Two-Stage Gas-Liquid Separator with Conical Spiral Fields
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Solution Overview
Problem
Current gas-liquid separators in the oil and gas exploitation field face inefficiencies in degassing, particularly with the tubular column type separators, where liquid flow issues lead to reduced degassing efficiency and increased structural stress, limiting their capacity and maintenance costs.
Innovation Solution
A two-stage gas-liquid separation device with conical spiral fields, incorporating a first-stage uniform mixer, second-stage uniform mixer, whirlpool-making gas collector, and conical degasser, along with a control system for remote automatic control, to efficiently separate gas and liquid phases with varying gas contents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the gas-liquid treatment amount is increased to improve productivity, then the degassing efficiency is improved, but liquid flow overflows from the upper pipe cavity causing unsafe operating conditions
Solution Approach 1:
The separator is divided into multiple functional sections: a lower separation section with a conical bottom for gravity settling, and an upper high-speed rotation section for centrifugal separation. This segmentation allows different separation mechanisms to operate in different zones, enabling higher treatment capacity while maintaining reliable separation performance without liquid overflow.
Solution Approach 2:
The patent introduces a dynamic high-speed rotation mechanism in the upper section that creates a controlled vortex flow. This dynamic element allows the separator to adapt to varying gas-liquid treatment amounts by adjusting the rotation speed, maintaining safe operating conditions across different productivity levels through active flow control.
2Productivity
If a liquid flow film leading-out part is added to prevent liquid overflow, then the degassing efficiency is improved, but structural stress increases and maintenance cost increases
Solution Approach 1:
Instead of adding complex leading-out structures to the upper pipe body, the patent inverts the approach by designing a conical bottom section that naturally guides liquid flow downward through gravity. The liquid flow film is formed on the conical surface and directed to the bottom outlet, eliminating the need for additional leading-out parts and reducing structural stress while maintaining degassing efficiency.
3Weight of stationary object
If a tubular column type separator is used to achieve compact size and high integration, then the device weight is reduced, but liquid flow is brought out of the upper pipe cavity
Solution Approach 1:
The patent employs a conical bottom section instead of a cylindrical bottom, creating a curved surface that naturally guides liquid flow downward. This curvature design prevents liquid from being brought out of the upper pipe cavity by utilizing the conical geometry to direct flow along the wall to the bottom outlet, eliminating the harmful overflow effect while maintaining the compact tubular structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device achieves efficient and rapid separation of gas and liquid phases, automatically regulating flow rates and pressures, enhancing degassing efficiency while reducing structural stress and maintenance costs.
Implementation Method 1
conical spiral fields dynamic gas-liquid separation process
Implementation Method 2
two-stage gas-liquid crushing and uniform mixing process
Data Source
AI summary
A separation device with two-stage gas-liquid mixture and conical spiral fields is provided. A first-stage uniform mixer performs first-stage gas-liquid crushing and uniform mixing process by an outer micropore ceramic pipe, a middle micropore ceramic pipe and an inner micropore ceramic pipe and crushes large bubbles in the gas-liquid two-phase flow into small bubbles. A second-stage uniform mixer performs second-stage gas-liquid crushing and uniform mixing process. A whirlpool-making gas collector adjusts the gas-liquid uniform mixing flow obtained after two-stage gas-liquid uniform mixing into hollow-core type high-speed two-phase spiral flow. A conical degasser performs gas-liquid efficient separation operation in a high-speed conical spiral field. A two-stage uniform mixing control system and a gas-liquid separation control system automatically regulate and control the flow and the flow pressure of the gas-liquid two-phase flow, the gas-liquid uniform mixing flow and degassed gas flow and degassed liquid flow.