Materialization of Tianjin University 20 10 Postgraduate Entrance Examination and Original Outline

Description of business course outline for postgraduate entrance examination of Tianjin University

Of course not. : 826 Course Name: Principles of Chemical Engineering (including experiment or chemical transfer)

First, the overall requirements of the examination

This exam involves three parts: (1) course of chemical engineering principles, (2) experiment of chemical engineering principles, and (3) chemical engineering transfer. Among them, the first part of Chemical Engineering Principle course is compulsory (about 85%), and the second part of Chemical Engineering Principle Experiment and the third part of Chemical Engineering Transfer are optional (about 15%), that is, the chemical engineering principle experiment and chemical engineering transfer are parallel, and candidates can choose one of them to take the exam according to their own situation.

Candidates are required to fully grasp, understand and flexibly use the basic contents stipulated in the outline. Candidates are required to have certain skills in calculation, problem analysis and problem solving. The answer must be clearly written, the process must be detailed, and the symbols and units of physical quantities must be indicated. Don't answer questions on the test paper, the answers will be written on the special answer sheet.

Second, the content and proportion of the examination

(a) the content and proportion of chemical engineering principles course (125 points)

1. Fluid flow (20 points)

Basic equations of hydrostatics; Flow phenomenon of fluid (viscosity of fluid and concept of viscosity, concept of boundary layer); Fluid flow in pipes (continuity equation, Bernoulli equation and their applications); Flow resistance of fluid in pipeline (dimensional analysis, calculation of flow resistance in pipeline); Pipeline calculation (simple pipeline, parallel pipeline, branch pipeline); Flow measurement (pitot tube, orifice flowmeter, venturi flowmeter, rotor flowmeter).

2. Fluid conveying equipment (10)

Centrifugal pump (structure and working principle, performance description, selection, installation, operation and flow regulation); Other chemical pumps; Gas conveying and compression equipment (mainly centrifugal fans).

3. Separation of heterogeneous systems (12 points)

Gravity sedimentation (basic concept and gravity sedimentation equipment-dust sedimentation chamber); Centrifugal sedimentation (basic concept and centrifugal sedimentation equipment-cyclone separator); Filtration (basic concept, calculation of constant pressure filtration, filtration equipment).

4. Heat transfer (20 points)

Overview of heat transfer; Heat conduction; Correlation between convective heat transfer analysis and convective heat transfer coefficient (including steam condensation and boiling heat transfer); Heat transfer process analysis and heat transfer calculation (heat balance calculation, heat transfer rate calculation, total heat transfer coefficient calculation); The basic concept of radiation heat transfer; Heat exchanger (classification, type, calculation and design of tubular heat exchanger).

5. Distillation (16 point)

Vapor-liquid equilibrium of two-component solution; Principle and process of distillation; Calculation of two-component continuous distillation.

6. Absorption (15 points)

Gas-liquid equilibrium; Mass transfer mechanism and absorption rate; Calculation of absorption tower.

7 distillation and absorption tower equipment (8 points)

Tray type; Hydrodynamic performance of plate tower: packing type: hydrodynamic performance of packed tower.

8. Liquid-liquid extraction (9 points)

Liquid-liquid extraction phase equilibrium and extraction operation principle of ternary system: calculation of single-stage extraction process.

9. Drying (15 minute)

Properties and humidity chart of wet air; Basic concept of drying process, calculation of drying process (material balance, heat balance); Relationship between equilibrium and rate in drying process.

(two) the content and proportion of the experimental examination of chemical engineering principles (25 points)

1. The exam includes the following experiments.

Single-phase flow resistance experiment; Operation and performance test experiment of centrifugal pump; Performance measurement experiment of flowmeter; The experiment of constant pressure filtration constant: the experiment of convective heat transfer coefficient and its correlation constant; Distillation column experiment; Absorption tower experiment; Extraction tower experiment; Experiment of measuring tunnel drying rate curve.

2. The examination content involves the following aspects.

Experimental purpose and content, experimental principle, experimental process and device, experimental method, experimental data processing method, experimental result analysis, etc.

(three) the content and proportion of chemical transfer examination (25 points)

1. Derivation and simplification of differential equilibrium equation

Derivation and simplification of continuity equation (single component); Derivation and simplification of heat transfer differential equation: derivation and simplification of mass transfer differential equation.

2. Application of differential equilibrium equation

Differential equilibrium equations can be used to solve simple one-dimensional steady-state fluid flow problems, heat conduction problems and molecular mass transfer problems.

Note: Parts (2) and (3) are parallel, and candidates can choose one answer according to the situation.

Third, the types and proportions of test papers.

