本文選題：水泥熟料燒成系統(tǒng) + 熱效�。� 參考：《濟(jì)南大學(xué)》2015年碩士論文

【摘要】：水泥熟料燒成系統(tǒng)熱耗占據(jù)了整個水泥生產(chǎn)熱耗的絕大部分,是一個巨大的耗能系統(tǒng)。而水泥生產(chǎn)設(shè)備眾多,工藝和熱力學(xué)基理復(fù)雜,是一個高度非線性、高階次的熱工過程,很難用一個簡單的模型來描述其能效關(guān)系及能量傳遞規(guī)律。目前,水泥生產(chǎn)過程的熱量和熱效的研究僅限于整個燒成系統(tǒng)且是離線計(jì)算,無法實(shí)時(shí)在線監(jiān)測,存在較大的滯后性,更沒有可在線指導(dǎo)熟料燒成過程實(shí)時(shí)控制的熱效KPI(Key Performance Index)。本文以山東某水泥廠5000t/d(噸每天)熟料線為背景,深入研究了水泥熟料燒成系統(tǒng)工藝原理、熱工過程以及熱力學(xué)原理,確定了系統(tǒng)及各環(huán)節(jié)(預(yù)熱器環(huán)節(jié)、分解爐環(huán)節(jié)、回轉(zhuǎn)窯環(huán)節(jié)、篦冷機(jī)環(huán)節(jié))的熱效和總熱效(熱力學(xué))作為對現(xiàn)場用能狀況監(jiān)測的KPI,并實(shí)現(xiàn)了在線智能監(jiān)測,可對熟料燒成過程操作提供有效支持。具體工作內(nèi)容如下:首先,確定了影響水泥熟料燒成系統(tǒng)及各環(huán)節(jié)熱效智能監(jiān)測的因素和相關(guān)參數(shù)的獲取方式,包括:可在線監(jiān)測參數(shù)(如窯頭罩溫度、分解爐內(nèi)壓力、高溫風(fēng)機(jī)轉(zhuǎn)速等)、化驗(yàn)室不定周期參數(shù)(如煤粉熱值、生料成分、煙氣成分等)、人工設(shè)定固定參數(shù)(如系統(tǒng)表面散熱量、窯頭輻射熱、氣體溫度等)以及部分關(guān)鍵參數(shù)的軟測量數(shù)據(jù)(如風(fēng)機(jī)實(shí)際風(fēng)量參數(shù)、熱容參數(shù)、出篦冷機(jī)熟料量等),其中,重點(diǎn)研究了基于最小二乘支持向量機(jī)(LS_SVM)原理的出篦冷機(jī)熟料量和基于機(jī)理分析的風(fēng)機(jī)實(shí)際風(fēng)量的軟測量等。其次,分別對燒成系統(tǒng)、預(yù)熱器環(huán)節(jié)、分解爐環(huán)節(jié)、回轉(zhuǎn)窯環(huán)節(jié)和篦冷機(jī)環(huán)節(jié)的收入熱量、支出熱量的在線監(jiān)測進(jìn)行了研究�；诂F(xiàn)場調(diào)研及熱工分析,確定燒成系統(tǒng)及各環(huán)節(jié)的熱效和總熱效(熱力學(xué))為水泥熟料燒成系統(tǒng)熱效KPI。并基于獲取的前述參數(shù),實(shí)現(xiàn)了燒成系統(tǒng)和其他四個環(huán)節(jié)的熱平衡狀態(tài)和熱效KPI的智能監(jiān)測,并給予了工程實(shí)例的分析。最后,開發(fā)了水泥熟料燒成系統(tǒng)熱效KPI智能監(jiān)測軟件,主要包括后臺計(jì)算和網(wǎng)頁發(fā)布的研發(fā),分別實(shí)現(xiàn)數(shù)據(jù)的獲取和參數(shù)的計(jì)算以及重要數(shù)據(jù)的網(wǎng)頁發(fā)布、瀏覽等功能,便于相關(guān)人員就地及遠(yuǎn)程了解現(xiàn)場用能狀況。實(shí)際應(yīng)用證明,該軟件運(yùn)行可靠,結(jié)果相對準(zhǔn)確,可為操作人員合理調(diào)控熟料燒成過程提供實(shí)時(shí)、有效支持。
[Abstract]:The heat consumption of cement clinker sintering system accounts for most of the heat consumption in cement production and is a huge energy consumption system. However, cement production is a highly nonlinear and high-order thermal process with a large number of equipment and complex technological and thermodynamic fundamentals. It is difficult to describe its energy efficiency relationship and energy transfer law by a simple model. At present, the research of heat and thermal efficiency in cement production process is limited to the whole sintering system and is off-line calculation, which can not be monitored in real time, and there is a great lag, and there is no heat efficiency KPI(Key Performance index which can guide the real time control of clinker sintering process on line. Based on the clinker line of 5000t / d (per ton per day) in a cement plant in Shandong Province, this paper has deeply studied the process principle, thermal process and thermodynamic principle of cement clinker sintering system, and determined the system and each link (preheater link, calciner link). The thermal efficiency and total thermal efficiency (thermodynamics) of rotary kiln and grate cooler are used as KPIs to monitor field energy use condition, and on-line intelligent monitoring is realized, which can provide effective support for clinker firing process operation. The specific work is as follows: firstly, the factors affecting the intelligent monitoring of thermal efficiency of cement clinker burning system and each link are determined, including on-line monitoring parameters (such as kiln hood temperature, calciner pressure, etc.) Rotating speed of high temperature fan, constant period parameters of laboratory (such as calorific value of pulverized coal, raw material composition, smoke composition, etc.), fixed parameters (such as system surface heat dissipation, kiln head radiant heat, etc.) Gas temperature and some key parameters of soft sensing data (such as fan actual air flow parameters, heat capacity parameters, grate cooler clinker quantity, etc.), The soft measurement of clinker quantity of grate cooler based on the least square support vector machine (LSSVM) principle and the actual air volume of fan based on mechanism analysis are mainly studied in this paper. Secondly, the on-line monitoring of income heat and expenditure heat of sintering system, preheater, calciner, rotary kiln and grate cooler are studied respectively. Based on field investigation and thermal analysis, the thermal efficiency and total thermal efficiency (thermodynamics) of the sintering system and each link are determined to be the heat efficiency KPIs of cement clinker sintering system. Based on the obtained parameters, the intelligent monitoring of the thermal equilibrium state and thermal efficiency KPI of the firing system and the other four links is realized, and the analysis of engineering examples is given. Finally, the KPI intelligent monitoring software for heat efficiency of cement clinker burning system is developed, which mainly includes the research and development of backstage calculation and web page release, the acquisition of data and the calculation of parameters, as well as the functions of publishing and browsing important data on the web page. To facilitate the relevant personnel to understand the site and remote energy use status. The practical application shows that the software is reliable and the results are relatively accurate. It can provide real time and effective support for the operators to regulate the clinker firing process reasonably.
【學(xué)位授予單位】：濟(jì)南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TQ172.62

【共引文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前2條

1 許文夢;基于MES的水泥企業(yè)能效分析研究[D];濟(jì)南大學(xué);2012年

2 姚傳波;水泥熟料燒成系統(tǒng)煤效分析研究[D];濟(jì)南大學(xué);2014年

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本文編號：1812650