Open AccessDrying Experiment and Drying Model Analysis of Dehydrated Sludge Particles
Author(s) -
Gaiju Zhao,
Fengjiao Yin,
Xi Liang,
Dongling Yuan,
Wenguang Geng,
Luyuan Wang,
Rongyue Sun
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/768/2/022031
Subject(s) - diffusion , research object , particle size , process (computing) , particle (ecology) , chemistry , freeze drying , pulp and paper industry , materials science , chemical engineering , chromatography , thermodynamics , engineering , physics , oceanography , regional science , geology , computer science , geography , operating system
A sludge drying experiment was conducted with dehydrated sludge particles as the research object, and the effects of temperature and particle size on sludge drying characteristics were discussed. The results show that the average drying rate of sludge can be increased by increasing the drying temperature and decreasing particle size of sludge, that is, the drying process of dehydrated sludge particles is controlled by internal migration. According to Fick’s second law, the simplified diffusion model of sludge drying is obtained by regression of experimental data, the simulation results obtained by the simplified diffusion model are in good agreement with the experimental results, which can well reflect the drying process of sludge particles and provide technical basis for the control of dehydrated sludge particles drying process.