天然氣處理廠循環(huán)水系統(tǒng)阻垢緩蝕機(jī)理及優(yōu)化設(shè)計(jì)
[Abstract]:Less than a year after a LNG plant was put into operation, the heat exchanger was corroded and perforated seriously. Through analysis, it is found that the heat exchanger of circulating cooling water system has serious fouling and resulting in the corrosion under the scale, which eventually leads to the perforation of the heat exchanger and the scrapping of the heat exchanger. The purpose of this paper is to study the action mechanism of scale and corrosion inhibitor and to optimize and screen the scale inhibitor in order to control the scaling and corrosion of heat exchanger. In this paper, the Rezner stability index method is used to determine the water quality of recharge water. The R.S.I value is 6.74, so it is judged that the recharge water in the factory belongs to corrosive water quality. The scale inhibition mechanism of QD-681A was studied by means of calcium carbonate deposition. It was found that the scale inhibitor of polyacrylic acid was in accordance with lattice distortion theory and the hypothesis of regeneration-self-debridement film. The scale inhibition of QD-681A,QD-632A,QD-631-5A,QD-655 was evaluated by calcium carbonate deposition method. The experimental results show that the scale inhibition rate of QD-655 is the highest, and that of QD-681A is the lowest, and that of QD-632A and QD-631-5A is the highest at 4:1. The scale inhibition rate of QD-681A increased and the scale inhibition rate of QD-655 decreased slightly with the increase of mass concentration, and the scale inhibition rate decreased with the increase of temperature. When the concentration of Ca2 increased, the scale inhibition of QD-681A increased first and then decreased, and the scale inhibition rate of QD-655 decreased gradually; with the increase of HCO3- concentration, the scale inhibition performance of the reagent decreased; with the increase of pH value, the scale inhibition rate of the agent decreased.
【學(xué)位授予單位】:西安石油大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2015
【分類號】:TE685.3
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 張景來;馮英華;李丹;李金秋;董立鋒;;阻垢劑的研究進(jìn)展[J];安徽工程科技學(xué)院學(xué)報(bào)(自然科學(xué)版);2008年01期
2 黃娟;徐強(qiáng);任志峰;酈和生;;循環(huán)冷卻水緩蝕劑和阻垢劑的研究進(jìn)展[J];電鍍與精飾;2009年02期
3 陸柱;綠色化學(xué)及其技術(shù)在腐蝕防護(hù)中的應(yīng)用[J];腐蝕與防護(hù);1999年05期
4 楊雪蓮,常青;緩蝕劑的研究與進(jìn)展[J];甘肅科技;2004年01期
5 李裕芳;;阻垢劑分散劑控制沉積機(jī)理探討[J];工業(yè)水處理;1984年04期
6 朱志良,張冰如,蘇耀東,倪亞明;PBTCA及馬—丙共聚物對碳酸鈣垢阻垢機(jī)理的動力學(xué)研究[J];工業(yè)水處理;2000年02期
7 李曉梅;;綠色阻垢劑聚環(huán)氧琥珀酸的阻垢機(jī)理的研究[J];廣州化工;2011年07期
8 王勁松;胡勇有;;循環(huán)冷卻水中微生物的控制[J];廣州環(huán)境科學(xué);2002年03期
9 李宇龍;蒲黎明;;石化企業(yè)循環(huán)冷卻水系統(tǒng)節(jié)水技術(shù)淺析[J];廣東化工;2014年16期
10 趙彥生;孫鳳兒;劉永梅;黨在清;王華;;我國聚合物阻垢劑的研究新進(jìn)展[J];化學(xué)與生物工程;2007年02期
相關(guān)碩士學(xué)位論文 前8條
1 馮彪;閉式循環(huán)冷卻水系統(tǒng)的優(yōu)化工藝及機(jī)理研究[D];江西理工大學(xué);2011年
2 陳笑居;給水管道的微生物腐蝕[D];哈爾濱工業(yè)大學(xué);2011年
3 易華;新型緩蝕—阻垢劑的研究[D];哈爾濱工程大學(xué);2003年
4 唐俊;循環(huán)冷卻水系統(tǒng)緩蝕阻垢劑的開發(fā)應(yīng)用研究[D];華東師范大學(xué);2005年
5 何愛江;阻垢劑性能及機(jī)理研究[D];四川大學(xué);2006年
6 陸鑫;冷卻水系統(tǒng)中阻垢劑的復(fù)配使用及阻碳酸鈣垢的機(jī)理研究[D];華東師范大學(xué);2007年
7 江麗艷;冷凍水處理用緩蝕劑和殺菌劑的研究及應(yīng)用[D];天津大學(xué);2007年
8 李恒娟;高溫鹽酸緩蝕劑合成及應(yīng)用研究[D];西安石油大學(xué);2011年
,本文編號:2390951
本文鏈接:http://sikaile.net/kejilunwen/shiyounenyuanlunwen/2390951.html