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正压气力除灰系统是指以仓式泵为发送器,通过管道将粉煤灰输送到灰库的干式气力输送系统。系统包括进料装置、发送仓泵、管道、阀门、库顶分离装置、灰库气化装置、库底卸料装置、风机、程控装置等,采用PIC控制全自动运行;最大输送能力≥50t/h(粉煤灰),最大输送距离≥2000米(当量长度),适用于300MW及以下火电机组的干除灰。该系统是浙江省电力设备总厂自行开发研制,全部国产化的系统,至今已有数百台套运行于全国各地的火电厂,深得用户信赖。
The positive-pressure pneumatic ash removal system refers to a dry-type pneumatic conveying system in which a warehouse pump is used as a sender to transport fly ash to a ash store through pipelines. The system includes feeding device, sending chamber pump, pipeline, valve, reservoir top separation device, ash reservoir gasification device, bottom discharge device, fan, program control device, etc., using PIC to control automatic operation; maximum conveying capacity ≥50t/ h (fly ash), the maximum conveying distance ≥ 2000 meters (equivalent length), suitable for dry ash removal of 300MW and below thermal power units. This system is a self-developed and developed system of Zhejiang Electric Power Equipment Factory, and it is a totally domestically-made system. So far, there have been hundreds of sets of thermal power plants that have been operating in all parts of the country, which has won the trust of users.