【摘要】：本課題主要以鐵水預(yù)處理為研究背景，首先概述鐵水預(yù)處理的發(fā)展概況；然后闡述研究內(nèi)容，最后以西門子PLC的自動化調(diào)試框架，實(shí)現(xiàn)KR脫硫法各設(shè)備間的分散控制和集中管理。 鐵水預(yù)處理作為轉(zhuǎn)爐冶煉鋼前的一道重要工序，目的是降低鐵水中硫的含量，用高品質(zhì)低硫鐵水煉鋼。對脫硫工藝的分析使得對降低脫硫成本和不同條件下鋼廠采用那種適宜工藝提出建議。KR攪拌脫硫法是外部裹有耐火材料的攪拌器，放置在鐵水罐內(nèi)，進(jìn)行旋轉(zhuǎn)攪拌，同時加入一定量的脫硫劑，反復(fù)進(jìn)行混合、反應(yīng)，直到脫硫成功。意義在于：降低冶煉成本，縮短冶煉周期，延長爐齡，改善提高各鋼種的質(zhì)量。 系統(tǒng)設(shè)計(jì)范圍從鐵水罐吊到脫硫?qū)Ｓ描F水罐車上開始，到鐵水脫硫處理結(jié)束后鐵水罐從脫硫?qū)Ｓ描F水罐車吊離為止，整個鐵水脫硫站內(nèi)的全部工藝設(shè)備及其附屬的潤滑、液壓等設(shè)備的電氣控制、信號、聯(lián)鎖、儀器儀表及計(jì)算機(jī)跟蹤等控制系統(tǒng)設(shè)計(jì)。其主要步驟為首先介紹主要工藝參數(shù)的數(shù)據(jù)采集，接著分別對主回路及各設(shè)備運(yùn)行進(jìn)行控制，然后針對工藝流程對相關(guān)設(shè)備狀況的數(shù)據(jù)進(jìn)行分析，，最后完成鐵水預(yù)處理系統(tǒng)的調(diào)試任務(wù)。 本系統(tǒng)是基于西門子PLCstep7編程環(huán)境和wincc組態(tài)畫面的控制系統(tǒng)，可以分為上位機(jī)部分和下位機(jī)部分，以PLC作為下位機(jī)，wincc組態(tài)軟件作為上位機(jī)，該系統(tǒng)是分布式的SCADA（監(jiān)控與數(shù)據(jù)采集）系統(tǒng)，具有分散控制與集中管理的特點(diǎn)，能夠很好的實(shí)現(xiàn)鐵水預(yù)處理功能。此系統(tǒng)操作方式分為自動、半自動、手動和機(jī)旁操作四種方式。電儀一體化，電控及儀控采用西門子PLC進(jìn)行控制，系統(tǒng)構(gòu)成完善，可靠性高，使用方便，維護(hù)簡單。脫硫的二級計(jì)算機(jī)系統(tǒng)采用Oracle中文版數(shù)據(jù)庫服務(wù)器和客戶端工具，開發(fā)語言采用Microsoft Visual C#。該系統(tǒng)完全實(shí)現(xiàn)KR二級工位物流信息跟蹤以及對應(yīng)三級系統(tǒng)中的計(jì)劃下發(fā)，生產(chǎn)數(shù)據(jù)跟蹤，生產(chǎn)情況實(shí)時監(jiān)視等功能，提高了生產(chǎn)管理水平，操作方便靈活。 本課題依據(jù)鐵水脫硫的工藝特點(diǎn)，對控制系統(tǒng)的設(shè)計(jì)以先進(jìn)、實(shí)用、經(jīng)濟(jì)、可靠為原則，當(dāng)前包括計(jì)算機(jī)、傳動、儀表等設(shè)備的發(fā)展都為實(shí)現(xiàn)上述原則提供了可靠的保證。
[Abstract]:In this paper, the research background of hot metal pretreatment is mainly taken as the research background. Firstly, the development of hot metal pretreatment is summarized. Then the research content is described. finally, the distributed control and centralized management among the equipment of KR desulphurization method are realized by using the automatic debugging framework of Siemens PLC. Hot metal pretreatment, as an important process before converter smelting steel, aims at reducing the sulfur content in hot metal and making steelmaking with high quality and low sulfur hot metal. The analysis of desulphurization process makes it possible to reduce desulphurization cost and adopt that kind of suitable process in steel plant under different conditions. KR stirring desulphurization method is an external agitator wrapped in refractory material, which is placed in a hot metal tank and stirred by rotation. At the same time, adding a certain amount of desulphurizer, repeatedly mixing, reaction, until desulphurization is successful. The significance is to reduce smelting cost, shorten smelting cycle, prolong furnace life and improve the quality of each steel. The design scope of the system starts from the hot metal tank crane to the special hot metal tank car for desulphurization, until the hot metal tank is lifted from the desulphurization special hot metal tank car after the hot metal desulphurization treatment is finished, and all the technological equipment and the auxiliary lubrication in the whole hot metal desulphurization station are carried out. Hydraulic equipment electrical control, signal, interlocking, instrument and computer tracking control system design. The main steps are as follows: first, the data acquisition of the main process parameters is introduced, then the main circuit and the operation of each equipment are controlled respectively, and then the data of the related equipment conditions are analyzed according to the technological process. Finally, the debugging task of hot metal pretreatment system is completed. This system is based on Siemens PLCstep7 programming environment and wincc configuration screen control system. It can be divided into upper computer part and lower computer part. PLC is used as lower computer and wincc configuration software is used as upper computer. The system is a distributed SCADA (Monitoring and data acquisition) system, which has the characteristics of decentralized control and centralized management, and can realize the function of hot metal pretreatment. The operation mode of this system can be divided into four ways: automatic, semi-automatic, manual and machine-side operation. The electric instrument is integrated, the electronic control and the instrument control are controlled by Siemens PLC, the system structure is perfect, the reliability is high, the use is convenient, and the maintenance is simple. The secondary computer system of desulphurization adopts Oracle Chinese version database server and client tool, and the development language adopts Microsoft Visual C / C. The system fully realizes the functions of KR secondary station logistics information tracking and corresponding three-level system, such as planning, production data tracking, real-time monitoring of production situation, etc., which improves the level of production management and is convenient and flexible in operation. According to the technological characteristics of hot metal desulphurization, the design of the control system is based on the advanced, practical, economical and reliable principles. At present, the development of computer, transmission, instrument and other equipment provides a reliable guarantee for the realization of the above-mentioned principles.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TF345

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