Hydrocarbon Filtration for Catalyst Particle Removal
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Solution Overview
Problem
In Fischer-Tropsch synthesis reaction systems, powdered catalyst particles are generated due to friction and thermal damage, leading to their flow into the upgrading section of liquid fuel products, potentially causing deterioration of both the catalyst and the fuel products.
Innovation Solution
A synthesis reaction system equipped with a reactor, a separator, and a filtering device that traps powdered catalyst particles from the hydrocarbon compound, preventing their mixing with liquid fuel products and allowing for continuous and stable operation by adjusting the number of filtering devices and using a differential pressure gauge for timely cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a bubble column type slurry bed FT reaction system is used to synthesize hydrocarbon compounds, then the synthesis reaction can be carried out efficiently, but powdered catalyst particles are generated due to friction and thermal damage, which flow into the upgrading section and cause deterioration of catalyst and fuel products
Solution Approach 1:
The patent extracts the harmful powdered catalyst particles from the hydrocarbon compound stream using a filtering device positioned between the separator and the upgrading section. The filter removes particles smaller than 1 μm, preventing them from entering the upgrading section and causing deterioration, while allowing the hydrocarbon compound to pass through to the upgrading section for further processing
Solution Approach 2:
The filtering device acts as an intermediary component between the separator and the upgrading section. It intercepts and removes powdered catalyst particles from the slurry stream, serving as a protective barrier that prevents particle contamination of the fuel products while maintaining the flow of hydrocarbon compounds to the upgrading section
2Reliability
If the particle diameter of catalyst particles becomes gradually small due to friction and thermal damage, then the catalyst remains active for synthesis reaction, but the powdered particles flow into the upgrading section along with hydrocarbon compound and cause deterioration
Solution Approach 1:
The filtering device extracts and removes powdered catalyst particles (smaller than 1 μm) from the hydrocarbon compound stream. This allows the catalyst to remain active in the reactor while preventing the harmful powdered particles from entering the upgrading section and causing fuel product deterioration
Solution Approach 2:
The filtering device performs preliminary removal of powdered particles from the slurry stream before the hydrocarbon compound enters the upgrading section. This preliminary action prevents particle contamination from occurring in the first place, rather than addressing contamination after it has occurred
3Reliability
If a filtering device is added to remove powdered catalyst particles, then particle contamination is prevented, but device complexity increases
Solution Approach 1:
The filtering device utilizes a porous filter medium with specific pore size (smaller than 1 μm) to remove powdered catalyst particles. The porous structure allows the filter to effectively capture particles while maintaining reasonable flow characteristics, providing a reliable solution with acceptable structural complexity
Solution Approach 2:
The filtering device is designed as a separate, modular unit positioned between the separator and the upgrading section. This segmentation allows the filtering function to be independently optimized and maintained, reducing the overall system complexity by isolating the particle removal function from the main synthesis and upgrading processes
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
Effectively prevents the mixing of powdered particles into liquid fuel products, maintains catalyst effectiveness, and ensures continuous operation by efficiently removing and managing powdered catalysts through the filtering process.
Implementation Method 1
a filtering device which filters the hydrocarbon compound extracted from the separator to trap powdered catalyst particles
Implementation Method 2
a separator which separates the hydrocarbon compound from the slurry
Data Source
AI summary
A synthesis reaction system is provided with: a reactor which synthesizes a hydrocarbon compound by a chemical reaction of a synthesis gas including hydrogen and carbon monoxide as main components, and a slurry having solid catalyst particles suspended in liquid; a separator which separates the hydrocarbon compound from the slurry; and a filtering device which filters the hydrocarbon compound extracted from the separator to trap powdered catalyst particles.