【正文】 ing System Design of Distillation Abstract The automated technology has bee the national industry productive forces level an important symbol. The article introduced the industrial automation technology development based on the realtime work control automation technology’s design, started from the Distillation control scheme , introduced process equipment, production process, control process and DCS control system knowledge about the distillation column ， and the distillation control column system involved in instrumentation and DCS controls the basics. The position and functions and control strategy of control system are particular described, and has analyzed the automated technology take the batch distillation and distillation industry as the example in the domestic essential industry dominos application condition, has expounded the automated technology in the industrial development influential role. Using DCS control system in batch distillation system, it not only provide reliable data for the operator ,but also provide dynamic images of the main detecting point, and it also has a reliable multilevel alarm system to hint the failure point and maintenance measures. At the same time, the puter system can also adjust process control of batch distillation from macro angle so that the whole batch distillation system harmoniously runs as a whole to achieve production process automation. The advantages such as flexible control of DCS, multiple functions, the convenient key technical parameters setting and the openandshut interface of the III operating system etc. Will finally make it applied extensively in the rectification device. Practice shows that the system is reliable and stable in operation and is convenient to be operated. This system can be effectively controlled if related parameters are correctly adjusted, which is of great popularization value. Keywords: automation。 DCS。 batch distillation system。 puter control system ....................... III 第一章 緒 論 ...................................................................................................................... 1 精餾塔控制的研究背景及意義 ................................................................................ 1 精餾塔控制的研究現(xiàn)狀 ........................................................................................... 1 精餾塔控制存在的問題及最新發(fā) 展 .......................................................................... 2 第二章 精餾塔控制的原理和工藝要求 ................................................................................. 4 精餾塔分餾原理 ..................................................................................................... 4 精餾塔的控制要求及主要擾動 ................................................................................ 5 精餾塔的控制要求 ........................................................................................ 5 精餾塔的干擾因數(shù)特性 ................................................................................. 6 精餾塔的控制目標(biāo) .................................................................................................. 9 質(zhì)量指標(biāo) ...................................................................................................... 9 產(chǎn)品產(chǎn)量和能量消耗 ..................................................................................... 9 精餾塔裝置的工藝流程 ..........................................................................................11 第三章 精餾塔控制方案設(shè)計(jì) ............................................................................................. 13 精餾塔控制方案 ................................................................................................... 13 V 提餾段參數(shù)控制 .......................................................................................... 13 精餾段參數(shù)控制 .......................................................................................... 14 精餾塔的溫差控制及雙溫差控制 .................................................................. 16 乙烯精餾塔裝置的控制方案 .................................................................................. 19 精餾塔工藝因數(shù)影響及系統(tǒng)維護(hù) ........................................................................... 23 工藝因數(shù)影響 .............................................................................................. 23 故障分析及系統(tǒng)維護(hù) ................................................................................... 24 第四章 DCS 系統(tǒng)選型 ................................................................................................... 26 DCS系統(tǒng)概述 .................................................................................................... 26 DCS系統(tǒng)的結(jié)構(gòu)與特點(diǎn) ...................................................................................... 26 DCS系統(tǒng) 的基本組成 ................................................................................... 26 DCS系統(tǒng)的特點(diǎn) .......................................................................................... 28 DCS系統(tǒng)的傳輸媒介 ................................................................................... 29 DCS通訊網(wǎng)絡(luò) ............................................................................................. 29 JX300XP 系統(tǒng)簡介 ..................................................................................... 31 測控儀表選型 .............................................................................................. 39 第五章 控制系統(tǒng)在 DCS 中的實(shí)現(xiàn) ..................................................................................... 42 控制站及操作站組態(tài) ............................................................................................. 44 控制站組態(tài) ................................................................................................. 44 操作站組態(tài) ................................................................................................. 45 第六章 控制系統(tǒng)的設(shè)計(jì) .................................................................................................... 48 VI 塔釜液位控制系統(tǒng)的設(shè)計(jì) .............................