Potassium Ferrite Carbon Dioxide Absorbent for Reusable Capture

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Solution Overview

Problem

Existing carbon dioxide absorbents, such as sodium ferrite, suffer from slow initial carbon dioxide absorption rates and significant decreases in absorption rate upon reuse.

Innovation Solution

Utilizing potassium ferrite powder as a carbon dioxide absorbent, which exhibits fast initial absorption rates and minimal decrease in absorption rate during reuse, optionally combined with a resin binder, and employing a heating unit for desorption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If sodium ferrite is used as a carbon dioxide absorbent, then carbon dioxide can be absorbed, but the absorption rate during initial use is slow and the absorption rate during reuse is significantly decreased

Engineering Contradiction:

Improvecarbon dioxide absorption rateVSAvoidabsorption rate consistency across uses

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The invention changes the chemical composition parameter of the absorbent by using potassium ferrite instead of sodium ferrite. This parameter change results in both faster initial absorption rate and better maintenance of absorption rate during reuse, resolving the contradiction between productivity and reliability.

Inventive Principle:

Principle #35Parameter changes

2Ease of repair

If an absorbent is used for multiple cycles, then resource utilization is improved, but the absorption rate significantly decreases during reuse

Engineering Contradiction:

ImprovereusabilityVSAvoidabsorption rate during reuse

Core Design Contradiction:

Ease of repairVSProductivity

Solution Approach 1:

By changing the chemical composition from sodium ferrite to potassium ferrite, the material maintains high absorption rates across multiple use cycles. This parameter change enables both good reusability and sustained productivity, resolving the contradiction between ease of repair and productivity.

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

Potassium ferrite powder achieves rapid carbon dioxide absorption at room temperature with minimal degradation in performance over multiple uses, allowing efficient carbon dioxide capture and recovery.

Implementation Method 1

potassium ferrite powder has carbon dioxide absorption ability, an absorption rate of carbon dioxide during initial use is fast

Methodology Applied

Scientific EffectAbsorption: Absorption (physical)

Implementation Method 2

desorbing at least a part of carbon dioxide absorbed by the carbon dioxide absorbent by heating the carbon dioxide absorbent that is in contact with the carbon dioxide-containing gas

Methodology Applied

Scientific EffectDesorption: Desorption

Data Source

PatentUS20250242328A1Carbon dioxide absorbent, carbon dioxide absorbing device, and carbon dioxide absorbing method

Publication Date: 2025.07.31 FUJIFILM CORP

AI summary

Provided are a carbon dioxide absorbent including potassium ferrite powder, a carbon dioxide absorbing device including the carbon dioxide absorbent, and a carbon dioxide absorbing method including bringing the carbon dioxide absorbent into contact with carbon dioxide-containing gas.