Polymer-Bound Aldehyde Corrosion Inhibitor for Low Emissions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing corrosion inhibitor formulations used in oil and gas industries are toxic and environmentally hazardous, posing risks in regulated offshore environments, and they fail to meet industry standards for corrosion inhibition performance and environmental impact.
Innovation Solution
A corrosion inhibitor composition comprising a reaction product of a lower molecular weight aldehyde or ketone with a higher molecular weight component, which is stable at near-neutral pH and releases the aldehyde or ketone into acidic fluids to inhibit corrosion, reducing toxicity and volatility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional corrosion inhibitors containing free aldehydes and ketones are used, then corrosion inhibition performance is achieved, but toxicity and environmental hazard increase
Solution Approach 1:
The aldehyde or ketone molecules are nested within the polymer structure as pendant groups through chemical bonding. The active corrosion-inhibiting moieties are contained within the polymer chain, releasing them only under specific acidic conditions (pH < 5), thereby reducing their environmental hazard while maintaining corrosion protection functionality.
Solution Approach 2:
The polymer acts as an intermediary carrier that transports and controls the release of aldehyde/ketone corrosion inhibitors. The polymer backbone serves as a mediator that holds the active ingredients in a stable, non-toxic form during storage and application, releasing them only when needed in acidic environments.
2Reliability
If free aldehydes and ketones are used as corrosion inhibitors, then corrosion protection is provided, but volatility and emissions increase
Solution Approach 1:
The volatile aldehyde or ketone molecules are nested within the polymer structure as chemically bonded pendant groups. This nesting confines the active corrosion-inhibiting moieties within the polymer matrix, preventing their volatilization under normal storage and handling conditions, and eliminating emissions while maintaining corrosion protection capability.
Solution Approach 2:
The polymer structure acts as a flexible molecular shell that encapsulates the aldehyde/ketone groups. This polymer shell provides a physical and chemical barrier that prevents the volatile active ingredients from evaporating, thereby eliminating emissions while allowing controlled release under acidic conditions.
3Object-affected harmful factors
If polymerizable corrosion inhibitors are used to reduce toxicity, then environmental impact improves, but corrosion inhibition efficiency may decrease
Solution Approach 1:
The polymer is designed with controlled molecular weight, functional group density, and side chain architecture to optimize both environmental compatibility and corrosion inhibition efficiency. By adjusting polymer parameters such as degree of polymerization and pendant group concentration, the formulation achieves reduced toxicity while maintaining sufficient corrosion protection performance.
Solution Approach 2:
The invention creates a composite functional material combining the polymer backbone structure with aldehyde/ketone functional groups. This composite structure integrates the benefits of polymer stability and low toxicity with the corrosion-inhibiting properties of aldehydes and ketones, achieving both environmental compliance and effective corrosion protection.
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 environmental footprint and reduced toxicity by chemically attaching aldehydes and ketones to the higher molecular weight component, ensuring they are released only in acidic conditions, thus minimizing emissions and hazards.
Implementation Method 1
a reaction product of a lower molecular weight component and a higher molecular weight component. The lower molecular weight component includes at least one aldehyde or ketone or mixture thereof. The higher molecular weight component has at least one functional side group that reacts with the at least one aldehyde or ketone
Implementation Method 2
The at least one aldehyde or ketone or mixture thereof is regenerated and separated from the higher molecular weight component when the corrosion inhibiting composition is part of an aqueous acidic fluid having a pH less than or equal to 1
Data Source
AI summary
An environmentally-friendly corrosion inhibitor composition is provided that includes a reaction product of a lower molecular weight component and a higher molecular weight component. The lower molecular weight component includes at least one aldehyde or ketone or mixture thereof. The higher molecular weight component has at least one functional side group that reacts with the at least one aldehyde or ketone or mixture thereof such that the corrosion inhibiting composition is stable in bulk form and in aqueous fluids at near-neutral pH conditions. The at least one aldehyde or ketone or mixture thereof is regenerated and separated from the higher molecular weight component when the corrosion inhibiting composition is part of an aqueous acidic fluid having a pH less than or equal to 1. Other aspects, including application of the corrosion inhibitor composition in treatment fluids for downhole applications, are described and claimed.