Paper making itself has high humidity and high cohesiveness. Traditional small papermaking has not been able to deal with this characteristic. The special small papermaking device for "three-stage multi-loop rotary rake flying" papermaking uses a unique dispersing device, which can dry the bonded papermaking after dispersing, increase the contact area between papermaking and hot air, and greatly improve the heat utilization rate. The moisture content of the paper can be reduced to 12% once after drying. For one thing, the paper after drying can be directly used as fuel. Make paper waste into treasure. In addition, after years of unremitting efforts, the R&D Department of our company can use boiler exhaust as a heat source for papermaking, and successfully introduce the use of boiler exhaust for small papermaking. It is heating without investment and heating without cost. Really energy-saving and drying, really energy-saving and environmental protection.

　　The outstanding feature of the front drying equipment serving the chemical industry is that the role of technology content is increasingly prominent. This is quite different from the past when selling products mainly depends on price competition. Among them, some drying equipment with high technology content, focusing on the development of new products manufacturers, the benefits are increasing; on the contrary, some products with low technology content and weak ability to develop new products and technology enterprises, the benefits began to decline.

　　The principle is roughly the same. The bottom of the cone is tangential air intake, the middle of the cylinder is fed, and the bottom is stirred to break up the cake or slightly sticky particles. The finer particles rotate with the air flow, and the particles corresponding to the gas velocity can be discharged through the sudden contraction opening on the top of the device. Its yield can reach 8 t/h. The main difference from flash papermaking lies in the bottom structure and the air inlet type.

　　This equipment is a vibration source added to the convective drying equipment to make the air distribution plate or the whole machine vibrate. Because the operating gas velocity can be reduced, especially for materials with uneven particle size distribution, the drying rate and thermal efficiency can be improved, which has been widely used.

　　The material tray is separated into special trolleys, which can be used to enter and exit tunnels one by one in order to increase production and thermal efficiency. Other structures are similar to small box papermaking.

　　When the air flow acts on the critical velocity of the particle group of the dried material and the velocity of the particles taken out, the particles form a fluidized movement, which enhances the heat and mass transfer between the two. It is often used in fine chemicals and pharmaceutical products.

　　The structure is a vertical cylinder with several layers of turntables inside. Material can be added from the top and dropped layer by layer to release from the bottom. Hot air is introduced from the bottom and circulated by several blast turbine impellers located in the center of the cylinder. Heaters are installed at the corresponding height of the inner wall of the machine to supplement the heat of the air and improve the thermal efficiency and drying rate. However, the equipment is not easy to clean, and it is difficult to produce many kinds of materials and require clean materials.

　　It can be used for drying corn, cereals, vegetables, etc. The machine is equipped with a transmission belt made of stainless steel wire mesh. The material moves with the belt and can be heated in segments. The unit is 1.8-2 m long per segment, which can be connected to 40m long and can handle up to 4T per hour. In the constant drying stage, the temperature of hot air can reach 130 C and the relative humidity of exhaust can reach 85%.

　　Equipment for drying droplets into powder products directly by hot air after atomization of liquid or suspension. Atomization methods include centrifugal spray, pressure spray and airflow spray. In the design of drying room, the introduction of hot air has a great influence on the drying process. In addition, the temperature of imported hot air has a great relationship with thermal efficiency. The higher the temperature, the higher the thermal efficiency. Generally, the air intake is 150 C, and the thermal efficiency is about 30%.

　　In addition, the progress of drying technology will reverse the current situation of domestic drying equipment export. At present, China's drying equipment has not yet formed an export scale, the export volume is less than 5% of the total, and mainly sold to Southeast Asia. But according to the authoritative forecast, with the development of technology, the proportion of export drying equipment in the total output of our country will increase from 5% to 10% in the next few years, and the export market will expand from Southeast Asia to Europe and America. There is a big gap between the manufacturing level of domestic large-scale drying equipment and the international level, which is expected to improve.

　　China's drying industry started late and had a weak foundation, but it developed rapidly. The rapid development of industry, agriculture and science and technology has led to the development of drying equipment and better performance in the market. Drying equipment factories have sprung up like bamboo shoots after a spring rain. Some enterprises have a high starting point, adhere to the development of science and technology, and play a role in promoting the development of drying industry. But there are also "miscellaneous brands" with low investment and low technology content, which occupy the market with a large number of low-quality and low-cost equipment, which not only affects the overall image of drying equipment, but also causes "internal dispute" in the price of domestic drying equipment, resulting in the phenomenon that good products can not sell at a good price, and good products can not compete with bad products. Low-tech production

　　Rotary drum small papermaking is a slightly inclined horizontal cylinder, convection of material and hot air through small papermaking, is an earlier model. Although it is simple in structure, it has high thermal efficiency and allows high temperature operation. Now mining or inorganic chemical industry, coal washing and drying industry is widely used. Rotary drum papermaking is very adaptable to various materials, such as sludge, slag, River sand, papermaking, desulfurization gypsum, soybean residue, wine residue and other materials with high moisture and high cohesion have incomparable advantages. Over the past few years, the improvement of the structure of the lifting board in the drum, the addition of heating pipes, dispersing devices and inner liner sleeves, etc., have made the performance of the small-scale paper-making drum continuously improve and its application scope become wider and wider.

　　Flash small papermaking is equipped with hot air at the bottom of the cone and stirring is arranged to make the falling filter cake dispersed by strong stirring. After drying, fine powder can be sent to cyclone or bag filter to collect with airflow. suitable