【正文】 cause when s/a When separation efficiency, reduce more when s/a separation efficiency increase when. 6 and the influence of tube diameter With the expansion of inner cylinder diameters, the resistance coefficient and separation efficiency of different diameter reduced, including D d/a cylinder。 gt。 Separation efficiency (too much), also don39。 Airflow around the tangent says with spiral type cylinder. Due to import can make spiral into a whirlwind of cylinder, air passage gradually narrowed to help to reduce the distance of inner particles move, the distance to increase airflow exhaust, avoid short circuit, can improve the separation efficiency. But also has a deal with pressure loss of air, the advantages of small, reason often used. 5, tube insertion depth The increase of steelflue insert depth, the resistance coefficient and separation efficiency is the increase of different processes. Insert depth, and imported high tube ratio of s/a = o. range, low resistance coefficient little change, and separation efficiency increases slightly, so sure of separation efficiency should be emphasized the intermediate level resistance reduction whirlwind cylinder should be in s/a or so, and had better not amp。 Another is larger, solid material, quality is out of shape not easily. So, when the dusty air role to by centrifugal force whirlwind tube wall enrichment, it was a gas centrifugal and thus dust in mechanics have conditions will air extrusion, and concentrated in the hollow, and airflow is attached with a layer of dust in. When the dusty airflow movement, dust, a force for air, the motion of local change airflow。t have heat transfer function, and should have the highest possible gassolid separation function。 Whirlwind tube feeding at a higher level under proper positions of the pipe, air valve installed a locked not only keep the role is separated from the superior a whirlwind canister to expedite raw through the heat pipe, and can maximize prevent lower the 3 heat whirlwind canister out under shortcircuit feed tube flows into superior a whirlwind tube, cause has been separation of secondary float in the sky, reduce powder raw superiors separation efficiency。1 中文 4064 字 suspended preheatingtechnique A, suspended preheatingtechnique superiority Traditional dry process rotary kiln production of raw cement clinker, burn, deposed and preheat the plume are pleted in the process. Rotary kiln as burning into equipment, because it can provide section temperature distribution was homogeneous temperature field, and can ensure material at high temperatures have enough retention time, still can meet the requirements. But as heat and mass transfer equipment is not ideal, to need to heat larger preheating, deposing process is very not adapt. This is mainly due to the accumulation in kiln stove bottom of materials, from material layer surface through air, air with material contact area small, heat transfer efficiency low be caused by. Meanwhile, the stove deposing zone in feeding powder layered accumulation state, material layer to the internal deposition out carbon dioxide small area, the spread of airflow resistance, slow, and material layer internal granules are carbon dioxide gas membrane packages, carbon dioxide, differential pressure deposition temperatures the demand is high, it has increased the difficulty of carbonate deposition and reduce the deposition rate. Suspension preheater technical breakthroughs, fundamentally changed materials heat transfer condition, preheat the process of material accumulation state will the stove to warmup and deposing process, were moved to suspension preheater and deposition furnace inner state of suspension. Due to suspension in heat flow of materials, and airflow greatly increased the contact area, so the heat transfer speed fast, heat transfer efficiency is very high. Meanwhile, raw fuel at powder and suspended configuration, mixing, fuel burning hot timely to raw material and make the rapid deposition. Thus, due to rapid, heat transfer, mass transfer substantially improve the production e