Non-Aqueous Electrolyte Circulation for Acidic Impurity Control

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Solution Overview

Problem

Conventional methods for producing non-aqueous electrolyte solutions struggle with maintaining consistent acidic impurity concentrations due to ion-exchange resin degradation, leading to increased operational complexity and costs.

Innovation Solution

A production apparatus and method involving an original liquid tank, a weakly basic anion-exchange resin container, and a liquid circulation pipe to return processed solution to the tank, allowing for continuous control of acidic impurity levels by fully utilizing the ion-exchange resin's capacity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a single-pass ion-exchange method is used, then the initial acidic impurity removal is effective, but the resin ability decreases with time and requires frequent replacement

Engineering Contradiction:

Improveacidic impurity removal effectivenessVSAvoidion-exchange resin service life

Core Design Contradiction:

ReliabilityVSDuration of action of stationary object

Solution Approach 1:

The patent implements continuous circulation of the electrolyte solution through the ion-exchange resin column, maintaining constant contact between the solution and resin. This continuous action ensures that the resin's ion-exchange capacity is fully utilized and regenerated, preventing the decline in removal effectiveness that occurs in single-pass methods.

Inventive Principle:

Principle #20Continuity of useful action

Solution Approach 2:

The circulating system allows the ion-exchange resin to continuously process the electrolyte solution without external intervention. The system self-regulates by maintaining flow through the resin bed, enabling the resin to maintain its ion-exchange ability throughout extended operation periods without frequent replacement.

Inventive Principle:

Principle #25Self-service

2Manufacturing precision

If ion-exchange resin is frequently replaced, then acidic impurity concentration can be maintained, but operational complexity and cost increase

Engineering Contradiction:

Improveacidic impurity concentration consistencyVSAvoidoperational complexity

Core Design Contradiction:

Manufacturing precisionVSEase of operation

Solution Approach 1:

The continuous circulation system maintains consistent acidic impurity removal by keeping the electrolyte solution in constant contact with the ion-exchange resin. This continuous processing ensures uniform quality output without the need for frequent resin replacement or batch processing interruptions.

Inventive Principle:

Principle #20Continuity of useful action

Solution Approach 2:

The system dynamically adjusts the circulation flow rate to optimize the interaction between electrolyte solution and ion-exchange resin. By controlling the flow dynamics, the system maintains effective ion-exchange performance throughout extended operation, reducing the frequency of resin replacement while ensuring consistent product quality.

Inventive Principle:

Principle #15Dynamics

3Manufacturing precision

If ion-exchange resin is frequently replaced, then acidic impurity concentration can be maintained, but production cost increases

Engineering Contradiction:

Improveacidic impurity concentration consistencyVSAvoidproduction cost

Core Design Contradiction:

Manufacturing precisionVSEase of manufacture

Solution Approach 1:

The continuous circulation through the ion-exchange resin column maximizes the utilization of resin capacity, extending its service life. This continuous operation reduces the frequency of resin replacement, thereby lowering operational costs while maintaining consistent acidic impurity removal effectiveness.

Inventive Principle:

Principle #20Continuity of useful action

Solution Approach 2:

The system optimizes operational parameters such as circulation flow rate and contact time to enhance ion-exchange efficiency. By adjusting these parameters, the system maintains effective acidic impurity removal with extended resin service life, reducing replacement frequency and associated costs.

Inventive Principle:

Principle #35Parameter changes

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

Enables production of high-quality non-aqueous electrolyte solutions at a lower cost by maintaining consistent acidic impurity concentrations and extending the resin exchange interval.

Implementation Method 1

an ion-exchange resin container that accommodates a weakly basic anion-exchange resin, and also including a liquid circulation pipe that returns a processed solution that is obtained after flowing the liquid to be processed from the original liquid tank through the ion-exchange resin container

Methodology Applied

Scientific EffectIon exchange: Ion Exchange

Data Source

PatentUS12381256B2Production method of non-aqueous electrolyte solution

Publication Date: 2025.08.05 ORGANO CORP

AI summary

Provided is a production apparatus of a non-aqueous electrolyte solution that can produce conveniently and at a low cost the non-aqueous electrolyte solution while readily controlling an acidic impurity concentration so as to be in a prescribed level. The production apparatus of the non-aqueous electrolyte solution includes an original liquid tank that stores a liquid to be processed containing a non-aqueous electrolyte solution, and an ion-exchange resin container that accommodates a weakly basic anion-exchange resin, and also including a liquid circulation pipe that returns the liquid to be processed that is obtained after flowing the liquid to be processed from the original liquid tank through the ion-exchange resin container to the original liquid tank.