Experimental Study on the Pressure Drop and Efficiency of an Aero-Cyclone with Guide Vanes on the Vortex Finder

Authors

1 Faculty of Mechanical Engineering, Semnan University, Semnan, Iran

2 Faculty of Mechanical Engineering, Semnan University

Abstract

Cyclone separators are used to separate the solid particles from the gas streams in industrial applications. A strong swirling turbulent flow inside the aero-cyclone causes the particle separation due to their inertia. Two important parameters for cyclone design are the pressure drop and separation efficiency. The cyclone geometry strongly affects the efficiency and pressure drop. Therefore, in this article, different new geometries for the vortex finder of the cyclone are considered and tested experimentally. The efficiency and pressure drop have been measured and compared for different fabricated vortex finders. A typical high-efficiency Stairmand cyclone was considered and the guide vanes with an angle of 10 and 20 degrees to the horizontal plane were added to the original vortex finder. Experimental results show that for the guide vanes with 20 degrees angle, and at the gas velocities between 10 and 20 m/s, the pressure drop is reduced by 58% and the efficiency is increased by 2.3%.

Keywords


[1] جعفری فشارکی پ (1388) آشنایی با طراحی سیستم‌های تهویه صنعتی و تصفیه کننده‌های هوا. انتشارات فن آوران، تهران.
[2] Altmeyer S, Altmeyer Mathieu V, Jullemier V, Contal P, Midoux N, Rode S, Leclerc JP (2004) Comparison of different modelsof cyclone prediction performance for various operating conditions using a general software. Chem Eng Process 43(4): 511-522.
[3] Slack M, Prasad RO, Bakker A, Boysan F (2000) Advances in cyclone modeling using unstructured grids. Trans IChemE 78(Part A): 1098-1104.
[4]  Hoffmann AC, Stein LE, Bradshaw P (2003) Gas cyclones and swirl tubes: principles, design and operation. Appl Mech Rev 56(2): B28-B29.
[5]  Bernardo S, Mori M, Peres AP, Dionı´sio RP (2006) 3-D computational fluid dynamics for gas and gas-particle flows in a cyclone with different inlet section angles. Powder Technol 162: 190-200.
[6] Safikhani H, Shams M, Dashti S (2011) Numerical simulation of square cyclones in small sizes. Adv Powder Technol 22: 359-365.
[7] Qiu Y, Deng B, Nyung Kim C (2012) Numerical study of the flow field and separation efficiency of a divergent cyclone. Powder Technol 217: 231-237.
[8]  Zhao B, Su Y, Zhang J (2006) Simulation of gas flow pattern and separation efficiency in cyclone with conventional single and spiral double inlet configuration. Chem Eng Res Des 84: 1158-1165.
[9] Zhou F, Sun G, Han X, Zhang Y, Bi W (2018) Experimental and CFD study on effects of spiral guide vanes on cyclone performance. Adv Powder Technol 29(12): 3394-3403.
[10] Karagoz I, Avci A, Surmen A, Sendogan O (2013) Design and performance evaluation of a new cyclone separator. J AEROSOL SCI 59: 57-64.
[11] Qiang L, Qinggong W, Weiwei X, Zilin Z, Konghao Zh (2020) Experimental and computational analysis of a cyclone separator with a novel vortex finder. Powder Technol 360: 398-410.
[12] اسماعیلی م (1379) تعیین بازده سیکلون با جریان برگشتی و هوای فشرده در اشل نیمه صنعتی و آزمایشگاهی. دانشکده مهندسی شیمی. دانشگاه علم و صنعت ایران.
[13] پرواز ف، رفعی ر و طالبی ف (1397) بررسی اثرات تغییر قطر لوله خروجی آئروسیکلون برعملکرد آن در جریان دو فازی گاز و قطره. مهندسی مکانیک دانشگاه تبریز 53-45 :(2)48.
[14] Vahedi SM, Parvaz F, Rafee R, Khandan Bakavoli M )2018) Computational fluid dynamics simulation of the flow patterns and performance of conventional and dual-cone gas-particle cyclones. Journal of Heat and Mass Transfer Research 5(1): 27-38.
[15] Zhou LX, Li RX, Qiu Hung XQ (1990) A new technology to reduce the pressure drop of a cyclone separator. The Second Word Congress of particle Technology, Kyto, Japan.
[16] Fayed M, Otten L (2013) Handbook of powder science & technology. Springer Science & Business Media.
[17] Towler G, Sinnott R (2012) Chemical engineering design: Principles, practice and economics of plant and process design. Elsevier.
[18] Gerhart PM, Gerhart AL, Hochstein JI (2018) Munson, Young and Okiishi's fundamentals of fluid mechanics. 8th edn. John Wiley & Sons.
[19] Holman, JP (2001) Experimental methods for engineers. 7th edn. MCGrraw Hill, Singapore.
[20] اخباری‌فر س (1388) جداسازی غبار بوسیله سیکلون جریان برگشتی و جت پرتاب‌کننده ذرات. پایان‌نامه کارشناسی ارشد، دانشکده مهندسی شیمی، دانشگاه علم و صنعت، تهران.