%0 Journal Article
%T Energy Dissipation Distribution in a Draft Tube-lifted Gas-Solid Air Loop Reactor<br>中心气升式气固环流反应器中的能耗分布
%A SHEN Zhi-yuan
%A YANG Li-jun
%A LIU Meng-xi
%A LU Chun-xi
%A <br>沈志远
%A 杨利军
%A 刘梦溪
%A 卢春喜
%J 过程工程学报
%D 2012
%I 
%X Based on the energy balance,an energy dissipation rate model of different regions of a draft tube-lifted gas-solid air loop reactor(GSALR) was established.The local particle velocity,bed density and pressure drop were measured in a cold model GSALR and the model parameters were obtained based on the experimental data.The predictions agree with experimental data.The predicted results show that nearly 40% and 30% of the energy dissipation rate occur in the annulus and gas-solid separation regions,while that in the draft tube and gas distributors region is relatively small,reaching a sum of nearly 30%.With increasing of the draft tube gas velocity,the ratio of individual region to global reactor energy dissipation rate decreases for the annulus region,increases for the gas-solid separation region,and basically remains constant for the draft tube and gas distributor affecting regions.Compared with that obtained in an annulus-lifted GSALR,the location of gas distributor has a significant influence on energy dissipation,the flow resistance is smaller in the draft tube-lifted GSALR.
%K gas-solid air loop reactor
%K energy balance
%K energy dissipation
%K energy dissipation distribution rate<br>气固环流反应器
%K 能量平衡
%K 能量消耗
%K 能耗分布比率
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=3FCF8B1A330466D5&jid=B9EE12934D19905403D996AE65CEEEED&aid=ACE46FDFF1576C24703ED8B23E1A76D7&yid=99E9153A83D4CB11&vid=59906B3B2830C2C5&iid=38B194292C032A66&sid=9EF602EA28138BEA&eid=315A3D008C6ECFC8&journal_id=1009-606X&journal_name=过程工程学报&referenced_num=0&reference_num=0