Experimental and numerical investigation of specific energy consumption of the two-stage pneumatic-fluidized bed drying of suspension-grade polyvinyl chloride

Dorfeshan, Masoud; Mehrzad, Salem; Hajidavalloo, Ebrahim

doi:10.1080/07373937.2020.1812632

Cited by 3 publications

(2 citation statements)

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“…However, pneumatic dryers are more suitable for low-degree dehydration, and deep drying requires a longer residence time, resulting in a long pipeline. To reduce energy consumption, multistage drying systems can be utilized in conjunction with other drying devices …”

Section: Introductionmentioning

confidence: 99%

“…To reduce energy consumption, multistage drying systems can be utilized in conjunction with other drying devices. 11 A spouted bed is a device with stable gas−solid circulation flow pattern, and its applications include mixing, 12 heating/ cooling, 13 drying, 14,15 coating, 16 and chemical reactions, 17 and the related industries are the chemical and electrochemical, metallurgy, food and agricultural, pharmaceutical, as well as energy and nuclear sectors. Gishler 18 applied spouted bed technology in drying process industry for the first time and reported significantly improved efficiency.…”

Section: Introductionmentioning

confidence: 99%

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Experimental and Numerical Study of Cross-Domain Hydrodynamics in an Integrated Pneumatic-Spouted Bed

Jiao

Wang

Mei

et al. 2023

Ind. Eng. Chem. Res.

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As an essential resource, the drying, upgrading, and efficient utilization of lignite are of great significance to the development of the low-carbon economy. In this work, a novel drying system, combining a pneumatic and spouted bed, is designed to achieve lignite deeply dewatering. The system is investigated experimentally and numerical simulated to characterize the hydrodynamics of particles moving across the domain, such as pressure drop, fountain height, and pressure fluctuation. The results show that there is a critical gas velocity that changes the flow pattern of the bed when the static bed is higher than 50 mm. When the gas velocity increases to the critical value, the spouting state becomes unstable and the corresponding pressure drop will undergo a secondary mutation. This work provides a deeper understanding of the flow structure and particle motion in the novel drying system under various industrial operating conditions.

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Section: Introductionmentioning

confidence: 99%