《化工原理》（上下册，英文版）是根据教育部制定的《普通高等学校本科专业类教学质量国家标准》中化工类专业知识体系和服务国际化教学需求而编写的英语教材。本书借鉴了美国Warren L.McCabe、Julian C.Smith和Peter Harriott主编的Unit Operations of Chemical Engineering教材，并结合我国高等化工教育的实际和特色，以工程应用为背景，强调理论联系实际，注重培养学生的知识运用能力和工程观点。
本书以物料衡算、能量衡算、物系平衡和过程速率4个基本概念为基础，介绍了主要化工单元操作基本原理、“三传”过程、计算方法及典型单元设备。全书分上、下两册，上册包括：Introduction、Fluid Flow、Fluid Transportation Machinery、Heterogeneous Separation、Heat Transfer and Heat Exchange Equipment、Evaporation和Appendix；下册包括：Introduction to Mass Transfer Processes、Gas Absorption、Distillation、Liquid-liquid Extraction、Drying和Other Types of Mass Transfer Separation Processes。本书配有名词术语和难句的诵读，读者可扫描封底二维码获取音频。
本书可作为高等学校化工原理英语课程的教材，也可供来华留学生和有意出国深造的学生学习使用。

Introduction
0.1 Unit Systems and Unit Conversion
0.1.1 Unit Systems
0.1.2 Conversion of Unit Systems
0.2 Basic Laws and Relationship of Unit Operations
0.2.1 Mass Balance
0.2.2 Energy Balance
0.2.3 Process Balance and Rate
0.3 Features, Contents and Tasks of Principles of Chemical Engineering
Chapter 1 Fluid Flow
1.1 Basic Characteristics of Fluids
1.1.1 Continuity of Fluids
1.1.2 Compressibility of Fluids
1.2 Hydrostatics and Its Applications
1.2.1 Density of Fluids
1.2.2 Static Pressure of Fluids
1.2.3 Static Equilibrium Law of Fluids
1.2.4 Applications of Static Equilibrium Law of Fluids
1.3 Basics of Fluid Dynamics
1.3.1 Basic Concepts of Fluid Flow
1.3.2 Viscosity of Fluids
1.3.3 Flow Patterns and Reynolds Number
1.3.4 Separation of Flow Regions and Boundary Layers
1.3.5 Velocity Distribution of the Fluid in Tubes
1.4 Conservation Principles of Fluid Flow
1.4.1 Continuity Equation of Mass Conservation
1.4.2 Navier-Stokes Equation of Momentum Conservation
1.4.3 Bernoulli Equation of Mechanical Energy Conservation
1.5 Resistance Loss of Fluid Flow
1.5.1 Resistance Loss in Straight Pipes
1.5.2 Resistance Loss of Fittings or Valves
1.5.3 Calculation of Total Resistance Loss
1.6 Pipeline Design
1.6.1 Calculation of Simple Series Pipelines
1.6.2 Calculation of Parallel Pipelines
1.6.3 Calculation of Branch Pipes
1.6.4 Calculation of Pipe Networks
1.7 Applications of Fluid Dynamics
1.7.1 Flow Velocity Measurement
1.7.2 Flow Rate Measurement
Words and Expressions
Notes
Calculation Exercises
Short Assay Exercises
Chapter 2 Fluid Transportation Machinery
2.1 Centrifugal Pumps
2.1.1 Main Components and Working Principles of Centrifugal Pumps
2.1.2 Basic Equations of Centrifugal Pumps
2.1.3 Main Performance Parameters and Characteristic Curves of Centrifugal Pumps
2.1.4 Suction Lift of Centrifugal Pumps
2.1.5 Operating Point of Centrifugal Pumps and Regulation
2.1.6 Combined Pumps
2.1.7 Selection of Centrifugal Pumps
2.2 Other Types of Pumps
2.2.1 Reciprocating Pumps
2.2.2 Metering Pumps
2.2.3 Diaphragm Pumps
2.2.4 Gear Pumps
2.2.5 Screw Pumps
2.2.6 Vortex Pumps
2.3 Gas Transportation Machinery
2.3.1 Basic Concepts
2.3.2 Centrifugal Fans
Words and Expressions
Notes
Calculation Exercises
Short Assay Exercises
Chapter 3 Heterogeneous Separation
3.1 Characteristics of Particles and Particle Beds
3.1.1 Particle Characteristics
3.1.2 Characteristics of Granular Beds
3.2 Settling of Particles
3.2.1 Gravity Settlement and Equipment
3.2.2 Centrifugal Settlement and Equipment
3.2.3 Electric Settlement-Electrostatic Precipitator
3.3 Filtration
3.3.1 Basic Concepts of Filtration Processes
3.3.2 Basic Theories and Filtration Equations of Filtration Processes
3.3.3 Calculation of Filtration Processes
3.3.4 Determination of Filtration Constants
3.3.5 Filter Equipment
3.3.6 Filter Cake Washing
3.3.7 Production Capacity of Filters
Words and Expressions
Notes
Calculation Exercises
Short Assay Exercises
Chapter 4 Heat Transfer and Heat Exchange Equipment
4.1 Basic Concepts
4.1.1 Basic Heat Transfer Patterns and Mechanisms
4.1.2 Heat Transfer Modes and Heat Exchangers of Cold and Hot Fluids
4.1.3 Heat Carriers and Selection
4.2 Heat Conduction
4.2.1 Basic Concepts of Heat Conduction
4.2.2 Fourier's Law
4.2.3 Heat Conduction Coefficient
4.2.4 Steady Heat Conduction of Flat Wall
4.2.5 One-dimensional Steady Heat Conduction in Cylindrical Wall
4.3 Convective Heat Transfer
4.3.1 Convective Heat Transfer and Clas
4.3.2 Convective Heat Transfer Rate and Co