【正文】 年產(chǎn) 45 萬噸乙醇精餾工段工藝設(shè)計(jì) The Process Design of Ethanol Refining Section of 450 kt/a 目 錄 摘要 .................................................................................................................. I Abstract ............................................................................................................ II 引言 ..................................................................................................................1 第一章 緒論 ...................................................................................................2 國內(nèi)乙醇工業(yè)的發(fā)展現(xiàn)狀 ............................................................................................ 2 精餾塔的相關(guān)概述 ........................................................................................................ 2 精餾原理及其在化工生產(chǎn)上的應(yīng)用 ......................................................................... 2 精餾塔對塔設(shè)備的要求 ............................................................................................. 2 常用板式塔類型及本設(shè)計(jì)的選型 ............................................................................. 3 本設(shè)計(jì)所選塔的特性 ................................................................................................. 3 第二章 工藝流程選擇與 原材料 的計(jì)算 ............................................................5 乙醇精餾工 藝流程的概述 ............................................................................................ 5 乙醇原料的計(jì)算 .......................................................................................................... 5 理論玉米秸稈葡萄糖消耗量 ..................................................................................... 5 實(shí)際玉米秸稈耗量 ..................................................................................................... 6 第三章 精餾設(shè)備的設(shè)計(jì)內(nèi)容 ...........................................................................7 塔板的工藝設(shè)計(jì) ............................................................................................................ 7 精餾塔全塔物料衡算 ................................................................................................. 7 理論塔板數(shù)的確定 ..................................................................................................... 8 精餾塔操作工藝條件及相關(guān)物性數(shù)據(jù)的計(jì)算 ....................................................... 11 塔板主要工藝結(jié)構(gòu)尺寸的計(jì)算 ............................................................................... 17 塔板的流動性能校核 .................................................................................................. 21 氣相通過浮閥塔板的壓降 ...................................................................................... 21 淹塔校核 ................................................................................................................... 23 物沫夾帶校核 ........................................................................................................... 23 漏液校核 ................................................................................................................... 24 塔板的負(fù)荷性能 .......................................................................................................... 24 塔附件設(shè)計(jì) .................................................................................................................. 29 塔頂蒸氣出料管 ...................................................................................................... 29 筒體與封頭 ............................................................................................................... 29 裙座 ........................................................................................................................... 29 吊柱 .......................................................................................................................... 29 人孔 ........................................................................................................................... 30 塔總體高度的設(shè)計(jì) ...................................................................................................... 30 塔的頂部空間高度 ................................................................................................... 30 塔的底部空間高度 .................................................................................................. 30 塔體高度 ................................................................................................................... 30 全凝器的設(shè)計(jì) ............................................................................................................ 30 再沸器的設(shè)計(jì) .............................................................................................................. 31 接管的計(jì)算與選擇 ...................................................................................................... 31 第 四 章 自動控制系統(tǒng) .................................................................................... 34 第五章 廠區(qū)布置 ............................................................................................ 35 概述 .............................................................................................................................. 35 布置原則及方法 .......................................................................................................... 35 ........................................................................................... 35 滿足安全和衛(wèi)生要求 ............................................................................................... 35 ........................................................................................... 36 滿足施工和安裝的作業(yè)要求 ................................................................................... 36 滿足工廠發(fā)展的要求 ............................................................................................... 36 滿足豎向布置的要求 ............................................................................................... 36 結(jié)論 ................................................................................................................ 37 致謝 ....................................................