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Atomizer Nozzle

The Experts below are selected from a list of 45 Experts worldwide ranked by ideXlab platform

Yongjun Li – 1st expert on this subject based on the ideXlab platform

  • effect of structural parameters on atomization characteristics and dust reduction performance of internal mixing air assisted Atomizer Nozzle
    Process Safety and Environmental Protection, 2019
    Co-Authors: Pengfei Wang, Lianyang Zhang, Yongjun Li

    Abstract:

    Abstract As a air-liquid two-phase flow Nozzle, the internal-mixing air-assisted Atomizer Nozzle has been widely used in the field of spray technology for dust reduction. Structural parameters are important factors to influence the atomization characteristics and dust-reducing performance of the atomizing Nozzle. However, the mechanism of the influences of the structural parameters is not clear. In this study, the customized experimental spraying platform for dust control was used to study the atomization characteristics and dust reduction performance of the Nozzles under different structural parameters. Based on the experimental results, when the parameters such as water pressure and air pressure were constant, the dust reduction efficiency for both the total dust and the respiratory dust first increased then decreased with the increase of the diameter of the water-injection hole in the liquid cap and the number of air-injections holes. The dust reduction efficiency was optimal when the diameter of the water-injection hole in the liquid cap was 1.5 mm and the number of air-injections holes was 4. As the diameter of the air cap outlet increased, the dust reduction efficiency for both the total dust and the respiratory dust was improved; however, the improvement was limited. Based on the comprehensive consideration of the factors including the dust reduction efficiency of the Nozzle, the water flow rate, and the air flow rate, the diameter of the air cap outlet should be in the range of 2.0˜3.0 mm. When an internal mixing air atomizing Nozzle was used for dust reduction in industrial production sites, it is recommended have the diameter of the water-injection hole to be 1.5 mm, the number of air-injection holes to be 4, and the diameter of the air cap outlet to be 2.0˜3.0 mm. Under these recommended structural parameters, the dust reduction performance of the Nozzle is good while the water consumption and air consumption remain relatively low.

Sueli Rodrigues – 2nd expert on this subject based on the ideXlab platform

  • Dehydration of Prebiotic Fruit Drinks by Spray Drying: Operating Conditions and Powder Characterization
    Food and Bioprocess Technology, 2014
    Co-Authors: Claudia P. M. L. Fontes, Jonas L. A. Silva, Nair A. Sampaio-neta, José Maria C. Costa, Sueli Rodrigues

    Abstract:

    The aim of this work was to determine the best operating condition for spray drying prebiotic pineapple, melon, and orange drinks. Maltodextrin and Arabic gum were evaluated as drying adjuvant at two different drying temperatures (160 and 180 °C). The best operating condition was inlet air temperature of 180 °C, Atomizer Nozzle flow rate at 30 L/min, inlet air-drying flow rate at 3.5 m^3/min and feed flow rate at 0.3 L/h with 20 % (m/m) of maltodextrin. The powders presented low water activity ( a _w ≤ 0.200) and low moisture (0.267–0.733 %). The rehydration time ranged from 90 to 144 s, the powder hygroscopicity from 5.17 to 7.48 % in dry basis, and the degree of caking from 24 to 67 %. The instrumental color difference was below the threshold for the human eye perception for all drinks.

Pengfei Wang – 3rd expert on this subject based on the ideXlab platform

  • effect of structural parameters on atomization characteristics and dust reduction performance of internal mixing air assisted Atomizer Nozzle
    Process Safety and Environmental Protection, 2019
    Co-Authors: Pengfei Wang, Lianyang Zhang, Yongjun Li

    Abstract:

    Abstract As a air-liquid two-phase flow Nozzle, the internal-mixing air-assisted Atomizer Nozzle has been widely used in the field of spray technology for dust reduction. Structural parameters are important factors to influence the atomization characteristics and dust-reducing performance of the atomizing Nozzle. However, the mechanism of the influences of the structural parameters is not clear. In this study, the customized experimental spraying platform for dust control was used to study the atomization characteristics and dust reduction performance of the Nozzles under different structural parameters. Based on the experimental results, when the parameters such as water pressure and air pressure were constant, the dust reduction efficiency for both the total dust and the respiratory dust first increased then decreased with the increase of the diameter of the water-injection hole in the liquid cap and the number of air-injections holes. The dust reduction efficiency was optimal when the diameter of the water-injection hole in the liquid cap was 1.5 mm and the number of air-injections holes was 4. As the diameter of the air cap outlet increased, the dust reduction efficiency for both the total dust and the respiratory dust was improved; however, the improvement was limited. Based on the comprehensive consideration of the factors including the dust reduction efficiency of the Nozzle, the water flow rate, and the air flow rate, the diameter of the air cap outlet should be in the range of 2.0˜3.0 mm. When an internal mixing air atomizing Nozzle was used for dust reduction in industrial production sites, it is recommended have the diameter of the water-injection hole to be 1.5 mm, the number of air-injection holes to be 4, and the diameter of the air cap outlet to be 2.0˜3.0 mm. Under these recommended structural parameters, the dust reduction performance of the Nozzle is good while the water consumption and air consumption remain relatively low.