本文選題：天然氣脫硫 + 適應(yīng)性��； 參考：《西南石油大學》2015年碩士論文

【摘要】：由于原料氣配氣方案制度改變、環(huán)境溫度變化等原因,在實際運行中,某天然氣脫硫裝置經(jīng)常受到原料氣流量、原料氣酸性組分含量和貧液入塔溫度等因素的干擾。為保證裝置平穩(wěn)運行,基于化工穩(wěn)態(tài)和動態(tài)模擬技術(shù)對裝置的適應(yīng)性和動態(tài)特性進行研究,以期為裝置的實際操作提供支撐。 基于HYSYS建立脫硫裝置穩(wěn)態(tài)模型,通過對比模擬數(shù)據(jù)與實際數(shù)據(jù)以驗證所建模型的正確性。依據(jù)參數(shù)控制的難易程度,將裝置參數(shù)分為可控制參數(shù)與不可控參數(shù)兩類。通過對可控參數(shù)進行單因素分析及靈敏度分析,探究各可控參數(shù)對天然氣凈化質(zhì)量、富液酸氣負荷和裝置能耗的影響情況并確定各參數(shù)對考察指標影響的強弱程度。通過對不可控變量進行響應(yīng)面回歸,得到原料氣流量、原料氣中H2S含量、原料氣中CO2含量和貧液溫度與所需貧液流量和能耗的定量關(guān)系。在此基礎(chǔ)上對不可控變量進行多因素交互作用分析,結(jié)果表明：原料氣流量和貧液入塔溫度間交互作用、原料氣中H2S含量和原料氣中CO2含量間交互作用對裝置能耗和循環(huán)量的影響可忽略,而其它因素間則存在顯著交互作用。 在穩(wěn)態(tài)模型分析的基礎(chǔ)上,增加裝置的設(shè)備和控制方案來建立裝置動態(tài)模型。以原料氣流量、原料氣中H2S含量、貧液溫度和貧液循環(huán)量為擾動量,對裝置進行正、反向等幅度擾動以研究裝置的動態(tài)特性。由于貧液循環(huán)量不會隨干擾而自動調(diào)整,面對干擾時富液酸氣負荷會出現(xiàn)較大幅度變化,而再生塔塔底能耗則基本不隨干擾變化。為提高裝置應(yīng)對干擾的自適應(yīng)性,結(jié)合穩(wěn)態(tài)分析結(jié)果提出比例和回歸兩種改進的控制方案。研究結(jié)果表明：比例控制方案中貧液循環(huán)量可隨原料氣流量變化而進行自動調(diào)整；回歸控制中貧液循環(huán)量可隨多個干擾變量而調(diào)整,進而實現(xiàn)對裝置的卡邊、自適應(yīng)控制。
[Abstract]:Because of the change of the scheme of raw gas distribution and the change of ambient temperature, the desulfurization device is often disturbed by the flow rate of raw gas, the content of acid component of raw gas and the temperature of lean liquid entering tower. In order to ensure the smooth operation of the plant, the adaptability and dynamic characteristics of the plant are studied based on the steady state and dynamic simulation technology of chemical industry, in order to provide support for the practical operation of the plant. The steady-state model of desulphurization device is established based on HYSYS, and the correctness of the model is verified by comparing the simulated data with the actual data. According to the degree of difficulty in parameter control, the device parameters are divided into controllable parameters and uncontrollable parameters. Through single factor analysis and sensitivity analysis of controllable parameters, the influence of controllable parameters on natural gas purification quality, liquid rich acid gas load and unit energy consumption is explored, and the degree of influence of each parameter on the investigation index is determined. Through the response surface regression of uncontrollable variables, the quantitative relationships between the flow rate of raw gas, the content of H _ 2S in raw gas, the content of CO2 in raw gas and the temperature of lean liquid were obtained. On the basis of this, the interaction analysis of the uncontrollable variables is carried out. The results show that the interaction between the flow rate of raw gas and the temperature of lean liquid entering tower, The interaction between H _ 2S content in feedstock gas and CO2 content in feedstock gas can be neglected, but there is significant interaction among other factors. On the basis of steady-state model analysis, the device dynamic model is established by adding equipment and control scheme. Taking the flow rate of raw gas, the content of H _ 2S in raw gas, the temperature of lean liquid and the amount of circulation of lean liquid as disturbance quantity, the dynamic characteristics of the device were studied by the constant amplitude disturbance of positive and reverse amplitude. Because the lean liquid circulation will not be adjusted automatically with the interference, the liquid rich acid gas load will change greatly in the face of the interference, while the energy consumption at the bottom of the regeneration tower will not change with the interference basically. In order to improve the adaptability of the device to interference, two improved control schemes, proportion and regression, were proposed in combination with the results of steady-state analysis. The results show that the lean liquid circulation can be adjusted automatically with the flow rate of raw gas in the proportional control scheme, and the poor liquid circulation can be adjusted with multiple disturbance variables in the regression control, thus realizing the self-adaptive control of the clamped edge of the device.
【學位授予單位】：西南石油大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TE96

【參考文獻】

相關(guān)期刊論文 前10條

1 陸恩錫,張慧娟,尹清華;化工過程模擬及相關(guān)高新技術(shù) (Ⅰ)化工過程穩(wěn)態(tài)模擬[J];化工進展;1999年04期

2 陸恩錫,張慧娟;化工過程模擬及相關(guān)高新技術(shù)(Ⅱ)化工過程動態(tài)模擬[J];化工進展;2000年01期

3 王國建;王宜龍;;鋼結(jié)構(gòu)防火涂料配方的響應(yīng)面法優(yōu)化[J];化工學報;2012年03期

4 曹長青,梁足培,姜亦文,呂清茂,劉玉法;MDEA脫硫過程的模擬與優(yōu)化[J];化學反應(yīng)工程與工藝;1999年03期

5 雷英;楊子海;朱洪林;雷利;王靈軍;;板式換熱器在天然氣凈化裝置中的應(yīng)用[J];化學工業(yè)與工程技術(shù);2010年04期

6 李奇;姬忠禮;馬利敏;;天然氣脫酸氣裝置動態(tài)建模及分析[J];計算機與應(yīng)用化學;2012年01期

7 李小飛;王淑娟;陳昌和;;胺法脫碳系統(tǒng)再生能耗[J];化工學報;2013年09期

8 楊小平;磨溪氣田80×10~4m~3/d天然氣凈化裝置處理能力擴大的可行性方案探討[J];石油與天然氣化工;1996年03期

9 楊小平,江開蘭;擴大磨溪氣田產(chǎn)能建設(shè)可行性方案研究[J];石油與天然氣化工;1997年03期

10 陳賡良;醇胺法脫硫脫碳工藝的回顧與展望[J];石油與天然氣化工;2003年03期

相關(guān)博士學位論文 前1條

1 郝新東;中美能源消費結(jié)構(gòu)問題研究[D];武漢大學;2013年

，

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