Spray Drying of Serratia marcescens in the Jet Spray Dryer

1977 ◽  
Vol 16 (1) ◽  
pp. 12-18 ◽  
Author(s):  
E. W. Comings ◽  
Harry Higa ◽  
J. E. Myers ◽  
Henry Koffler ◽  
H. A. McLain
Keyword(s):  
Serratia Marcescens ◽  
Spray Drying ◽  
Spray Dryer

Spray Drying Performance of a Laboratory Spray Dryer for Tomato Powder Preparation

2003 ◽  
Vol 21 (7) ◽  
pp. 1273-1289 ◽  
Author(s):  
Athanasia M. Goula ◽  
Konstantinos G. Adamopoulos
Keyword(s):  
Spray Drying ◽  
Spray Dryer ◽  
Powder Preparation ◽  
Tomato Powder

scholarly journals Effect of Spray Dryer Scale Size on the Properties of Dried Beetroot Juice

Molecules ◽  
2021 ◽  
Vol 26 (21) ◽  
pp. 6700
Author(s):  
Jolanta Gawałek
Keyword(s):  
Spray Drying ◽  
Industrial Process ◽  
Laboratory Scale ◽  
Industrial Scale ◽  
Process Conditions ◽  
Spray Dryer ◽  
Beetroot Juice ◽  
Centrifugal Atomization ◽  
Drying Conditions ◽  
Drying Efficiency

Experiments detailing the spray drying of fruit and vegetable juices are necessary at the experimental scale in order to determine the optimum drying conditions and to select the most appropriate carriers and solution formulations for drying on the industrial scale. In this study, the spray-drying process of beetroot juice concentrate on a maltodextrin carrier was analyzed at different dryer scales: mini-laboratory (ML), semi-technical (ST), small industrial (SI), and large industrial (LI). Selected physicochemical properties of the beetroot powders that were obtained (size and microstructure of the powder particles, loose and tapped bulk density, powder flowability, moisture, water activity, violet betalain, and polyphenol content) and their drying efficiencies were determined. Spray drying with the same process parameters but at a larger scale makes it possible to obtain beetroot powders with a larger particle size, better flowability, a color that is more shifted towards red and blue, and a higher retention of violet betalain pigments and polyphenols. As the size of the spray dryer increases, the efficiency of the process expressed in powder yield also increases. To obtain a drying efficiency >90% on an industrial scale, process conditions should be selected to obtain an efficiency of a min. of 50% at the laboratory scale or 80% at the semi-technical scale. Designing the industrial process for spray dryers with a centrifugal atomization system is definitely more effective at the semi-technical scale with the same atomization system than it is at laboratory scale with a two-fluid nozzle.

Optimization of the Spray Drying Operating Conditions for Producing the Powder Mixture of Gum Arabic and Maltodextrin

2017 ◽  
Vol 13 (8) ◽  
Author(s):  
Duc Quang Nguyen ◽  
Sabah Mounir ◽  
Karim Allaf
Keyword(s):  
Spray Drying ◽  
Air Temperature ◽  
Powder Mixture ◽  
Gum Arabic ◽  
Feed Solution ◽  
Operating Conditions ◽  
Operating Parameters ◽  
Spray Dryer ◽  
Optimal Parameters ◽  
The Impact

AbstractThe powder mixture of gum arabic and maltodextrin was produced by spray drying. The inlet air temperature of spray dryer was varied from 160 °C to 260 °C and the maltodextrin content was varied from 0 to 50 % in the feed solution with the concentration of 42.5 % (w/v) total solids by weight. The properties of the finished product were characterized to examine the impact of changes in these operating parameters. The results showed that: the inlet air temperature had a stronger influence on the properties of finished product than the MD/GA ratio, whereas the feed rate was more clearly affected by the MD/GA ratio. Two optimal parameters obtained include MD/GA ratio equal to 0.615 and the inlet air temperature of spray dryer Te = 258 °C.

