Open AccessHeat transfer characteristics of activated coke in the moving bed for sulphur resource recovery
Author(s) -
Gongpeng Wu,
Tang Rong-sheng,
Yiyu Wang,
Yan He
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/450/1/012086
Subject(s) - heat transfer coefficient , heat transfer , tube (container) , concentric tube heat exchanger , materials science , mechanics , heat exchanger , plate heat exchanger , coke , air velocity , thermodynamics , dynamic scraped surface heat exchanger , shell and tube heat exchanger , airflow , critical heat flux , composite material , metallurgy , physics
A counter-flow moving bed and tube heat exchanger was designed and built for the heat transfer process of activated coke desorption, the heat transfer law between particles and tube wall surface in the moving bed was studied. The results show that with the increase of hot air inlet temperature and moving velocity of activated coke particles, the heat transfer coefficient inside the tube largely increases and then remains a small change. As the air velocity increases, the heat transfer coefficient inside the tube also shows increasing trend. In addition, with the increase of air temperature and particles moving velocity, total heat transfer coefficient of the moving bed and heat transfer coefficient outside tube increase first and then decrease. Finally, based on experimental data, the correlation coefficient of heat transfer coefficient outside the tube is obtained.