Catalyst Cleaning Apparatus Gas Flow Velocity Control
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Solution Overview
Problem
Existing methods for removing exuded and attached substances from catalyst surfaces in fluidized bed reactions are inefficient for industrially used amounts, leading to degraded catalyst fluidity and unstable reactions.
Innovation Solution
An apparatus is designed to efficiently remove catalyst surface substances by adjusting the gas flow length and average flow velocity within specific ranges, using a gas flow with a converted energy value per unit mass that satisfies a particular formula, and incorporating a collection and return system with centrifugal separation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the existing method for removing catalyst surface substances is used, then small amounts of catalyst can be processed, but the method is inefficient for industrially used amounts and leads to degraded catalyst fluidity
Solution Approach 1:
The invention changes the parameters of gas flow by specifying a gas flow length of 55 mm or more and an average flow velocity of 80 m/s or more and 500 m/s or less, which transforms the existing method into one capable of efficiently processing industrially used amounts of catalyst while maintaining catalyst fluidity
Solution Approach 2:
The invention uses a gas flow with controlled velocity and length to remove catalyst surface substances, applying pneumatic principles to achieve efficient cleaning of large amounts of catalyst without degrading fluidity, unlike the existing method
2Productivity
If the gas flow velocity is increased to remove catalyst surface substances efficiently, then productivity improves, but catalyst particles may crack
Solution Approach 1:
The invention optimizes the gas flow velocity parameter by setting it to 80 m/s or more and 500 m/s or less, which provides sufficient energy for effective removal of surface substances while maintaining catalyst particle integrity and preventing cracking
Solution Approach 2:
The invention uses dynamic gas flow with controlled velocity ranges to achieve effective cleaning while adapting to different catalyst amounts and conditions, allowing efficient processing without causing particle damage
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 apparatus effectively removes catalyst surface substances, improving catalyst fluidity and reaction stability, enabling efficient processing of large catalyst amounts while preventing particle cracking.
Implementation Method 1
bringing a gas flow into contact with the catalyst housed inside the main body
Implementation Method 2
the catalyst involved can be extracted and replenished even during operation
Implementation Method 3
a separation device for separating the catalyst and the catalyst surface substance from each other by a centrifugal force
Data Source
AI summary
An apparatus for efficiently removing the exuded substance and/or the attached substance on the surface of a catalyst (catalyst surface substance) from the catalyst is provided. The apparatus comprising a main body, the apparatus for removing a catalyst surface substance present on a surface of a catalyst from the catalyst by bringing a gas flow into contact with the catalyst housed in the main body, wherein a gas flow length in a flow direction of the gas flow is 55 mm or more, and an average flow velocity of the gas flow is 80 m/s or more and 500 m/s or less in terms of a linear velocity at 15° C. and 1 atm.