【正文】 Wt% 95 ②精甲醇收率：%③廢水中甲醇含量：50ppm：①編寫計(jì)算說(shuō)明書，其中包括綜述，工藝路線選擇，物料衡算與工藝計(jì)算，主要塔設(shè)備計(jì)算，熱量衡算等。 摘 要甲醇最早由木材和木質(zhì)素干餾制的，故俗稱木醇，這是最簡(jiǎn)單的飽和脂肪組醇類的代表物。略有酒精氣味。近年來(lái)，世界甲醇的生產(chǎn)能力發(fā)展速度較快。由甲醇轉(zhuǎn)化為汽油方法的研究成果，從而開(kāi)辟了由煤轉(zhuǎn)換為汽車燃料的途徑。甲醇化工已成為化學(xué)工業(yè)中一個(gè)重要的領(lǐng)域。關(guān)鍵詞：甲醇，精餾，物料衡算，熱量衡算目 錄1 總 論 ..............................................................................................................................1 概況 .........................................................................................................................1 甲醇的性質(zhì)和用途 ..........................................................................................1 甲醇精餾工藝技術(shù)比較 ...................................................................................4 甲醇精餾工藝的概況 ......................................................................................7 精餾的目的和原理和精餾塔的操作和調(diào)節(jié) .........................................................8 粗甲醇的組成與精制要求 [1] ...........................................................................8 工藝原理 [7] .....................................................................................................10 影響因素 [7] .....................................................................................................13 精餾塔的產(chǎn)品質(zhì)量控制和調(diào)節(jié) [7] .................................................................14 甲醇的主要技術(shù)規(guī)格 [1]........................................................................................15 甲醇的一般性質(zhì) ............................................................................................15 甲醇的沸點(diǎn)和蒸汽壓 ....................................................................................16 甲醇水系統(tǒng)的性質(zhì) .......................................................................................16 甲醇精餾工藝流程說(shuō)明 .......................................................................................18 預(yù)精餾系統(tǒng) ....................................................................................................18 加壓精餾系統(tǒng) ................................................................................................18 常壓精餾系統(tǒng) ................................................................................................19 回收精餾系統(tǒng) ................................................................................................19 ..................................................................................20 計(jì)算參數(shù) ...............................................................................................................20 預(yù)精餾塔工藝計(jì)算 ................................................................................................21 物料衡算 .........................................................................................................21 全塔高度和塔徑的確定 [5] ..............................................................................22 加壓精餾塔工藝計(jì)算 [3] ........................................................................................23 物料衡算 .........................................................................................................23 熱量衡算 [3] ......................................................................................................26 理論塔板數(shù)計(jì)算 [7] ..........................................................................................28 精餾塔主要尺寸的設(shè)計(jì)計(jì)算 .........................................................................29 填料的選擇 .....................................................................................................34 塔徑設(shè)計(jì)的計(jì)算 .............................................................................................34 填料層高度的計(jì)算 .........................................................................................36 全塔高度的確定 [5] ..........................................................................................37 常壓精餾塔工藝計(jì)算 ............................................................................................39 物料衡算 .........................................................................................................39 熱量衡算 [3] ......................................................................................................42 理論塔板數(shù)計(jì)算 [7] ..........................................................................................44 精餾塔主要尺寸的設(shè)計(jì)計(jì)算 .........................................................................45 填料的選擇 .....................................................................................................50 塔徑設(shè)計(jì)的計(jì)算 .............................................................................................51 填料層高度的計(jì)算 .........................................................................................52 全塔高度的確定 [5] ..........................................................................................53 回收精餾塔工藝計(jì)算 ............................................................................................55 物料衡算 .........................................................................................................55 熱量衡算 [3] ......................................................................................................58 理論塔板數(shù)計(jì)算 [7] ..........................................................................................60 精餾塔主要尺寸的設(shè)計(jì)計(jì)算 .........................................................................62 填料的選擇 .....................................................................................................67 塔徑設(shè)計(jì)的計(jì)算 .............................................................................................68 填料層高度的計(jì)算 .........................................................................................69 全塔高度的確定 .............................................................................................70 筒體的厚度和封頭的厚度確定 .....................................................................72 粗甲醇預(yù)熱器 [2] ....................................................................................................73 計(jì)算定性溫度，確定物理常數(shù) .....................................................................73 求溫差修正系數(shù) .