Hydrogen Sulfide Scavenging Additives with Hydroxyl Alkylated Amine Activators
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Solution Overview
Problem
Existing hydrogen sulfide (H2S) scavenging additive compositions, particularly those using zinc compounds like zinc octoate, require high dosages and are negatively affected by the addition of polyphosphoric acid (PPA), leading to reduced scavenging efficiency and re-release of H2S, making them economically inefficient and environmentally problematic.
Innovation Solution
Incorporating hydroxyl alkylated amines as activators with zinc compounds and optionally polyphosphoric acid in the scavenging compositions to enhance H2S scavenging efficiency, either alongside or after the initial additive application, thereby reducing the negative effects of PPA and improving overall scavenging performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high dosage of zinc-based additives is used for H2S scavenging, then scavenging capacity is improved, but economic efficiency deteriorates
Solution Approach 1:
The patent changes the chemical parameters of the additive system by introducing hydroxyl alkylated amines with specific molecular structures and functional groups. This transforms the zinc-based additive from a simple scavenger to a synergistic system where the amine component enhances the scavenging efficiency, allowing reduced dosage while maintaining or improving H2S removal capability.
Solution Approach 2:
The patent creates a composite additive system combining zinc-based compounds (zinc oxide, zinc stearate, zinc octoate) with hydroxyl alkylated amines (tri-isopropanol amine, tris(2-hydroxypropyl)amine). This composite approach produces a synergistic effect where the combination of materials achieves superior H2S scavenging performance compared to individual components, reducing the total quantity of additive needed.
2Stability of the object's composition
If polyphosphoric acid (PPA) is added to enhance modification, then material properties are improved, but H2S scavenging efficiency deteriorates due to re-release
Solution Approach 1:
The patent applies preliminary anti-action by introducing hydroxyl alkylated amines that preemptively counteract the harmful effect of PPA-induced H2S re-release. The amine components react with or sequester the H2S that would otherwise be released by PPA, neutralizing the negative effect before it can compromise scavenging efficiency. This allows PPA to be used for material modification without sacrificing H2S removal 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 use of hydroxyl alkylated amines significantly improves H2S scavenging efficiency of zinc-based additives, maintaining or increasing effectiveness even in the presence of PPA, thus reducing the need for high additive dosages and minimizing environmental impact.
Implementation Method 1
Incorporating hydroxyl alkylated amines as activators with zinc compounds and optionally polyphosphoric acid in the scavenging compositions to enhance H2S scavenging efficiency
Implementation Method 2
The prior art additive, i.e., the compound selected from the group comprising zinc compound, zinc soap, and zinc salt of organic acid
Implementation Method 3
an additive 1 comprising at least one compound selected from the group comprising zinc compound, zinc soap, and zinc salt of organic acid
Data Source
AI summary
The present invention relates to a hydrogen sulfide scavenging additive composition, wherein the composition comprises:a. an additive 1 comprising at least one compound selected from the group comprising zinc compound, zinc soap, and zinc salt of organic acid; andb. at least one activator comprising one or more hydroxyl alkylated amine.In one embodiment, the composition further comprises an additive 2 comprising polyphosphoric acid (PPA).In one embodiment, the present invention also relates to a method of using the hydrogen sulfide scavenging additive compositions of the present invention for scavenging the hydrogen sulfide in the medium.In one embodiment, the present invention also relates to a method of scavenging hydrogen sulphide in the medium by employing the hydrogen sulfide scavenging additive compositions of the present invention.In one embodiment, the present invention also relates to a medium comprising hydrogen sulfide (H2S) scavenging additive compositions of the present invention.