摘要：甲醇是重要的基础有机化工原料，作为固体煤或气体天然气转化成的液体清洁燃料，便于储运和运输，是重要的能源载体。是近年来煤化工和天然气化工发展的主要产品，甲醇化学和甲醇化工也发展成为化学工业与能源工业的一个重要领域。47459

    本文根据当前甲醇生产工艺及其膜分离制CO工艺流程和毕业设计要求，综合运用监测传感技术、PLC控制技术和组态软件技术，设计了一套甲醇膜分离制CO装置的控制系统。具体包括总体方案的设计，传感器等关键外围设备选型，PLC的IO口分配及相关接线图、电气控制图的绘制，PLC梯形图程序的编写、力控监控软件的设计及组态通信配置等内容。

    通过西门子PLC、监控计算机（力控组态软件）、流量变送器及各阀门等，构建了一套可实时在线监测与控制的甲醇膜分离制CO装置控制系统，为甲醇膜分离制CO生产过程的自动化发展提供了重要的理论依据和参考价值。

毕业论文关键字：  甲醇；膜分离制CO；力控；PLC；

Design of control system for CO device of methanol membrane separation system

Abstract：Methanol is an important basic organic chemical raw materials, as the solid coal or natural gas into clean liquid fuel, easy storage and transportation, is an important carrier of energy. In recent years, the main products of the coal chemical and natural gas chemical industry development, methanol chemistry and methanol chemical development become an important field of chemical and energy industries.

The according to the requirements of the current methanol production process and membrane separation of CO process and graduation design, the integrated use of monitoring sensor technology, PLC control technology and configuration software technology, designed a set of methanol membrane separation of CO unit control system. Including the overall scheme design, sensors and other key peripheral equipment selection,  

PLC, IO port allocation and related wiring diagram, electrical control diagram drawing, PLC ladder diagram program preparation, force control monitoring software design and configuration of communication configuration.

By Siemens PLC, the monitoring computer (force control configuration software), flow transmitter and the valve to construct a can real-time on-line monitoring and control of methanol membrane separation of CO device control system, methanol membrane separation of CO production process automation development provides an important theoretical basis and reference value.

KeyWords：  Methanol; membrane separation CO; force control; PLC；

 目录

1.  绪 论 1

1.1　甲醇的重要性及其生产工艺 1

1.1.1 甲醇的重要性 1

1.1.2 生产工艺 2

1.1.3 甲醇膜分离制CO的工艺流程 3

1.2　膜分离技术 3

1.2.1 膜分离的过程 3

1.2.2 膜的种类 4

1.3　主要研究内容及实施方案 5

1.3.1 主要研究内容 5

1.3.2 实施方案 6

２.　监控系统总体方案设计 7

2.1　总体设计方案与设计流程 7

2.1.1 总体设计方案 7

2.1.2 PLC监控系统设计流程 8

2.1.3 PLC工作原理 PLC甲醇膜分离制CO装置控制系统设计:http://www.youerw.com/huaxue/lunwen_49571.html