In order to improve the power generation of low-temperature waste heat utilization in cement kiln, Nanjing Kayin Energy Environmental Energy Co., Ltd. has developed the second and third generation cement kiln waste heat recovery power generation technology, and recently applied for national patents. The patent application numbers are 200720038566.9, 200720038567.3.
The second generation technology is mainly to optimize the heat recovery system of waste heat power generation, balance the heat utilization of the kiln head and the kiln tail boiler, and adopt the public high temperature superheater and the kiln head residual air recycling to improve the steam inlet superheat temperature and flow of the steam turbine without increasing Under the premise of the consumption of coal per ton of cement clinker, more power generation is added, and the power generation per ton of cement clinker is increased by 10% compared with the conventional system, reaching 36-42 Kw.h/t.
The third generation technology mainly optimizes the waste heat power generation heat system on the basis of the second generation technology, increases the high temperature exhaust gas exhaust port of the cement clinker cooler, and appropriately arranges the medium temperature exhaust gas exhaust port, and adopts a special form of kiln head boiler to do The cascade utilization of waste heat of waste gas achieves the goal of greatly increasing the amount of waste heat power generation with little increase in project investment. The power generation capacity per ton of cement clinker is increased by 20% compared with the conventional system, reaching 38-45Kw.h/t.
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