The problems in the course of Chemical Engineering Principles include conceptual problems and application problems. Conceptual questions are divided into fill-in-the-blank questions and multiple-choice questions, accounting for about 25%; Application questions include calculation questions and process analysis questions, generally 5 ~ 6 questions, accounting for about 60%. The questions in the experiment part of chemical engineering principle are fill-in-the-blank questions, multiple-choice questions and experimental design questions; The question type of chemical transfer part is derivative (or the combination of derivative and calculation). Chemical engineering principle experiment (or chemical engineering transformation) accounts for about 15%.

Four. Examination form and time

The examination papers are all written. The examination time is three hours (full mark 150).

Tianjin university postgraduate business examination outline

Of course not. : 839 course name: physical chemistry (including physical chemistry experiment)

First, the overall requirements of the examination

1. Master the meaning and scope of application of important basic concepts and principles in this course;

2. Master the application of physical and chemical formulas and the application conditions of formulas. Calculation problems need correct thinking. Concise steps;

3. Master the measurement of common physical quantities in physical chemistry experiments (including principles, calculation formulas and how to measure them). Can correctly use the commonly used physical and chemical instruments (principle, measurement accuracy, scope of use, matters needing attention)

Second, the examination content and proportion (key part)

1. gas, first law of thermodynamics, second law of thermodynamics (~22%)

Ideal gas state equation, Van der Waals equation, definition of compressibility factor.

The first and second laws of thermodynamics and their mathematical expressions; Calculation of W, Q, U, H, S, A and G in the process of pVT change, phase change and chemical reaction; Entropy increasing principle and three equilibrium criteria.

Understand the basic equations of thermodynamics and the simple application of Maxwell relation; Application of Kra-Buron Equation and Krzyk-Krzyk Equation.

2. Multi-component thermodynamics and phase equilibrium (~ 18%)

Partial molar quantity and the concept of chemical potential; Chemical potential expressions of ideal gas and ideal dilute solution: definition of fugacity and activity and calculation of activity.

Raoul's law and Henry's law; The concept of dilute solution dependence and its simple application.

Application of phase law; Single component phase diagram; Phase diagram of binary liquid and condensation system.

3. Chemical equilibrium (~ 10%)

Isothermal equation; Calculation of Gibbs function, standard equilibrium constant and equilibrium composition of standard molar reaction; Effects of temperature, pressure and inert gas on equilibrium; Principle of simultaneous balance.

4. electrochemistry (~ 10%)

Calculation of conductivity, molar conductivity, activity and activity coefficient in electrolyte solution; Application of conductance measurement.

The relationship between electromotive force of primary battery and thermodynamic function, Nernst equation; Application of electromotive force measurement: concepts of electrode polarization and overpotential.

5. Statistical thermodynamics (~6%)

Boltzmann distribution; Definition of particle partition function; Calculation of partition function of diatom translation, rotation and vibration: the relationship between energy, entropy and partition function of independent subsystems, Boltzmann entropy theorem.

6. Chemical Kinetics (~ 15%)

The concepts of reaction rate, elementary reaction, number of reaction molecules and reaction order.

Dynamic characteristics of zero-order, first-order and second-order reactions and application of rate equation integral: Arrhenius formula; Application of the integral formula of the rate equation of parallel and parallel reactions (first order): approximate treatment methods of complex reactions (steady-state approximation method, equilibrium approximation method).

Basic characteristics of catalysis; Characteristics of photochemical reaction and the first and second laws of photochemistry.

7. Interface phenomenon and colloid chemistry (~ 10%)

Additional pressure of curved liquid surface and Laplace equation: Kelvin equation and four metastable states: wetting and spreading phenomena and Young's equation; Chemical adsorption and physical adsorption; Langmuir adsorption isotherm.

Understand the optical properties, dynamic properties and electrical properties of colloid; Master the characterization of micelle structure and the aggregation of electrolyte to sol; Understand the stability and destruction of emulsion.

8. Experimental part (~ 10%)

1) thermostat adjustment and viscosity determination; 2) Determination of saturated vapor pressure of liquid; 3) Determination of reaction enthalpy; 4) Determination of equilibrium constant (reaction between ZnO and HCl aqueous solution); 5) Determination of molar mass by freezing point reduction method (naphthalene-benzene system); 6) Binary complete miscible liquid distillation curve (ethanol-n-propanol system, Abbe refractometer); 7) Phase diagram of binary condensation system; 8) Thermodynamics of galvanic cell (application of potentiometer); 9) Catalytic decomposition of hydrogen peroxide (KI catalyst); 10) saponification of ethyl acetate (application of conductivity meter); 1 1) measurement of surface tension (bubble maximum pressure method), the principle of the above experiment and the measurement method of physical quantities.

Third, the types and proportions of test papers.

60% is used for calculation, 30% for concept and 10% for experiment.

Four. Examination form and time

The examination papers are all written. The examination time is 3 hours.