Rotating Packed Bed CO2 Capture for Uniform Barium Carbonate
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The alkanolamine chemical absorption method for CO2 has high regeneration energy consumption, low mass transfer efficiency, and large equipment volume, and the integrated technology for preparing barium carbonate faces issues of low efficiency and uneven particle size distribution, making it difficult to achieve efficient CO2 capture and ultrafine preparation.
Innovation Solution
A system and method utilizing a rotating packed bed and ultrasonic mineralization reactor to enhance CO2 absorption and mineralization, involving a rotating packed bed for gas-liquid reaction, an ultrasonic mineralization device for solid-liquid mixing, and a drying process to produce high-purity barium carbonate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional absorption tower is used for CO2 capture, then equipment structure is simple, but mass transfer efficiency is low and equipment volume is huge
Solution Approach 1:
The packed bed is rotated at high speed to create a dynamic system where liquid is thrown outward by centrifugal force, forming a thin film on packing surfaces. This dynamic operation enhances mass transfer efficiency while reducing the required equipment volume compared to static absorption towers
Solution Approach 2:
The rapid rotation of the packed bed creates mechanical vibration and turbulence in the liquid phase, intensifying gas-liquid contact and mass transfer. This vibration effect allows for more efficient CO2 absorption in a compact device
2Manufacturing precision
If traditional stirred tank reactor is used for barium carbonate preparation, then process is simple, but particle size distribution is uneven and particles are large
Solution Approach 1:
The rotating packed bed creates dynamic flow patterns and intense mixing through centrifugal forces, resulting in uniform nucleation and growth conditions for barium carbonate particles. This produces fine and uniform particles without requiring complex reactor designs
Solution Approach 2:
The system uses fluid dynamics in the rotating packed bed to control particle formation, where liquid flow patterns and gas-liquid interaction in the rotating system determine particle size distribution, achieving uniform fine particles through hydrodynamic control
3Productivity
If alkanolamine absorption method is used for CO2 capture, then absorption rate is fast, but regeneration energy consumption is high
Solution Approach 1:
The system changes the operating parameters by using a rotating packed bed at high speeds, which enhances mass transfer coefficients and allows for more efficient absorption. This improved efficiency reduces the amount of absorbent that needs to be regenerated, thereby reducing energy consumption
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 achieves efficient CO2 capture, rapid mineralization reaction, and low energy consumption, producing high-purity barium carbonate with uniform particle size, suitable for industrial applications.
Implementation Method 1
A rotating packed bed is provided with a first gas inlet, a first exhaust port, a first liquid inlet, and a first liquid outlet... the rotating packed bed includes a gas-liquid reaction shell, a rotor, a packing module
Implementation Method 2
the alkanolamine chemical absorption method for CO2 has the problem of high regeneration energy consumption by heating and desorption, and most of the equipment in industry is absorption tower, which has the problems of low mass transfer efficiency
Implementation Method 3
an ultrasonic mineralization reaction device... The ultrasonic generator is connected to the ultrasonic transducer
Implementation Method 4
In the CO2 mineralization technology, alkaline earth metal rich in calcium, barium and magnesium or alkaline solid wastes are used to carry out mineralization reaction with CO2 in an industrial flue gas, and CO2 is permanently stored in the form of solid product carbonate
Implementation Method 5
a drying process to produce high-purity barium carbonate
Data Source
AI summary
Provided are a system and method for preparing barium carbonate by enhancing alkanolamine absorption and mineralization of CO2. The system includes a rotating packed bed provided with a first gas inlet, a first exhaust port, a first liquid inlet, and a first liquid outlet. An absorbent barren liquid storage container in communication with the first liquid inlet through a pipeline on which a water pump is arranged. A rich liquid storage container is in communication with the first liquid outlet through a pipeline. A saturated liquid storage container, an ultrasonic mineralization reaction device, and a mineralization feedstock storage container. The saturated liquid storage container is in communication with the rich liquid storage container and the ultrasonic mineralization reactor through a pipeline, respectively. The mineralization feedstock storage container is communicated with the ultrasonic mineralization reaction device through a pipeline on which a feeding blower is arranged.