Vapor-Based Cementitious Material Production With CO2 Utilization
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The cement industry faces challenges in decarbonization efforts due to high CO2 emissions from traditional limestone-based production processes, with current solutions like supplementary cementitious materials (SCM) facing supply and cost issues, and carbon capture utilization and storage (CCUS) imposing a premium, while alternative methods disrupt supply chains and increase costs.
Innovation Solution
A system and method for producing cementitious materials through a vapor-based synthesis process at lower temperatures (200° C. to 1000° C.) using hydrothermal vapor, which includes a raw material preparation, processing, and reaction chamber subsystems, enabling efficient CO2 capture and utilization without upending supply chains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If traditional limestone-based production processes are used, then cement production is achieved, but high CO2 emissions occur
Solution Approach 1:
The patent changes the fundamental parameters of the cement production process by using hydrothermal vapor recrystallization at lower temperatures (200-1000°C) instead of traditional high-temperature calcination (1500°C). This parameter change enables CO2 capture and utilization while maintaining cement production, transforming the harmful high-temperature decomposition process into a beneficial low-temperature synthesis process that produces carbon-neutral cementitious materials.
Solution Approach 2:
The patent converts the harmful CO2 emissions from traditional cement production into a beneficial resource by capturing CO2 and using it as a carbon source in the hydrothermal vapor recrystallization process. The CO2 that would normally be released into the atmosphere is instead utilized to form carbonate minerals in the cementitious material, turning a harmful emission into a valuable ingredient that contributes to the final product.
2Object-generated harmful factors
If supplementary cementitious materials (SCM) are used to reduce clinker, then CO2 emissions are reduced, but supply/demand imbalance and cost increase
Solution Approach 1:
The patent enables the cement production process to be self-sufficient by capturing CO2 from the production process itself and utilizing it as a carbon source for synthesizing cementitious materials. This self-service approach eliminates the need to import external supplementary cementitious materials, resolving the supply chain complexity and cost issues associated with SCM while maintaining CO2 emission reductions.
3Object-generated harmful factors
If carbon capture utilization and storage (CCUS) is implemented, then CO2 emissions are reduced, but cost premium increases
Solution Approach 1:
The patent implements CCUS by converting CO2 emissions into a valuable resource that is directly utilized in the cement production process. Rather than treating CO2 capture as a costly separate step, the captured CO2 becomes a feedstock for synthesizing cementitious materials, thereby eliminating the cost premium associated with traditional CCUS retrofits while achieving substantial CO2 emission reductions.
4Object-generated harmful factors
If alternative fuels (oxy-fuel, electrochemical) are used, then decarbonization is achieved, but price premium and regulation hurdles increase
Solution Approach 1:
The patent avoids the operational complexity of alternative fuel systems by changing the fundamental process parameters to use hydrothermal vapor recrystallization at lower temperatures. This approach achieves decarbonization through process innovation rather than fuel substitution, eliminating the need for oxy-fuel combustion systems or electrochemical reactors and their associated regulatory hurdles and operational complexities.
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 cost-effective, industrial-scale production of carbon-neutral cementitious materials, reducing CO2 emissions and maintaining energy efficiency, while being compatible with renewable energy sources and avoiding disruptions to the cement supply chain.
Implementation Method 1
low-temperature production of cementitious materials via a hydrothermal vapor recrystallization process
Implementation Method 2
vapor-based synthesis process at lower temperatures (200° C. to 1000° C.) using hydrothermal vapor
Implementation Method 3
enabling efficient CO2 capture and utilization without upending supply chains
Data Source
AI summary
A system for making cementitious material, the system comprising: a raw material preparation subsystem; a raw material processing subsystem; a process atmosphere generation subsystem; and a reaction chamber subsystem. A method for making cementitious material, the method comprising: comminuting an input material; subjecting the input to a vapor-based synthesis; subjecting the input to a reaction atmosphere; producing an exhaust; processing the exhaust; and forming a carbonate product.