Fukang environmentally friendly coal slime dryer, positive and negative air pressure pulverized coal dryer, explosion-proof dryer

型号：

1.5x16米

1. Source and Current Situation of Coal Slime Dryer Coal slime is an accessory produced in the coal production process. Coal slime will be produced more or less in all coal production processes. Depending on the production mechanism, its utilization value is also different. . However, as the amount of coal slime piled up continues to increase, it has brought burdens to the entire society and the coal production industry. At the same time, as coal resources become increasingly scarce, the emerging industry of coal slime drying has been born. At present, my country's annual coal slime emissions are about 30,000 tons, of which the utilization rate does not exceed To a certain extent, it can alleviate my country's increasingly tight coal supply and reduce environmental pollution in mining areas, and can also bring huge economic benefits and good social benefits.
2. Coal slime dryer system and working principle
Since the moisture content of coal slime is relatively large, generally above 1, it has high cohesiveness and high humidity characteristics. Rotary drum horizontal dryers are generally used to dry high-humidity materials. The diameter of the cylinder is not large, but the length is longer than that of ordinary drying equipment. In this way, the time for the materials to be dried can be greatly extended, and the moisture can be fully reduced. The coal slime drying system consists of four parts, namely the heat source part, the feeding part, the drying cylinder part, and the discharging part.
The heat source part can use a combustion chamber to burn coal, or it can be high-temperature exhaust gas from a power plant or other industrial sectors. The feeding part consists of coal slime dispersing equipment and conveying equipment, which is responsible for transporting coal slime into the drying cylinder. The drying cylinder part consists of a cylinder and a transmission device, and is the core component of the coal slime drying equipment. The discharging part consists of a discharging device and conveying equipment, which is responsible for transporting the dried coal slime to the stacking location.
3. Main features of coal slime dryer
After in-depth research on coal slime, the Mining Machinery Manufacturing Factory has specially developed a miniature slime drying test equipment, specifically for the drying of coal slime. After repeated drying experiments, analysis and comparison, a complete set of equipment for coal slime drying was finally developed, and was tested in actual production at coal production enterprises across the country, proving that it was feasible and successful. The coal slime drying equipment of our factory has the following characteristics
It adopts the downstream drying method. The flue gas and the material enter the coal slime drying equipment from the same direction. The high temperature flue gas can be used to obtain high evaporation intensity and drying The machine outlet temperature is low and the thermal efficiency is high
The dryer has strong overload resistance, large processing capacity, low fuel consumption and low drying cost
The operating parameters can be changed according to different material properties so that the materials can be dried A stable full-cut fabric curtain can be formed in the barrel, allowing for more complete mass and heat exchange. The slime dryer system adopts new feeding and discharging devices, which eliminates the insufficiency of feeding caused by ordinary dryers. Continuous, uneven, clogging and other phenomena reduce the load of the dust removal system
The new internal structure strengthens the cleaning and heat conduction of dispersed materials, eliminates the sticking phenomenon on the inner wall of the cylinder, and reduces the moisture content of the material. The adaptability of viscosity is stronger
. The system achieves zero horizontal thrust r, which greatly reduces the wear of the supporting wheel. The cylinder runs smoothly and reliably
. The dryer adopts an aligning supporting wheel device r , so that the cooperation between the supporting wheel and the rolling ring is always in linear contact, thereby greatly reducing wear and power loss
. The product particle size and moisture can be controlled according to user requirements. When drying coal slime, the product moisture can reach below, and the particle size can Control the following.