Separation Processes
分离工程是化学工程专业的核心课程，研究混合物分离提纯的原理、设备与工艺设计。内容包括蒸馏（平衡级理论、精馏塔计算、连续精馏与间歇精馏、特殊精馏）、吸收（低浓度气体吸收、高浓度气体吸收、化学吸收）、萃取（液液萃取、萃取设备、超临界萃取）、吸附、干燥、结晶、膜分离等单元操作。学生将掌握各类分离过程的设计计算与选型方法。
Separation Processes is a core course for chemical engineering majors, studying principles, equipment, and process design for mixture separation and purification. Topics include distillation (equilibrium stage theory, distillation column calculations, continuous and batch distillation, special distillation), absorption (low-concentration and high-concentration gas absorption, chemical absorption), extraction (liquid-liquid extraction, extraction equipment, supercritical extraction), adsorption, drying, crystallization, and membrane separation. Students master design calculation and selection methods for various separation processes.
学生需设计一座连续操作的板式精馏塔，用于分离二元理想溶液（如乙醇-水、苯-甲苯等）。给定原料处理量、组成与分离要求，确定精馏塔的操作压力与回流比，进行物料衡算与热量衡算，计算理论塔板数与实际塔板数，确定塔径、塔高与板间距，选择塔板类型并进行流体力学验算。绘制精馏塔工艺流程图，提交完整的设计说明书。
Students design a continuous plate distillation column for separating a binary ideal solution (ethanol-water, benzene-toluene, etc.). Given feed flow rate, composition, and separation requirements, determine operating pressure and reflux ratio, perform material and energy balances, calculate theoretical and actual plate numbers, determine column diameter, height, and plate spacing, select plate type and conduct hydrodynamic verification. Draw a process flow diagram and submit a complete design specification.