Fenomena dan Kecepatan Minimum Fluidisasi

Widayati Widayati

Abstract


Phenomenon and the minimum fluidization velocity (Umf) solid-gas depend of particle type, gas flow rate, column diameter and height of solids bed. This research was conducted on sand of quartz, iron and volcano Merapi (group B the particle) in the column with 6 cm diameter and height of the bed that varies are 6 cm, 8 cm and 10 cm. Observations began after the air with the lowest velocity flow from the bottom upwards through the bed. From the observations obtained a phenomenon that occurs is the fixed bed, bubbling fluidization and slugging fluidization. Umf in the height of bed 6 cm were 10.3 cm/sec, 7.3 cm/sec and 4.8 cm/sec. While at the height of bed 8 cm were 11.9 cm sec, 7.3 cm/sec and 5.1 cm/sec. and at the height of the bed 10 cm value (Umf)  obtained were 8.8 cm/sec, 8.8 cm/sec and 5.8 cm/sec. Based on theoretical, the Umf  for quartz sand was 12.0 cm/sec, iron sand 16.2 cm/sec and sand volcano Merapi 12.3 cm/sec. Thus, the value Umf, an experiment that comes closest to the value Umf theory only occurs for the use of quartz sand column diameter of 6cm and 8cm height of the bed.


Keywords


minimum velocity (Umf); fixed bed; bubbling fluidization; slugging fluidization.

Full Text:

PDF (Indonesian)


DOI: https://doi.org/10.31315/e.v10i2.339

Refbacks




Eksergi p-ISSN  1410-394X, e-ISSN 2460-8203,  is published by Chemical Engineering Department, Faculty of Industrial Technology, Universitas Pembangunan Nasional "Veteran" Yogyakarta.

Contact Prodi Teknik Kimia UPN "Veteran" Yogyakarta Jl. SWK 104 (Lingkar Utara) Condong catur Sleman Yogyakarta

 

Creative Commons License
Eksergi by http://jurnal.upnyk.ac.id/index.php/eksergi/index/ is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.