附录一物料计算书

目概 物料衡算目的 物料衡算方法 总项目衡算 物目概 物料衡算目的 物料衡算方法 总项目衡算 物料衡算任务 乙烯合成工段 乙醇一段反应器（ 乙醇二段反应器（ 乙醇精馏塔（ VAC合成工段 1.4.3.1VAC合成反应器 VAC合成反应器 1.4.3.3（ VAC精制工段 （ VAC精制塔（ 醋酸精制塔（ 1.4.5总物料衡算 总 1.51.1概述本项目主要通过对玉米秸秆的资源化利用，并以玉米秸秆为主要原料，通过发酵、脱水、氧化等工艺合成纯度为99.86wt的乙酸乙烯酯，年产量为10在已确定化学生产工艺和流程后，由定性阶段转向定量阶段，对整个生产系统、生产车间，以及部分重要的生产单元进行物料衡算精以及产品收率等各项经济技术指标，从而定量地评述初步设计所选择的工艺路线、生产方法及工艺流程在经济上是否合理。1.2物料衡算目的工艺设计中，物料衡算是在工艺流程确定后进行的。目的是根据原料与产品之间的定量转化关系，计算原料的消耗量，1.1概述本项目主要通过对玉米秸秆的资源化利用，并以玉米秸秆为主要原料，通过发酵、脱水、氧化等工艺合成纯度为99.86wt的乙酸乙烯酯，年产量为10在已确定化学生产工艺和流程后，由定性阶段转向定量阶段，对整个生产系统、生产车间，以及部分重要的生产单元进行物料衡算精以及产品收率等各项经济技术指标，从而定量地评述初步设计所选择的工艺路线、生产方法及工艺流程在经济上是否合理。1.2物料衡算目的工艺设计中，物料衡算是在工艺流程确定后进行的。目的是根据原料与产品之间的定量转化关系，计算原料的消耗量，品和副产品的产量，生产过程中各阶段的消耗量以及组成，衡算、其他工艺计算及设备计算打下基础。对于已有装置，物料衡算可以弄清原料的来龙去脉，找出生产中的薄弱环节，理提供可靠的依据和明确方向，并可作为检查原料利用率及三废处理完善程度的一种手段。1.3物料衡算方法物料衡算是根据质量守恒定律，利用某进出化工过程中某些系统中的积累=输入-输出+生产-消耗式中，生成或消耗项是由于化学反应而生成或消耗的量；以是正值，也可以是负值，程；积累量为零时，称为稳定状态过程。稳定状态过程时，可以简化为：输入=输出-生成+消耗对无化学反应的稳定过程，又可表示为：1输入=输出物料衡算包括总质量衡算、组分衡算和元素衡算。各种衡算方法的适用情况如表1-11-1各衡算方法适用情由于系统中存在化学反应，我们主要采用总质量衡算的衡算方法，同时列出每种物料组分的质量流量便于查找和计算。1.4总项目衡算从玉米秸秆入厂到产品输出，其工艺路线可分为如下3个工段：乙烯合成工段、VAC合成工段、VAC精制工段。1.4.1物料衡算任务对于本厂，工艺采取年开工300输入=输出物料衡算包括总质量衡算、组分衡算和元素衡算。各种衡算方法的适用情况如表1-11-1各衡算方法适用情由于系统中存在化学反应，我们主要采用总质量衡算的衡算方法，同时列出每种物料组分的质量流量便于查找和计算。1.4总项目衡算从玉米秸秆入厂到产品输出，其工艺路线可分为如下3个工段：乙烯合成工段、VAC合成工段、VAC精制工段。1.4.1物料衡算任务对于本厂，工艺采取年开工300（7200小时）的连续操作，其中一年内的两月（64）用于固定的停车设备检修及紧急情况处理。物料衡算的主要任务在于：（1）VAC以及副产品的实际产量以及质量指标；（确定水、乙醇、醋酸的循环量及损失率等指标；（（（任务。2 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