Gravity Trap for Chromatography Oil Removal
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Solution Overview
Problem
Chromatography systems face interference and damage from oil components in samples, leading to trap saturation and maintenance requirements in charcoal traps, which can result in oil reaching and damaging pneumatic pressure control modules.
Innovation Solution
A gravity trap system is introduced that condenses oil from samples without using charcoal, allowing vaporized analytes to pass through to waste or other components, eliminating the need for charcoal traps and reducing maintenance by using a fluid line with a drain valve and visual indicator for oil collection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a charcoal trap is used to remove oil from samples, then oil removal effectiveness is improved, but maintenance requirements increase due to trap saturation
Solution Approach 1:
The patent extracts the harmful oil component from the sample stream by introducing a separate gravity-based oil removal system that operates parallel to the main chromatography flow path. This extracted oil removal mechanism prevents saturation of the charcoal trap by removing bulk oil before it reaches the charcoal, thereby reducing maintenance frequency while maintaining effective oil removal.
Solution Approach 2:
The gravity trap performs preliminary oil removal before the sample reaches the charcoal trap. By condensing and collecting oil in advance through gravitational separation in the gravity trap, the system prevents oil saturation of the charcoal trap, reducing maintenance requirements while preserving the charcoal trap's effectiveness for remaining oil removal.
2Object-affected harmful factors
If a charcoal trap is used to prevent oil damage, then protection of pneumatic pressure control modules is improved, but device complexity increases
Solution Approach 1:
The patent segments the oil removal function into two distinct components: a gravity trap for bulk oil separation and a charcoal trap for residual oil removal. This segmentation protects pneumatic pressure control modules more effectively by preventing oil saturation, while the modular design allows independent optimization of each component, managing overall device complexity through functional division.
Solution Approach 2:
The gravity trap acts as an intermediary component between the sample injection system and the charcoal trap. It mediates oil removal by capturing bulk oil through gravitational condensation, thereby reducing the oil load reaching the charcoal trap and protecting downstream pneumatic components without requiring the charcoal trap to handle the full oil burden alone.
3Ease of operation
If gravity trap is used instead of charcoal trap, then maintenance needs are reduced, but oil removal effectiveness may worsen
Solution Approach 1:
The patent merges two different oil removal mechanisms into a unified system: gravity-based condensation in the gravity trap combined with adsorption in the charcoal trap. This combination maintains high oil removal effectiveness by addressing different aspects of oil removal (bulk separation and residual capture) while the gravity trap's passive operation reduces maintenance needs compared to using charcoal alone.
Solution Approach 2:
The system changes the operational parameters of oil removal by transitioning from active charcoal adsorption to passive gravity-based condensation for the first stage of oil removal. This parameter change reduces maintenance requirements as the gravity trap requires no regeneration or replacement, while the subsequent charcoal stage maintains removal effectiveness for residual oils.
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 gravity trap effectively removes oil from samples, preventing contamination of pneumatic pressure control modules and reducing maintenance needs by allowing oil to condense and drip into a trap for removal, ensuring continuous operation without charcoal.
Implementation Method 1
the trap fluid line configured to trap liquid oil in the fluid sample received through the inlet
Implementation Method 2
a gravity trap constructed and arranged to receive oil in the sample and retain the received oil
Data Source
AI summary
Certain configurations are provided herein of a trap that can be used with chromatography systems. In certain instances, the trap may be designed to remove substantially all oil in a sample comprising the oil and an analyte of interest. Methods using the gravity trap are also described.