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A. M. Magerramov M. R. Bairamov Sh. B. Khoseinzade M. A. Agaeva G. M. Mekhtieva S. G. Alieva 《Petroleum Chemistry》2013,53(6):423-425
Pyridinium salts have been synthesized by reacting 2-allyl- and 4-propenylphenoxy(C2–C4)bromoalkanes with pyridine and further examined as inhibitors of hydrogen sulfide corrosion of St3 steel in water-salt systems containing H2S. The dependence of the protective properties of the test compounds on their structure has been revealed. It has been found that N-(2-propenylphenoxytetamethylene)pyridinium bromide exhibits the best inhibitory properties (degree of corrosion protection at a concentration of 100 mg L?1 is 96.0%). 相似文献
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D. B. Kudryavtsev A. R. Panteleeva A. V. Yurina S. S. Lukashenko Yu. P. Khodyrev R. M. Galiakberov D. N. Khaziakhmetov L. A. Kudryavtseva 《Petroleum Chemistry》2009,49(3):193-198
The aggregation properties of hydrophobized polyethyleneimines and their inhibitory activity in hydrogen sulfide and carbon dioxide corrosion of iron were studied. The critical association concentrations, the radii of polymer aggregates formed in aqueous and aqueous alcohol solutions of polyethyleneimines, were determined. It was shown that these polymers at a concentration of 10–25 mg/l display a high inhibiting activity in the reaction of hydrogen sulfide corrosion of iron. 相似文献
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热喷涂技术在液化气球罐氢鼓包防治中的应用 总被引:1,自引:0,他引:1
2002年10月河南油田石蜡精细化工厂的一台200m3液化气球罐在压力容器定检中,在一块瓜片上发现10处鼓包。经南阳市锅炉压力容器检验所检验,该容器安全等级定为4级,允许监控使用一年。该厂共有液化气球罐15台,从50~2000m3,而出现氢鼓包,尚属首次。相关资料表明,液化气储罐一旦出现氢鼓包,其发展为开裂的速度是惊人的,往往在一年之内。因此,探索氢鼓包的防治,对避免液化气泄漏、着火甚至爆炸是十分重要的。1球罐概况1.1技术参数设计压力1.6MPa容积200m3设计温度50℃壁厚30mm材质16MnR介质液化石油气支柱数量6公称直径7100mm操作… 相似文献
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Z. R. Agaeva K. I. Sadykhov F. M. Velieva I. G. Melikova 《Chemistry and Technology of Fuels and Oils》2010,46(5):363-366
The inhibiting power of calcium alkylphenol sulfonate obtained by varying the ratios of the initial components was investigated with the optimization method. Using a method from mathematical statistics, the optimum values of the ratio of the basic reagents and conditions of synthesis of effective hydrogen-sulfide metal corrosion inhibitors were found. 相似文献
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E. S. Batyeva O. V. Ugryumov O. A. Varnavskaya Yu. P. Khodyrev E. V. Platova E. K. Badeeva S. I. Vasyukov O. G. Sinyashin 《Petroleum Chemistry》2013,53(2):139-143
New ammonium salts of dithiophosphoric O,O′-diesters have been obtained by simple and convenient (one pot) methods of synthesis from white phosphorus (P4), elemental sulfur, alcohols, phenols (including hydroxyethylated nonylphenols), and amines. It has been revealed that the ammonium salts of O,O-dialkyl dithiophosphoric acids obtained are effective inhibitors of carbon dioxide corrosion (protective effect Z = 90–99%) and hydrogen sulfide corrosion (Z = 88–89%) of a mild steel. It has been shown that the inhibitory activity against carbon dioxide corrosion depends on neither theamine nature nor the chain length of the alkyl substituent in the ester group and the protective effect in the case of hydrogen sulfide corrosion depends on the nature of the reactant alcohol or amine and may slightly decrease (by 10–15%). An advantage of these inhibitors is that their protective effect in carbon dioxide corrosion is enhanced with temperature (30–80°C), rather than decreases. 相似文献
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以油酸与三乙烯四胺或四乙烯五胺为原料、甲苯为携水剂,控制不同的酸胺摩尔比,合成出一系列单环或双环油酸基咪唑啉类缓蚀剂,通过元素分析法和红外光谱法对产品进行了结构表征,并利用静态失重法考察了咪唑啉环数对缓蚀剂缓蚀性能的影响.结果表明,当酸胺摩尔比为1.0:1.1时,反应产物为单环咪唑啉衍生物;当酸胺摩尔比为2.0:1.1时,形成双环咪唑啉衍生物;用油酸与四乙烯五胺摩尔比为1.0:1.1合成的单环油酸基咪唑啉作缓蚀剂,当其添加量为6 mg/L时,缓蚀率可达99%以上. 相似文献
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A. V. Mashkina 《Petroleum Chemistry》2006,46(1):28-33
