Electrolyzer Membrane Replacement Scheduling Under Production Constraints

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Solution Overview

Problem

The performance deterioration of ion exchange membranes in electrolytic apparatuses leads to reduced production efficiency, necessitating timely replacement while minimizing costs and maintaining production plans, as replacing the membranes stops the electrolytic apparatus's operation, resulting in lost production time and increased costs.

Innovation Solution

An operation assistance apparatus that calculates the optimal timing for replacing ion exchange membranes by analyzing production amounts, costs, and electrolyzer performance, ensuring the production plan is met while minimizing total costs and downtime.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If ion exchange membranes are replaced to maintain production efficiency, then production efficiency is improved, but operational costs increase and production stops

Engineering Contradiction:
Improveproduction efficiencyVSAvoiddowntime
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The system performs preliminary analysis of membrane performance data, production plans, and cost information to determine the optimal replacement timing before actual replacement is needed. This allows planning the replacement in advance to minimize disruption to production operations.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system continuously monitors membrane performance parameters and provides feedback on the optimal replacement timing. This feedback mechanism allows dynamic adjustment of replacement schedules based on actual membrane degradation rates and current production requirements, balancing efficiency maintenance with minimal downtime.

Inventive Principle:
Principle #23Feedback

2Productivity

If ion exchange membranes are replaced frequently to maintain performance, then production efficiency is improved, but operational costs increase

Engineering Contradiction:
Improveproduction efficiencyVSAvoidoperational costs
Core Design Contradiction:
ProductivityVSLoss of energy

Solution Approach 1:

The system analyzes changes in membrane performance parameters over time and determines the optimal replacement point by evaluating multiple parameters including production efficiency, operational costs, and membrane degradation rates. This allows identifying the precise moment when replacement provides the best balance between maintaining efficiency and controlling costs.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The system enables operators to independently determine optimal replacement timing using the analysis tool, eliminating the need for frequent preventive replacements based on fixed schedules. This self-service approach allows replacements to be performed only when truly necessary, reducing unnecessary operational costs.

Inventive Principle:
Principle #25Self-service

3Loss of energy

If ion exchange membranes are used until complete deterioration, then operational costs are reduced, but production efficiency decreases

Engineering Contradiction:
Improveoperational costsVSAvoidproduction efficiency
Core Design Contradiction:
Loss of energyVSProductivity

Solution Approach 1:

The system continuously monitors membrane performance and provides feedback on the remaining useful life and optimal replacement timing. This allows operators to maintain membranes until the economically optimal point rather than replacing them too early or letting them deteriorate completely, thus balancing cost reduction with efficiency maintenance.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The system performs preliminary evaluation of membrane condition and predicts future performance degradation, allowing operators to plan replacements at the optimal moment before significant efficiency loss occurs, rather than reacting after deterioration has already impacted production.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS20230392271A1Operation assistance apparatus, operation assistance system, operation assistance method, and computer readable medium
Publication Date: 2023.12.07 ASAHI KASEI KOGYO KABUSHIKI KAISHA
  • US20230392271A1 patent drawing
  • US20230392271A1 patent drawing
  • US20230392271A1 patent drawing

AI summary

Provided is an operation assistance apparatus including: a production amount acquisition unit which acquires a target production amount of a product produced in a predetermined period by one electrolyzer or a plurality of electrolyzers; a production amount calculation unit which calculates a maximum production amount of the product when an ion exchange membrane included in the one electrolyzer or the plurality of electrolyzers is updated, the maximum production amount being a maximum production amount of the product produced in the period by the one electrolyzer or the plurality of electrolyzers; and a period specification unit which specifies the period during which the maximum production amount becomes equal to or more than the target production amount.