Carbonated Slurry Tank Control for Stable Retention Time

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing methods struggle to continuously and efficiently fix carbon dioxide in a slurry formed of calcium-containing powder and water, while also stabilizing the average retention time of the slurry during the carbonation process.

Innovation Solution

A carbonated slurry production system comprising a slurry tank with separate storage portions for the slurry and carbon dioxide gas, a slurry supply device, a carbon dioxide supply device, and a slurry control device that adjusts the retention time based on liquid surface measurements to ensure efficient carbonation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the slurry is continuously supplied to the slurry tank for carbonation, then the productivity of carbonated slurry production is improved, but the average retention time of the slurry becomes difficult to control stably

Engineering Contradiction:

Improveproductivity of carbonated slurry productionVSAvoidstability of average retention time control

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent implements a feedback control mechanism where liquid surface measurement units continuously monitor the liquid surface heights in both storage portions, and the control device adjusts the slurry supply and discharge rates based on these measurements to maintain the desired retention time. This closed-loop feedback system enables stable retention time control even during continuous operation, resolving the contradiction between improved productivity and reliable retention time control.

Inventive Principle:

Principle #23Feedback

2Device complexity

If the slurry and carbon dioxide-containing gas are brought into contact in a single storage portion, then the device complexity is reduced, but the carbonation efficiency and retention time control become compromised

Engineering Contradiction:

Improvestructure of slurry storage and carbonationVSAvoidcarbonation efficiency

Core Design Contradiction:

Device complexityVSProductivity

Solution Approach 1:

The patent divides the slurry storage system into two separate storage portions: a first storage portion for carbonation (where slurry contacts carbon dioxide-containing gas) and a second storage portion for aging (where slurry contacts only air). This segmentation allows independent control of carbonation and aging processes, improving carbonation efficiency and retention time control while maintaining relatively simple device structure.

Inventive Principle:

Principle #1Segmentation

3Manufacturing precision

If the retention time of the slurry is extended to improve carbonation quality, then the carbonation efficiency is improved, but the productivity of slurry production decreases

Engineering Contradiction:

Improvecarbonation qualityVSAvoidslurry production rate

Core Design Contradiction:

Manufacturing precisionVSProductivity

Solution Approach 1:

The patent maintains continuous operation of the carbonation process by continuously supplying slurry to the first storage portion, continuously discharging carbonated slurry, and simultaneously supplying slurry to and discharging slurry from the second storage portion. This continuous operation allows the system to achieve both high carbonation quality (through controlled retention time in the second storage portion) and high productivity (through uninterrupted production), resolving the contradiction between manufacturing precision and productivity.

Inventive Principle:

Principle #20Continuity of useful action

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 system allows for continuous and efficient fixation of carbon dioxide in the slurry, with stable control over the average retention time, ensuring high-quality carbonated slurry production.

Implementation Method 1

a carbonated slurry production system for producing a carbonated slurry formed by carbonation of a slurry containing calcium-containing powder and water by a carbon dioxide-containing gas

Methodology Applied

Scientific EffectCarbonation reaction: Absorption (physical)

Implementation Method 2

a liquid surface measurement unit configured to measure a height of a liquid surface of the slurry

Methodology Applied

Scientific EffectLiquid surface height measurement:

Data Source

PatentUS20260108848A1Carbonated slurry production system

Publication Date: 2026.04.23 TAIHEIYO CEMENT CORP

AI summary

A carbonated slurry production system that can continuously and efficiently fix carbon dioxide in a slurry formed of calcium-containing powder and water, and that can easily and stably control an average retention time of the slurry,including: a slurry tank having a first slurry storage portion for contacting the slurry with a carbon dioxide-containing gas, a slurry supply device for supplying a slurry containing a calcium-containing powder and water; a carbon dioxide-containing gas supply device for supplying a carbon dioxide-containing gas at a pressure greater than atmospheric pressure to a gas phase formed of the carbon dioxide-containing gas in the first slurry storage portion; carbonated slurry discharge device for discharging the carbonated slurry; liquid surface measurement unit for measuring the height of a liquid surface; and a slurry control device for controlling the average retention time of the slurry based on the heights of the first and second liquid surfaces.