粉煤灰烘干机英文介绍.doc

Fly ash can be divided into two kinds of dry-type emission and wet-type emission. The chemical properties of the wet fly ash are basic same with the dry fly ash, just because hold more water (maximum of 45%), and cant meet the requirements of the cement production and market, because the fly ashs water is too large, go against the next step process production such as grinding, sorting, processing, etc. Must first dry and dehydration. Therefore, fly ash dryer, must have a reasonable structure, let the wet fly ash dried with reasonable energy consumption and concise drying process, make its moisture content reach to operating requirements.Fly ash drying composed by three major components, heating system, heat exchange system and ventilation dust removal system.Heating system part adopts the hot air stove technology, heating power enough, heat transfer effect is good, simple structure.Heat transfer system is the drying roller, in the cylinder body the raising material plate alternate permutation spiral, repeatedly raise and scatter the materials, heat efficiency is extremely high.Ventilation dust removal system is just need equip the deduster, because fly ash fine grain and light density, after drying in the negative pressure condition it is easy to be taken away by the airflow, leading to the fluid media happens change, and dust-contained gass water is bigger, prevent extraction by the induced-wind system and injection into the atmosphere to cause the wasting of resources and environmental pollution, dust collection by the deduster uniformly.Wet fly ash first feed into rotary cutter for broken by the conveyor, in case the block material into the drying cylinder influences drying efficiency, after broken the materials into the drying roller, the cylinder body have a lot of raising material plate which with alternate permutation spiral, through the rotation of the cylinder driving the raising material board constantly keep the material thrown around, raise and scatter, and the hit device of the roller wall crusher the material again, the raised material fully contact with the heat flow leaded by the induced wind system, proceed heat transfer, evaporative water, complete drying, discharge the material from the discharge hole, the extracted dusty moisture unified collect dust through the dust removal equipment.Fly ash dryer, this equipment designed aim at the fly ashs initial moisture is higher, proportion is less, and liquidity change bigger drying process than other materials.1, the dryer has strong resistance overload ability, large handling capacity, less fuel consumption, low drying cost.2, the dryer adopt the fair current way to dry, flue gas and the wet material into the dry machine from the same side, can use the high temperature flue gas to get very high evaporation intensity, the dryers outlet temperature is low, with high thermal efficiency.3, can change operating parameters according to different material properties, let the material in the dryer to form a stable fullface material curtain, heat exchange more fully.4, the new type feeding and discharging device, completely eradicate the phenomenon such as feeding jams, discontinuity, uneven, returning charge of the drum drying machine, and reducing the dust removal systems load.5, new type internal structure, strengthens the sweeping and heat conduction effect to the scattered materials, eliminates the sticky phenomenon of the cylinder body wall, adaptability stronger to the materials moisture and stickiness.Our factorys fly ash dryers are with compact structure, covers less area, working reliable, low energy consumption, high thermal efficiency, material drying effect is good, easy to realize automatic control, and need few operation staffs.1, low discharging air temperature, dust removal equipment use time long.2, adopt new type combined-type raising material device, can easy control the final moisture index according to users requirements.3, high automaticity degree, small transmission power, easy operation, operation stable.4, small investment, proceeds fast.5, fuel can adapt to the coal, oil and gas.Fly ash dryer technical parameters:Product specification（m）Processing power（t/h）Initial moisture（%）Final moisture（%）Host power（kw）Calorific value coal（kcal/kg）Inlet temperature（）1.51410-152738155500420101.81415-20273818.55500420102.02020-25273818.55500420102.22025-3