【正文】 ting methanol to evaporation, methanol vapor through the γAL 2O3 catalyst bed, vapor methanol dehydration to dimethyl etherby. This process is made of methanol process heating, evaporation, dehydration of methanol, dimethyl ether condensation and distillation etc. Completed for the following work: 1) Distillation tower used in separation of dimethyl ether and methanol recovery , column height of tower ,diameter, arrangement of column plate etc。 Key words: dimethyl ether, methanol, process design 1 目 錄 摘要 前言 化工設(shè)計(jì)課程設(shè)計(jì)任務(wù)書 ................................................................................................................ I 前 言 .........................................................................................................................................1 1 文獻(xiàn)綜述 .....................................................................................................................................1 二甲醚概述 ........................................................................................................................1 二甲醚的發(fā)展現(xiàn)狀 ....................................................................................................1 二甲醚的傳統(tǒng)領(lǐng)域的應(yīng)用及其拓展 ............................................................................1 國內(nèi)二甲醚市場簡況 ...........................................................................................................2 現(xiàn)狀 ..........................................................................................................................2 國內(nèi)市場預(yù)測 ...........................................................................................................4 國外二甲醚市場簡況 ...........................................................................................................5 現(xiàn)狀 ..........................................................................................................................5 國外市場預(yù)測 ...........................................................................................................6 原料說明 ............................................................................................................................7 二甲醚的主要技術(shù)指標(biāo) .......................................................................................................8 技術(shù)要求 ...................................................................................................................8 試驗(yàn)方法 ...................................................................................................................9 2 DME 產(chǎn)品方案及生產(chǎn)規(guī)模 .......................................................................................................... 11 產(chǎn)品品種、規(guī)格、質(zhì)量指標(biāo)及擬建規(guī)模 ............................................................................ 11 產(chǎn)品規(guī)格、質(zhì)量指標(biāo) ........................................................................................................ 11 產(chǎn)品方案分析及生產(chǎn)規(guī)模分析 .......................................................................................... 12 3 工藝流程介紹 ............................................................................................................................ 12 生產(chǎn)方法簡述 .................................................................................................................... 12 工藝流程說明 .................................................................................................................... 14 生產(chǎn)工藝特點(diǎn) .................................................................................................................... 16 主要工藝指標(biāo) .................................................................................................................... 16 二甲醚產(chǎn)品指標(biāo) ...................................................................................................... 16 催化劑的使用 ......................................................................................................... 17 4 主要塔設(shè)備計(jì)算及選型 ............................................................................................................... 17 汽化塔及其附屬設(shè)備的計(jì)算選型 ....................................................................................... 17 物料衡算 ................................................................................................................ 17 熱量衡算 ................................................................................................................ 19 理論板數(shù)、塔徑、填料選擇及填料層高度的計(jì)算 ..................................................... 21 汽化塔附屬設(shè)備的選型計(jì)算 .................................................................................... 25 合成塔及其附屬設(shè)備的計(jì)算選型 ....................................................................................... 26 物料衡算 ................................................................................................................ 26 合成塔的選取 選?。?............................................................................................... 26 熱量衡算及附屬設(shè)備的選型計(jì)算 ............................................................................. 26 精餾塔及其附屬設(shè)備的計(jì)算選型 ....................................................................................... 29 物料衡算 ................................................................................................................ 30 熱量衡算 ................................................................................................................ 30 2 理論塔板數(shù)的計(jì)算 .................................................................................................. 32 初餾塔 主要尺寸的設(shè)計(jì)計(jì)算 .................................................................................... 32 塔徑設(shè)計(jì)計(jì)算 .......................................................................................................... 34 填料層高度的計(jì)算 .................................................................................................. 35 附屬設(shè)備的選型計(jì)算 .......................................................................................