卧式搅拌釜放大设计

以反应器非几何相似、流体混和参数相近的放大准则设计了500L 卧式釜搅拌桨。该釜用于四氟乙烯分散聚合生产结果表明,与立式釜相比,具有反应时间短、分散液固相浓度高,树脂质量好等一系列优点。     

采用高性能搅拌设施生产适应市场的水泥

在欧洲和世界其它地区，CEMⅠ水泥(渡特兰水泥)日益为CEMⅡ水泥(有几个主要组份的渡特兰水泥)和CEMⅢ水泥(高炉矿渣水泥)所替代。为了满足生产具有特定粒径分布的高质量水泥的要求，现广为采用的不同水泥组分的混合粉磨工艺已经被单独粉磨然后再在高性能均化设施中进行均化的工艺所代替。依据情况不同，可以采用连续或间歇式搅拌机。文章描述了不同工艺技术．并介绍了最近的几个实例：     

搅拌设备设计的几点体会

从搅拌轴的支承条件、轴承间最佳距离的确定以及搅拌轴的稳定器等几个方面讨论 ,分析了其对搅拌设备设计的影响 ,并提出了相应的措施和方法。     

容器设计中搅拌装置的轴向力分析

搅拌装置在化工厂中应用很广，在磷肥、钛白粉装置中（15kt/a)使用较多，仅钛白粉装置中就大约有40－50台，如增稠结晶器，中和槽等，搅拌操作所涉及的因素极为复杂，浆叶形式的选择，从力学的观点来说，迄今研究不够，本文就搅拌装置产生的轴向力问题进行了初步研究。     

国内专利精选

氯化专用聚氯乙烯树脂的制备方法:CN112029138A//张文学(金川集团股份有限公司),公开日期:2020-12-04公开了一种氯化专用聚氯乙烯树脂的制备方法,包括以下步骤:取PVC聚合生产系统离心完毕的含水PVC树脂湿料加入带搅拌的密闭容器中,加入功能性有机溶剂搅拌混合均匀,再进行冷冻处理,将冷冻过的处在低温的初料进行微波加热、干燥,即得到氯化专用PVC树脂。     

Mathematical model of deoxidization with post stirring in a combined blowing converter

Dissolved oxygen in the steel at the terminal of the converter smelting process is the main cause for the formation of oxide inclusions, and the high terminal oxygen content worsens the steel cleanness. However, post stirring in a combined blowing converter can promote the carbon-oxygen reaction in the liquid steel and reduce the dissolved oxygen content at the terminal of the converter smelting process. Thus, the mathematical model of deoxidization in the post stirring process was obtained, and the rationa...     

深层水泥搅拌桩施工工艺及特点分析

深层水泥搅拌桩在软基加固处理时应用广泛,本文总结了其工作原理、施工工艺、注意事项及检测方法等。     

Adaptive neural network control for a class of continuous stirred tank reactor systems

In this paper, the control problem of continuous stirred tank reactors （CSTR） is studied. The considered CSTR are required to contain unknown functions and unknown dead zone input. An adaptive controller that uses the neural networks （NNs） is provided to solve the unknown terms. The proposed approach overcomes the effect of the dead zone input. The dead zone input in the systems is compensated for by introducing a new Lyapunov form and Young＇s inequality. The backstepping procedure is exploited to implement controller design with adaptation laws. The stability is analyzed using Lyapunov method. The performance is examined for CSTR to confirm the effectiveness of the proposed approach based on computer simulation.