附錄一物料計算書

目概 物料衡算目的 物料衡算方法 總項目衡算 物目概 物料衡算目的 物料衡算方法 總項目衡算 物料衡算任務 乙烯合成工段 乙醇一段反應器（ 乙醇二段反應器（ 乙醇精餾塔（ VAC合成工段 1.4.3.1VAC合成反應器 VAC合成反應器 1.4.3.3（ VAC精制工段 （ VAC精制塔（ 醋酸精制塔（ 1.4.5總物料衡算 總 1.51.1概述本項目主要通過對玉米秸稈的資源化利用，并以玉米秸稈為主要原料，通過發(fā)酵、脫水、氧化等工藝合成純度為99.86wt的乙酸乙烯酯，年產(chǎn)量為10在已確定化學生產(chǎn)工藝和流程后，由定性階段轉(zhuǎn)向定量階段，對整個生產(chǎn)系統(tǒng)、生產(chǎn)車間，以及部分重要的生產(chǎn)單元進行物料衡算精以及產(chǎn)品收率等各項經(jīng)濟技術(shù)指標，從而定量地評述初步設計所選擇的工藝路線、生產(chǎn)方法及工藝流程在經(jīng)濟上是否合理。1.2物料衡算目的工藝設計中，物料衡算是在工藝流程確定后進行的。目的是根據(jù)原料與產(chǎn)品之間的定量轉(zhuǎn)化關(guān)系，計算原料的消耗量，1.1概述本項目主要通過對玉米秸稈的資源化利用，并以玉米秸稈為主要原料，通過發(fā)酵、脫水、氧化等工藝合成純度為99.86wt的乙酸乙烯酯，年產(chǎn)量為10在已確定化學生產(chǎn)工藝和流程后，由定性階段轉(zhuǎn)向定量階段，對整個生產(chǎn)系統(tǒng)、生產(chǎn)車間，以及部分重要的生產(chǎn)單元進行物料衡算精以及產(chǎn)品收率等各項經(jīng)濟技術(shù)指標，從而定量地評述初步設計所選擇的工藝路線、生產(chǎn)方法及工藝流程在經(jīng)濟上是否合理。1.2物料衡算目的工藝設計中，物料衡算是在工藝流程確定后進行的。目的是根據(jù)原料與產(chǎn)品之間的定量轉(zhuǎn)化關(guān)系，計算原料的消耗量，品和副產(chǎn)品的產(chǎn)量，生產(chǎn)過程中各階段的消耗量以及組成，衡算、其他工藝計算及設備計算打下基礎。對于已有裝置，物料衡算可以弄清原料的來龍去脈，找出生產(chǎn)中的薄弱環(huán)節(jié)，理提供可靠的依據(jù)和明確方向，并可作為檢查原料利用率及三廢處理完善程度的一種手段。1.3物料衡算方法物料衡算是根據(jù)質(zhì)量守恒定律，利用某進出化工過程中某些系統(tǒng)中的積累=輸入-輸出+生產(chǎn)-消耗式中，生成或消耗項是由于化學反應而生成或消耗的量；以是正值，也可以是負值，程；積累量為零時，稱為穩(wěn)定狀態(tài)過程。穩(wěn)定狀態(tài)過程時，可以簡化為：輸入=輸出-生成+消耗對無化學反應的穩(wěn)定過程，又可表示為：1輸入=輸出物料衡算包括總質(zhì)量衡算、組分衡算和元素衡算。各種衡算方法的適用情況如表1-11-1各衡算方法適用情由于系統(tǒng)中存在化學反應，我們主要采用總質(zhì)量衡算的衡算方法，同時列出每種物料組分的質(zhì)量流量便于查找和計算。1.4總項目衡算從玉米秸稈入廠到產(chǎn)品輸出，其工藝路線可分為如下3個工段：乙烯合成工段、VAC合成工段、VAC精制工段。1.4.1物料衡算任務對于本廠，工藝采取年開工300輸入=輸出物料衡算包括總質(zhì)量衡算、組分衡算和元素衡算。各種衡算方法的適用情況如表1-11-1各衡算方法適用情由于系統(tǒng)中存在化學反應，我們主要采用總質(zhì)量衡算的衡算方法，同時列出每種物料組分的質(zhì)量流量便于查找和計算。1.4總項目衡算從玉米秸稈入廠到產(chǎn)品輸出，其工藝路線可分為如下3個工段：乙烯合成工段、VAC合成工段、VAC精制工段。1.4.1物料衡算任務對于本廠，工藝采取年開工300（7200小時）的連續(xù)操作，其中一年內(nèi)的兩月（64）用于固定的停車設備檢修及緊急情況處理。物料衡算的主要任務在于：（1）VAC以及副產(chǎn)品的實際產(chǎn)量以及質(zhì)量指標；（確定水、乙醇、醋酸的循環(huán)量及損失率等指標；（（（任務。2 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