A Scaling-up Approach from Experimental Tunnel to Spray Dryer

2010 ◽  
Vol 6 (1) ◽  
Author(s):  
Xuan-You Li ◽  
Ireneusz Zbicinski ◽  
Jing Wu
Keyword(s):  
Spray Drying ◽  
Scale Up ◽  
Scaling Up ◽  
Pilot Scale ◽  
Drying Kinetics ◽  
Water Evaporation ◽  
Small Scale ◽  
Spray Dryer ◽  
Cfd Modelling ◽  
Initial Water

A scaling-up approach from drying of a thin layer wet material in a experimental tunnel to a pilot scale spray drying was developed through determining drying kinetics of quick evaporation process. Maltodextin was selected as solid material in solution to be dried. Critical moisture contents as a function of initial water evaporation rate (drying rate) shows that there is the same variation between the small scale test tunnel and the pilot scale spray dryer. Result of CFD modelling demonstrates that drying kinetics obtained from the small-scale tunnel could be properly applied to scale-up the spray drying process.

scholarly journals Conventional and Advanced Exergy and Exergoeconomic Analysis of a Spray Drying System: A Case Study of an Instant Coffee Factory in Ecuador

Energies ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 5622
Author(s):  
Diana L. Tinoco-Caicedo ◽  
Alexis Lozano-Medina ◽  
Ana M. Blanco-Marigorta
Keyword(s):  
Spray Drying ◽  
Industrial Scale ◽  
Spray Dryer ◽  
Exergy Destruction ◽  
Steam Generation ◽  
Instant Coffee ◽  
Cost Rate ◽  
Drying System ◽  
Drying Section ◽  
Exergoeconomic Analysis

Instant coffee is produced worldwide by spray drying coffee extract on an industrial scale. This production process is energy intensive, 70% of the operational costs are due to energy requirements. This study aims to identify the potential for energy and cost improvements by performing a conventional and advanced exergy and exergoeconomic analysis to an industrial-scale spray drying process for the production of instant coffee, using actual operational data. The study analyzed the steam generation unit, the air and coffee extract preheater, the drying section, and the final post treatment process. The performance parameters such as exergetic efficiency, exergoeconomic factor, and avoidable investment cost rate for each individual component were determined. The overall energy and exergy efficiencies of the spray drying system are 67.6% and 30.6%, respectively. The highest rate of exergy destruction is located in the boiler, which amounts to 543 kW. However, the advanced exergoeconomic analysis shows that the highest exergy destruction cost rates are located in the spray dryer and the air heat exchanger (106.9 $/h and 60.5 $/h, respectively), of which 47.7% and 3.8%, respectively, are avoidable. Accordingly, any process improvement should focus on the exergoeconomic optimization of the spray dryer.

scholarly journals Methods for Improvement of the Thermal Efficiency during Spray Drying

2018 ◽  
Vol 53 ◽  
pp. 01031 ◽  
Author(s):  
Fangyuan Cheng ◽  
Xueyong Zhou ◽  
Yanmei Liu
Keyword(s):  
Spray Drying ◽  
Thermal Efficiency ◽  
High Energy ◽  
Point Of View ◽  
Low Energy ◽  
Energy Utilization ◽  
Spray Dryer ◽  
Unit Operation ◽  
Factors Affecting ◽  
High Energy Consumption

Spray drying is a kind of unit operation with high energy consumption and relatively low energy utilization, and the problem of low thermal efficiency has been attracted the attention by scholars at home and abroad. The factors affecting the thermal efficiency of spray dryer are analyzed. From a technical point of view, the thermal efficiency of spray dryer can be increased through the unit operation. Measurements for the reduction of energy saving of spray dryer were put forward.

scholarly journals Particle Engineering of Chitosan and Kaolin Composite as a Novel Tablet Excipient by Nanoparticles Formation and Co-Processing

Pharmaceutics ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1844
Author(s):  
Chonwipa Yarangsee ◽  
Phanphen Wattanaarsakit ◽  
Jakkapan Sirithunyalug ◽  
Phuriwat Leesawat
Keyword(s):  
Physical Properties ◽  
Spray Drying ◽  
Chitosan Nanoparticles ◽  
Direct Compression ◽  
Spray Dryer ◽  
Particle Engineering ◽  
Successful Development ◽  
Feed Formulation ◽  
The Individual ◽  
Tablet Hardness

Chitosan is not a common excipient for direct compression due to poor flowability and inadequate compressibility. Co-processing of chitosan and kaolin is a challenging method to overcome the limitations of the individual excipients. The purpose of the present study was to develop co-processed chitosan–kaolin by the spray drying technique (rotary atomizer spray dryer) and to characterize the excipient properties. The formation of chitosan nanoparticles was the major factor for desirable tablet hardness. The ratio of chitosan/tripolyphosphate of 10:1 and 20:1 had a significant effect on hardness. The successful development of co-processed chitosan–kaolin as a novel tablet excipient was obtained from a feed formulation composed of chitosan and kaolin at a ratio of 55:45 and the optimum chitosan/tripolyphosphate ratio of 20:1. Co-processing altered the physical properties of co-processed chitosan–kaolin in such a way that it enhanced the flowability and tableting performance compared to the physical mixture.

