INVESTIGATION OF USING KALINA CYCLE FOR WASTE HEAT RECOVERY IN A CEMENT PLANT

نویسندگان

چکیده

The cement industry is considered one of the most energy intensive industrial processes in world. cost average about 55% total production. Massive due to both heat consumption kiln operations and electrical power for different grinding mills, fans, motors. Waste recovery a way reduce production process by using system generate with no more fuel or consumption. In typical plant, 25% energy, 75% thermal energy. About 35-40% lost through waste streams. 26% input kiln, preheater surfaces, convection from preheaters. This article reports on plant Egypt. Measurements analyses have been performed determine stages manufacturing lines. annual losses surface, preheater, cooler are estimated as 79.23, 44.32, 43.6 GWh at temperatures 314, 254℃, respectively. Analysis optimization Kalina cycle Heat Recovery (WHR) shell, cooler, produce electricity carried out ASPEN software. A parametric study has design parameters including turbine inlet pressure, mass flow rate, ammonia water concentration. Two alternatives investigated separate combined WHR preheater. value net output 7.35 MW compared 6.86 saving 23%. تعتبر صناعة الأسمنت من أکثر العمليات الصناعية کثافة في استخدام الطاقة العالم. يبلغ متوسط ​​تکلفة حوالي 55٪ التکلفة الإجمالية لإنتاج الأسمنت. ترجع تکلفة الهائلة إلى کل استهلاک الحرارة عمليات الفرن واستهلاک الکهربائية للعمليات المختلفة لعمليات الطحن للمواد الخام والتبريد عن طريق المراوح نقل الخامات. يعد استرداد المهدرة طريقة لتقليل إجمالي لعملية إنتاج باستخدام نظام لتوليد دون مزيد الوقود أو الکهربائية. مصنع النموذجي، يتم فقدان 35-40 ٪ الحرارية خلال تيارات المهدرة. يفقد الغبار، وتصريف الکلنکر، والإشعاع الفرن، وأسطح التسخين المسبق، والحمل الحراري وهذا يمثل ما يقرب 26٪ مدخلات الحرارة. نتناول هذا البحث طرق أسمنت نموذجي مصر دورة کالينا. تم إجراء القياسات والتحليلات لتحديد المفقودة المراحل لخطوط تصنيع تقدر الخسائر السنوية سطح والتسخين المسبق والمبرد بـ 79.23 و44.32 و43.6 جيجاوات ساعة بمتوسط ​​درجات حرارة 314 و314 و254 درجة مئوية على التوالي. تحليل وتحسين کالينا لاستعادة الکهرباء برنامج اسبين دراسة بارا مترية معايير تصميم بما ذلک ضغط مدخل التوربينات، ومعدل التدفق الکتلي، وترکيز نسبة الماء والأمونيا. فحص بديلين للتصميم فصل ودمج الطريقتين وتطبيقهم مرحلة المسبق. تبلغ قيمة صافي خرج مجتمعة ميجاوات مقارنة منفصل مع توفير 23٪.

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ژورنال

عنوان ژورنال: Journal of Al-Azhar University Engineering Sector

سال: 2021

ISSN: ['1687-8418']

DOI: https://doi.org/10.21608/auej.2021.166642