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Residence Time Distribution of Particles in a Screw Feeder: Experimental and Modelling Study
Huo, Chaofei1,2; Fan, Chuigang1; Feng, Ping1,2; Lin, Weigang1; Song, Wenli1
2015-09-01
Source PublicationCANADIAN JOURNAL OF CHEMICAL ENGINEERING
ISSN0008-4034
Volume93Issue:9Pages:1635-1642
Abstract

Experiments were conducted to investigate the effects of screw speed and screw feeder inclination on the residence time distribution (RTD) of particles in a screw feeder via a pulse stimulus response technique. Two models based on Markov chains were developed to simulate particle flows within and between pitches. In upward and horizontal screw feeder inclination cases, a three-parameter two-dimensional Markov chain model consisting of parallel active and stagnant zones fitted well with the experimental RTD data, with correlation coefficients (R-2) higher than 0.98, and gave a clear physical meaning for the parameters introduced. In these cases, a high screw speed or a horizontal inclination induced a high probability of forward movement from a pitch to the next pitch (f) during each rotation period of the screw, and a low ratio of stagnant zone to active zone (r) in a pitch. The upward screw feeder inclination yielded a higher diffusion probability from stagnant zone to active zone (d). In the downward screw feeder inclination case, a one-dimensional Markov chain model without a stagnant zone was in agreement with the corresponding experimental data. The analysis showed that during each rotation period of the screw, the particles in a pitch could be transferred not only to the next pitch but also to the following two pitches.

KeywordResidence Time Distribution Markov Chain Screw Feeder Mean Residence Time
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1002/cjce.22240
Indexed BySCI
Language英语
WOS KeywordMARKOV-CHAINS ; SHREDDER RESIDUE ; PARTICULATE ; PYROLYSIS ; REACTOR ; PRODUCTS ; MIXER ; FLOW
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000359706700017
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19445
Collection多相复杂系统国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multi phase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Huo, Chaofei,Fan, Chuigang,Feng, Ping,et al. Residence Time Distribution of Particles in a Screw Feeder: Experimental and Modelling Study[J]. CANADIAN JOURNAL OF CHEMICAL ENGINEERING,2015,93(9):1635-1642.
APA Huo, Chaofei,Fan, Chuigang,Feng, Ping,Lin, Weigang,&Song, Wenli.(2015).Residence Time Distribution of Particles in a Screw Feeder: Experimental and Modelling Study.CANADIAN JOURNAL OF CHEMICAL ENGINEERING,93(9),1635-1642.
MLA Huo, Chaofei,et al."Residence Time Distribution of Particles in a Screw Feeder: Experimental and Modelling Study".CANADIAN JOURNAL OF CHEMICAL ENGINEERING 93.9(2015):1635-1642.
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