Linear Anionic Polymer Scavenger for H2S Removal
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Solution Overview
Problem
Uncontrolled microbial growth and activity in wastewater treatment and oilfield operations lead to severe environmental and safety issues due to hydrogen sulfide (H2S) generation, causing corrosion and environmental hazards, which existing technologies struggle to address effectively.
Innovation Solution
Incorporating linear anionic polymers into hydrogen sulfide scavenger compositions, such as triazine/aldehyde blends, to enhance scavenging efficiency by preventing agglomeration and allowing multiple hydrogen sulfide molecules to be scavenged per mole of triazine, thereby reducing H2S levels in gas and liquid streams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional hydrogen sulfide scavengers are used, then hydrogen sulfide removal is achieved, but scavenging efficiency is limited and solid precipitation occurs
Solution Approach 1:
A water-soluble polymer is introduced as an intermediary substance that interacts with the hydrogen sulfide scavenger to prevent agglomeration of reaction products. The polymer acts as a dispersing agent that keeps the scavenger molecules separated and accessible, thereby preventing solid precipitation while enhancing the scavenging efficiency of hydrogen sulfide removal.
Solution Approach 2:
The invention combines the hydrogen sulfide scavenger with a water-soluble polymer to create a composite scavenging system. This composite formulation integrates the reactive scavenger component with the functional polymer component, where the polymer provides structural support and prevents aggregation, resulting in improved overall performance without the harmful solid precipitation.
2Productivity
If hydrogen sulfide scavengers are used, then hydrogen sulfide levels are reduced, but agglomeration limits the number of hydrogen sulfide molecules scavenged per mole of triazine
Solution Approach 1:
The water-soluble polymer serves as a spacer or intermediary that physically separates triazine molecules, preventing them from agglomerating. This separation allows each triazine molecule to maintain its reactivity and scavenge multiple hydrogen sulfide molecules (theoretically up to three per triazine), thereby maximizing scavenging efficiency without the limiting effect of agglomeration.
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 linear anionic polymers increases hydrogen sulfide scavenging efficiency by 10% to 30%, reduces solid precipitation, and provides a significant economic and environmental advantage by allowing complete reaction with hydrogen sulfide, resulting in a more effective and efficient removal process.
Implementation Method 1
Incorporating linear anionic polymers into hydrogen sulfide scavenger compositions, such as triazine/aldehyde blends, to enhance scavenging efficiency by preventing agglomeration
Implementation Method 2
the scavenger composition reacts with the sulfur contaminant to reduce an amount of the sulfur contaminant in the fluid
Data Source
AI summary
Provided is a method of introducing a scavenger composition into a fluid contaminated with a sulfur contaminant, mixing the scavenger composition with the fluid in a vessel, and recovering the fluid containing a reduced amount of sulfur contaminant from the effluent. The scavenger composition comprises a hydrogen sulfide scavenger and a linear anionic polymer. The linear anionic polymer is present in an amount of about 0.1% to about 50% by weight of the scavenger composition and has a number average molecular weight of about 1.0×103 to about 2.0×104 Daltons.