Lignite rotary dryer three drum dryer

详情

Lignite dryer Technology:
In the past, centrifugal mechanical dehydration was used in the usual drying methods. The equipment was expensive, the capacity was low, and the dewatering range was small, usually only about *0% of the precipitation. There is a water content of *5 - *0%. Lei Jin Machinery H type rotary lignite drying machine has adopted the new technology of crushing and dispersing brown coal and then heating and drying, so that the drying process of materials has been realized continuously, industrialised and automatized. After drying with brown coal slurry, the moisture content of wet brown coal can be reduced from *5% to *0% below *3%, and it can be used as fuel coal and coal washing process to achieve good economic, social and environmental benefits.
The rotary lignite drying machine ensures the quality of the dried brown coal unchanged, and uses the low temperature four stage drying process to evaporate lignite moisture to less than *3% of water content. A drying zone in high humidity conditions with high temperature of **0 DEG C to remove most of the water, ensure that the chemical composition of lignite is not changed and not easy to burn; two drying room temperature of **0 DEG C, the temperature in the strong wind in high water, to ensure that the lignite is not coking; three stage drying zone indoor temperature of **0 DEG ***0 DEG. The crushing device in the drum by repeated impact, scattered materials, downstream drying; four drying zone for high exhaust area, room temperature of *0 DEG **0 DEG, depending on the wind system is in low temperature hot air pressure to exclude moisture.

The main features of the lignite dryer are:
1. The lignite dryer has strong anti overload capacity, large amount of treatment, less fuel consumption and low drying cost.
2, adopt the downstream drying method, the flue gas and wet material will enter the dryer from the same side, which can use high temperature flue gas to achieve high evaporation intensity, and the outlet temperature of dryer is low, and the thermal efficiency is high.
3, the operation parameters can be changed according to the properties of different materials, so that the material can form a stable full broken fabric curtain in the dryer barrel, and the mass heat exchange is more sufficient.
4. The new feeding and discharging device eliminates the phenomenon of block, discontinuity, unevenness and return of the drum dryer, and reduces the load of the dust removal system.
5, the new internal structure strengthens the cleaning and heat conduction of the dispersed material, eliminates the sticking phenomenon of the inner wall of the cylinder, and is more adaptable to the moisture and viscosity of the material.
6, the lignite dryer realizes the "zero horizontal thrust", which greatly reduces the wear of the retaining wheel, and the cylinder is running smoothly and reliably.
7, the lignite drying machine adopts the "aligning type supporting wheel device", so that the matching between the supporting wheel and the rolling ring is always linear contact, thereby greatly reducing the wear and power loss.
8, the grain size and moisture can be controlled according to the requirements of the user. The moisture of the product can be less than 8% when the slime is dried, and the grain size can be controlled below 8mm.