scholarly journals NANOENKAPSULASI EKSTRAK KULIT MELINJO MERAH (GNETUM GNEMON L.) PADA BERBAGAI SUHU INLET DAN LAJU ALIR SPRAY DRYER

2021 ◽  
Vol 22 (3) ◽  
pp. 211-220
Author(s):  
Bambang Kunarto ◽  
Iswoyo Iswoyo
Keyword(s):  
Spray Drying ◽  
Reducing Power ◽  
Spray Dryer ◽  
Gnetum Gnemon

Kulit melinjo merah berpotensi sebagai sumber antioksidan. Enkapsulasi perlu dilakukan untuk melindungi ekstrak kulit melinjo merah yang kurang stabil. Tujuan penelitian ini adalah nanoenkapsulasi ekstrak etanolik kulit melinjo merah menggunakan enkapsulan β-siklodekstrin melalui tahap nanomulsifikasi dengan berbagai konsentrasi surfaktan poloksamer (0,5; 1, dan 1,5%). Selanjutnya dilakukan spray drying pada berbagai suhu inlet (120; 130, dan 140 °C) dan laju alir bahan (4, 5, dan 6 ml/menit). Hasil penelitian menunjukkan bahwa nanoemulsi dengan ukuran 99,32 ± 0,32nm, indeks polidispersitas 0,29 ± 0,04, viskositas 2,97 ± 0,53 cp, turbiditas 197,56 ± 0,20NTU dan potensial zeta -34,25 ± 0,04 mV diperoleh dengan penambahan poloksamer 1%. Spray drying pada suhu inlet 130 °C dan laju alir 5 ml/menit mampu menghasikan nanokapsul ekstrak etanolik kulit melinjo merah dengan yield 31,98 ± 0,11%, efisiensi enkapsulasi 83,28 ± 0,16% dan aktivitas antioksidan (RSA-DPPH 69,94 ± 0,07% dan reducing power 77,57 ± 0,43%)

scholarly journals CFD study of air flow patterns and droplet trajectories in a lab scale vortex chamber spray dryer

2018 ◽  
Author(s):  
Umair Jamil Ur Rahman ◽  
Ilias Baiazitov ◽  
Artur Pozarlik ◽  
Gerrit Brem
Keyword(s):  
Spray Drying ◽  
Vortex Chamber ◽  
Temperature Fields ◽  
Average Error ◽  
Drying Rate ◽  
Spray Dryer ◽  
Water Spray ◽  
Drying Technology ◽  
Novel Design ◽  
Good Agreement

In order to develop an alternative spray drying technology, a high drying rate in a smaller volume must be achieved. In this paper, results of CFD study are presented, carried out to investigate the possibility of spray drying in a novel design vortex chamber. The model is validated against experimental data, that makes a good agreement with an average error of 7% with only air and 24% with water spray. Results of temperature fields and droplet impact positions are discussed. The computations demonstrate that vortex chamber spray dryer can be an attractive solution for drying technology. Keywords: CFD; spray drying; vortex chamber; atomization; 

scholarly journals Effect of Drying Temperature of Small Scale Spray Dryer on Physical Properties of Coffee Powder

2020 ◽  
Vol 28 (4) ◽  
Author(s):  
Joko Nugroho Wahyu Karyadi ◽  
Dwi Ayuni ◽  
Tsania Ayu Rohani ◽  
Devi Yuni Susanti
Keyword(s):  
Moisture Content ◽  
Physical Properties ◽  
Spray Drying ◽  
Product Yield ◽  
Feed Solution ◽  
Small Scale ◽  
Inlet Temperature ◽  
Spray Dryer ◽  
Drying Process ◽  
High Product Yield

Nowadays, coffee has become one of the most favorable commodities for beverages, flavoring as well as for cosmetic industries. In Indonesia, coffee becomes more popular, especially among youngsters. In this study, the spray drying process was evaluated, giving the potential of how simple spray dryer can help local farmers of Indonesia to produce their coffee powders. One small scale of spray dryer was constructed with the total dimensions of 2.85 x 0.64 for length x width, with a height of 2.32 m. The spray dryer was equipped with a digital thermo regulator, the pneumatic nozzle system, and 4 finned heaters with the power of 2700 watt for each. The spray drying constructed was revealed to be able to produce coffee powders with fine quality. The inlet temperature of the drying chamber, as well as the initial Brix content of feed solution, were proven to affect the physical properties of powder produced such as moisture content, product yield, and solubility. The final moisture content of powders was ranged from 3 - 7% db, with the high product yield of the drying process, which could reach up to 70%.

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