Helical Separator for Viscous Impingement Particle Collection
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Solution Overview
Problem
Existing systems for removing particulate and liquids from flowing gas streams are inefficient, costly, and pose environmental hazards, particularly in high liquid-to-gas weight ratios and varying gas flow rates.
Innovation Solution
A vertically oriented helical separator system with a duplex-filtered side stream and waste liquid recovery tank, where liquids are injected to encapsulate particulate, and a helical separator with radially diverging fins and a conical cavity generates high swirl forces for efficient separation, with a simpler and less expensive manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional filter separators are used to remove particulate and liquid from gas streams, then separation is achieved, but the system requires frequent manual maintenance and generates hazardous waste
Solution Approach 1:
The system employs automatic drain valves and level sensors that enable the separator to self-drain and self-monitor without manual intervention. The control system automatically activates pumps and valves based on liquid level detection, transforming a manual maintenance system into an autonomous self-service system that eliminates the need for worker entry and manual filter changes.
Solution Approach 2:
The system incorporates level sensors and control systems that continuously monitor liquid accumulation in the separator and provide feedback to automatically activate drainage operations. This closed-loop feedback mechanism enables the system to respond to changing conditions and perform maintenance operations automatically based on actual liquid levels rather than fixed schedules.
2Manufacturing precision
If helical separators are machined from solid rod using five-axis CNC milling, then complex geometry is achieved, but manufacturing cost and time increase significantly
Solution Approach 1:
The helical separator is divided into modular segments that can be manufactured separately using simpler processes and then assembled together. This segmentation allows each module to be produced with less complex equipment while maintaining the overall geometric precision through standardized connection interfaces and assembly procedures.
Solution Approach 2:
The invention extracts the essential functional geometry from the full complex helical structure, identifying and manufacturing only the critical separation surfaces and channels needed for effective operation. Non-essential geometric features are simplified or omitted, allowing production using less sophisticated manufacturing equipment while preserving core separation performance.
3Productivity
If natural gas transmission uses conventional separator systems, then gas flow is managed, but harmful slugs of lubrication oil mixed with particulate compromise filter elements and require compressor shutdown
Solution Approach 1:
The separator system automatically detects and drains liquid slugs containing lubrication oil and particulate through level sensors and controlled drainage operations, preventing contaminant accumulation without requiring manual intervention or compressor shutdown. The system self-manages contaminant removal, maintaining continuous gas flow and protecting downstream equipment.
Solution Approach 2:
The system rapidly drains accumulated liquid slugs before they can compromise filter elements or cause operational problems. By quickly removing harmful contaminants through automatic drainage operations, the system prevents the buildup that would otherwise force shutdowns, maintaining continuous productivity.
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 system achieves efficient gas flow and separation of large volumes of liquid and particulate, requiring less maintenance, reducing hazardous waste, and being adaptable to various gas stream flow rates and loading densities.
Implementation Method 1
the invention related to helical elements generating high swirl forces used to separate liquid and particulate from flowing gas streams
Implementation Method 2
Helical elements such as those disclosed in U.S. Pat. No. 7,875,103... generates centripetal acceleration forces of about 1,300 G's
Implementation Method 3
Optionally, a liquid may be injected within the separator or upstream from the separator to encapsulate particulate and facilitate separation from the flowing gas stream
Implementation Method 4
Liquids and particulate separated from the gas stream flow by gravity and inertia into a waste liquid sump
Implementation Method 5
Liquids and particulate separated from the gas stream flow by gravity and inertia into a waste liquid sump
Implementation Method 6
The side stream circuit reintroduces filtered liquid back into the tank so that the filtered liquid may be re-injected in a continuous loop
Data Source
AI summary
A system and methods for separating liquids, aerosols, and solids from a flowing gas stream whereby gas flows through a helical path formed in a separator element. Partially separated gas exits the bottom of the separator element at a generally conical cavity. Clean gas exits through an inner tube that is axially aligned beneath the helical path. Separated materials exit through an annular space between the inner tube and an outer tube. Separation occurs in the helical channels which include radially diverging walls to provide an aerodynamically efficient flow, in a region of high swirl created in a generally conical cavity beneath the separator element. In higher liquid-loading or slug flow conditions, a passageway may be formed in the separator element for recirculating a portion of the gas flow exiting from the bottom of the outer tube, into an axial passage in the helical separator, and exiting from the bottom of the helical separator near the vertex of the conical cavity.