The catalytic reaction of methanol with hydrogen sulfide at a total pressure of 0.1–1.8 MPa was investigated. The main product at different values of total pressure in the system was methylmercaptan, and the by-products were dimethyl sulfide, dimethyl ether, carbon oxides. An increase in the contact time increased the yields of methylmercaptan and dimethyl sulfide, whereas the yields of dimethyl ether and gases changed slightly. The selectivity for methylmercaptan was approximately constant up to a ~95% conversion of methanol. The elevation in temperature increased the reaction rate but barely affected the product formation selectivity. The rate of methanol conversion increases linearly with the hydrogen sulfide concentration and depends on the methanol concentration raised to a power of 0.4–0.5; water retards the process. The selectivity for methylmercaptan decreases, and that for dimethyl sulfide and dimethyl ether increases at an H2S to methanol molar ratio below 1.4: 1, regardless of the value of total pressure. The reaction rate increases with the total pressure raised to a power 0.4–0.5; however, the selectivities for methylmercaptan and by-products remain unchanged. 相似文献
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R. R. Vezirov F. A. Arslanov G. G. Telyashev S. A. Obukhova N. R. Vezirova D. E. Khalikov 《Chemistry and Technology of Fuels and Oils》2009,45(6):399-401
Technical and production solutions ensuring a commercial boiler fuel with a hydrogen sulfide content of no more than 2 ppm
are developed as a result of the basic design of a unit for stripping hydrogen sulfide from visbreaking resid. The potential
exists for a further increase in the output of the visbreaking plant to 2 million tons/year, where the actual output achieved
is 1.4 million tons/year. 相似文献
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V. D. Makarenko S. P. Shatilo Kh. Kh. Gumerskii V. A. Belyaev 《Chemical and Petroleum Engineering》2000,36(2):125-130
Conclusions
Nizhnevartovsk Branch of the Tyumen Oil and Gas University. Translated from Khimicheskoe i Neftegazovoe Mashinostroenie, No.
2, pp. 40–43, February, 2000. 相似文献
1. | It is proved that CO2 corrosion of carbon steel increases by 1.5–2 times with increase of H2S content in the mixture (p H2S<0.5 MPa) in the temperature range 20–80°C. Further increase in H2S content (p H2S≥0.5–1.5 MPa) weakens corrosion, especially in the temperature range 100–250°C, because of influence of FeS and FeCO3 on corrosion. |
2. | It is shown that with increase of O2 concentration in the mixture (p O 2=0–1.5 MPa) the CO2 corrosion rate increases 3–4 times in the temperature range 40–80°C. As the temperature rises to 100–250°C, oxygen hardly exerts any effect on the corrosion rate. |
3. | A scheme is proposed to classify processes of CO2 corrosion of carbon steel into three types based on the type of corrosion products formed, which enables one to evaluate the effect of combined influence of H2S, O2, and temperature on the nature of CO2 corrosion. |
4. | The thermodynamic potential of formation of CO2 corrosion products (FeS and FeCO3) upon interaction between the mixture containing CO2 and H2S and the carbon steel sample surface has been calculated; the equilibrium conditions for the formation of metastable FeS and its dissolution in the main corrosion product, viz., FeCO3, have been determined. |
5. | It has been shown that the combined effect of H2S and O2 on the CO2 corrosion process, consists in acceleration of cathodic reaction of hydrogen ion reduction. |
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采用热力学分析方法探究了天然气中存在的CH_4、CO_2成分对H_2S制氢反应的影响。考虑了含有H_2S的4种反应体系以及可能生成的6种主要产物,应用Aspen模拟软件,计算了体系压力为0.1 MPa、温度在400~1 000℃的等温等压吉布斯平衡反应器内的H_2S转化率及H2收率,讨论了CH_4、CO_2的存在及其浓度的影响。结果表明,CH_4或CO_2的加入,均可大幅提高H_2S的转化率,且对提高温度和增加浓度都是有利的。CH_4的存在还可显著增加H_2收率,但CO_2的作用则相反。当二者同时存在时,体系主要发生CH_4-CO_2重整反应,生成大量H_2,并抑制H_2S的转化。 相似文献
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