Catalyst Reaction Vessel Switching for Multi-Residence-Time Testing
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Solution Overview
Problem
Conventional methods for determining reaction rates in catalyst layers require manual replacement of reaction vessels with different volumes, leading to a heavy work burden and difficulty in maintaining consistent fluidized states.
Innovation Solution
A test device that automates the reaction rate test by using a control unit to switch between multiple reaction vessels with different catalyst layer volumes, adjusting temperature, and controlling sample flow paths to achieve varying residence times without manual vessel replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual replacement of reaction vessels with different volumes is performed to determine reaction rates, then measurement precision of reaction rate is improved, but ease of operation deteriorates due to heavy work burden
Solution Approach 1:
The system performs automatic vessel replacement and parameter adjustment through automated control mechanisms, eliminating the need for manual intervention. The control unit automatically selects appropriate reaction vessels based on desired residence times and configures flow paths, allowing the system to serve itself without operator involvement in repetitive tasks.
Solution Approach 2:
Manual mechanical operations of replacing vessels and adjusting parameters are replaced by an automated control system that uses electronic control signals to operate valves, pumps, and temperature control mechanisms, substituting human mechanical actions with automated mechanical and electronic systems.
2Adaptability or versatility
If multiple reaction vessels with different volumes are used to achieve different residence times, then adaptability of the test system is improved, but device complexity increases
Solution Approach 1:
A single reaction system is designed to perform multiple functions by accommodating different reaction vessels and configuring various flow paths. The system can operate in different modes (single vessel, series connection, parallel connection) and adapt to different experimental requirements through automated control, making one system serve multiple purposes rather than requiring separate dedicated systems for each function.
Solution Approach 2:
The system configuration is made dynamic through automated control that can change flow paths, vessel connections, and operational parameters in real-time based on the desired experiment conditions. The switching valves and control mechanisms allow the system to dynamically reconfigure itself between different operational states without physical reassembly or manual intervention.
3Reliability
If reaction vessels are frequently replaced to maintain consistent fluidized state, then reliability of test conditions is improved, but loss of time increases due to repeated replacement operations
Solution Approach 1:
Multiple reaction vessels are pre-prepared with different catalyst layer volumes and pre-loaded into the system. The automated control system pre-configures the flow paths and selects the appropriate vessels before experiments begin, eliminating the need for frequent manual replacement operations during the testing process and reducing time loss while maintaining consistent fluidized states.
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 device enables precise reaction rate testing across multiple conditions with different residence times, reducing manual labor and ensuring consistent fluidized states, thereby obtaining accurate reaction rate curves.
Implementation Method 1
a temperature adjusting mechanism that adjusts a temperature of the reaction vessels
Implementation Method 2
a catalyst layer formed by filling a predetermined amount of catalyst (2) into each of the plurality of reaction vessels (2a to 2f)
Data Source
AI summary
Provided are a test device and a test method. In the test device, sample feeders feed samples to a catalyst at a preset flow rate, and each of multiple reaction vessels includes a catalyst layer filled with the catalyst. Feed side switching valves connect a feed flow path through which the samples are fed, to a feed destination reaction vessel, and an outflow side switching valve connects a sample flow path intended to collect the samples for analysis, to an outflow source reaction vessel through which the sample flows out of the catalyst layer. A control unit performs a switching control of the feed destination reaction vessel and the outflow source reaction vessel with the feed side switching valves and the outflow side switching valve, such that a reaction rate test is performed under at least three conditions having different residence times in the catalyst layer.