Selecting drying chamber dimensions for a tower spray dryer

1966 ◽  
Vol 23 (6) ◽  
pp. 303-306
Author(s):  
V. L. Bil'dyukevich
Keyword(s):  
Spray Dryer ◽  
Drying Chamber ◽  
Tower Spray

scholarly journals A new spray dryer supported with freely rotatable propellers enables more efficient drying of milk samples

2021 ◽  
pp. 205-205
Author(s):  
Sinem Işik ◽  
Cengiz Yildiz
Keyword(s):  
Thermal Efficiency ◽  
Flow Direction ◽  
Air Flow ◽  
Product Yield ◽  
Spray Dryer ◽  
Product Yields ◽  
Milk Samples ◽  
Powder Particles ◽  
New Type ◽  
Drying Chamber

A new type of spray dryer was developed for drying milk and the like efficiently. To this end, freely rotatable propellers powered with air-flow were placed in the drying chamber to increase thermal efficiency and the product yield in the newly developed spray dryer (DSD). Milk samples were dried in both the developed system and a standard spray dryer (SSD) to compare thermal efficiencies and product yields of each. It was observed that the propellers placed in the drying chamber of the developed spray dryer (DSD) had caused a change in the flow direction of the drying air, decreased the temperature of the drying walls, and increased the thermal efficiency and product yield in drying. Consequently, in the developed dryer, the adhesion of the powder particles to the drying wall and to each other is significantly reduced, resulting in a more efficient drying.

Simulation and Design Optimization of a Tall-Form Spray Dryer

2017 ◽  
Author(s):  
Joanna Tess Masilungan-Manuel ◽  
Allan N. Soriano ◽  
Mark Christian E. Manuel ◽  
Po Ting Lin
Keyword(s):  
Moisture Content ◽  
Water Activity ◽  
Computational Simulation ◽  
Vital Role ◽  
Quality Parameter ◽  
Spray Dryer ◽  
Ansys Fluent ◽  
Discrete Phase Modeling ◽  
Discrete Phase ◽  
Drying Chamber

Airflow stability plays a vital role in optimizing the spray dryer operation; wherein the airflow patterns present inside the drying chamber are considered as the primary factors that influences the histories of the product particle. In this paper, the optimum drying parameters that would produce a higher yield of powdered egg while retaining its quality parameter such as moisture content and water activity were determined by means of Euler-Lagrange Discrete Phase Modeling (DPM) numerical method present in the ANSYS-Fluent ver. 14.5 CFD solver. During the computational simulation, the flow pattern of the air was first identified using the Eulerian method then the results were coupled using the Lagrangian-Discrete Phase Modeling to track the particle histories of the disperse phase inside the tall-form spray drying chamber. Results showed that the optimum inlet air velocity and temperature are 8.87 m/s and 444 K respectively. At these conditions, the particle trajectories simulated exhibited that the calculated final moisture content and water activity for the dried egg powder are 1.09 % and 0.012, respectively.

scholarly journals Spray drying of the buriti pulp at different maltodextrin concentrations and temperature

2018 ◽  
Vol 40 ◽  
pp. 72
Author(s):  
Wolia Costa Gomes ◽  
Rossana Maria Feitosa Figueirêdo ◽  
Alexandre José de Melo Queiroz ◽  
Alyson da Luz Pereira Rodrigues ◽  
Glauber Cruz ◽  
...  
Keyword(s):  
Empirical Model ◽  
Chemical Characteristics ◽  
Total Acidity ◽  
Spray Dryer ◽  
Drying Process ◽  
First Order ◽  
Experimental Planning ◽  
Physical Chemical ◽  
Powder Samples ◽  
Drying Chamber

In this work, the formulations prepared with buriti pulp and different maltodextrin concentrations (5, 10 and 15%) were dried in spray dryer and the chemical, physical and physical-chemical characteristics of the formulations and powder samples were evaluated. In this drying process two kinds of powder samples were collected: one into drying chamber and another in the cyclone. Using a factorial experimental planning, the experiments were conducted, in order to assess the moisture and ash contents, total acidity and density of both samples. The formulations dried in the spray dryer presented be feasible for the production of buriti pulp powder; however, powder samples collected into drying chamber and cyclone were different. Among the parameters analysed, it was found that only for density the samples collected into drying chamber, that the first-order empirical model obtained was statistically significant and predictive.

