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

作　　者：文潇 王建强 杨孟子 王宗龙[1,2] WEN Xiao;WANG Jianqiang;YANG Mengzi;WANG Zonglong(Marine Design and Research Institute of China,Shanghai 200011,China;Science and Technology on Waterjet Propulsion Laboratory,Shanghai 200011,China)

机构地区：[1]中国船舶及海洋工程设计研究院,上海200011 [2]喷水推进技术重点实验室,上海200011

出　　处：《中国造船》2024年第2期125-138,共14页Shipbuilding of China

基　　金：国防科技重点实验室稳定支持科研计划项目(K90015-6)。

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5500 m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。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 5500 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 

分 类 号：TD432[矿业工程—矿山机电]