高校化学工程学报2016，Vol.30Issue(5)：1074-1081,8.DOI:10.3969/j.issn.1003-9015.2016.00.031
气力提升理论模型建立及验证
Modeling and Validation of an Airlift Lifting System
摘要
Abstract
Airlift technology has been widely applied in areas of deeper water intaking, petroleum drilling and dangerous medium conveying. Conventional characterization has been deeply investigated, but studies on theoretical models are insufficient. A frictional pressure drop model together with a numerical model of airlift based on momentum theorem were combined to study water conveying to optimize geometrical and operational parameters of the airlift system. Furthermore, a small airlift system was set up for the verification of the theoretical model. The calculated results indicate that water superficial velocity increases with the volumetric flux of the injected air to a maximum value and then slightly decreases. The maximum value moves left with the increase of submerged length. The relation between water superficial velocity and pipe diameter also shows a similar trend when the pipe diameter exceeds a critical limit, and the maximum value moves right with the increase of air flow rate. The water superficial velocity increases with submerged length when the length exceeds a critical value, at which the curvature increases with the increase of air flow rate. In addition, the airlift performance can be enhanced by moving the air inlet downwards. The experimental results show good agreement with the proposed model, which provides theoretical support for developing airlift systems.关键词
气力提升/动量定理/管径/浸入深度/进气口Key words
airlift/momentum theorem/pipe diameter/submerged length/air inlet分类
信息技术与安全科学引用本文复制引用
胡东,王晓川,唐川林,康勇..气力提升理论模型建立及验证[J].高校化学工程学报,2016,30(5):1074-1081,8.基金项目
国家自然科学基金项目(51374101)；国家重点基础研究发展计划(2014CB239203)；国家自然科学基金项目(51474158)。 （51374101）
