摘要：为解决钢板标识保护装置自动喷涂过程中误喷涂导致正火钢板喷涂部位入炉后出现黑色氧化物、HQ钢板激光切割时遇涂料保护层出现跳火及设备维护区域安全性低等问题,利用桁架设备结构改造及程序优化等手段对原喷涂系统漏洞与设计缺陷进行了优化,优化后钢板标识保护装置运行状态良好,喷涂效果得到显著提高,创造了安全作业的环境,为产线钢板标识质量提供了重要保障。

摘要：The CuO/γ-Al2O3/cordierite catalyst, after being sulfated by sulfur dioxide (SO2) at 673 K, exhibits high activities for selective catalytic reduction (SCR) of nitrogen oxide (NO) with ammonia (NH3) at 573-723 K. The intrinsic kinetics of SCR of NO with NH3 over CuO/γ-Al2O3/cordierite catalyst has been measured in a fixed-bed reactor in the absence of internal and external diffusions. The experimental results show that the reaction rate can be quantified by a first-order expression with activation energy Eá of 94.01 kJ·mol-1 and the corresponding p re-exponential factor A′ of 3.39×108 cm3·g-1·s-1 when NH3 is excessive. However, when NH3 is not enough, an E ley-Rideal kinetic model based on experimental data is derived with Ea of 105.79 kJ·mol-1, the corresponding A of 2 .94×109 cm3·g-1·s-1, heat of adsorption-Hads of 87.90 kJ·mol-1 and the corresponding Aads of 9.24 cm3·mol-1. The intrinsic kinetic model obtained was incorporated in a 3D mathematical model of monolithic reactor, and the agreement of the prediction with experimental data indicates that the present kinetic model is adequate for the reac-tor design and engineering scale-up.

摘要：试验采用二次饱和-D最优设计,研究了氮肥、磷肥、密度3个因素对夏玉米产量的影响,建立了夏玉米产量形成的函数模型,获得了夏玉米产量高于9000kg/hm2,同时净产值超过3750元/hm2的优化栽培方案。在本试验条件下,3个因素对夏玉米产量的影响顺序为:密度>氮肥>磷肥。