我国硝酸生产中铂金属损耗情着钯台金中钯含量的增加,回收铂金的能力愈工序,最后制成回收装置。将此回收装置顺气 硝酸的工业化生产中,通常采用铂族金属流方向直接安装在铂金网之下,便可起到回收 作催化剂使NH3氧化,而后制造硝酸。我国常铂金的作用

第一节 概述 第二节 甘薯栽培的生物学基础 第三节 甘薯的栽培技术 第四节 甘薯的收获与贮藏

1.绪论 2.汽车发动机的总体构造与基本原理 3.汽油车中有害排放物的生成机理及其影响因素 4.低污染车用汽油机计 5.汽油车机外净化措施装置 6.柴油车排烟净化 7.柴油车排净化 8.汽车与内燃机噪声及控制 9.国内外汽车排放标准和测量方法

• 计算方法 • 科学与工程计算 构造数值算法的基本思想 近似替 代 离散化 递推化

2.5 Hermite插值 插值方法 NewtonLagrange与插值的不足 y=f(x),其 NewtonLagrange与插值多项式Pn(x)与Nn(x) 满足插值条件:P(xi)=nn(xi)=f(x)i=0,12.n Newton与 Lagrange插值多项式与y=f(x)在插值节点上有相同 的函数值“过点” 但在插值节点上y=f(x)与y=Pn(x)一般不”相切”, f(xi)≠n(x)光滑性较差 Hermite插值:求与y=f(x)在插值节点X1.n上具有相同函数 值及导数值(甚至高阶导数值)的插值多项式

WHATIS DESIGN??? A DESIGN IS PLAN FOR Manufacturing an artifact E A refrigerator or a rug Building the mean of manufacture E Afactory or a chemical plant Building a structure E A bridge or a baseball stadium Implementing an organization A hospital emergency room E A air transportation system

HEAT EXCHANGER DESIGN GOALS: Role of heat exchangers in chemical processing Basic concepts and terminology Types of heat exchangers Design methodology Sizing Design Rating

EQUILIBRIUM STAGED SEPARATIONS Single Stage Flash [Flash Drum] Distillation Simple Distillation Complex Distillation Non-Ideal Distillation Gas Absorption and Stripping Liquid-Liquid Extraction Multi-Effect Evaporation

CHEMICAL REACTOR CHARATERIZATION GOALS: Outline basic concepts Review reaction chemistry Develop basic definitions of performance Identify important reactor variables Review reaction thermodynamics

WHAT IS ASPEN? A computer program for steady-state process simulation (a.k. process Flowsheeting) Developed for the simulation of Chemical Petrochemical Processes Coal-based Processes Petroleum Refining Polymer Processes One of many commercially available flowsheeting programs such as PROII (Simulation Sciences) HYSIM (Hyprotech) ChemCad(Chemstation)