Switchable Two-Stage Coalescence Filtration for Clogging Control
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Solution Overview
Problem
Existing coalescers in natural gas pipelines are prone to clogging and have limited filtration efficiency due to the accumulation of solid particles and droplets, especially under high-concentration conditions, leading to increased energy consumption, frequent replacements, and high operational costs.
Innovation Solution
A switchable two-stage coalescence separation system with a particle detector and multi-way valves that adjust the flow direction based on impurity content, using super-amphiphilic and amphiphobic membranes to separate solids and liquids effectively, allowing for selective filtration and reducing clogging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If coalescers are mounted horizontally, then installation space is reduced, but liquid clogging increases and filtration efficiency decreases
Solution Approach 1:
The patent applies the dynamics principle by making the coalescer mounting orientation switchable between horizontal and vertical positions. This dynamic adjustment capability allows the system to adapt to different operational conditions: horizontal mounting for space-constrained installations and vertical mounting for high liquid content gas streams, thereby resolving the contradiction between space savings and filtration reliability.
2Reliability
If coalescers are mounted vertically, then filtration efficiency is improved, but installation space increases
Solution Approach 1:
The switchable mounting orientation system allows vertical installation when high filtration efficiency is the priority, while providing the option to switch to horizontal mounting when space constraints arise. This dynamic flexibility resolves the contradiction by allowing optimization based on specific operational requirements.
3Productivity
If filter elements are replaced frequently, then continuous operation is maintained, but operational costs increase
Solution Approach 1:
The patent implements preliminary action through the particle detector that continuously monitors impurity content upstream of the coalescer. By detecting changes in gas composition beforehand, the system can proactively switch coalescer banks before filter elements become clogged, extending their service life and reducing replacement frequency while maintaining continuous operation.
Solution Approach 2:
The particle detector provides real-time feedback on impurity content to the control system, which adjusts coalescer bank selection accordingly. This feedback mechanism allows the system to optimize filter element usage by switching banks based on actual contamination levels, thereby extending element life and reducing operational costs.
4Adaptability or versatility
If particle detector and multi-way valves are added, then filtration adaptability is improved, but device complexity increases
Solution Approach 1:
The control system serves multiple functions: it receives signals from the particle detector, determines impurity content, selects appropriate coalescer banks, and controls multi-way valves. This multi-functionality justifies the added complexity by providing adaptive filtration that responds to varying gas composition requirements.
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 prolongs filter element life, reduces energy consumption, and decreases maintenance and procurement costs by up to 40% while maintaining high filtration efficiency, especially under varying impurity conditions.
Implementation Method 1
a particle detector configured to detect a content of the solid particles and a content of the droplets in the gas entering the coalescer housing
Implementation Method 2
each of the two-stage filter elements configured to separate the solid particles and the droplets from the gas
Implementation Method 3
using super-amphiphilic and amphiphobic membranes to separate solids and liquids effectively
Implementation Method 4
The gas with droplets enters the filter element through micropores thereof from an inner surface of the coalescing filter element. The droplets in the gas are captured by fibers of the filter element
Implementation Method 5
The coalesced droplets move to the outside of the filter element along with the gas flow, and finally drain from the outer surface of the filter element by gas drag force and gravity
Implementation Method 6
The coalesced droplets move to the outside of the filter element along with the gas flow, and finally drain from the outer surface of the filter element by gas drag force and gravity
Data Source
AI summary
A switchable two-stage coalescence separation system, including a coalescer housing, a plurality of two-stage filter elements, and a particle detector. A lower portion and an upper portion of each of the two-stage filter elements are located in a lower chamber and an upper chamber of the coalescer housing, respectively. Two gas inlet branch pipes are communicated with the lower chamber and the upper chamber, respectively and are connected to a gas inlet main pipe through a first multi-way valve. The particle detector is disposed on the gas inlet main pipe. Two outlet branch pipes are communicated with the lower chamber and the upper chamber, respectively and are connected to a gas outlet main pipe through a second multi-way valve.