Phase Equilibriums of Ammonium Chloride Systems as Model Hydrogenolysis Products of Organochlorine Compounds under Naphtha Hydrotreating Conditions
| العنوان: | Phase Equilibriums of Ammonium Chloride Systems as Model Hydrogenolysis Products of Organochlorine Compounds under Naphtha Hydrotreating Conditions |
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| المؤلفون: | V. V. Korenev, V. P. Tomin, O. V. Zhdaneev, V. M. Kapustin |
| المصدر: | Petroleum Chemistry. 62:376-382 |
| بيانات النشر: | Pleiades Publishing Ltd, 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Fuel Technology, Geochemistry and Petrology, General Chemical Engineering, Energy Engineering and Power Technology, General Chemistry |
| الوصف: | Abstract The study focuses on corrosion challenges for naphtha hydrotreating equipment (installed upstream of a reforming unit) caused by ammonium chloride deposits and on the development of adequate chemical engineering protection measures. Using an experimental setup, we investigated the sublimation/desublimation of ammonium chloride at varying pressures and temperatures in a medium typical of naphtha and hydrogen-bearing gas streams flowing from a naphtha hydrotreater. Superstoichiometric concentrations of hydrogen chloride were found to significantly decrease the desublimation temperature (by 30–50°C) compared to a system that has a stoichiometric HCl concentration. Consequently, solid-phase ammonium chloride exists in a wider range of temperatures and pressures. Introducing surfactants (especially higher alcohols) into the system reduces adhesion and affects the crystalline structure of salt deposits—despite the solid phase being stabilized by an excess (superstoichiometric) concentration of hydrogen chloride—which makes surfactants suitable for mitigating the salt deposition challenge. Based on the data obtained, we proposed effective chemical engineering protection methods that use water-soluble corrosion inhibitors in combination with an online automated system for organochlorine control. |
| تدمد: | 1555-6239 0965-5441 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::a00b7570a0f907c781613d82002a340b https://doi.org/10.1134/s0965544122020177 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........a00b7570a0f907c781613d82002a340b |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 15556239 09655441 |
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