Corrosion Inhibiting Formulations Stabilized by Triazine Units
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Solution Overview
Problem
Corrosion-inhibiting compositions containing sulfur derivatives, such as thioglycolic acid, are unstable and emit unpleasant, potentially hazardous odors due to decomposition, making them unsuitable for storage and use in the oil and gas industry.
Innovation Solution
Incorporating a compound with a triazine unit into the corrosion-inhibiting formulations stabilizes them, preventing odor evolution and maintaining anticorrosion efficiency, while reducing toxic gas production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sulfur derivatives (e.g., thioglycolic acid) are added to increase anticorrosion performance, then corrosion inhibition efficiency is improved, but storage stability deteriorates and unpleasant odors are generated
Solution Approach 1:
The patent introduces amines as intermediary substances that react with decomposed H2S to form stable amine sulfides. This mediator captures the harmful decomposition products of sulfur derivatives, preventing odor generation while allowing the sulfur derivatives to maintain their anticorrosion function. The amine acts as a buffer between the sulfur derivative decomposition and the environment.
Solution Approach 2:
The patent converts the harmful decomposition of sulfur derivatives (which generates unpleasant odors and reduces stability) into a beneficial process by capturing the released H2S through amine reaction. The decomposition that would normally be harmful is redirected to form stable, non-odorous amine sulfide complexes, thus transforming the stability problem into a controlled chemical reaction.
2Reliability
If sulfur derivatives are used to enhance corrosion protection, then anticorrosion performance is improved, but toxic gas (H2S) production increases
Solution Approach 1:
Amines serve as intermediary substances that intercept and react with toxic H2S gas produced during sulfur derivative decomposition. The amine sulfide formation prevents H2S release into the environment while maintaining the anticorrosion mechanism of the original sulfur compounds.
Solution Approach 2:
The toxic H2S gas that would normally be released during storage is converted into beneficial amine sulfide complexes that remain in the formulation. This transformation eliminates the toxic emission problem while preserving the corrosion inhibition capability.
3Stability of the object's composition
If H2S scavengers are added to trap sulfides from decomposition, then storage stability is improved, but formulation complexity and potential clogging issues increase
Solution Approach 1:
The patent changes the chemical parameters of the formulation by selecting specific amine compounds with appropriate molecular weights and solubility characteristics. These parameter choices ensure that the amine sulfide products remain soluble and do not precipitate, avoiding clogging while achieving H2S scavenging. The solution involves optimizing concentration ratios and molecular properties rather than adding complex physical separation systems.
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 addition of a triazine unit enhances the stability and anticorrosion performance of the formulations, eliminating odor issues and toxic gas production, ensuring safer and more effective corrosion inhibition.
Implementation Method 1
the sulfur derivatives probably partly decompose into hydrogen sulfide (H2S) at the storage temperature... use of at least one compound bearing at least one triazine unit... for trapping sulfides resulting from the decomposition of the sulfur derivatives
Data Source
AI summary
The present invention relates to formulations for inhibiting the corrosion of the metals used in the oil industry, and more generally in all types of industries for drilling for fossil compounds or ores, such as gas or oil. The corrosion-inhibiting formulations are stable during storage, and have improved properties due to the presence of at least one compound having at least one triazine unit. The invention also relates to the use of at least one compound comprising at least one triazine unit in a corrosion-inhibiting formulation, as well as to the use of said corrosion-inhibiting formulation in the oil, gas and mining industry.