工艺流程图设计的基本步骤(47页).ppt

ChemicalProcessDesign ;工艺流程图设计的基本步骤 1. 作工艺流程草图或示意图（方框图） 2. 作工艺物料流程图（物料衡算图）PFD 3. 作带控制点的工艺流程图 PID ;Introduction to Chemical Process Design;“Got a few problems going from lab-scale up to full-scale commercial”;;Equipment Description C-101 Feed Air Compressor E-101 Reactor Preheater E-102 Condenser E-103 Reboiler E-104 Condenser E-105 Reboiler E-106 Condenser P-101A/B Water Pump P-102A/B Reflux Pump;;Propylene (Stream 2), steam (Stream 4),and compressed air (Stream 6) are mixed and heated to 150 oC. The resultant stream (Stream 8) is sent to a catalytic packed bed reactor where propylene and oxygen react to form acrolein. The reactor effluent is quickly quenched to 50 oC with deionized water (Stream 13) to avoid further homogeneous oxidation reactions. Stream 12 is then sent to an absorber, T-101, where it is scrubbed with water and acrolein is recovered in the bottoms (Stream 15). The off gas, Stream 14, is sent to an incinerator for combustion. Stream 15 is then distilled in T-102 to separate acrolein and propylene from water and acrylic acid. The bottoms (Stream16) consisting of wastewater and acrylic acid are sent to waste treatment. The distillate (Stream 17) is sent to T-103 where propylene is separated from acrolein and the remaining water in the system. The distillate from T-103, contains 98.4% propylene. The possibility of recycling this stream can be investigated. The bottoms (Stream 19) is then sent to T-104 where acrolein is separated from water. Stream 21 is sent to waste treatment, and the distillate (Stream 20) consists of 98% pure acrolein.;初步设计（Preliminary Design）;;;;;;阀 组;第五章 化工工艺流程设计;第五章?? 化工工艺流程设计;5.1 概 述;作用：表达物料从原料到成品或半成品的工艺过程，及所使用的设备和机器。用于设计开始时的工艺方案的讨论，也可作为施工流程图的设计基础。;;;5.3 物料流程图 ;;5.4 带控制点的工艺流程图;设备示意图;5.4.1 设备的画法与标注;细实线 0.15～0.3 mm;5.4 带控制点的工艺流程图;5.4 带控制点的工艺流程图;5.4 带控制点的工艺流程图;5.4 带控制点的工艺流程图;测量点;;仪表位号; 施工流程图一般采用A1图幅，横幅绘制，特别简单的用A2图幅，不宜加宽和加长。;一、看标题栏和图例中的说明 ;二、掌握系统中设备的数量、名称及位号 ;三、了解主要物料的工艺