年产25万吨硫酸转化系统工艺设计

武汉工程大学邮电与信息工程学院

课程设计说明书

论文题目： 年产25万吨硫酸转化系统工艺设计

武汉工程大学邮电与信息工程学院课程设计说明书

目 录

武汉工程大学邮电与信息工程学院 ........................................................................... I 课程设计说明书............................................................................................................ I 摘 要 ............................................................................................................................ I Abstract....................................................................................................................... II 第一章 文献综述.......................................................................................................... 1 第二章 工艺说明书...................................................................................................... 5 2.1 概述 .................................................................................................................... 5 2.1.1 产品规模和规格 ....................................................................................... 5 2.1.2 工艺方案叙述 ........................................................................................... 5 2.2 装置设计说明 ................................................................................................... 5 2.2.1 工艺原理 ................................................................................................... 5 2.2.2 工艺流程说明 ........................................................................................... 6 2.2.3 主要设备选型说明 ................................................................................... 6 2.2.4 化工原材料规格及用量 ........................................................................... 6 第三章 转化工序物料衡算与热量衡算 ..................................................................... 7 3.1转化工序流程示意图及简要说明 .................................................................... 7 3.2确定各段进口温度及转化率 ............................................................................ 7 3.2.1温度与平衡转化率的关系 ........................................................................ 7 3.2.2最适宜温度与转化率关系 ........................................................................ 8 3.2.3确定操作线 ................................................................................................ 9 3.2.4各段进口温度及转化率 .......................................................................... 10 3.3.1进转化器一段气体量及成分 .................................................................. 11 3.3.2出一段气体量及成分 .............................................................................. 11 3.3.3出二段气体量及成分 .............................................................................. 12 3.3.4出三段气体量及成分 .............................................................................. 12 3.3.5出四段气体量及成分 .............................................................................. 12 3.4转化器各段的热量衡算 .................................................................................. 14 3.4.1转化一段反应热量和出口温度 .............................................................. 14

武汉工程大学邮电与信息工程学院课程设计说明书

3.4.2转化二段反应热量和出口温度 .............................................................. 16 3.4.3转化三段反应热量和出口温度 .............................................................. 18 3.5 转化器的计算................................................................................................... 23 3.5.1转化器的直径计算 .................................................................................... 23 3.5.2 转化器的高度计算 ................................................................................... 24 第四章 环境保护与治理建议 ................................................................................... 25 4.1 三废主要来源 ................................................................................................. 25 4.1.1 废气 ......................................................................................................... 25 4.1.2 废水 ......................................................................................................... 25 4.1.3 矿渣 ......................................................................................................... 25 4.2 三废处理方案 ................................................................................................. 25 4.2.1 废气 ......................................................................................................... 25 4.2.2 废水 ......................................................................................................... 26 4.2.3 废渣 ......................................................................................................... 26

武汉工程大学邮电与信息工程学院课程设计说明书

摘 要

本设计进行25万吨H2SO4/年转化系统工艺设计，根据进口原料气的组成，平衡曲

线和最适温度曲线以及催化剂的起燃温度、使用温度大致估计四段转化过程的操作线，再画出X—T平衡曲线和最适温度曲线，根据操作线来进行物料衡算和热量衡算，如果设定值和实际计算值相差太大，需要用方差的方法重新设定操作曲线来计算，直到设计值和计算值差不多，画出硫酸工艺流程图和一次转化工段流程图。 关键词：硫酸；转化工艺；设计

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武汉工程大学邮电与信息工程学院课程设计说明书

Abstract

The design of 250,000 tons H2SO4 of every year conversion system is in process design, according to the composition of feed gas imports, balance curve , the optimum temperature curve ,catalyst light-off temperature and the temperature generally estimated using four paragraphs into the operation of the process line, then draw X-T equilibrium curve and the optimal temperature curve, depending on the operating line to complete the material balance and heat balance, if the calculated value is too large different between the value and the actual,you need to reset curve operations with the method of the variance ,and than calculate until that the Design values and calculated values is similar , draw the flow chart of sulfuric acid and a conversion section in flow chart. Key word: H2SO4；conversion process； design

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