【正文】 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 efficiency and thermal efficiency. Second, the characteristics of suspension preheater kiln Suspension preheater kiln characteristic is in after a short length of rotary kiln installed suspension preheater, make originally in the states with accumulation plume material preheating and part of carbonate deposing process, moved to suspension 2 preheater through suspension state within a state of suspension, so the raw with heat flow powder, fully contact with the gas and solid phase interface big, heat transfer speed, high efficiency, improve the kiln production ability, reduce the heat consumption of clinker burn. At the same time it still has few movement part, accessory equipment, maintenance is simpler, small area is lesser, investment costs lower advantages. Three, suspension preheater the position and function Suspension preheater mainly cyclone preheater and made tube preheater two kinds. Tube preheater has now made tends to eliminated. Pre by cyclone preheater depose kiln as preheating unit equipment. Constitute a cyclone preheater heat transfer unit equipment is mainly a whirlwind tube and tube at various levels between whirlwind of connecting pipeline (also called heat pipe). The main function of suspension preheater is fully utilize rotary kiln and the drain of deposing furnace hot airflow which heat enthalpy heat raw, make preheated and part, and then into carbonate deposition of deposing furnace or rotary kiln, continue the heating deposition burn plete clinker task. So it must have contentious, solid twophase can fully scattered uniform, rapid heat transfer, efficient separation and three functions. Only these three functions, and both of trying to make highlyeffective, can maximize thermal for whole kiln system, high quality, high efficiency, low consumption and stable production create conditions. Cyclone preheater functions to dispersing materials in hot airflow, uniform, gassolid in heat and separation. Its performance quality mainly displays in whether has the high thermal efficiency, low, separation of resistance and good sealing performance to reduce internal and external air leakage, etc. Cyclone preheater is by a whirlwind tube and upper and