Effects of Impeller Speed, Atomising Air Flow Rate and Fluidising Temperature in Agitated Fluidised Bed Granulation of Cocoa-Milk Powders

2005 ◽  
Vol 1 (3) ◽  
Author(s):  
Mohd Shamsul Anuar ◽  
Siti Masrinda Tasirin
Keyword(s):  
Moisture Content ◽  
Flow Rate ◽  
Air Flow ◽  
Impeller Speed ◽  
Fluidised Bed ◽  
Air Flow Rate ◽  
Operational Parameters ◽  
Operational Variables ◽  
Fluid Bed ◽  
Fluid Bed Granulation

Mechanically agitated fluid bed granulators with inserted impeller are currently favoured by the industry due to better particle mixing, heat transfer and effective particle growth. However, effects of operational variables such as impeller speed, atomising air flow rate and fluidising temperature on the physical characteristics of the generated granules are still not fully quantified. Scaling-up of industrial fluid bed granulation processes especially in the pharmaceutical industry are done empirically. In this paper, a study is described on the effects of impeller speed, atomising air flow rate and fluidising temperature on the flowability, moisture content, mean particle size and size distribution of the granulated cocoa-milk drink powder in an agitated fluid bed granulation process. Findings showed that when all the values of the three investigated operational parameters were increased, granules with better flowability characteristics, lower moisture content, smaller and more uniformed granules were obtained in the range tested.

New Approach to Quartz Coarse Particles Flotation Using Nanobubbles, with Emphasis on the Bubble Size Distribution

2019 ◽  
Vol 19 (01) ◽  
pp. 1850048
Author(s):  
Sabereh Nazari ◽  
Sied Ziaedin Shafaei ◽  
Mahdi Gharabaghi ◽  
Rahman Ahmadi ◽  
Behzad Shahbazi ◽  
...  
Keyword(s):  
Size Distribution ◽  
Flow Rate ◽  
Bubble Size ◽  
Air Flow ◽  
Bubble Size Distribution ◽  
Impeller Speed ◽  
Coarse Particles ◽  
Air Flow Rate ◽  
Operational Parameters ◽  
Flotation Process

This study investigates the influence of bubble size distribution and operational parameters on the flotation behavior of quartz coarse particles. The parameters evaluated during this study include the different bubble size distribution, air flow rate and impeller speed. Experiments were conducted at three different bubble sizes: 110, 171 and 293[Formula: see text]nm as db(32). Then, the results were compared with common air bubbles of the conventional flotation process. The bubble size distribution was measured using a laser particle size analyzer (LPSA). Results showed that the recovery of [Formula: see text]m particles increased in presence of nano bubbles (NBs) up to 25% compared to the conventional flotation. The maximum recovery of 95.59% was obtained using NBs size of 171[Formula: see text]nm at the impeller speed of 900[Formula: see text]rpm and air flow rate of 30[Formula: see text]l/h. It was also indicated that NBs caused an increasing in flotation recovery for all the samples in any size ranges in comparison with the conventional method.

scholarly journals Effect of Cigarette Packaging Sealing on Cigarette Moisture Content

2018 ◽  
Vol 53 ◽  
pp. 01023
Author(s):  
Jianbo Zhan ◽  
Han Zheng ◽  
Hao Wang ◽  
Jun Jiao ◽  
Ying Zhang ◽  
...  
Keyword(s):  
Moisture Content ◽  
Flow Rate ◽  
Air Flow ◽  
Storage Period ◽  
Air Flow Rate ◽  
Cigarette Tobacco ◽  
Temperature And Humidity ◽  
Improvement Measures ◽  
And Storage ◽  
Humidity Environment

The moisture content of cigarette tobacco directly affects the smoking quality and storage period of cigarettes. The influence of the sealing property of cigarette packets on the moisture of the cigarette was studied, and a solution to improve the sealing property of the small package was provided. At the same time, the standard boundary for judging the packaging tightness of cigarette packets is calculated. Under different temperature and humidity environment, the air flow rate of the same packing box is higher than that of the 30-40mL/min interval. Improvement measures were applied to determine the packing seal value index of soft package cigarettes under certain conditions

Influence of Operating Parameters on Physicochemical Properties of Fruit Juice Powders Produced by Spray Drying

2014 ◽  
Vol 941-944 ◽  
pp. 1196-1200
Author(s):  
Li Li Zhang ◽  
Chuan Chuan Ma
Keyword(s):  
Moisture Content ◽  
Physicochemical Properties ◽  
Bulk Density ◽  
Air Temperature ◽  
Flow Rate ◽  
Fruit Juice ◽  
Air Flow ◽  
Compressed Air ◽  
Operating Parameters ◽  
Air Flow Rate

This paper investigated the influence of operating parameters such as inlet air temperature, compressed air flow rate, concentration of carrier agent and type of carrier on the physicochemical properties of fruit juice powders produced by spray drying.The results indicated that increasing inlet air temperature resulted in the larger size particles with smoothly spherical appearance, and to lower bulk density and moisture content. The bulk density of powders also decreased with increasing carrier agent concentration, decreasing compressed air flow rate. The higher feed flow rate negatively affected process yield and positively influenced moisture content, and occurring the wall deposition easily. Additionally, the anthocyanin retention mainly depends on the inlet air temperature and type of carrier. Moreover, the novel methods and ideas to this problem in the next studies were presented.

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