Air Separation Control System Design And Application

In recent years, the coal chemical projects have continued to warm up. As anindispensable unit in the production of coal chemical industry, a large number of airseparation units were put into use. Air separation unit is a set of device whichseparates the air. At this stage, air separation unit widely uses cryogenic methods forproduction, the output of the gas oxygen, nitrogen gas, liquid oxygen; liquid nitrogenand liquid argon are all chemical production. It is indispensable important for thecoal chemical production as raw materials and products.This subject adopts the superior computer distributed control system, using thecentral focus on monitoring control is given priority to, the machine and on-sitemonitoring control instrument plate with the principle of combining.The topics madean in-depth study of an air separation unit control system design and application ofYankuang Guohong chemical Co., LTD.1. The topic introduces an air separation plant control systems, systemarchitecture and hardware configuration of Yankuang Guohong chemical Co., LTD.on the basis of the discussion of air separation process and control system.2. To meet the needs of process, the entire control system of air separationinstrument adopt DCS distributed control system, the main process parametersdisplay, trend records, historical events records, alarm, control, print, tabulation andflow chart are dynamic display picture by collecting and distributing system toaccomplish3. This thesis describes each part of the control system design andimplementation of the ASU control system. For controlling system on importantequipment, an important element, the important function of a device.4. From the actual production and practice tests, this thesis analyses, tests andsummary the design system.