蒸发器设计说明书

合工大化工原理课程设计

KNO3水溶液三效并流蒸发系统设计

摘要:蒸发是化工生产中重要的单元操作,普遍应用于化工、医药、食

品等行业中。本次课程设计的任务是设计三效并流蒸发装置,将10% KNO3溶液浓缩至40%,年处理量为5×104吨。采用中央循环管型蒸发器。设计工作主要包括工艺设计计算,蒸发器传热面积优化编程,蒸发器工艺尺寸的设计计算及辅助设备的选型计算,主要设备的强度校核,管道及各种连接件的选型,工艺流程图及蒸发器装配图的绘制。

关键词:三效并流蒸发装置;蒸发;KNO3

Abstract: Evaporation is an important unit operation in chemical process.

It finds wide application in such fields as chemical industry, pharmaceutical industry, food industry and so on.

The task is to design a three-effect forward flow evaporation system to

concentrate 20,000 ton/year of KNO3 aqueous solution from 10% to 40%. Standard evaporator (evaporator with central circulation downcomer) was chosen. The major work includes calculation of the process parameters and the heat transfer area, determination of the size and structure of the evaporator, and selection of the ancillary facilities, as well as checking the strength of the main equipments and choosing appropriate pipes. The process flow chart and the assembly drawing of one evaporator were completed with the aid of Auto CAD.

Keyword: Three-effect forward flow evaporation; evaporation; KNO3

第一章 概述

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