Multi-pass Vertical Tubular Reactor Segmented Baffles
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Solution Overview
Problem
Designing a Fischer Tropsch reactor that offers flexibility in tube length and geometry to accommodate varying gas volumes and pressures while maintaining efficient heat transfer and minimizing field installation work, especially for small-scale, transportable units.
Innovation Solution
A vertical tubular reactor with multiple reaction zones separated by segmented baffles, allowing for adjustable tube lengths and diameters, and the option to pre-pipe and transport the reactor in a compact configuration, with internal gas transfer mechanisms to optimize gas flow and heat management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the reactor is designed with a long tube length to accommodate high gas volumes, then the processing capacity is improved, but the transportability and ease of installation deteriorate
Solution Approach 1:
The reactor is divided into multiple reaction zones with segmented baffles that separate the tube bundle into distinct sections. Each zone can be independently configured with appropriate tube lengths and diameters, allowing the reactor to achieve high gas processing capacity through multiple zones while maintaining transportability by using manageable tube lengths in each segment.
2Ease of operation
If the tube length is reduced to improve transportability, then the ease of installation is improved, but the processing capacity deteriorates
Solution Approach 1:
Instead of relying solely on increasing tube length in one dimension to improve processing capacity, the invention uses multiple reaction zones arranged vertically with segmented baffles. This multi-dimensional approach allows the reactor to achieve high capacity through increased zone count and optimized gas flow distribution rather than simply extending tube length.
3Adaptability or versatility
If the reactor geometry is made flexible to accommodate varying process conditions, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The segmented baffle design and modular zone structure provide universal adaptability for various process conditions. The same basic reactor configuration can accommodate different tube lengths, diameters, and zone arrangements to suit different gas volumes and pressures, making the design versatile without requiring fundamentally different reactor structures for each application.
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
This design provides flexibility in reactor geometry and operation, enabling efficient heat transfer and reduced field installation time and costs, while accommodating a wide range of process conditions and ensuring effective conversion of synthesis gas to hydrocarbon products.
Implementation Method 1
exothermic chemical reactions require excellent heat transfer to maintain the reaction within a targeted temperature range
Implementation Method 2
exothermic chemical reactions require excellent heat transfer to maintain the reaction within a targeted temperature range
Implementation Method 3
The synthesis gas is then converted to heavy hydrocarbon products using a Fischer Tropsch catalyst
Implementation Method 4
conversion of the synthesis gas to heavy hydrocarbons via the Fischer Tropsch reaction
Data Source
AI summary
A process for conducting an exothermic reaction in a vertical tubular reactor comprising; providing a reactor with two or more reaction zones each containing multiple tubes attached to common tube sheets at top and bottom, each zone separated by segmented baffles in the top head and the bottom head.