【正文】 浙 江 * * 學(xué) 院 畢業(yè)設(shè)計（論文） 題目： 發(fā)酵法年產(chǎn) 5 萬噸乙醇的工藝設(shè)計 姓 名 : 系 別、 專 業(yè) : 導(dǎo) 師 姓 名、職 稱 : 完 成 時 間 : 發(fā)酵法年產(chǎn) 5 萬噸乙醇的工藝設(shè)計 [摘 要 ]： 乙醇的生產(chǎn)過程包括原料除雜，粉碎，液化，糖化，除菌，發(fā)酵，精餾這幾個主要的過程 。 本設(shè)計簡述了從木薯原料預(yù)處理、液化、酶糖化到發(fā)酵生產(chǎn)后處理整個發(fā)酵 乙醇 生產(chǎn)工藝流程 ， 主要完成了 發(fā)酵段，精餾段的計算及附屬設(shè)備的選型。 [關(guān)鍵詞 ]： 乙醇 ； 發(fā)酵 ；精餾 III Technological Design of 50,000 tons by fermentation of ethanol Every Year. [Abstract]: Ethanol production process includs these major processes: raw material impurity, grinding, liquefied, saccharification, sterilization, fermentation, distillation. The design brief pretreatment of raw materials from cassava, liquefaction, saccharification enzyme fermentation production to postprocessing the entire production process,and the major assignments are calculated fermentation, distillation section and selecting of pumps and storage tanks. [Keywords]: Ethanol 。Fermentation。 Distillation IV 目 錄 摘 要 ................................................................................................................ II ABSTRACT ................................................................................................... III 1 概述 .............................................................................................................. 1 乙醇的性質(zhì)及質(zhì)量標(biāo)準(zhǔn) ........................................................................... 1 物理性質(zhì) ............................................................................................. 1 化學(xué)性質(zhì) ............................................................................................. 1 生化性 ................................................................................................. 1 質(zhì)量標(biāo)準(zhǔn) ............................................................................................. 1 乙 醇生產(chǎn)的意義及發(fā)展史 ....................................................................... 2 乙醇生產(chǎn)的意義 ................................................................................. 2 乙醇生產(chǎn)的發(fā)展 ................................................................................. 2 乙醇的應(yīng)用領(lǐng)域 ....................................................................................... 3 主要生產(chǎn)工藝 ........................................................................................... 3 合成法 ................................................................................................. 3 發(fā)酵法 ................................................................................................. 4 2 建廠可行性分析 .......................................................................................... 8 需求和擬建規(guī)模 ...................................................................................... 8 原料簡介 ............................................................................................. 8 木薯原料的優(yōu)勢 ................................................................................. 8 乙醇市場分析 ..................................................................................... 8 主要建設(shè)條件 ........................................................................................... 8 環(huán)境保護(hù)及廢物處理 ............................................................................... 8 企業(yè)組織管理 .......................................................................................... 8 資金籌措方式 .......................................................................................... 9 3 乙醇發(fā)酵工藝 ............................................................................................ 10 木薯的處理 ............................................................................................. 10 原料除雜 ........................................................................................... 10 原料粉碎 ........................................................................................... 10 原料輸送 ............................................................................................11 液化和糖化 ..............................................................................................11 液化 ....................................................................................................11 糖化 ................................................................................................... 12 乙醇發(fā)酵 ................................................................................................. 12 乙醇發(fā)酵常用的微生物 ................................................................... 12 酵母生長條件 ................................................................................... 13 酵母的培養(yǎng)工藝 ............................................................................... 14 V 發(fā)酵乙醇的機(jī)理 ............................................................................... 15 乙醇發(fā)酵工藝 ................................................................................... 15 乙醇發(fā)酵的成熟指標(biāo) ....................................................................... 15 空氣除菌與設(shè)備 .................................................................................... 16 4 物料衡算 .................................................................................................... 18 原料消耗的計算 ..................................................................................... 18 每噸 95%乙醇木薯干的消耗量 ....................................................... 18 每噸 95%乙醇 α淀粉酶的消耗量 ................................................... 18 每噸 95%乙醇糖化酶的消耗量 ....................................................... 18 醪液量的計算 ......................................................................................... 19 發(fā)酵過程的計算 ..................................................................................... 20 發(fā)酵罐的計算 ................................................................................... 20 發(fā)酵熱的計算 ................................................................