Low-foaming Gas Processing Composition for Amine Sweetening
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Solution Overview
Problem
Current antifoaming technologies are not effective in controlling foam in gas sweetening processes, which require more advanced foam suppression methods to improve the efficiency of gas purification.
Innovation Solution
A low-foaming gas processing composition comprising a silicone antifoam component with a base silicone fluid and particulate metal oxide, an emulsifying component, a polypropylene glycol component, a gas sweetening amine, and water, which is mixed with an aqueous amine solution to effectively suppress foam in gas sweetening operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional antifoaming technologies are used in gas sweetening processes, then the foam control capability is insufficient, but the process efficiency and purification effectiveness are compromised
Solution Approach 1:
The invention uses a composite antifoam composition containing silicone oil, polypropylene glycol, and emulsifier components. This composite formulation provides superior foam suppression in gas sweetening processes compared to conventional single-component antifoams, thereby improving reliability while maintaining gas purification efficiency.
Solution Approach 2:
The invention modifies the chemical and physical parameters of the antifoam agent by incorporating specific ratios of polypropylene glycol (5-50 wt%), silicone oil (45-90 wt%), and emulsifiers. These parameter changes enable effective foam control in aqueous amine solutions used for gas sweetening, resolving the contradiction between foam control capability and process efficiency.
2Reliability
If existing antifoam compositions are used, then foam suppression is partial, but the composition complexity and cost-effectiveness are reduced
Solution Approach 1:
The invention applies local quality by using specifically tailored emulsifier components (anionic, cationic, or non-ionic surfactants) that work locally within the aqueous amine solution system. This targeted approach improves foam suppression effectiveness without requiring overly complex formulation, maintaining cost-effectiveness while enhancing reliability.
3Reliability
If conventional antifoam agents are applied, then foam control is inadequate, but the dispersibility and ease of operation are compromised
Solution Approach 1:
The invention introduces emulsifier components as intermediaries that facilitate the dispersion of the antifoam composition in aqueous amine solutions. These emulsifiers (anionic, cationic, or non-ionic surfactants) act as mediators between the hydrophobic silicone oil and the aqueous environment, ensuring adequate dispersibility while maintaining effective foam control performance.
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 composition provides improved foam suppression in gas sweetening processes, is cost-effective, and readily dispersible in aqueous solutions, enhancing the efficiency of gas purification by effectively removing base-reactive impurities.
Implementation Method 1
an emulsifying component in an amount suitable for the at least substantial emulsification of the silicone antifoam component in water
Implementation Method 2
a polypropylene glycol component at least partially soluble, emulsifiable and/or dispersible in water
Implementation Method 3
The amine forms an adduct with the base-reactive impurity, thereby removing the impurity from the gas
Data Source
AI summary
The invention relates to low-foaming gas processing compositions comprising (a) a silicone antifoam component comprising a base silicone fluid and a particulate metal oxide; (b) an emulsifying component in an amount suitable for the at least substantial emulsification of the silicone antifoam component in water; (c) a polypropylene glycol component at least partially soluble, emulsifiable, and/or dispersible in water; (d) a water-soluble or water-dispersible gas processing agent; and (e) water. The invention also relates to methods for processing a gas by treating the gas with these foam suppressing compositions.