【正文】 參賽隊(duì)伍：環(huán)衛(wèi)工團(tuán)隊(duì) 參賽題目： 20萬噸直餾柴油 /年氨精制裝置設(shè)計(jì) 所屬院校：廣東石油化工學(xué)院 I 目 錄 第 1 章 原始材料 ..................................................... 1 氣提塔進(jìn)出物料情況 ...................................................................................... 1 氣提塔熱負(fù)荷 .................................................................................................. 2 操作壓力 .......................................................................................................... 2 塔頂操作壓力 ........................................................................................ 2 塔底操作 壓力 ........................................................................................ 2 第 2 章 氣提塔設(shè)計(jì)計(jì)算 ............................................... 3 試選傳熱系數(shù)初始值 ...................................................................................... 3 氣提塔尺寸的確定 .......................................................................................... 3 平均溫差 ................................................................................................ 3 估算傳熱面積 ........................................................................................ 3 氣提塔降膜熱管尺寸 ............................................................................ 4 管數(shù)的確定 ............................................................................................ 4 塔徑的計(jì)算 ............................................................................................ 5 第 3 章 傳質(zhì)過程計(jì)算 ................................................. 6 列管內(nèi)氣速 ...................................................................................................... 6 氣體流人點(diǎn)氣速 .................................................................................... 6 氣體流出點(diǎn)氣速 .................................................................................... 6 氣速平均值 ............................................................................................ 6 流體周邊流量 .................................................................................................. 6 液體流入點(diǎn)周邊流量 ............................................................................ 7 液體流出點(diǎn)周邊流量 ............................................................................ 7 液體周邊流量平均值 ............................................................................ 8 液膜厚度 .......................................................................................................... 8 液體流入點(diǎn)液膜厚度 ............................................................................ 8 液體平均液膜厚度 ................................................................................ 9 液泛速度計(jì)算 .................................................................................................. 9 液體最小潤濕率計(jì)算 .................................................................................... 10 液膜停留時(shí)間和液膜平均速度 .................................................................... 11 第 4 章 復(fù)核傳熱系數(shù) ................................................ 13 管外蒸氣冷凝時(shí)的給熱系數(shù) 1? ................................................................... 13 管內(nèi)液體沿垂直壁面成膜下流時(shí)的給熱系數(shù) 2? ....................................... 14 總傳熱系數(shù) .................................................................................................... 14 II 第 5 章 傳熱面積 .................................................... 15 第 6 章 精度計(jì)算 .................................................... 15 第 7 章 零部件及穩(wěn)定性 .............................................. 16 塔壁厚的確定 ................................................................................................ 16 封頭的選擇 .................................................................................................... 16 塔高的計(jì)算 .................................................................................................... 16 塔設(shè)備的穩(wěn)定計(jì)算 ........................................................................................ 17 風(fēng)載荷 .................................................................................................. 17 塔底部截面的最大彎矩 ...................................................................... 17 裙座設(shè)計(jì) ........................................................................................................ 18 裙座尺寸 .............................................................................................. 18 基礎(chǔ)環(huán) .................................................................................................. 18 管板和折流板 ................................