【正文】 ..................................1 甲醇精餾工藝技術(shù)比較 ...................................................................................1 甲醇精餾工藝的概況 ......................................................................................5 精餾的目的和原理和精餾塔的操作和調(diào)節(jié) .........................................................6 粗甲醇的組成與精制要求 ..............................................................................6 工藝原理 ..........................................................................................................7 影響因素 ........................................................................................................10 精餾塔的產(chǎn)品質(zhì)量控制和調(diào)節(jié) ....................................................................11 甲醇的主要技術(shù)規(guī)格 ...........................................................................................12 甲醇的一般性質(zhì) ............................................................................................12 甲醇的沸點和蒸汽壓 ....................................................................................13 甲醇水系統(tǒng)的性質(zhì) .......................................................................................13 甲醇精餾工藝流程說明 .......................................................................................15 預(yù)精餾系統(tǒng) ....................................................................................................15 加壓精餾系統(tǒng) ................................................................................................15 常壓精餾系統(tǒng) ................................................................................................16 回收精餾系統(tǒng) ................................................................................................16 ..................................................................................17 計算參數(shù) ...............................................................................................................17 預(yù)精餾塔工藝計算 ................................................................................................18 物料衡算 .........................................................................................................18 全塔高度和塔徑的確定 .................................................................................19 加壓精餾塔工藝計算 ............................................................................................20 物料衡算 .........................................................................................................20 熱量衡算 .........................................................................................................23 理論塔板數(shù)計算 .............................................................................................25 精餾塔主要尺寸的設(shè)計計算 .........................................................................26 填料的選擇 .....................................................................................................31 塔徑設(shè)計的計算 .............................................................................................32 填料層高度的計算 .........................................................................................33 全塔高度的確定 .............................................................................................34 常壓精餾塔工藝計算 ............................................................................................37 物料衡算 .........................................................................................................37 熱量衡算 .........................................................................................................39 理論塔板數(shù)計算 .............................................................................................41 精餾塔主要尺寸的設(shè)計計算 .........................................................................43 填料的選擇 .....................................................................................................48 塔徑設(shè)計的計算 .............................................................................................48 填料層高度的計算 .........................................................................................49 全塔高度的確定 .............................................................................................50 回收精餾塔工藝計算 ............................................................................................53 物料衡算 .........................................................................................................53 熱量衡算 .........................................................................................................55 理論塔板數(shù)計算 .............................................................................................58 精餾塔主要尺寸的設(shè)計計算 .........................................................................60 填料的選擇 .....................................................................................................64 塔徑設(shè)計的計算 .............................................................................................65 填料層高度的計算 .........................................................................................66 全塔高度的確定 .............................................................................................67 筒體的厚度和封頭的厚度確定 .....................................................................69 粗甲醇預(yù)熱器 ........................................................................................................71 計算定性溫度，確定物理常數(shù) .....................................................................71 求溫差修正系數(shù) .............................................................................................72 計算所需的傳熱面積 .....................................................................................72 分別計算管程和殼程的傳熱系數(shù) .................................................................72 管壁溫度 Wt....................................................................................................74 計算管、殼程的壓力 降 .................................................................................75 泵的 選型 .......................................................................................................