Науковий вісник НГУ

Energy efficiency assessment of multi-stage convective drying of concentrates and mineral raw materials

• 
• 

User Rating:  / 0

PoorBest 

Details

Category: Power supply technologies

Last Updated on 16 July 2014

Published on 21 March 2014

Hits: 3980

Authors:

N.A. Аrtyukhova, Sumy State University, Postgraduate Student of Processes and Equipment of Chemical and Petroleum-Refineries Department, Sumy, Ukraine.

A.B. Shandyba, Cand. Sci. (Tech.), Associate Professor, Sumy National Agrarian University, Head of the Protection of Labour Department, Sumy, Ukraine.

А.Ye. Аrtyukhov, Cand. Sci. (Tech.), Associate Professor, Sumy State University, Senior Lecturer of the Processes and Equipment of Chemical and Petroleum-Refineries Department, Sumy, Ukraine.

Abstract:

Purpose. To substantiate the possibility of the drying energy costs reduction through implementation of multi-stage shelf apparatus with different shelf contacts designs and rational organization of drying agent flow.

Methodology. The results presented in the article, were obtained by the theoretical analysis of the material heating intensity, the conditions for the fluidized bed forming in the apparatus and the efficiency of each stage considering drying cost reduction. The developed methodology for the concentrates and mineral raw materials drying energy efficiency assessment takes into account the features of multi-stage shelf apparatus.

Findings. It is shown that the implementation of multi-stage shelf dryers can reduce the energy costs by the rational selection of shelf contacts designs and the mode of drying agent movement. We have obtained the analytical dependences allowing us to optimize the efficiency of each stage of shelf dryer and unit drying costs.

Originality. For the first time we have obtained the results confirming that the achievement of energy costs reducing is possible by the improvement of the efficiency on each dryer stage. The applicability of the shelf dryers for dehydration of a wide range of concentrates and mineral raw materials is presented.

Practical value. The presented results of theoretical research are the basis for engineering calculation methods development of multi-stage shelf dryers. Based on the results the improved shelf dryers designs have been developed and granted by title of protection.

References:

1. Коновалов В.И. Современные вопросы теории переноса при сушке / В.И. Коновалов, Т. Кудра, Н.Ц. Гатапова // Вестник Тамбовского государственного технического университета. – 2008. – Том 14, № 3. – С. 538–559.

Konovalov, V.I., Kudra, T. and Gatapova, N.Ts. (2008), “Modern issues of transfer theory in drying”, Vestnik Tambovskogo Gosudarstvennogo Tekhnicheskogo Universiteta, Volume 14, no. 3, pp. 538–559.

2. Павлыш В.Н. Математическое моделирование процесса обезвоживания увлажненной горной массы / В.Н. Павлыш,
И.В. Тарабаева // Физико-технические проблемы горного производства. – 2009. – Вып. 12. – С. 103–107.

Pavlysh, V.N. and Tarabaeva, I.V. (2009), “Mathematical simulation of the wet rock dehydration process”, Fiziko-Tekhnicheskiye Problemy Gornogo Proizvodstva, Volume 12, pp. 103–107.

3. Техника и технологии псевдоожижения: процессы термообработки и вулканизации / [Дворецкий С.И., Королёв В.Н., Нагорнов С.А. и др.]. – М.: Машиностроение-1, 2006. – 232 с.

Dvoretskiy, S.I., Korolev, V.N. and Nagornov, S.A. (2006), Tekhnika i tekhnologii psevdoozhizheniya: protsessy termoobrabotki i vulkanizatsii [Technique and Technologies of Fluidization: Heat Treatment and Vulcanization Processes], Mashinostroenie, Moskow, Russia.

4. Поперечний А. М.  Аналіз конструктивних особливостей  сушарок із псевдозрідженим шаром  і перспективи їх удосконалення / А.М. Поперечний, І.В. Жданов // Обладнання та технології харчових виробництв. – 2009. – Вип. 20. –
С. 44–52.

Poperechnyi, A.M. and Zhdanov, I.V. (2009), “Analysis of fluidized bed dryers structural features and prospects of their improvement”, Obladnannia ta Tekhnolohiï Kharchovykh Vyrobnytstv, Volume 20, pp. 44–52.

5. Artiukhova, N.A. and Yukhymenko, N.P. (2012), “Multistaged drying-classification apparatus of energy recover”, Proc. of the 2ndInt.Kazakhstan-RussianConferenceonChemistryandChemicalEngineering, E.A. Buketov Karaganda state university, Karaganda, Kazakhstan, Volume 1, pp. 41–43.

6. Донат Е.В. Аппараты со взвешенным слоем для интенсификации технологических процессов / Е.В. Донат,
А.И. Голобурдин. – Л.: Химия, 1993. – 144 с.

Donat, Ye.V. and Goloburdin, A.I. (1993), Apparaty so vzveshennym sloem dlya intensifikatsii tekhnologicheskikh protsessov [Apparatus With a Fluidized Bed for Intensification of Technological Processes], Khimiya, Leningrad, Russia.

7. Barsky, E. and Barsky, M. (2004), “Master curve of separation processes”, Physical Separation in Science and Engineering, Volume 13, no. 1, рр. 1–13.

8. Апарати завислого шару. Теоретичні основи й розрахунок / [Юхименко М.П., Вакал С.В., Кононенко М.П. та ін.] – Суми: Собор, 2003. – 304 с.

Yukhymenko, N.P., Vakal, S.V. and Kononenko, M.P. (2003), Aparatyzavyslohosharu. Teoretychni osnovy i rozrakhunok [Fluidized Bed Apparatus. Theoretical Basis and Calculation], Sobor, Sumy, Ukraine.

9. Шандиба Н.О. Методика рекурентного розрахунку гравітаційної поличної сушарки / Н.О. Шандиба, М.П. Юхименко // Наукові праці Одеської національної академії харчових технологій. – 2011. – Вип. 39, Т. 2. – С. 44–48.

Shandyba, N.O. and Yukhymenko, N.P. (2011), “Recurrent calculation method of the gravitational shelf dryers”, Naukovi Pratsi Odeskoi Natsionalnoi Akademii Kharchovykh Tekhnolohii, issue 39, Volume 2, pp. 44–48.

10. Патент на корисну модель №74070 Україна МПК F26B 3/02 (2006/01), F26B 17/12 (2006/01). Пристрій для сушіння дисперсних матеріалів / Артюхова Н.О., Юхименко М.П., Артюхов А.Є., Шандиба О.Б. – №u201205954; Заявлено 16.05.2012; Надрук. 10.10.2012, Бюл. №19, 2012 р.

Artyukhova, N.A., Yukhymenko, N.P., Artyukhov, A.Ye. and Shandyba, A.B. (2012), Patent no.74070, “Device for drying of dispersed materials”, Ukraine.

2014_1_artyukhova
2014-07-16  172.17 KB  1155

• < Prev