深海采矿气力提升系统建模及关键参数分析
Modeling of Airlift Pumping System for Deep-Sea Mining and Key Parameters Analysis
文潇 1王建强 1杨孟子 2王宗龙1
作者信息
- 1. 中国船舶及海洋工程设计研究院,上海 200011;喷水推进技术重点实验室,上海 200011
- 2. 中国船舶及海洋工程设计研究院,上海 200011
- 折叠
摘要
为精确预报深海采矿气力提升系统的运行性能,确定关键参数,基于动量定理并综合考虑气体体积膨胀、截面含气率变化和矿物颗粒沉降的影响,建立了气力提升管道内部三相流理论模型;通过数值计算,揭示了注气量、排液量和排固量之间的相互关系,并与文献试验数据对比,验证了模型的准确性;采用该理论模型,开展面向5 500m水深条件下气力提升系统的性能预报,同时深入分析管径、注气深度和矿物颗粒粒径等关键参数的影响规律.研究成果可为深海采矿气力提升方案设计提供参考.
Abstract
In order to predict the performance of the airlift pumping system for deep-sea mining accurately,and determine key parameters,a three-phase flow theoretical model inside the lifting pipeline is established based on the momentum theorem.In this model,the gas expansion,change of gas volumetric fraction,and mineral particle settlement are comprehensively considered.Through numerical calculation,the relationship between gas injection volume,liquid discharge volume and solid discharge volume is revealed,and the model is verified by comparison with experimental data in literature.Using this theoretical model,the performance prediction of the 5 500 m airlift pumping system is carried out and the key parameters including pipe diameter,injection depth and mineral particle size are analyzed.The results can provide an important guidance for the design of deep-sea mining airlift pumping system.
关键词
深海采矿/理论模型/气力提升/三相流/关键参数Key words
deep-sea mining/theoretical model/airlift pumping/three-phase flow/key parameter引用本文复制引用
基金项目
国防科技重点实验室稳定支持科研计划(K90015-6)
出版年
2024
NETL
NSTL
万方数据