提高丙烯腈回收率的一种新型急冷工艺和急冷塔

Quenching process and design of the quenching tower in acrylonitrile production in China were studied in order to decrease the polymerization loss of acrylonitrile in the quenching tower. Based on the research of acrylonitrile polymerization in the quenching tower, a new quenching process was proposed to avoid the disadvantages of the original process. Two kinds of internals were installed to improve the performance of the quenching tower. Through a series of air-flow and real-flow model experiments, the new quenching process and new design were showed to be successful in enhancing the mass and heat transfer in the vapor-liquid system and decreasing the loss of acrylonitrile.Industrial application showed satisfactory results of decrease of the acrylonitrile loss in the quenching tower by about 4.5% and increase of the acrylonitrile recovery of the whole plant by more than 4%.     

基于数据清洗和动态神经网络的风电机组齿轮箱油温预警方法研究

齿轮箱是风电机组运行的关键设备。针对风电机组齿轮箱故障发生频繁、运行维护成本高等问题,提出了一种基于数据采集与监控（SCADA）系统异常数据清洗和动态神经网络的建模方法,对风机齿轮箱油池温度进行了建模。随后采用统计过程控制方法分析残差,根据残差分布特征计算阈值上下限,实现了齿轮箱油池温度异常状态预警。最后以双馈式风力发电机组为研究对象进行建模分析并给出实例,验证了该模型对齿轮箱油池温度预警的实用性和有效性。