Mine raising vertical pipe gas lift system based on phase change principle

By adopting the Yangmin rising pipe gas lifting system based on the phase change principle in deep-sea mining technology, the phase change of the liquid phase change medium is used to generate energy, which solves the problem of the relay pump structure and the problem of low solid carrying capacity of the gas lifting system, and achieves efficient liquid transportation and solid particle carrying, improving mining efficiency.

CN119712116APending Publication Date: 2025-03-28KARAMAY BAIJIANTAN DISTRICT (KARAMAY HIGH TECH ZONE) PETROLEUM ENG FIELD (PILOT) LAB
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Patent Information

Application Number
CN202411940676.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-26
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

In the existing deep-sea mining technology, the complex structure of the relay pump leads to excessive axial load and is prone to damage; at the same time, the transportation of solid-liquid mixture leads to erosion of the relay pump blades, which has a short service life; the gas lifting ore method has limited fluid velocity, low solid-carrying capacity, and low mining efficiency.

Method used

The ore-supporting riser gas lifting system based on the phase change principle is adopted, and the phase change of liquid phase change medium in the phase change chamber is used to generate energy, and the gaseous phase change medium is sprayed at a faster and stable speed through the nozzle to provide lifting power.

Benefits of technology

The structural damage and life problems caused by relay pumps are solved, the efficiency of liquid transporting solid particles is improved, and the mining efficiency of Yangmin standpipe is improved.

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Abstract

The invention discloses an ore raising vertical pipe gas lift system based on the phase change principle. The system comprises an ore raising vertical pipe composed of an inner pipe and an outer pipe, a phase change cabin, a nozzle and a liquid phase change medium conveying pipeline located in an annular space between the inner pipe and the outer pipe. The multiple phase change cabins are annularly arranged along the inner pipe to form phase change rings, and the phase change rings are distributed in an axial linear array mode of the ore raising vertical pipe. The inlet end of each phase change cabin is communicated with a liquid phase change medium conveying pipeline through a first one-way valve, and the outlet end of each phase change cabin is provided with at least one nozzle and is communicated with the nozzles through a second one-way valve; and a heating device is also arranged on the phase change cabin. According to the method, energy generated by continuous phase change of the liquid phase change medium is utilized to endow the fluid-solid mixture in the ore raising vertical pipe with a high speed, the transportation efficiency of solid particles of the ore raising system is improved, and then the mining efficiency of the ore raising vertical pipe is improved. The problem that in the prior art, a relay pump possibly causes damage to a vertical pipe structure and the service life problem caused by erosion of a relay pump blade is solved.
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