【正文】 陜西理工學(xué)院畢業(yè)設(shè)計年產(chǎn) 40 萬噸二甲醚工藝設(shè)計畢業(yè)論文目錄1 概 述 .................................................................................................................1 二甲醚的用途 .............................................................................................1 設(shè)計依據(jù) .....................................................................................................1 技術(shù)來源 .....................................................................................................1 液相甲醇脫水法制二甲醚 ..................................................................1 氣相甲醇脫水法制二甲醚 ..................................................................1 合成氣一步法生產(chǎn)二甲醚 ..................................................................2 二氧化碳加氫直接合成二甲醚 ..........................................................2 催化蒸餾法制二甲醚 ..........................................................................2 本設(shè)計采用的方法 ..............................................................................3 原料及產(chǎn)品規(guī)格 .........................................................................................3 設(shè)計規(guī)模和設(shè)計要求 .................................................................................32 技術(shù)分析 ...........................................................................................................4 反應(yīng)原理 .....................................................................................................4 反應(yīng)條件 .....................................................................................................4 反應(yīng)選擇性和轉(zhuǎn)化率 .................................................................................4 催化劑的選擇 .............................................................................................43 反應(yīng)器的結(jié)構(gòu)計算 ...........................................................................................5 物料衡算 .....................................................................................................5 計算催化劑床層體積 .................................................................................5 反應(yīng)器管數(shù) .................................................................................................5 熱量衡算 .....................................................................................................54 二甲醚精餾塔結(jié)構(gòu)計算 ...................................................................................8 甲醚精餾塔的物料衡算及理論板數(shù) .........................................................8 實際板層數(shù)的求取 .....................................................................................9 精餾塔的工藝條件及有關(guān)物性數(shù)據(jù)的計算 ...........................................10 操作壓力的計算 ................................................................................10 操作溫度計算 ....................................................................................10 平均摩爾質(zhì)量計算 ............................................................................11 平均密度計算 ....................................................................................11 液體平均表面張力的計算 ................................................................13 液體平均粘度 ....................................................................................13 精餾塔的塔體工藝尺寸計算 ...................................................................13 提餾段塔徑的計算 ............................................................................15 精餾塔有效高度的計算 ....................................................................16 塔板主要工藝尺寸的計算 .......................................................................16 溢流裝置計算 ....................................................................................16 塔板布置 ............................................................................................17陜西理工學(xué)院畢業(yè)設(shè)計 塔板的流體力學(xué)驗算 ...............................................................................18 塔板壓降 ............................................................................................18 液面落差 ............................................................................................19 液沫夾帶 ............................................................................................19 漏液 ....................................................................................................19 液泛 ....................................................................................................19 塔板負(fù)荷性能圖 .......................................................................................19 漏液線 ................................................................................................19 液沫夾帶線 ........................................................................................20 液相負(fù)荷下限線 ................................................................................20 液相負(fù)荷上限線 ................................................................................21 液泛線 ................................................................................................21 精餾塔接管尺寸計算 ...............................................................................22 塔頂蒸氣出口管的直徑 ....................................................................22 回流管的直徑 ....................................................................................22 進(jìn)料管的直徑 ....................................................................................22 塔底出料管的直徑 ............................................................................235 甲醇精餾塔結(jié)構(gòu)計算 .....................................................................................24 設(shè)計方案的確定 .......................................................................................24 精餾塔的物料衡算 ...................................................................................24 原料液及塔頂和塔底的摩爾分率 ....................................................24 原料液及塔頂和塔底產(chǎn)品的平均摩爾質(zhì)量 ....................................24 物料衡算 ............................................................................................24 塔板數(shù)的確定 ...........................................................................................24 理論板層數(shù)的