Optimum operating conditions of the catalytic reformers in the Basrah refinery plant

العناوين الأخرى

الظروف التشغيلية المثلى المحفزة في مصفى البصرة

مقدم أطروحة جامعية

al-Zuwar, Ala Jabir Dawud

مشرف أطروحة جامعية

Jasim, Ala Abd al-Razzaq

أعضاء اللجنة

Jawad, Najm A.
Zachi, Aziz H.
al-Faizi, Mustafa M.
Sukkar, Khalid Ajami

الجامعة

جامعة البصرة

الكلية

كلية الهندسة

القسم الأكاديمي

قسم الهندسة الكيميائية

دولة الجامعة

العراق

الدرجة العلمية

ماجستير

تاريخ الدرجة العلمية

2012

الملخص الإنجليزي

The catalytic reforming processes ameliorated the specifications of gasoline production in which a heavy naphtha with low octane number is converted to a reformate with high octane number through a group of catalytic reactions such as dehydrogenation, isomerization, dehydrocyclization and hydrocracking.

At the same time, it produces hydrogen (H2) and liquefied petroleum gas (LPG) as its by-products.

In Basrah refinery, there are two types of catalytic reformers where the first type is working as a radial flow and the second type with an axial flow.

Both feedstock systems input from the top section and output from the down section of the reactor.

In the present work the theoretical proposal model depends on the industrial system found in the Basrah refinery plant.

The system is provided with three catalytic reformers and a central furnace for amending the decrease in heating due to the effect of endothermic reactions.

Temperature is considered as one of the important factor to produce a good gasoline while other factors such as pressure and feed flow rate are tested to improve the quality of gasoline production.

The aim of this work can be divided into two parts.

The first part deals with the simulation of catalytic reformed system relative to Basrah refinery plant where the typical conditions of the catalytic reforming reactors are ( 500 °C ) and (30 atm) for the first and second reactors while the 3rd reactor is operated at (490 °C) and (30 atm).

So, in the this section the effect of these conditions, operating temperature and pressure and hydrogen to hydrocarbon ratio, will be tested over a wide range of operation conditions.

The change in properties of gasoline production due to the change in operating conditions will be discussed and investigated.

A computer program by using visual basic version 6.0 is used for solving the differential equations that describe the profiles of products mole flow rates and temperatures along the catalyst bed for the three reactors.

The theoretical results obtained are compared with the industrial data and gave, a good agreement. The second part of this work deals with the optimum design of catalytic reformer system.

The optimum yield of aromatic production is selected by testing the values of operating conditions over a wide range.

The Genetic algorithm method GA in [ MATLAB)) [7.6.0.324 (R2008a)] program is used to solve the optimization model.

The model is operated under temperature and pressure constrains so, the model can be considered as non liner optimization model with multi-constrains.

The behavior of aromatic yield shows two scenarios when the operating temperature is changed from 300-650oC.

Also, the effect of operating pressure have given the same scenarios when it varied from (10 to 60 atm.).

The results show that the values of optimum temperature, pressure and hydrogen to hydrocarbon ratio (5.9) relative to Basrah refinery plant are 505 oC and 30 atm.

respectively.

التخصصات الرئيسية

العلوم الهندسية والتكنولوجية (متداخلة التخصصات)
الكيمياء

الموضوعات

• الحوسبة
• النفط
• العراق
• البصرة
• مصافي النفط

عدد الصفحات

94

قائمة المحتويات

• APA
• MLA
• AMA

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-317139