partunitlesson实用教案

1、小测试小测试(csh) 2甲基丁烷(dn wn): 2-methylbutane 环戊烯:cyclopentene 1,3,5己三烯: 1,3,5-hexatriene 己炔: hexyne 4-hydroxyl-2-butanone： 2-methyl-2-chloropropane:乙醇(y chn): methanol丙酸: Propionic acid 氧化钾:potacium oxide硫酸钠:sodium sulfateCH3CCH2CH2CH2OHO第1页/共10页第一页，共11页。Unit 2 Unit Operations Lesson 5 Classification of

2、 Unit Operations 第2页/共10页第二页，共11页。 Fluid flow（流体流动） This concerns （关于）the principles （原理，原则）that determine the flow or transportation of any fluid （流体）from one point to another. Heat transfer（热传递） This unit operation deals with（处理(chl)，涉及） the principles that govern（支配，控制，统制） accumulation and transf

3、er of heat and energy from one place to another.第3页/共10页第三页，共11页。 Evaporation（蒸发） This is a special case （特例(tl)，特殊情况）of heat transfer, which deals with the evaporation of a volatile solvent such as water from a nonvolatile solute such as salt or any other material in solution. Drying（干燥） In this op

4、eration volatile（挥发性的） liquids, usually water, are removed from solid materials第4页/共10页第四页，共11页。 Distillation（蒸馏）This is an operation whereby （by）components （组分）of a liquid mixture are separated by boiling because of their differences in vapor pressure（蒸汽压）. Absorption（吸收(xshu)）In this process a com

5、ponent is removed from a gas stream（气流，气体主流） by treatment with a liquid.第5页/共10页第五页，共11页。 Membrane separation（膜分离）This process involves the diffusion（扩散） of a solute（溶质(rngzh)） from a liquid or gas through a semipermeable（半渗透的） membrane barrier （薄膜隔层）to another fluid. Liquid-liquid extraction（液液萃取）I

6、n this case a solute in a liquid solution is removed by contacting with another liquid solvent which is relatively immiscible（不互溶的） with the solution.第6页/共10页第六页，共11页。 Liquid-solid leaching（浸取( jn q)） This involves treating a finely divided solid with a liquid that dissolves out （溶出）and removes a so

7、lute or some solutes contained in the solid. Crystallization(结晶)This concerns the removal of a solute such as a salt from a solution by precipitating （沉淀）the solute from the solution.第7页/共10页第七页，共11页。 Mechanical physical separation（机械分离(fnl)）These involves separation of solids, liquids, or gases by mechanical means, such as filtration（过滤）, settling（沉降）, and size reduction（破碎）, which are often classified as separate unit operations.第8页/共10页第八页，共11页。2009/089Homework Common unit operations第9页/共10页第九页，共11页。谢谢您的观看(gunkn)！第10页/共10页第十页，共11页。NoImage内容(nirng)总结小测