پديد آورنده :
امين الرعايايي، محمدعلي
عنوان :
بررسي آزمايشگاهي اثر هم‌افزايي بازدارنده‌هاي ترموديناميكي و سينتيكي در پيشگيري از تشكيل هيدرات گازي حاوي هيدروژن سولفيد
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
فرآيند هاي جداسازي
محل تحصيل :
اصفهان : دانشگاه صنعتي اصفهان
صفحه شمار :
چهارده، 76ص. : مصور، جدول، نمودار
استاد راهنما :
محمدرضا احساني، زهراطاهري
توصيفگر ها :
هيدرات گازي , بازدارنده ترموديناميكي , بازدارنده سينتيكي , هم افزايي , اتيلن گلايكول , پلي وينيل كاپرولاكتام , هيدروژن سولفيد , زمان القا
استاد داور :
محسن محمدي، ارجمندمهرباني زين آباد
تاريخ ورود اطلاعات :
1399/07/15
رشته تحصيلي :
مهندسي شيمي
تاريخ ويرايش اطلاعات :
1399/07/19
چكيده فارسي :
فصل چهارم داده ها ونتايج 4 1 مقدمه 73 4 2 اندازه گيري شرايط تعادل فازي ترموديناميكي هيدرات 83 4 2 1 اعتبارسنجي نتايج آزمايشگاهي 83 4 2 2 اندازه گيري نقاط تعادلي تجزيه هيدات گاز ترش دو جزيي 14 4 3 بررسي سينتيك تشكيل هيدرات گازي در حضور بازدارنده ها 34 4 3 1 بررسي سينتيك تشكيل هيدرات گازي در حضور اتيلن گلايكول 34 الف تشكيل هيدرات متان در حضور اتيلن گلايكول 34 ب تشكيل هيدرات گاز ترش دو جزيي در حضور اتيلن گلايكول 84 4 3 2 بررسي سينتيك تشكيل هيدرات گازي در حضور پلي وينيل كاپرولاكتام 51 PVCap 4 3 3 بررسي سينتيك تشكيل هيدرات گازي در حضور همزمان اتيلن گلايكول و 51 PVCap فصل پنجم نتيجهگيري 5 1 نتيجهگيري 35 5 2 پيشنهادات 45 پيوست1 55 پيوست 2 65 پيوست 3 65 منابع 75 چكيده انگليسي 46 ده
چكيده انگليسي :
64Experimental investigation of the synergistic effect of thermodynamic and kineticinhibitors in the prevention of gas hydrates containing hydrogen sulfide Mohammad Ali Aminoroayaei m aminoraya@ce iut ac ir Department of Chemical Engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language FarsiSupervisors Mohammadreza Ehsani ehsanimr@cc iut ac ir Taheriz@ripi irAbstractIn oil and gas pipelines the use of thermodynamic inhibitors is the most common method of protecting the linefrom the dangers of hydrate formation Due to the high consumption of thermodynamic inhibitors and the need torecycle it at the end of transmission lines and with the aim of achieving better performance and optimalconsumption the simultaneous use of thermodynamic and kinetic inhibitors is proposed Accordingly in this study the main purpose of this study was to investigate the effect of the simultaneous presence of thermodynamicinhibitors and kinetic inhibitors on the inhibition of sour gas hydrate formation In this study two component acidgas including methane and hydrogen sulfide monoethylene glycol concentrations of 10 and 20 wt was used asa thermodynamic inhibitor and polyvinyl caprolactam 0 1 and 0 2 wt was used as a kinetic inhibitor First aftervalidating the laboratory system based on comparing the laboratory data of methane and pure water obtained fromthe system with the data published in scientific sources measuring the thermodynamic equilibrium points of two component sour gas in the presence and absence of ethylene glycol by volume method Fixed with step heating Laboratory data had an acceptable agreement AAD 0 16 with the prediction of HWHYD software To designkinetic experiments for the simultaneous presence of two inhibitors of ethylene glycol and polyvinyl caprolactam first the kinetics of methane hydrate formation in the presence of ethylene glycol with different concentrations range 5 to 20 by weight at the same operating point was performed The results showed that in these tests thedisplacement of the equilibrium curve due to the presence of a thermodynamic inhibitor caused the driving forceapplied to the system to decrease and interfere with the study of the kinetic effect In order to solve this case theexperiments were followed with the same degree of supercooling approach In the two component sour gas hydrateformation tests in the presence of ethylene glycol the target temperature for the control system is 10 and 20 byweight of ethylene glycol equal to 5 2 and 1 3 C equivalent to constant subcooling 9 8 C was determinedrelative to laboratory equilibrium data In experiments related to the presence of kinetic inhibitors the resultsshowed that the inhibitory performance decreased sharply with increasing subcooling from 9 8 C to 12 8 C inorder to evaluate the system operation at 2 C operating temperature Simultaneous presence of two thermodynamicand kinetic inhibitors enhanced the inhibitory function against hydrate formation According to the thermodynamicinhibitor mission if the inhibitor concentration does not cause proper displacement of the hydrate fuzzy equilibriumcurve in order to cover operating conditions outside the hydrate area the system has a high risk of hydrateformation and the higher the inhibitor concentration induction time about 3 hours in the presence 20 ethyleneglycol The risk of hydrate formation is even higher than in the control system In the simultaneous presence ofethylene glycol with concentrations of 20 and 0 1 PVCap no signs of hydration were observed for 48 hours In comparison with the presence of only 0 2 PVCap which protected the system for more than 48 hours byconsidering subcooling of 9 8 C equivalent to 5 C operating temperature the simultaneous presence of twoinhibitors resulted in an operating temperature of 5 C to 1 3 C Keywords gas hydrate thermodynamic inhibitor kinetic inhibitor Synergistic ethylene glycol PVCap hydrogen sulfide induction time
استاد راهنما :
محمدرضا احساني، زهراطاهري
استاد داور :
محسن محمدي، ارجمندمهرباني زين آباد
