Multi-Chamber Reactor for Low-Emission PCC Production
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Solution Overview
Problem
Conventional methods for producing Precipitated Calcium Carbonate (PCC) are costly and environmentally harmful due to high greenhouse gas emissions from the heat source used in limestone processing, necessitating a method to reduce emissions and processing costs.
Innovation Solution
A reactor and carbonation equipment system that utilizes recycled calcium oxide and exhaust gas as raw materials, integrating hydration and carbonation processes in a single reactor to simplify processing and reduce manufacturing costs, with agitators and specific chamber designs for efficient material handling and reaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional limestone processing with heat source is used, then calcium oxide can be produced, but greenhouse gas emissions increase and processing cost increases
Solution Approach 1:
The invention changes the production method from thermal decomposition (high temperature heating) to direct utilization of recycled calcium oxide. This parameter change in the production process eliminates the need for heat sources and associated greenhouse gas emissions while maintaining calcium oxide availability for carbonation.
Solution Approach 2:
The invention recovers and reuses calcium oxide from recycled resources instead of discarding it or producing it through energy-intensive limestone calcination. This recovery approach reduces greenhouse gas emissions by avoiding the thermal decomposition process that releases CO2.
2Manufacturing precision
If separate carbonation and drying processes are used, then product quality can be maintained, but processing cost increases and manufacturing complexity increases
Solution Approach 1:
The invention merges the carbonation process and drying process into a single integrated process. The reactor design allows simultaneous carbonation reaction and moisture evaporation, eliminating the need for separate drying equipment and operations, thereby reducing processing costs while maintaining product quality.
Solution Approach 2:
The reactor is designed to perform multiple functions simultaneously: carbonation reaction, heating, and drying. This multi-functionality eliminates the need for separate dedicated equipment for each process, simplifying manufacturing and reducing overall processing costs.
3Productivity
If multiple separate reactors are used for hydration and carbonation, then reaction efficiency can be optimized, but device complexity increases and manufacturing cost increases
Solution Approach 1:
The invention combines hydration and carbonation reactions in a single reactor system with multiple chambers. This merging reduces device complexity by eliminating the need for multiple separate reactors while maintaining reaction efficiency through optimized chamber design and material flow management.
Solution Approach 2:
The single reactor is segmented into multiple chambers that handle different stages of the process. This segmentation allows optimized reaction conditions in each chamber while keeping the overall system compact and simpler than multiple separate reactors.
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 effectively reduces greenhouse gas emissions and simplifies the production of calcium carbonate, lowering processing costs by utilizing recycled materials and performing hydration and carbonation in a semi-dry process.
Implementation Method 1
a plurality of agitators disposed correspondingly to the plurality of chambers to agitate substances disposed in the plurality of chambers
Implementation Method 2
allowing the calcium oxide to react with water and carbon dioxide to produce calcium carbonate
Implementation Method 3
reacting the calcium hydroxide with carbon dioxide to produce calcium carbonate
Data Source
AI summary
Provided is a reactor and carbonation equipment having the same, and the reactor includes: a plurality of chambers; a support structure for supporting the plurality of chambers; and a plurality of agitators disposed correspondingly to the plurality of chambers to agitate substances disposed in the plurality of chambers, wherein the plurality of chambers may include first to third chambers coupled sequentially to one another in a thickness direction of the reactor, each chamber including a body having a lower portion having the shape of a semi-cylinder and an opening formed on the body to communicate with the neighboring chamber or the outside, the first chamber having a first water introducing pipe for supplying water to the first body, the second chamber having a second water introducing pipe for supplying water to the second body and a first gas introducing pipe for supplying gas to the second body, and the third chamber having a second gas introducing pipe for supplying gas to the third body.