Design Factors in Fountain Confined Conical Spouted Beds

被引：12

作者：

Estiati, Idoia ^{[1
]}

Tellabide, Mikel ^{[1
]}

Pablos, Aitor ^{[1
]}

Altzibar, Haritz ^{[1
]}

Aguado, Roberto ^{[1
]}

Olazar, Martin ^{[1
]}

机构：

[1] Univ Basque Country, Dept Chem Engn, POB 644, E-48080 Bilbao, Spain

来源：

CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION | 2020年 / 155卷

基金：

欧盟地平线“2020”;

关键词：

conical spouted bed; fountain confiner; design factors; open-sided draft tube; nonporous draft tube; fine particle entrainment; DRAFT TUBE; CIRCULATION RATE; FLUID-DYNAMICS; FAST PYROLYSIS; CYCLE TIMES; HYDRODYNAMICS; ENTRAINMENT; PARAMETERS; ATTRITION; CATALYSTS;

D O I：

10.1016/j.cep.2020.108062

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The design factors of fountain confined conical spouted beds have been assessed in order to determine their best combination for scaling up and enhancing fine particle retention. The results evidence that the length of the confiner and the height of the draft tube entrainment zone are the key design factors, causing the highest entrainment reduction. Thus, the optimum confiner length is within the range of 2-3 times the bed surface diameter and the desirable height of the entrainment zone is approximately 1-2 times the tube diameter. This study also concludes that the best system for attaining high stability with minimum elutriation is the one equipped with an open-sided draft tube with an aperture ratio of around 20%.

引用

页数：8

共 38 条

[1]

Al-Jabari M, 1996, CHEM ENG COMMUN, V150, P465

[2] Particle Cycle Times and Solid Circulation Rates in Conical Spouted Beds with Draft Tubes of Different Configuration [J].