Catalytic Reactor Hexagonal Heat Exchange Elements
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Solution Overview
Problem
Catalytic reactors with radial heat exchange elements suffer from irregular catalyst thickness and limited flexibility in temperature regulation due to constant interference and uneven heat exchange distribution, leading to suboptimal reaction conditions.
Innovation Solution
A catalytic reactor design featuring vertically arranged hexagonal heat exchange elements with a constant or variable radial distance between cylinders, allowing for adjustable interspaces and optimized catalyst bed temperature control through flow rate management and opening configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If heat exchange elements are arranged radially in the catalytic reactor, then heat exchange function is provided, but the catalyst thickness becomes irregular and the gap between heat exchange elements cannot be regulated
Solution Approach 1:
The heat exchange system is divided into multiple independent hexagonal elements that can be individually positioned and spaced. Each hexagonal element is a separate component arranged in a circular pattern, allowing independent control of spacing and heat exchange characteristics throughout the reactor volume.
Solution Approach 2:
The heat exchange elements are arranged vertically in a circular pattern rather than radially, transitioning from a two-dimensional radial arrangement to a three-dimensional vertical circular arrangement. This dimensional change allows for constant radial distance between elements and regulated gap spacing throughout the reactor.
2Temperature
If heat exchange elements are arranged radially, then heat exchange is achieved, but thermal exchange is higher near the center and lower at the external zone
Solution Approach 1:
The hexagonal heat exchange elements are distributed uniformly throughout the reactor volume with constant radial distance between adjacent elements. This local quality approach ensures consistent heat exchange characteristics across all regions of the reactor, eliminating the radial variation in thermal exchange efficiency.
Solution Approach 2:
The hexagonal elements are arranged in a circular pattern with constant radial distance, creating a uniform spatial distribution throughout the reactor. This curved geometric arrangement ensures that heat exchange elements are equidistant from the reactor center, providing uniform thermal exchange distribution.
3Adaptability or versatility
If the gap between heat exchange elements is increased to regulate catalyst thickness, then flexibility in temperature control is improved, but the number of heat exchange elements that can be placed inside the reactor is reduced
Solution Approach 1:
The gap between hexagonal heat exchange elements can be dynamically adjusted to regulate catalyst thickness according to process requirements. The vertical circular arrangement with constant radial distance allows flexible spacing control while maintaining the ability to pack elements efficiently throughout the reactor volume.
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 enhances reaction efficiency by maintaining optimal catalyst bed temperature and catalyst thickness, improving heat exchange uniformity and flexibility, while reducing construction and operational costs.
Implementation Method 1
heat exchange elements (Hex elements) are used for regulating the temperature of a process fluid in the catalytic reactor and/or of a catalyst bed in a catalytic reactor
Implementation Method 2
a cooling or heating fluid flow is meant to keep the catalyst/process temperature at optimal range
Implementation Method 3
an ideal catalytic reactor is a reactor where the reaction takes place in the catalyst bed at optimal operating conditions to reach the maximum conversion rate
Implementation Method 4
said interspace is crossed by a process fluid, whereas a heat exchange fluid is flowing inside the Hex elements
Data Source
Figure 1
Figure 2A~3B
Figure 4
AI summary
The invention concerns a catalytic reactor (10, 10') comprising a cylindrical shell (13), having a process fluid inlet opening (14) and a process fluid outlet opening (15), a heat exchange unit (Hex unit) (11) inside said cylindrical shell (13), said Hex unit (11) comprising a plurality of heat exchange elements (Hex elements) (12, 12'), each Hex element (12, 12') being arranged vertical in a circular pattern and forms a heat exchanging cylinder (Hex cylinder) with a radial distance between each Hex cylinder.