A Theoretical Performance of MR-deDuster as a Fine Dust Emission Control System N. Hasyimah 1, a , M. Rashid 1, b* and H. Norelyza 1, c 1 Air Resources Research Laboratory Malaysia-Japan International Institute of Technology 54100 UTM Kuala Lumpur, Malaysia a syimahashim_redsp@hotmail.com, b rashidyusof.kl@utm.my, c norelyza@gmail.com *corresponding author Keywords: Particle control; Air pollution; Multi-cyclone; Collection efficiency. Abstract. The theoretical performance of a newly developed multi-cyclone system known as MR- deDuster was investigated in term of its collection efficiency tested on a different type of particles. In addition, the performance of the system was also evaluated based on the various diameter of its vortex finder. A modified version of semi-empirical equations introduced by Lapple was used in the prediction. The results showed that the collection efficiency of the system increases with the diameter of vortex finder and density of particles. Details of the finding are discussed and presented in this paper. Introduction There are numbers of air pollution control technologies that can be applied to remove particulate pollution from various sources. Cyclone separators which is the center of this study is one of the basic classes of particulate collection equipment commonly applied in many industries. However, cyclone separators are also referred as precleaners as they are often used to reduce inlet dust loading by removing larger size particles upstream of a more efficient dust collector device. In applications where many small cyclones are arranged in parallel, the entire system is called a multiple tube cyclone or multicyclone. Generally, the efficiency of cyclone increases with particle size and density, inlet duct velocity, cyclone body length, number of gas revolutions in the cyclone, ratio of cyclone body diameter to gas exit diameter, dust loading, and smoothness of the cyclone inner wall. Meanwhile, cyclone efficiency will decrease with increases in gas viscosity, body diameter, and gas inlet duct area. A common factor contributing to decreased control efficiencies in cyclones is leakage of air into the dust outlet [1]. A newly developed multi-cyclone system known as MR-deDuster for fine particulate control has been tested and reported [2,3,4]. The development of the MR-deDuster was based on semi- empirical equations introduced by Lapple coupled with standard cyclone dimensions by Stairmand. Its miniature cyclones were constructed using small body diameter and high body length [2]. This paper presents the theoretical performance of the MR-deDuster based on different diameter of its vortex finder and density of particles. Materials and Methods Theoretical Performance of MR-deDuster. In this study, the performance of MR-deDuster in term of its collection efficiency had been theoretically predicted by using the semi-empirical model which introduced by Lapple [3]. The collection efficiency was calculated based on the cut-diameter (d pc ) as shown in Eq. 1, Advanced Materials Research Vol. 1125 (2015) pp 317-321 Submitted: 2015-01-06 © (2015) Trans Tech Publications, Switzerland Revised: 2015-04-30 doi:10.4028/www.scientific.net/AMR.1125.317 Accepted: 2015-05-25 All rights reserved. No part of contents of this paper may be reproduced or transmitted in any form or by any means without the written permission of Trans Tech Publications, www.ttp.net. (ID: 161.139.152.210-31/07/15,09:44:46)