化工专业英语试题
河北科技大学理工学院2009——2010学年第二学期
《化工专业英语》考试试卷
一、将下列单词或词组译成汉语(20%,每个1分).
3—nitrotoluene | extractive agent |
centrifugation | civil engineer |
partial pressure | boundary layer |
bubble phase | buffer layer |
boiling bed | dehumidification |
streamlines flow sensible heat | original temperaturecatalytic cracking |
internal energy pressure drop particulate fluidization internal energy |
二、将下列单词或词组译成英语(10%,每个1分).
单元操作 | 二氧化碳 |
化工专业英语试题
三、阅读理解(10%,每题2分)。
Thefirstproductsgivenoffduringthedistillationofpetroleumaregaseous.Theyaremainlyhydrocarbonshavingoneto five carbonatomswhich areusuallyseparatedfromeachotherby chemicalmethods.
四、将下列句子译成汉语(30%,每题6分)。
(1)Dehumidificationof aircanbeeffectedby
bringing it into contact with a cold surface, either liquid or solid. |
(2)Athighvelocitiestwoseparatephasesareformed;thecontinuousphasewhichis oftenreferredtoasthedense or emulsionphase,andthediscontinuousphaseknown asthelean(phase)orbubblephase.
化工专业英语试题
(3)Thereare two principal typesofflowwhichwillbediscussedindetailnamelystreamlinesandturbulentflow .
(4)Ifthe processiscarriedout adiabaticallyallthe energy addedtothesystemappearsin thegasand its temperaturerises.
(5)When the frictional drag on the particles
|
ged.
五、阅读回答题(20%)。 |
根据短文内容回答问题。(答题中所涉及的文字描述均使用中文) Forexample,ethylalcoholand water forma binaryaz
eotropeat0。89molefractionalcohol,sothatthisis the r
ichestalcoholsolutionthatcanbe recoveredby s
化工专业英语试题
impledistillation.Additionofbenzeneasanazeotropicagentyieldsadistillateproductconsistingofa ternaryazeotrope。Thebottoms(釜底产物)isthedesiredpurealcohol。Sufficientalcoholis lost in theternaryazeotropetorequireitsrecovery。Oncondensation,theternaryazeotropein thedistillatesplitsintotwoliquidphases.Thebenzene-richphaseisreturnedtothe firstdistillationcol
umn, while the water-rich phase is sent to a second column. In this second column, the distillate is again the t |
olumnisanaqueoussolutionof alcohol。Itissentto a thirdcolumnthatproducesthewater—alcoholazeotropeasthedistillateandpurewateras the bottoms。Thisdistillateis mixedwiththefeed tothefirstcolumn.Thus,theneteffectof theprocessis
to produce pure alcohol and pure water from the alc | |
ohol-water azeotrope. |
|
化工专业英语试题
1.无水乙醇为什么不能采用简单精馏的方法制取?(3分)
2.简单精馏方法得到的最大浓度的乙醇溶液中含乙醇的质量百分数
是多少?(4分)
3.根据流程描述,将流程图补充完整,并标出每个流股所含的组分名称。 (1
3分)
1 | 1 | 1 |
U
A | S | S2 | S3 |
U1
S1 | T1 | 2 | S4 | S7 | T2 | 2 | S5 | S8 |
T3 2 | ||||||||
|
化工专业英语试题
六、将下面摘要翻译成英语(10%)
采用LH-10催化剂制备了三醋酸甘油酯(Glyceryltriacetate),探索了反应温度、反应时间、催化剂用量等因素对反应的影响。结果表明:温度范围105℃~125 ℃、时间5h、LH-10为30%时醋酸甘油酯的收率达95%。