Catalyst Tower Pressure Buffering via Diameter Expansion
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Solution Overview
Problem
Thermal cracking systems face challenges in achieving desired liquid fuel quality within acceptable production cycles due to upstream pressure buildup and safety issues related to catalyst towers, which also lead to frequent maintenance downtimes.
Innovation Solution
A catalyst tower with a larger diameter and strategically positioned catalyst holding plate to buffer pressure, allowing gas expansion and reducing pressure buildup, while maintaining system economics and operational safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a catalyst tower is added to improve liquid fuel quality, then the liquid fuel quality is improved, but upstream pressure buildup occurs due to reduced gas flow
Solution Approach 1:
The catalyst tower is divided into multiple segments with different catalyst types arranged in series. Each segment handles a portion of the gas flow, distributing the pressure impact and allowing controlled catalytic conversion at each stage, thereby maintaining liquid fuel quality while managing upstream pressure buildup.
Solution Approach 2:
Different catalysts are placed in different sections of the tower based on local requirements. The catalyst selection and arrangement are optimized for specific zones to maximize catalytic activity where needed while minimizing pressure buildup in other areas, achieving localized optimization of both fuel quality and pressure management.
2Manufacturing precision
If gas flow is slowed down to improve catalytic reaction, then liquid fuel quality is improved, but pressure buildup increases in upstream piping
Solution Approach 1:
The system incorporates dynamic flow control mechanisms that adjust gas flow rates through the catalyst tower based on real-time operating conditions. This allows optimization of catalytic reaction time for fuel quality while dynamically managing overall gas flow to prevent excessive pressure buildup in upstream piping.
Solution Approach 2:
Operating parameters such as temperature, pressure, and flow rate are dynamically adjusted to optimize the balance between catalytic conversion efficiency and gas flow rate. By changing these parameters, the system achieves desired liquid fuel quality while maintaining acceptable productivity and preventing pressure buildup.
3Manufacturing precision
If the catalyst tower is made taller to increase catalytic contact time, then liquid fuel quality is improved, but system complexity and maintenance difficulty increase
Solution Approach 1:
The catalyst tower is segmented into multiple sections with different catalyst types and functions. This segmentation allows for optimized catalytic contact time in each section while simplifying maintenance by enabling selective access and replacement of catalyst beds in individual segments without shutting down the entire tower.
Solution Approach 2:
Instead of increasing tower height to extend contact time, the system uses multiple catalyst beds arranged in series, effectively adding a dimensional approach to catalytic processing. This maintains contact time benefits while improving maintainability and reducing overall structural complexity.
4Stress or pressure
If the catalyst tower diameter is increased to reduce pressure buildup, then upstream pressure is reduced, but equipment size and cost increase
Solution Approach 1:
The catalyst tower employs varying diameter sections or internal structures that create localized expansion zones to buffer pressure buildup. This allows pressure management without requiring a uniformly large diameter throughout the entire tower, reducing overall material usage and cost while maintaining effective pressure control.
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 solution effectively reduces upstream pressure buildup, enhances operational safety, and allows for continuous production without complete system shutdowns by enabling modular maintenance of sub-catalyst towers and sub-condensers.
Implementation Method 1
Thermal cracking, also known as pyrolysis, has been deemed as a potential alternative way of disposal by the waste management industry. Processing hydrocarbon wastes with a thermal cracking reaction can be beneficial
Implementation Method 2
A catalyst tower with a larger diameter and strategically positioned catalyst holding plate to buffer pressure, allowing gas expansion and reducing pressure buildup
Implementation Method 3
The reformed oil gas then leaves for the sub-condensers 103A, 103B, and 103C, where it gets condensed into a liquid fuel
Data Source
AI summary
According to one aspect of the invention, a catalyst tower is provided, which comprises a gas inlet and a catalyst holding plate set therein. The gas inlet is the opening where the catalyst tower and the upstream piping connects with one another. The distance between the gas inlet and the catalyst holding plate is directly proportional to the difference in diameter between the catalyst tower and the upstream piping.