Hansen Solubility Scale Dispersant Selection
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Solution Overview
Problem
Geothermal power plants face challenges in selecting the most suitable scale prevention agents due to varying silica-based scale components and dissolved metal concentrations, leading to unpredictable precipitates and increased maintenance costs.
Innovation Solution
A method using Hansen solubility parameters to select a scale dispersant by determining intrinsic physical property coordinates of the target scale and water, allowing for the identification of suitable substances that can suppress scale precipitation and adhesion based on specific coordinate relationships.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional agents (oxidizing agents or alkaline agents) are used based on empirical data, then scale removal has been achieved, but unexpected precipitates occur and the most suitable agent selection cannot be carried out
Solution Approach 1:
The invention changes the selection parameter from empirical trial-and-error to Hansen solubility parameter coordinates. By calculating the HSP coordinates of the scale component and water, and using the difference to select dispersants, the method achieves both reliable scale removal and adaptable selection across different geothermal power plants with varying water compositions.
2Reliability
If cleaning agents such as hydrofluoric acid are used to remove scale, then scale removal is achieved, but industrial waste increases and maintenance costs increase
Solution Approach 1:
The invention applies preliminary action by selecting and adding scale dispersants before scale precipitation occurs. By preventing scale formation in the first place through HSP-based dispersant selection, the need for subsequent cleaning with hydrofluoric acid and the generation of industrial waste is eliminated.
3Reliability
If known agents are used based on empirical data, then general scale control has been achieved, but different types of silica-based scale are deposited in different geothermal power plants and the most suitable agent cannot be selected
Solution Approach 1:
The invention applies local quality by tailoring the dispersant selection to the specific local conditions of each geothermal power plant. By calculating HSP coordinates specific to each plant's water composition and scale type, the method enables optimized dispersant selection for each local environment rather than using a universal empirical approach.
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
This approach enables the selection of effective scale dispersants that reduce maintenance cycles and industrial waste by matching the dispersant's properties with the target water and scale, effectively preventing scale precipitation and adhesion in geothermal power generation systems.
Implementation Method 1
a step of obtaining a coordinate Cs of an intrinsic physical property value, based on Hansen solubility, of a target scale; a step of obtaining a coordinate Cw of an intrinsic physical property value, based on Hansen solubility, of a target water
Data Source
AI summary
A method for selecting a scale dispersant compatible with characteristics of a target water and scale is deposited. A method for selecting a scale dispersant, comprising steps of obtaining a coordinate Cs of an intrinsic physical property value, based on Hansen solubility, of a target scale; a step of obtaining a coordinate Cw of an intrinsic physical property value, based on Hansen solubility, of a target water; and selecting a scale dispersant based on a positional relationship between the coordinate Cs of the intrinsic physical property value of the target scale and the coordinate Cw of the intrinsic physical property value of the target water.