Study, Investigation and Control of Caustic Soda Production from Red Sea Water

الموضوعات

علوم تطبيقية وتكنولوجية

الملخص

Control systems are used to maintain process conditions at their desired values by manipulating certain process variables to adjust the variables of interest. The process of electrolysis of red sea water including mixer, electrolysis cell and Multi-Effect Evaporators. A mixer is used to increase the concentration of the sodium chloride in sea water by addition process, the concentrated solution electrolyzed in an electrolysis cell producing liquid caustic soda, hydrogen and chlorine are byproducts. MultiــEffect Evaporators are used to increase the concentration of liquid caustic soda output. The aims of this study are to investigate the production ofliquid caustic soda by electrolysis process, automaticcontrol of the Mixer and MultiــEffectEvaporators and analyze the stability of the Mixer and Multi Effect Evaporators using different methods. A single input/single output (SISO) system was used to control the composition of the solution inside the Mixer, composition of caustic soda and the pressure in the fourth evaporator. A feedback control system was used to control the system. The characteristic equation, the open loop transfer function (OLTF) and the overall transfer function were obtained for stability analysis and tuning. The methods used for tuning and stability analysis were Routh–Hurwitz, direct substitution, Root-Locus and Bode plotto determine the ultimate gain (Ku) and the ultimate period (Pu). The response of the system was plotted by inserting the adjustable obtained parameters. MATLAB documentation (m file) was used to determine the system stability analysis and tuning. The results of this study were for three loops, for composition of the solution inside the mixer control loop1 the average ultimate gain Ku is 11.2 and the average ultimate period is Pu 5.98sec, for the fourth evaporator at multi-effect evaporators pressure control loop2 the average ultimate gain Ku is 14.4 and the average ultimate period Pu is 9.48sec, for composition in the fourth evaporator at multi-effect evaporators control loop3 the average ultimate gain Ku is 20.54 and the average ultimate period Pu is 4.52sec. These methods are proved to be identicalin the results and each of them is qualified to be used for tuning and stability analysis without loss of accuracy. It is recommended that the feedback control system should be used to control the composition and pressure of the fourth evaporator.

روابط وملفات

التعريف والنوع

رقم الوثيقة

f91c7d4c-4f78-4f18-859a-e923c972832d

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل ماجيستير

نوع الملف

pdf text

أسماء الملفات

73084_1.pdf

بيانات النشر

ألقاب المؤلفين

[{"name_ar":" Imad Eldeen AbdAlmoniem Mahjoub","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":" Emadeldeen Abuobida Mohamed Hamouda","title_ar":"اعداد","title_en":"Preparation"},{"name_ar":"Gurashi Abdullah Gasmelseed ","title_ar":"اشراف","title_en":"Supervision"}]

اللغة

English

المصدر والدورية

اسم المصدر

Study, Investigation and Control of Caustic Soda Production from Red Sea Water

المحتوى والصفحات

عدد الصفحات

0

إشراف وإعداد

الإشراف

Imad Eldeen AbdAlmoniem Mahjoub, Gurashi Abdullah Gasmelseed

الإعداد

Emadeldeen Abuobida Mohamed Hamouda

الاقتباسات الببليوغرافية