دانلود رایگان مقاله انگلیسی یک جایگزین انرژی مناسب در تولید بزرگ مقیاس روغن سویا - الزویر 2019

عنوان فارسی
یک جایگزین انرژی مناسب در تولید بزرگ مقیاس روغن سویا
عنوان انگلیسی
An energy-friendly alternative in the large-scale production of soybean oil
صفحات مقاله فارسی
0
صفحات مقاله انگلیسی
11
سال انتشار
2019
نشریه
الزویر - Elsevier
فرمت مقاله انگلیسی
PDF
نوع مقاله
ISI
نوع نگارش
مقالات پژوهشی (تحقیقاتی)
رفرنس
دارد
پایگاه
اسکوپوس
کد محصول
E10745
رشته های مرتبط با این مقاله
صنایع غذایی
گرایش های مرتبط با این مقاله
علوم مواد غذایی، فناوری مواد غذایی
مجله
مجله مدیریت زیست محیطی - Journal of Environmental Management
دانشگاه
School of Life Science and Technology - Beijing University of Chemical Technology - China
کلمات کلیدی
روغن سویا، استخراج، بازیابی حرارت، بستر سیال، بازیابی هگزان، تحویل دادن
doi یا شناسه دیجیتال
https://doi.org/10.1016/j.jenvman.2018.09.059
۰.۰ (بدون امتیاز)
امتیاز دهید
چکیده

ABSTRACT


Soybean oil is widely used as cooking oil, whereas the soybean cake is a valuable ingredient for animal food. The extraction of soybean oil is an energy-intensive process, with additional significant impact on the environment via the wastewater and hexane emissions. The research investigated different ways to minimize the energy consumption. In a traditional process, both direct (live) steam and indirect steam heating (jackets, tubular exchangers) are used to deliver the required heat duty. Direct steam injection is restricted to the first evaporator and the stripper, for a total of 620 kg/h. Indirect steam is also applied in the evaporators for a total of 6.44 MW. The desolventizing process requires a steam energy input of 8.15 MW. Integration of a heat exchanger network in the evaporation and stripping part of the process reduces the amount of direct steam usage from 620 kg/h to 270 kg/h and of the indirect heat duty from 6.44 to 5.05 MW. In the cake desolventizing part of the process, the energy requirement is reduced from 8.15 to 2.12 MW. The overall gross energy saving is hence ∼50%. The improvements moreover reduce both the waste water loadings by 56.5% and the CO2 emissions by 62.5%. Hexane emissions are moreover significantly (> 90%) reduced.

نتیجه گیری

Conclusions


The entire improved process was displayed in Fig. 8. By designing a new configuration for the evaporator-stripper part of the process, the live steam usage is reduced from 620 kg/h to 270 kg/h, and the total heat duty is reduced by 21.9%. The original desolventization process required an energy input of 8.15 MW. At 100% heat recovery, the application of the fluidized bed desolventization with preheating of nitrogen reduces this requirement to 2.12 MW which results in a saving of 74%. The improvements moreover reduce both the waste water loadings by 56.6% and the CO2 emissions by 62.5%. Hexane emissions are moreover significantly reduced by over 90%.


بدون دیدگاه