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1、2008 年大气课复习提纲请同学们多练习前三年的考题，考试的类型和难度类似。而且会有部分的重复。 Chap1，2，4，5，14，15： 这几章主要是考察一些重要的概念和理解 Chap 6 Point Sources Area Sources Fixed-box models：推导，计算 C=b+qL/vHDiffusion models：计算 z The Gaussian plume models（GPM） z Dispersion coefficients 查表 z Some modifications of the Basic GPM 选择合适的公式计算 Chap 10VOCs 的概念/来
2、源/危害 Control by Prevention Substitution：give examples Process Modification：give examples Leakage Control：give examples Condensation Adsorption: concept, calculation Absorption: concept, calculation Combustion: Three basic types of combustion Biofiltration: concept Chap 11H2S removal from petroleum a
3、nd natural gas SO2排放量的计算 SO2水洗/碱洗的问题Reactions of Forced-oxidation limestone wet scrubbing Problems and solution of Forced-oxidation limestone wet scrubbing 石膏排放量的计算 几种主要的脱硫方法的原理和优缺点 Chap 12NOX的危害 三种 NOX的产生机理 Control of nitrogen oxide emissions Modify the combustion processes Treat the combustion gas
4、 chemically SCR/SNCR：definition, reactions, 二者的优缺点，SCR 布置方式优缺点，用氨量的计算Chap 8,9, 13Concepts Lean burn Wet scrubber Aerodynamic diameter ESP Primary/Secondary particcles A/F TWC/FWC PM2.5 Inertia Separators Cyclones Re-entrainment driving velocity Alternative fuel EGR Questions Basic strategy of contro
5、l for particulate pollutants(three aspects)? Can TWC be applied in the treatment of diesel exhaust? Why? Please give out five major types of wet scrubbers and explain their work mechanism Equations For ESP: A =Q(1)/ p Final examination of Air Pollution Engineering for Class 20041. Explain following
6、technical terms (24 points, you can select 8 questions out of 10):1). Globe warming 2). Temperature inversions 3). ESP 4). HEPA 5). Lean burn 6). Plume rise 7). Wet scrubber 8). Photochemical smog 9). Thermal NO10). A/F ratio 2. Answer following questions (20 points, you can select 5 questions out o
7、f 6):1). Which are the main constituents for the ground level ozone formation?2). Please list five major types of wet scrubbers.3). How to control VOCs pollution by prevention?4).Please introduce the process of forced-oxidation Limestone Wet Scrubbing briefly.5). What is the most different points be
8、tween SCR and SNCR?6). Can TWC be applied in the treatment of emission of diesel engine? Why?l The characteristic of emission of diesel engine: Ample PM and Excessive O2, Lower temperature;l The difficulty in the reaction of solid-gas-solid.3. Calculation (40 points)1) A city has the following descr
9、iption: W=5km, L=15km, u=2m/s, H=800m. the upwind, or background, concentration of carbon monoxide is b=5g/m3. The emission rate per unit area is q=410-6g/sm2. What is the concentration c of carbon monoxide over the city?2) An ESP is designed to treat 540,000 acfm(actual cubic feet per minute) with
10、99% efficiency. Assuming an effective drift velocity of 0.12 m/s, calculate the required plate area and the number of plates3) We wish to treat an airstream containing 0.005mol fraction (0.5%, 5000ppm) toluene, moving at a flow rate 3000m3/h at 27 and 1 atm, so as to remove 99% of the toluene by wat
11、er absorption. Estimate the required water flow rate. Here Henrys law constant is 9800 atm. 4) A power plant flue gas contains 100010-6 （1000ppm）of NOx，and is emitted at a rate of 89.6m3/s at 546K and 1 atm. The NOx is 90%mol NO, balance NO2. A selective catalytic reduction system is to be used to r
12、emove the NOx. Calculate the minimum of ammonia needed in kg/h.4. Analysis (16 points)Now we focus on the acid rain in Guangzhou city. What is your understanding about this topic? Could you provide administrators with some advice? 2004环境工程大气污染控制工程试卷B4. Explain following technical terms (24 points, y
13、ou can select 8questions out of 10):1). Globe warming 2). Temperature inversions 3). ESP 4).PM105). Lean burn 6). VOCs 7). Wet scrubber 8). SCR 9).Thermal NO 10). A/F ratio 5. Answer following questions (20 points, you can select 5 questions out of 8):1). What are primary air pollutants and secondar
14、y air pollutants? Any example?2). What kinds of indoor air pollutants are mostly concerned by public?3). Which are the main constituents for the ground level ozone formation?4). How to control VOCs pollution by prevention?5). Please explain the formation of acid rain?6). Please introduct the process
15、 of forced-oxidation Limestone Wet Scrubbing briefly.7). What are basic principles of electrostatic Precipitators (six activities)?8). Can TWC be applied in the treatment of diesel exhaust? Please give the explaination.6. Calculation (40 points, you can select 4 questions out of 5)1) A power plant emits 60 kg of fly ash per hour from its main stack. The effluent flow rate in the stack is 1m3/sec. What is the concentration of the fly ash in discharged gas. Express your results in g/m3.2)
