide, medicinal magnesium metasilicate, caffeine, tea, flower extract, ginkgo biloba leaf, chocolate powder, starch, corn germ and other raw materials and pharmaceutical intermediates.
Potassium carbonate, biological potassium fertilizer, protein feed, aureomycin for feed, mycelium, bran, distiller's grains, grains, seeds, herbicides, cellulose, feed Dicalcium phosphate, etc. .