Mid-Temperature Solid CO2 Sorbent for Fluidized Bed Capture
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Solution Overview
Problem
Conventional pre-combustion CO2 capture & storage technologies face issues with low heat efficiency, high energy consumption, and complexity, while polymer membrane technology has difficulties in large-scale industrial application due to low yield.
Innovation Solution
A mid-temperature range dry regenerable solid carbon dioxide sorbent composition for a fluidized bed sorption enhanced water gas shift (SEWGS) process, comprising an active ingredient, support, reaction accelerator, inorganic binder, and viscosity modifier, manufactured through a slurry composition and spray-drying method, enhancing sorption capacity and physical strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional physical sorbents (Selexol, Rectisol) are used for CO2 capture, then CO2 capture capability is achieved, but heat efficiency is low and energy consumption is high
Solution Approach 1:
The patent changes the operational temperature parameter from low-temperature conventional processes to mid-temperature range (200-400°C), which fundamentally alters the thermodynamic efficiency and energy consumption profile of the CO2 capture process while maintaining effective sorption capability
Solution Approach 2:
The patent employs composite sorbent materials combining metal oxides (CaO, MgO, SrO, BaO) with support structures and promoters, creating a material system that achieves high CO2 capture capability at mid-temperatures, thereby resolving the contradiction between energy efficiency and capture effectiveness
2Loss of energy
If polymer membrane technology is used for CO2 capture, then high-energy efficiency is achieved, but large-scale industrial application is difficult due to low yield
Solution Approach 1:
The patent utilizes porous sorbent particles with controlled pore structures that enable high surface area for CO2 sorption while maintaining mechanical strength and flowability, allowing scalable industrial application unlike membrane technologies
Solution Approach 2:
The patent employs discrete particulate sorbent materials that can be easily handled, transported, and processed in conventional industrial equipment, enabling modular scaling from pilot to commercial scale without the manufacturing complexities of membrane systems
3Device complexity
If dry CO2 sorbents are used for fluidized bed process, then process simplification is achieved, but physical strength and stability are challenging to maintain
Solution Approach 1:
The patent creates composite sorbent structures where active metal oxide components are supported on structurally robust carriers with binder materials, providing the mechanical strength necessary for fluidized bed operation while maintaining chemical reactivity for CO2 capture
Solution Approach 2:
The patent applies different material properties to different regions of the sorbent particle - high reactivity at the surface for CO2 sorption, while the core provides structural integrity and resistance to attrition during fluidized bed cycling
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 sorbent demonstrates excellent sorption capacity, stability, and physical strength, suitable for commercial-scale CO2 capture in syngas applications, reducing energy consumption and simplifying process design, with improved market applicability and greenhouse gas reduction potential.
Implementation Method 1
a mid-temperature range dry regenerable solid carbon dioxide (CO2) sorbent for a water gas shift process
Implementation Method 2
manufactured through a slurry composition and spray-drying method
Data Source
AI summary
Provided are a composition and a manufacturing method of a solid CO2 sorbent having excellent physical properties and chemical reaction characteristics, particularly having an excellent mid-temperature range activity for a fluidized bed process, for use in collecting a CO2 source (pre-combustion or pre-utilization) in syngas application fields such as integrated coal gasification combined cycle (IGCC) power systems, synthetic natural gas (SNG) and synthetic liquid fuel (CTL).