CO2 Absorption Using Perforated Discs in Baffle-Free Scrubber
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for removing carbon dioxide from combustion gases are inefficient, particularly in terms of energy consumption and effectiveness, as they often require additional chemicals and baffles that hinder the mixing process.
Innovation Solution
A device and process utilizing a cylindrical container without liquid stream baffles, equipped with rotating discs made of perforated material, which mixes smoke gases with an alkaline carbonate solution to form a foam, allowing for efficient absorption of CO2 into the aqueous phase with low energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If rotating discs are used to mix gas and liquid, then mixing effectiveness is improved, but energy consumption increases
Solution Approach 1:
The rotating discs are made of perforated material with multiple holes, allowing gas to pass through while being mixed with liquid. This porous structure enables efficient gas-liquid contact and CO2 absorption without requiring excessive mixing energy, as the perforations facilitate natural flow and reduce resistance.
2Stability of the object's composition
If stream baffles are installed in the container, then liquid flow control is improved, but gas-liquid mixing is hindered
Solution Approach 1:
The invention removes stream baffles from the container entirely. By eliminating these flow-control structures, the system allows free rotation of gas and liquid around the central axis without obstruction, significantly improving mixing effectiveness and CO2 absorption rate.
3Productivity
If additional chemicals are added to improve CO2 absorption, then absorption effectiveness is improved, but process complexity increases
Solution Approach 1:
The system uses simple alkaline carbonate solution (such as sodium carbonate or potassium carbonate) that automatically absorbs CO2 from the combustion gases through natural chemical reaction. The process requires no additional chemicals, catalysts, or complex control systems - the alkaline solution self-regulates the absorption process based on the CO2 concentration in the gas stream.
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 process achieves a high CO2 absorption rate with minimal energy usage, as demonstrated by a 30 kilowatts/ton captured CO2 consumption, and allows for the re-use of the aqueous solution and solid carbonate, promoting CO2 reaction into bicarbonate within seconds, with the potential for further CO2 liberation and reuse.
Implementation Method 1
mixes smoke gases with an alkaline carbonate solution to form a foam
Implementation Method 2
allowing for efficient absorption of CO2 into the aqueous phase
Implementation Method 3
absorption of carbon dioxide
Implementation Method 4
CO2 reaction into bicarbonate
Implementation Method 5
passes to a sedimentation device wherein fluid and solids are separated
Data Source
AI summary
A device for purifying smoke gases comprising a cylindrical container with a gas inlet at its bottom region and a gas exit for purified gas in its top region, as well as an inlet for washing liquid and an exit for spent washing liquid, wherein the container internally does not include any current baffles so that the gas and liquid can rotate freely, and wherein the container internally has a stirring device of perforated plates, e.g. netting discs, for optimal mixing of gas and fluid. It is also disclosed a process for purifying such smoke gases, wherein such a purification device is used.