Catalyst Production Apparatus Washing with Basic Solution
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Solution Overview
Problem
Conventional methods for producing catalysts containing molybdenum, bismuth, and iron result in unstable physical properties and reduced catalyst activity and selectivity due to adherence of solid matter on production apparatus surfaces, affecting reproducibility.
Innovation Solution
A method involving the washing of apparatus surfaces with a basic solution to remove residual materials containing molybdenum, bismuth, and iron, thereby stabilizing the physical properties and maintaining catalyst activity and selectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If catalyst production is repeated without washing the apparatus, then production efficiency is maintained, but physical properties of dried material and catalyst activity deteriorate due to solid matter accumulation
Solution Approach 1:
The apparatus surface is washed with a basic solution before the next catalyst production batch to remove accumulated solid matter. This preliminary cleaning action prevents the deterioration of catalyst properties in subsequent productions, resolving the contradiction between maintaining production efficiency and ensuring catalyst reliability.
2Manufacturing precision
If apparatus is washed frequently to maintain catalyst quality, then catalyst reproducibility improves, but production time and operational complexity increase
Solution Approach 1:
A basic solution is used for washing instead of water or other solutions, as the basic conditions specifically effectively remove the solid matter containing molybdenum, bismuth, and iron. This parameter change (using basic solution) enables effective cleaning with minimal washing time, improving catalyst reproducibility without excessive time loss.
3Quantity of substance
If solid matter adheres to apparatus surface, then residual material remains in system, but this causes change in bulk density and deterioration of catalyst properties
Solution Approach 1:
The basic solution washing process extracts and removes the solid matter containing molybdenum, bismuth, and iron from the apparatus surface. By taking out this residual material, the bulk density stability and catalyst composition consistency are maintained across production batches.
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 method ensures stable physical properties and improved reproducibility of catalysts, reducing the need for frequent apparatus overhauls and enhancing catalyst performance.
Implementation Method 1
washing a surface of at least one device equipped in an apparatus for the production of catalyst, to which a solid matter adheres, with a basic solution
Data Source
AI summary
Disclosed is a method for producing a catalyst, in which physical properties of a dried material or a calcined material in a production process of the catalyst are stable and a change in at least one of a catalyst activity and a selectivity to a target product is small and hence reproducibility of the catalyst is excellent. The present invention is a method for producing a catalyst containing molybdenum, bismuth, and iron, which contains the steps of washing a surface of at least one device equipped in an apparatus for the production of catalyst, to which a solid matter adheres, with a basic solution, and producing the catalyst with the apparatus for the production of catalyst thus washed.