【摘要】：煤泥水處理是選煤廠非常重要的工藝環(huán)節(jié)，其處理效果會(huì)直接影響洗水復(fù)用與閉路循環(huán)的指標(biāo)，而且對(duì)選煤廠其他環(huán)節(jié)如分選效率、產(chǎn)品的數(shù)質(zhì)量指標(biāo)等都影響很大，，甚至是制約全廠經(jīng)濟(jì)效益和社會(huì)效益的個(gè)重要系統(tǒng)。 本文以鳳凰山礦選煤廠煤泥水處理控制系統(tǒng)為研究對(duì)象，針對(duì)其控制方式落后、資源浪費(fèi)等問(wèn)題，設(shè)計(jì)了基于PLC與組態(tài)軟件的煤泥水處理控制系統(tǒng)。該系統(tǒng)采用兩套S7-1200PLC和兩套S7-200PLC做濃縮機(jī)加藥控制和底流控制的底層控制器，基于力控Force Control V7.0設(shè)計(jì)上位機(jī)監(jiān)控軟件，并通過(guò)以太網(wǎng)組網(wǎng)，實(shí)現(xiàn)了各控制器間的互通。 本文根據(jù)選煤廠原煤分選以及煤泥水處理系統(tǒng)的工藝流程和現(xiàn)場(chǎng)生產(chǎn)情況，進(jìn)行煤泥水絮凝沉降試驗(yàn)，將煤泥水入料流量、入料濃度和干煤泥入洗量對(duì)絮凝沉降的影響綜合起來(lái)，研究分析出合理的藥劑制度，為藥劑的自動(dòng)添加提供了依據(jù)。 在此基礎(chǔ)上，進(jìn)行了系統(tǒng)各部分的軟硬件設(shè)計(jì)，主要包括控制主站的設(shè)計(jì)、底流控制系統(tǒng)的設(shè)計(jì)，藥劑制備和添加系統(tǒng)的設(shè)計(jì)以及硬件設(shè)備與主從站控制器的通信、主從站與上位機(jī)之間的通信。 控制系統(tǒng)采用前饋結(jié)合反饋的多策略控制算法實(shí)現(xiàn)自動(dòng)加藥的控制，依據(jù)藥劑制度，分析研究前饋環(huán)節(jié)中入料流量和入料濃度對(duì)加藥量的影響，設(shè)計(jì)前饋環(huán)節(jié)的控制策略和算法；在反饋環(huán)節(jié)中引入模糊控制，并通過(guò)將煤泥水入料流量和入料濃度對(duì)加藥量的影響考慮到模糊控制規(guī)則中，分析研究反饋環(huán)節(jié)的控制策略和算法。 最后該控制系統(tǒng)在現(xiàn)場(chǎng)進(jìn)行安裝調(diào)試，工業(yè)試驗(yàn)運(yùn)行情況表明，系統(tǒng)各部分?jǐn)?shù)據(jù)傳輸穩(wěn)定可靠；前饋結(jié)合反饋的多策略控制算法能夠有效的將溢流水濁度控制在合理的范圍內(nèi)，保證了煤泥水處理系統(tǒng)的穩(wěn)定運(yùn)行，減少了人工投入，降低了運(yùn)行成本，節(jié)省了藥劑的消耗，提高了企業(yè)的經(jīng)濟(jì)和社會(huì)效益。
[Abstract]:Sludge water treatment is a very important process in coal preparation plant, and its treatment effect will directly affect the indicators of washing water reuse and closed circuit circulation, and has a great impact on other links of coal preparation plant, such as separation efficiency, product number and quality indicators, and so on. Even an important system that restricts the economic and social benefits of the whole plant. This paper takes the coal slurry water treatment control system of Fenghuangshan Coal preparation Plant as the research object and designs the coal slurry water treatment control system based on PLC and configuration software to solve the problems of backward control mode and waste of resources. The system adopts two sets of S7-1200PLC and two sets of S7-200PLC as the bottom controller of dosing control and underflow control of concentrator. Based on the force-controlled Force Control V7.0, the upper computer monitoring software is designed, and the interworking of the controllers is realized through Ethernet network. According to the process flow and field production of raw coal separation and sludge water treatment system in coal preparation plant, the flocculation and settlement test of coal slime water was carried out, and the feed flow of coal slurry water was carried out. The effects of feed concentration and the amount of dry coal sludge on flocculation settlement are combined to study and analyze the reasonable medicament system, which provides a basis for the automatic addition of medicament. On this basis, the hardware and software design of each part of the system is carried out, including the design of the control master station, the design of the underflow control system, the design of the pharmaceutical preparation and addition system, and the communication between the hardware equipment and the master-slave station controller. Communication between master and slave station and upper computer. In the control system, the multi-strategy control algorithm of feedforward and feedback is adopted to realize the automatic dosing control. According to the medicament system, the influence of the feed flow rate and the feed concentration in the feedforward link on the dosing amount is analyzed and studied. Design the control strategy and algorithm of feedforward link; The fuzzy control is introduced into the feedback link, and the control strategy and algorithm of the feedback link are analyzed and studied by taking into account the effect of feed-in flow rate and feed-in concentration on the dosing amount of coal slime water into the fuzzy control rule. Finally, the control system is installed and debugged on the spot. The operation of the industrial test shows that the data transmission of each part of the system is stable and reliable. The multi-strategy control algorithm based on feedforward and feedback can effectively control the overflow turbidity within a reasonable range, ensure the stable operation of the coal slurry water treatment system, reduce the manual input, reduce the operation cost, and save the consumption of chemicals. Improve the economic and social benefits of the enterprise.
【學(xué)位授予單位】：太原理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TD94

【參考文獻(xiàn)】

相關(guān)期刊論文 前8條

1 鄒偉;楊平;徐德;;基于MCGS組態(tài)軟件的上位機(jī)控制系統(tǒng)設(shè)計(jì)[J];制造業(yè)自動(dòng)化;2008年12期

2 鄧明偉;;水質(zhì)硬度對(duì)煤泥浮選影響的分析[J];煤炭技術(shù);2008年10期

3 湛含輝;羅彥偉;;高濃度細(xì)粒煤泥水的絮凝沉降研究[J];煤炭科學(xué)技術(shù);2007年02期

4 左輝;;濁度的檢測(cè)原理及方法[J];中國(guó)計(jì)量;2012年04期

5 孫秀麗;王培培;;前饋-反饋控制系統(tǒng)的具體分析及其MATLAB/Simulink仿真[J];中國(guó)集成電路;2013年09期

6 陳俊濤;張乾龍;楊露;;煤泥水濃度檢測(cè)的現(xiàn)狀與發(fā)展趨勢(shì)[J];煤炭技術(shù);2014年11期

7 朱曉東,王軍,萬(wàn)紅;基于Smith預(yù)估的純滯后系統(tǒng)的控制[J];鄭州大學(xué)學(xué)報(bào)(工學(xué)版);2004年01期

8 李傳偉;方文;徐寧;趙建軍;;絮凝劑溶液制備與投加系統(tǒng)研制[J];有色金屬(選礦部分);2013年05期

相關(guān)博士學(xué)位論文 前2條

1 高貴軍;絮凝劑溶解液制備及自動(dòng)添加機(jī)理研究[D];太原理工大學(xué);2010年

2 楊津靈;灰色模糊PID算法在煤泥水絮凝沉降過(guò)程控制中的應(yīng)用研究[D];太原理工大學(xué);2012年

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