【摘要】：罐區(qū)是石化企業(yè)中非常重要的儲運設(shè)施,也是國家能源戰(zhàn)略建設(shè)的重點對象。隨著石化行業(yè)的不斷發(fā)展,對罐區(qū)流程及自動化先進性和安全性的要求也日益提高。目前很多中小型企業(yè)和老國企部分裝置暴露出的很多問題已引起國家和業(yè)主的高度重視。本文依托一項目前運行良好的改造裝置,基于工程設(shè)計項目中自控專業(yè)的設(shè)計經(jīng)驗和體會,進行了探討和總結(jié)。針對原罐區(qū)生產(chǎn)工藝復雜、添加劑配比要求嚴格、品種多樣、互換性差的特點,重點研究了控制系統(tǒng)改造和儀表選型。本文以遼寧同益石化有限公司3萬噸/年MTBE裝置和10萬噸/年特種蠟裝置及配套設(shè)施改造項目為對象,結(jié)合罐區(qū)工藝流程特點和自動化水平不高的實際,提出了罐區(qū)自動控制系統(tǒng)的設(shè)計方案,控制系統(tǒng)改造選擇PCS7作為平臺,從儀表選型、軟硬件配置、設(shè)計總體布局及系統(tǒng)的最終實現(xiàn)幾個方面探討和研究了設(shè)計過程中的方法和思路。在此基礎(chǔ)上,選用先進的自動化控制儀表取代原有的老式儀表,對各類檢測儀表進行剖析,并首次成功應用無線儀表系統(tǒng)解決實際施工過程中遇到的難題。著重介紹了伺服液位計在改造過程中的應用。目前原罐區(qū)通過改造已經(jīng)實現(xiàn)了較先進的自動化水平,通過本次的成功應用經(jīng)驗,希望在以后的工作學習中為類似裝置的應用打下更優(yōu)良的基礎(chǔ)。
[Abstract]:Tank area is a very important storage and transportation facility in petrochemical enterprises, and it is also the key object of national energy strategy construction. With the development of petrochemical industry, the requirement of advanced process, automation and safety of tank area is also improved day by day. At present, many problems exposed by many small and medium enterprises and some old state-owned enterprises have attracted great attention of the state and the owners. Based on the design experience and experience of automatic control major in engineering design project, this paper discusses and summarizes the improvement device which runs well before a project. In view of the complex production process, strict requirements of additive ratio, variety and poor interchangeability in the original tank area, the control system modification and instrument selection are emphatically studied. This paper takes the MTBE plant of Liaoning Tongyi Petrochemical Co., Ltd., 30, 000 t / a, the special wax plant of 100000 t / year and the retrofit project of supporting facilities as the object, combining the characteristics of the process flow and the fact that the automation level is not high in the tank area. The design scheme of automatic control system in tank area is put forward. PCS7 is selected as the platform for the improvement of the control system, and the instrument selection, hardware and software configuration are introduced. The design method and train of thought in the design process are discussed and studied in several aspects of the overall layout of the design and the final implementation of the system. On this basis, the advanced automatic control instruments are used to replace the old ones, and all kinds of measuring instruments are analyzed, and the wireless instrument system is successfully used to solve the problems encountered in the actual construction process for the first time. The application of servo level meter in the process of transformation is emphatically introduced. At present, the original tank area has already realized the advanced automation level through the transformation, through this successful application experience, hopes to lay a better foundation for the similar device application in the future work study.
【學位授予單位】：北京化工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TE978

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本文編號：2283149