ESTUDO DE VIABILIDADE PARA PRODUÇÃO DA FARINHA DE BANANA VERDE EM SPRAY DRYER

2012 ◽  
Vol 14 (4) ◽  
pp. 317-322
Author(s):  
R.K. Oi ◽  
D. Moraes Júnior ◽  
E.B. Tambourgi
Keyword(s):  
Spray Dryer

USE OF WATER DEPOSITION TO STUDY THE MAIN FACTORS IN WALL COLLISIONS OF DROPLETS IN A PHARMACEUTICAL-SCALE SPRAY DRYER

2008 ◽  
Vol 18 (6) ◽  
pp. 523-551 ◽  
Author(s):  
T. Lamy ◽  
N. Collins ◽  
T. A. G. Langrish
Keyword(s):  
Spray Dryer ◽  
Main Factors

COMPUTER MODELING OF THE STRUCTURE OF FOREST DRYING CHAMBERS, REDUCING HEAT LOSS

2020 ◽  
Vol 2020 (4) ◽  
pp. 60-67
Author(s):  
Boris Pruss ◽  
Viktor Romanov ◽  
Yaroslav Prozorov ◽  
Olga Pleskacheva
Keyword(s):  
Computer Modeling ◽  
Heat Loss ◽  
Heat Losses ◽  
Heat Energy ◽  
Insulating Materials ◽  
Sawn Timber ◽  
Drying Chamber

The paper presents the theory of calculating heat loss through the fences of timber drying chambers. The software for computer modeling of the process of transferring heat energy through the fences of the drying chamber, consisting of various heat-insulating materials, for calculating heat losses during drying of sawn timber is described. The efficiency of the use of modern heat-insulating materials to reduce heat losses during drying of sawn timber has been experimentally confirmed.

scholarly journals Effects of particle formation behavior on the properties of fish oil microcapsules fabricated using a micro-fluidic jet spray dryer

2020 ◽  
Vol 17 (1) ◽  
pp. 27-36
Author(s):  
Xingxing Xiong ◽  
Shengyu Zhang ◽  
Nan Fu ◽  
Hong Lei ◽  
Winston Duo Wu ◽  
...  
Keyword(s):  
Fish Oil ◽  
Oxidative Stability ◽  
Particle Formation ◽  
Core Material ◽  
Wall Material ◽  
Spray Dryer ◽  
Drying Temperature ◽  
Total Solids ◽  
Formation Behavior ◽  
Solids Content

Abstract Fish oil was encapsulated with whey protein isolate (WPI) as wall material using a Micro-Fluidic Jet Spray Dryer. The effects of core/wall material ratio, drying temperature and total solids content on the properties of microcapsules were studied. Low core/wall material ratios at 1:5 and 1:3 resulted in high encapsulation efficiency (EE) and excellent oxidative stability of microparticles during storage. Reducing the inlet temperature from 160 to 110 °C remarkably decreased EE from around 99 to 64.8%, associated with substantial increases in peroxide value during storage. The total solids content mainly altered the morphology of microcapsules, showing little influence on EE and oxidative stability. We proposed that the different drying conditions impacted on particle formation behavior during spray drying, which could be a crucial factor responsible for the differences in the quality attributes of microparticles. A low core/wall material ratio and high drying temperature facilitated the formation of a rigid protein skin at droplet surface during drying, whereas a high solids fraction in the droplets could limit possible droplet shrinkage. These factors contributed positively to the encapsulation of the lipophilic core material.

scholarly journals Bioactivity of microencapsulated soursop seeds extract on Plutella xylostella

2016 ◽  
Vol 46 (5) ◽  
pp. 771-775 ◽  
Author(s):  
Ismael Barros Gomes ◽  
Roseane Cristina Predes Trindade ◽  
Antônio Euzébio Goulart Sant'Ana ◽  
Eurico Eduardo Pinto de Lemos ◽  
Irinaldo Diniz Basílio Júnior
Keyword(s):  
Acute Toxicity ◽  
Plutella Xylostella ◽  
Larval Stage ◽  
Diamondback Moth ◽  
Ethanolic Extract ◽  
Spray Dryer ◽  
Annona Muricata ◽  
Ultrapure Water ◽  
Arabic Gum ◽  
Chronic Effects

ABSTRACT: The aim of this study was to evaluate the bioactivity of microencapsulated extract from the soursop seeds, Annona muricata L. ( Annonaceae ), on diamondback moth, Plutella xylostela L. (Lepidoptera: Plutellidae ). Microencapsulation was performed in a Mini Spray Dryer model B-290 using 50mL of ethanolic and hexanic extracts plus 150mL of ethanol and 150mL of ultrapure water, mixed with aerosil (first polymer) or arabic gum (second polymer). It was possible to microencapsulate the ethanolic extract of soursop seeds only by using the polymer arabic gum at 20%. The microencapsulated extract caused significant acute toxicity (LC50=258mg L-1) and chronic effects, especially reduction of larval viability and increased larval stage. We concluded that the microencapsulation of the ethanolic extract of soursop seeds can be a viable alternative for controlling diamondback moth with possible gains for the environment.

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