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مدلسازی زبالهسوز صنعتی جهت پسماندهای پالایشگاه و بررسی پارامترهای مؤثر بر بهبود عملکرد | ||
| مدل سازی در مهندسی | ||
| دوره 22، شماره 78، آبان 1403، صفحه 103-122 اصل مقاله (1.53 M) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22075/jme.2024.31428.2510 | ||
| نویسندگان | ||
| محسن باهوش1؛ بهاره بیدار2؛ محمدرضا سردشتی بیرجندی2؛ فرهاد َشهرکی* 3 | ||
| 1کارشناسی ارشد، گروه مهندسی شیمی، دانشکده مهندسی شهید نیکبخت، دانشگاه سیستان و بلوچستان، زاهدان، ایران | ||
| 2استادیار، گروه مهندسی شیمی، دانشکده مهندسی شهید نیکبخت، دانشگاه سیستان و بلوچستان، زاهدان، ایران | ||
| 3استاد، گروه مهندسی شیمی، دانشکده مهندسی شهید نیکبخت، دانشگاه سیستان و بلوچستان، زاهدان، ایران | ||
| تاریخ دریافت: 12 مرداد 1402، تاریخ بازنگری: 09 فروردین 1403، تاریخ پذیرش: 08 خرداد 1403 | ||
| چکیده | ||
| زبالهسوزهای صنعتی در پالایشگاههای گاز یا در واحدهای بازیابی گوگرد، وظیفه از بین بردن گازهای زائد تولید شده در فرآیند نظیر سولفید هیدروژن (H2S) و دیاکسیدکربن (CO2) را بر عهده دارند. اغلب این واحدها با مشکلاتی نظیر سوختن ناقص، نبود سیستم کنترلی مناسب برای اندازهگیری و وجود آلایندههایی مانند مونوکسیدکربن و اکسیدهای ازت و غیره، روبهرو هستند. لذا در این پژوهش، به منظور بهبود عملکرد زبالهسوز پالایشگاه فجر جم، مدلسازی کوره به وسیله دینامیک سیالات محاسباتی (CFD) انجام گردید. از نرمافزار Fluent 6.3 برای مدلسازی زبالهسوز استفاده شده است. برای رسیدن به این هدف، پارامترهایی همچون نسبت سوخت به هوا در مجرای اصلی ورود هوا، میزان و نقش هوای اضافی ورودی در پایین دودکش، تعبیه مجرای اضافی ورود هوا در انتهای کوره برای اختلاط بیشتر اکسیژن و H2S ، تزریق هوا به مجرای ورودی گازهای اسیدی و امکانسنجی پیشگرم کردن هوای ورودی و تأثیر آن بر روی بازدهی احتراق، مورد بررسی قرارگرفت. نتایج مدلسازی نشان داد که افزایش دبی هوا میتواند میزان CO و H2S را کاهش دهد، اما میزان ترکیبهای NOx افزایش مییابد. به منظور برقراری تعادل بین میزان خروجی آلایندهها از کوره، راهکارهایی برای بهبود عملکرد واحد ارائه شده و محدوده دبی مناسب هوای اضافی در کوره مشخص گردید. | ||
| کلیدواژهها | ||
| زبالهسوز صنعتی؛ مدلسازی؛ گاز طبیعی؛ سولفید هیدروژن (H2S)؛ بهبود عملکرد؛ دینامیک سیالات محاسباتی (CFD) | ||
| عنوان مقاله [English] | ||
| Modeling of an Industrial Incinerator for Refinery Wastes and Investigating the Effective Parameters for Performance Improvement | ||
| نویسندگان [English] | ||
| Mohsen Bahoosh1؛ Bahareh Bidar2؛ Mohammad Reza Sardashti Birjandi2؛ Farhad Shahraki3 | ||
| 1MSc, Department of Chemical Engineering, Shahid Nikbakht Faculty of Engineering, University of Sistan and Baluchestan, Zahedan, Iran | ||
| 2Assistant Professor, Department of Chemical Engineering, Shahid Nikbakht Faculty of Engineering, University of Sistan and Baluchestan, Zahedan, Iran | ||
| 3Professor, Department of Chemical Engineering, Shahid Nikbakht Faculty of Engineering, University of Sistan and Baluchestan, Zahedan, Iran | ||
| چکیده [English] | ||
| Industrial waste incinerators in gas refineries or sulfur recovery units are responsible for eliminating the waste gases such as hydrogen sulfide (H2S) and carbon dioxide (CO2) produced in the process. Most of these units are facing problems such as incomplete combustion, lack of proper control systems for measurement, and the presence of pollutants such as carbon monoxide and nitrogen oxides, etc. Therefore, in this research, to improve the performance of the waste incinerator of Fajr Jam Refinery, furnace modeling was done by computational fluid dynamics (CFD). The software Fluent 6.3 is used for the modeling of the incinerator. To achieve this goal, parameters such as the ratio of fuel to air in the inlet duct of main air, the amount and role of the additional air inlet at the bottom of the chimney, the installation of the additional air inlet duct at the end of the furnace for mixing more oxygen and H2S, air injection into the inlet duct of acid gas and the feasibility of preheating the incoming air and its effect on the combustion efficiency was investigated. The modeling results showed that increasing the airflow can reduce the amount of CO and H2S, but the amount of NOx compounds increases. To establish a balance between the output of pollutants from the furnace, solutions to improve the unit performance were presented, and the appropriate flow range of excess air in the furnace was determined. . | ||
| کلیدواژهها [English] | ||
| Incinerator, Modeling, Natural gas, Hydrogen sulfide (H2S), Performance improvement, Computational Fluid Dynamic (CFD) | ||
| مراجع | ||
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